Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6:
  Staging/vt66*: kconfig, depends on WLAN
  Staging: batman-adv: introduce missing kfree
  Staging: batman-adv: Add Kconfig dependancies on PROC_FS and PACKET.
  Staging: panel: Adjust range for PANEL_KEYPAD in Kconfig
  Staging: panel: Fix compilation error with custom lcd charset
  Staging: ramzswap: remove ARM specific d-cache hack
  Staging: rtl8192x: fix printk formats
  Staging: wlan-ng: fix Correct size given to memset
  staging: rtl8192su: add USB VID/PID for HWNUm-300
  staging: fix rtl8192su compilation errors with mac80211
  staging: fix rtl8192e compilation errors with mac80211
  Staging: fix rtl8187se compilation errors with mac80211
  Staging: rtl8192su: fix test for negative error in rtl8192_rx_isr()
  Staging: comedi: jr3_pci: Don't ioremap too much space. Check result.
  Staging: comedi: removed "depricated" from COMEDI_CB_BLOCK
  Staging: comedi: usbdux.c: fix locking up of the driver when the comedi ringbuffer runs empty
  Staging: dst: remove from the tree
  Staging: sm7xx: add a new framebuffer driver
  Staging: batman: fix debug Kconfig option

52 files changed, 3696 insertions, 4672 deletions

diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig
index 093f57af32d3..94eb86319ff3 100644
--- a/drivers/staging/Kconfig
+++ b/drivers/staging/Kconfig
@@ -87,8 +87,6 @@ source "drivers/staging/frontier/Kconfig"
 
 source "drivers/staging/dream/Kconfig"
 
-source "drivers/staging/dst/Kconfig"
-
 source "drivers/staging/pohmelfs/Kconfig"
 
 source "drivers/staging/b3dfg/Kconfig"
@@ -145,5 +143,7 @@ source "drivers/staging/wavelan/Kconfig"
 
 source "drivers/staging/netwave/Kconfig"
 
+source "drivers/staging/sm7xx/Kconfig"
+
 endif # !STAGING_EXCLUDE_BUILD
 endif # STAGING
diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile
index 069864f4391e..b5e67b889f60 100644
--- a/drivers/staging/Makefile
+++ b/drivers/staging/Makefile
@@ -26,7 +26,6 @@ obj-$(CONFIG_RTL8192E)		+= rtl8192e/
 obj-$(CONFIG_INPUT_MIMIO)	+= mimio/
 obj-$(CONFIG_TRANZPORT)		+= frontier/
 obj-$(CONFIG_DREAM)		+= dream/
-obj-$(CONFIG_DST)		+= dst/
 obj-$(CONFIG_POHMELFS)		+= pohmelfs/
 obj-$(CONFIG_B3DFG)		+= b3dfg/
 obj-$(CONFIG_IDE_PHISON)	+= phison/
@@ -53,3 +52,4 @@ obj-$(CONFIG_ARLAN)		+= arlan/
 obj-$(CONFIG_WAVELAN)		+= wavelan/
 obj-$(CONFIG_PCMCIA_WAVELAN)	+= wavelan/
 obj-$(CONFIG_PCMCIA_NETWAVE)	+= netwave/
+obj-$(CONFIG_FB_SM7XX)		+= sm7xx/
diff --git a/drivers/staging/batman-adv/Kconfig b/drivers/staging/batman-adv/Kconfig
index 7632f5760060..1d74dabf9511 100644
--- a/drivers/staging/batman-adv/Kconfig
+++ b/drivers/staging/batman-adv/Kconfig
@@ -4,6 +4,7 @@
 
 config BATMAN_ADV
 	tristate "B.A.T.M.A.N. Advanced Meshing Protocol"
+	depends on PROC_FS && PACKET
         default n
 	---help---
 
diff --git a/drivers/staging/batman-adv/send.c b/drivers/staging/batman-adv/send.c
index d724798278d6..eb617508cca4 100644
--- a/drivers/staging/batman-adv/send.c
+++ b/drivers/staging/batman-adv/send.c
@@ -363,8 +363,10 @@ void add_bcast_packet_to_list(unsigned char *packet_buff, int packet_len)
 		return;
 
 	forw_packet->packet_buff = kmalloc(packet_len, GFP_ATOMIC);
-	if (!forw_packet->packet_buff)
+	if (!forw_packet->packet_buff) {
+		kfree(forw_packet);
 		return;
+	}
 
 	forw_packet->packet_len = packet_len;
 	memcpy(forw_packet->packet_buff, packet_buff, forw_packet->packet_len);
diff --git a/drivers/staging/comedi/comedi.h b/drivers/staging/comedi/comedi.h
index ccc5cdc008c6..b559a9c2f857 100644
--- a/drivers/staging/comedi/comedi.h
+++ b/drivers/staging/comedi/comedi.h
@@ -451,7 +451,7 @@
 
 #define COMEDI_CB_EOS		1	/* end of scan */
 #define COMEDI_CB_EOA		2	/* end of acquisition */
-#define COMEDI_CB_BLOCK		4	/* DEPRECATED: convenient block size */
+#define COMEDI_CB_BLOCK		4	/* data has arrived: wakes up read() / write() */
 #define COMEDI_CB_EOBUF		8	/* DEPRECATED: end of buffer */
 #define COMEDI_CB_ERROR		16	/* card error during acquisition */
 #define COMEDI_CB_OVERFLOW	32	/* buffer overflow/underflow */
diff --git a/drivers/staging/comedi/drivers/jr3_pci.c b/drivers/staging/comedi/drivers/jr3_pci.c
index 0d2c2eb23b23..bd397840dcba 100644
--- a/drivers/staging/comedi/drivers/jr3_pci.c
+++ b/drivers/staging/comedi/drivers/jr3_pci.c
@@ -849,8 +849,11 @@ static int jr3_pci_attach(struct comedi_device *dev,
 	}
 
 	devpriv->pci_enabled = 1;
-	devpriv->iobase =
-	    ioremap(pci_resource_start(card, 0), sizeof(struct jr3_t));
+	devpriv->iobase = ioremap(pci_resource_start(card, 0),
+			offsetof(struct jr3_t, channel[devpriv->n_channels]));
+	if (!devpriv->iobase)
+		return -ENOMEM;
+
 	result = alloc_subdevices(dev, devpriv->n_channels);
 	if (result < 0)
 		goto out;
diff --git a/drivers/staging/comedi/drivers/usbdux.c b/drivers/staging/comedi/drivers/usbdux.c
index 06c020466298..9a1b559c4b0d 100644
--- a/drivers/staging/comedi/drivers/usbdux.c
+++ b/drivers/staging/comedi/drivers/usbdux.c
@@ -1,4 +1,4 @@
-#define DRIVER_VERSION "v2.3"
+#define DRIVER_VERSION "v2.4"
 #define DRIVER_AUTHOR "Bernd Porr, BerndPorr@f2s.com"
 #define DRIVER_DESC "Stirling/ITL USB-DUX -- Bernd.Porr@f2s.com"
 /*
@@ -81,6 +81,8 @@ sampling rate. If you sample two channels you get 4kHz and so on.
  * 2.1:  changed PWM API
  * 2.2:  added firmware kernel request to fix an udev problem
  * 2.3:  corrected a bug in bulk timeouts which were far too short
+ * 2.4:  fixed a bug which causes the driver to hang when it ran out of data.
+ *       Thanks to Jan-Matthias Braun and Ian to spot the bug and fix it.
  *
  */
 
@@ -532,6 +534,7 @@ static void usbduxsub_ai_IsocIrq(struct urb *urb)
 		}
 	}
 	/* tell comedi that data is there */
+	s->async->events |= COMEDI_CB_BLOCK | COMEDI_CB_EOS;
 	comedi_event(this_usbduxsub->comedidev, s);
 }
 
diff --git a/drivers/staging/dst/Kconfig b/drivers/staging/dst/Kconfig
deleted file mode 100644
index 448d342ac2a2..000000000000
--- a/drivers/staging/dst/Kconfig
+++ /dev/null
@@ -1,67 +0,0 @@
-config DST
-	tristate "Distributed storage"
-	depends on NET && CRYPTO && SYSFS && BLK_DEV
-	select CONNECTOR
-	---help---
-	DST is a network block device storage, which can be used to organize
-	exported storage on the remote nodes into the local block device.
-
-	DST works on top of any network media and protocol; it is just a matter
-	of configuration utility to understand the correct addresses. The most
-	common example is TCP over IP, which allows to pass through firewalls and
-	create remote backup storage in a different datacenter. DST requires
-	single port to be enabled on the exporting node and outgoing connections
-	on the local node.
-
-	DST works with in-kernel client and server, which improves performance by
-	eliminating unneded data copies and by not depending on the version
-	of the external IO components. It requires userspace configuration utility
-	though.
-
-	DST uses transaction model, when each store has to be explicitly acked
-	from the remote node to be considered as successfully written. There
-	may be lots of in-flight transactions. When remote host does not ack
-	the transaction it will be resent predefined number of times with specified
-	timeouts between them. All those parameters are configurable. Transactions
-	are marked as failed after all resends complete unsuccessfully; having
-	long enough resend timeout and/or large number of resends allows not to
-	return error to the higher (FS usually) layer in case of short network
-	problems or remote node outages. In case of network RAID setup this means
-	that storage will not degrade until transactions are marked as failed, and
-	thus will not force checksum recalculation and data rebuild. In case of
-	connection failure DST will try to reconnect to the remote node automatically.
-	DST sends ping commands at idle time to detect if remote node is alive.
-
-	Because of transactional model it is possible to use zero-copy sending
-	without worry of data corruption (which in turn could be detected by the
-	strong checksums though).
-
-	DST may fully encrypt the data channel in case of untrusted channel and implement
-	strong checksum of the transferred data. It is possible to configure algorithms
-	and crypto keys; they should match on both sides of the network channel.
-	Crypto processing does not introduce noticeble performance overhead, since DST
-	uses configurable pool of threads to perform crypto processing.
-
-	DST utilizes memory pool model of all its transaction allocations (it is the
-	only additional allocation on the client) and server allocations (bio pools,
-	while pages are allocated from the slab).
-
-	At startup DST performs a simple negotiation with the export node to determine
-	access permissions and size of the exported storage. It can be extended if
-	new parameters should be autonegotiated.
-
-	DST carries block IO flags in the protocol, which allows to transparently implement
-	barriers and sync/flush operations. Those flags are used in the export node where
-	IO against the local storage is performed, which means that sync write will be sync
-	on the remote node too, which in turn improves data integrity and improved resistance
-	to errors and data corruption during power outages or storage damages.
-
-	Homepage: http://www.ioremap.net/projects/dst
-	Userspace configuration utility and the latest releases: http://www.ioremap.net/archive/dst/
-
-config DST_DEBUG
-	bool "DST debug"
-	depends on DST
-	---help---
-	This option will enable HEAVY debugging of the DST.
-	Turn it on ONLY if you have to debug some really obscure problem.
diff --git a/drivers/staging/dst/Makefile b/drivers/staging/dst/Makefile
deleted file mode 100644
index 3a8b0cf9643e..000000000000
--- a/drivers/staging/dst/Makefile
+++ /dev/null
@@ -1,3 +0,0 @@
-obj-$(CONFIG_DST) += nst.o
-
-nst-y := dcore.o state.o export.o thread_pool.o crypto.o trans.o
diff --git a/drivers/staging/dst/crypto.c b/drivers/staging/dst/crypto.c
deleted file mode 100644
index 351295c97a4b..000000000000
--- a/drivers/staging/dst/crypto.c
+++ /dev/null
@@ -1,733 +0,0 @@
-/*
- * 2007+ Copyright (c) Evgeniy Polyakov <zbr@ioremap.net>
- * All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
-
-#include <linux/bio.h>
-#include <linux/crypto.h>
-#include <linux/dst.h>
-#include <linux/kernel.h>
-#include <linux/scatterlist.h>
-#include <linux/slab.h>
-
-/*
- * Tricky bastard, but IV can be more complex with time...
- */
-static inline u64 dst_gen_iv(struct dst_trans *t)
-{
-	return t->gen;
-}
-
-/*
- * Crypto machinery: hash/cipher support for the given crypto controls.
- */
-static struct crypto_hash *dst_init_hash(struct dst_crypto_ctl *ctl, u8 *key)
-{
-	int err;
-	struct crypto_hash *hash;
-
-	hash = crypto_alloc_hash(ctl->hash_algo, 0, CRYPTO_ALG_ASYNC);
-	if (IS_ERR(hash)) {
-		err = PTR_ERR(hash);
-		dprintk("%s: failed to allocate hash '%s', err: %d.\n",
-				__func__, ctl->hash_algo, err);
-		goto err_out_exit;
-	}
-
-	ctl->crypto_attached_size = crypto_hash_digestsize(hash);
-
-	if (!ctl->hash_keysize)
-		return hash;
-
-	err = crypto_hash_setkey(hash, key, ctl->hash_keysize);
-	if (err) {
-		dprintk("%s: failed to set key for hash '%s', err: %d.\n",
-				__func__, ctl->hash_algo, err);
-		goto err_out_free;
-	}
-
-	return hash;
-
-err_out_free:
-	crypto_free_hash(hash);
-err_out_exit:
-	return ERR_PTR(err);
-}
-
-static struct crypto_ablkcipher *dst_init_cipher(struct dst_crypto_ctl *ctl,
-		u8 *key)
-{
-	int err = -EINVAL;
-	struct crypto_ablkcipher *cipher;
-
-	if (!ctl->cipher_keysize)
-		goto err_out_exit;
-
-	cipher = crypto_alloc_ablkcipher(ctl->cipher_algo, 0, 0);
-	if (IS_ERR(cipher)) {
-		err = PTR_ERR(cipher);
-		dprintk("%s: failed to allocate cipher '%s', err: %d.\n",
-				__func__, ctl->cipher_algo, err);
-		goto err_out_exit;
-	}
-
-	crypto_ablkcipher_clear_flags(cipher, ~0);
-
-	err = crypto_ablkcipher_setkey(cipher, key, ctl->cipher_keysize);
-	if (err) {
-		dprintk("%s: failed to set key for cipher '%s', err: %d.\n",
-				__func__, ctl->cipher_algo, err);
-		goto err_out_free;
-	}
-
-	return cipher;
-
-err_out_free:
-	crypto_free_ablkcipher(cipher);
-err_out_exit:
-	return ERR_PTR(err);
-}
-
-/*
- * Crypto engine has a pool of pages to encrypt data into before sending
- * it over the network. This pool is freed/allocated here.
- */
-static void dst_crypto_pages_free(struct dst_crypto_engine *e)
-{
-	unsigned int i;
-
-	for (i = 0; i < e->page_num; ++i)
-		__free_page(e->pages[i]);
-	kfree(e->pages);
-}
-
-static int dst_crypto_pages_alloc(struct dst_crypto_engine *e, int num)
-{
-	int i;
-
-	e->pages = kmalloc(num * sizeof(struct page **), GFP_KERNEL);
-	if (!e->pages)
-		return -ENOMEM;
-
-	for (i = 0; i < num; ++i) {
-		e->pages[i] = alloc_page(GFP_KERNEL);
-		if (!e->pages[i])
-			goto err_out_free_pages;
-	}
-
-	e->page_num = num;
-	return 0;
-
-err_out_free_pages:
-	while (--i >= 0)
-		__free_page(e->pages[i]);
-
-	kfree(e->pages);
-	return -ENOMEM;
-}
-
-/*
- * Initialize crypto engine for given node.
- * Setup cipher/hash, keys, pool of threads and private data.
- */
-static int dst_crypto_engine_init(struct dst_crypto_engine *e,
-		struct dst_node *n)
-{
-	int err;
-	struct dst_crypto_ctl *ctl = &n->crypto;
-
-	err = dst_crypto_pages_alloc(e, n->max_pages);
-	if (err)
-		goto err_out_exit;
-
-	e->size = PAGE_SIZE;
-	e->data = kmalloc(e->size, GFP_KERNEL);
-	if (!e->data) {
-		err = -ENOMEM;
-		goto err_out_free_pages;
-	}
-
-	if (ctl->hash_algo[0]) {
-		e->hash = dst_init_hash(ctl, n->hash_key);
-		if (IS_ERR(e->hash)) {
-			err = PTR_ERR(e->hash);
-			e->hash = NULL;
-			goto err_out_free;
-		}
-	}
-
-	if (ctl->cipher_algo[0]) {
-		e->cipher = dst_init_cipher(ctl, n->cipher_key);
-		if (IS_ERR(e->cipher)) {
-			err = PTR_ERR(e->cipher);
-			e->cipher = NULL;
-			goto err_out_free_hash;
-		}
-	}
-
-	return 0;
-
-err_out_free_hash:
-	crypto_free_hash(e->hash);
-err_out_free:
-	kfree(e->data);
-err_out_free_pages:
-	dst_crypto_pages_free(e);
-err_out_exit:
-	return err;
-}
-
-static void dst_crypto_engine_exit(struct dst_crypto_engine *e)
-{
-	if (e->hash)
-		crypto_free_hash(e->hash);
-	if (e->cipher)
-		crypto_free_ablkcipher(e->cipher);
-	dst_crypto_pages_free(e);
-	kfree(e->data);
-}
-
-/*
- * Waiting for cipher processing to be completed.
- */
-struct dst_crypto_completion {
-	struct completion		complete;
-	int				error;
-};
-
-static void dst_crypto_complete(struct crypto_async_request *req, int err)
-{
-	struct dst_crypto_completion *c = req->data;
-
-	if (err == -EINPROGRESS)
-		return;
-
-	dprintk("%s: req: %p, err: %d.\n", __func__, req, err);
-	c->error = err;
-	complete(&c->complete);
-}
-
-static int dst_crypto_process(struct ablkcipher_request *req,
-		struct scatterlist *sg_dst, struct scatterlist *sg_src,
-		void *iv, int enc, unsigned long timeout)
-{
-	struct dst_crypto_completion c;
-	int err;
-
-	init_completion(&c.complete);
-	c.error = -EINPROGRESS;
-
-	ablkcipher_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
-					dst_crypto_complete, &c);
-
-	ablkcipher_request_set_crypt(req, sg_src, sg_dst, sg_src->length, iv);
-
-	if (enc)
-		err = crypto_ablkcipher_encrypt(req);
-	else
-		err = crypto_ablkcipher_decrypt(req);
-
-	switch (err) {
-	case -EINPROGRESS:
-	case -EBUSY:
-		err = wait_for_completion_interruptible_timeout(&c.complete,
-				timeout);
-		if (!err)
-			err = -ETIMEDOUT;
-		else
-			err = c.error;
-		break;
-	default:
-		break;
-	}
-
-	return err;
-}
-
-/*
- * DST uses generic iteration approach for data crypto processing.
- * Single block IO request is switched into array of scatterlists,
- * which are submitted to the crypto processing iterator.
- *
- * Input and output iterator initialization are different, since
- * in output case we can not encrypt data in-place and need a
- * temporary storage, which is then being sent to the remote peer.
- */
-static int dst_trans_iter_out(struct bio *bio, struct dst_crypto_engine *e,
-		int (*iterator) (struct dst_crypto_engine *e,
-				  struct scatterlist *dst,
-				  struct scatterlist *src))
-{
-	struct bio_vec *bv;
-	int err, i;
-
-	sg_init_table(e->src, bio->bi_vcnt);
-	sg_init_table(e->dst, bio->bi_vcnt);
-
-	bio_for_each_segment(bv, bio, i) {
-		sg_set_page(&e->src[i], bv->bv_page, bv->bv_len, bv->bv_offset);
-		sg_set_page(&e->dst[i], e->pages[i], bv->bv_len, bv->bv_offset);
-
-		err = iterator(e, &e->dst[i], &e->src[i]);
-		if (err)
-			return err;
-	}
-
-	return 0;
-}
-
-static int dst_trans_iter_in(struct bio *bio, struct dst_crypto_engine *e,
-		int (*iterator) (struct dst_crypto_engine *e,
-				  struct scatterlist *dst,
-				  struct scatterlist *src))
-{
-	struct bio_vec *bv;
-	int err, i;
-
-	sg_init_table(e->src, bio->bi_vcnt);
-	sg_init_table(e->dst, bio->bi_vcnt);
-
-	bio_for_each_segment(bv, bio, i) {
-		sg_set_page(&e->src[i], bv->bv_page, bv->bv_len, bv->bv_offset);
-		sg_set_page(&e->dst[i], bv->bv_page, bv->bv_len, bv->bv_offset);
-
-		err = iterator(e, &e->dst[i], &e->src[i]);
-		if (err)
-			return err;
-	}
-
-	return 0;
-}
-
-static int dst_crypt_iterator(struct dst_crypto_engine *e,
-		struct scatterlist *sg_dst, struct scatterlist *sg_src)
-{
-	struct ablkcipher_request *req = e->data;
-	u8 iv[32];
-
-	memset(iv, 0, sizeof(iv));
-
-	memcpy(iv, &e->iv, sizeof(e->iv));
-
-	return dst_crypto_process(req, sg_dst, sg_src, iv, e->enc, e->timeout);
-}
-
-static int dst_crypt(struct dst_crypto_engine *e, struct bio *bio)
-{
-	struct ablkcipher_request *req = e->data;
-
-	memset(req, 0, sizeof(struct ablkcipher_request));
-	ablkcipher_request_set_tfm(req, e->cipher);
-
-	if (e->enc)
-		return dst_trans_iter_out(bio, e, dst_crypt_iterator);
-	else
-		return dst_trans_iter_in(bio, e, dst_crypt_iterator);
-}
-
-static int dst_hash_iterator(struct dst_crypto_engine *e,
-		struct scatterlist *sg_dst, struct scatterlist *sg_src)
-{
-	return crypto_hash_update(e->data, sg_src, sg_src->length);
-}
-
-static int dst_hash(struct dst_crypto_engine *e, struct bio *bio, void *dst)
-{
-	struct hash_desc *desc = e->data;
-	int err;
-
-	desc->tfm = e->hash;
-	desc->flags = 0;
-
-	err = crypto_hash_init(desc);
-	if (err)
-		return err;
-
-	err = dst_trans_iter_in(bio, e, dst_hash_iterator);
-	if (err)
-		return err;
-
-	err = crypto_hash_final(desc, dst);
-	if (err)
-		return err;
-
-	return 0;
-}
-
-/*
- * Initialize/cleanup a crypto thread. The only thing it should
- * do is to allocate a pool of pages as temporary storage.
- * And to setup cipher and/or hash.
- */
-static void *dst_crypto_thread_init(void *data)
-{
-	struct dst_node *n = data;
-	struct dst_crypto_engine *e;
-	int err = -ENOMEM;
-
-	e = kzalloc(sizeof(struct dst_crypto_engine), GFP_KERNEL);
-	if (!e)
-		goto err_out_exit;
-	e->src = kcalloc(2 * n->max_pages, sizeof(struct scatterlist),
-			GFP_KERNEL);
-	if (!e->src)
-		goto err_out_free;
-
-	e->dst = e->src + n->max_pages;
-
-	err = dst_crypto_engine_init(e, n);
-	if (err)
-		goto err_out_free_all;
-
-	return e;
-
-err_out_free_all:
-	kfree(e->src);
-err_out_free:
-	kfree(e);
-err_out_exit:
-	return ERR_PTR(err);
-}
-
-static void dst_crypto_thread_cleanup(void *private)
-{
-	struct dst_crypto_engine *e = private;
-
-	dst_crypto_engine_exit(e);
-	kfree(e->src);
-	kfree(e);
-}
-
-/*
- * Initialize crypto engine for given node: store keys, create pool
- * of threads, initialize each one.
- *
- * Each thread has unique ID, but 0 and 1 are reserved for receiving and
- * accepting threads (if export node), so IDs could start from 2, but starting
- * them from 10 allows easily understand what this thread is for.
- */
-int dst_node_crypto_init(struct dst_node *n, struct dst_crypto_ctl *ctl)
-{
-	void *key = (ctl + 1);
-	int err = -ENOMEM, i;
-	char name[32];
-
-	if (ctl->hash_keysize) {
-		n->hash_key = kmalloc(ctl->hash_keysize, GFP_KERNEL);
-		if (!n->hash_key)
-			goto err_out_exit;
-		memcpy(n->hash_key, key, ctl->hash_keysize);
-	}
-
-	if (ctl->cipher_keysize) {
-		n->cipher_key = kmalloc(ctl->cipher_keysize, GFP_KERNEL);
-		if (!n->cipher_key)
-			goto err_out_free_hash;
-		memcpy(n->cipher_key, key, ctl->cipher_keysize);
-	}
-	memcpy(&n->crypto, ctl, sizeof(struct dst_crypto_ctl));
-
-	for (i = 0; i < ctl->thread_num; ++i) {
-		snprintf(name, sizeof(name), "%s-crypto-%d", n->name, i);
-		/* Unique ids... */
-		err = thread_pool_add_worker(n->pool, name, i + 10,
-			dst_crypto_thread_init, dst_crypto_thread_cleanup, n);
-		if (err)
-			goto err_out_free_threads;
-	}
-
-	return 0;
-
-err_out_free_threads:
-	while (--i >= 0)
-		thread_pool_del_worker_id(n->pool, i+10);
-
-	if (ctl->cipher_keysize)
-		kfree(n->cipher_key);
-	ctl->cipher_keysize = 0;
-err_out_free_hash:
-	if (ctl->hash_keysize)
-		kfree(n->hash_key);
-	ctl->hash_keysize = 0;
-err_out_exit:
-	return err;
-}
-
-void dst_node_crypto_exit(struct dst_node *n)
-{
-	struct dst_crypto_ctl *ctl = &n->crypto;
-
-	if (ctl->cipher_algo[0] || ctl->hash_algo[0]) {
-		kfree(n->hash_key);
-		kfree(n->cipher_key);
-	}
-}
-
-/*
- * Thrad pool setup callback. Just stores a transaction in private data.
- */
-static int dst_trans_crypto_setup(void *crypto_engine, void *trans)
-{
-	struct dst_crypto_engine *e = crypto_engine;
-
-	e->private = trans;
-	return 0;
-}
-
-#if 0
-static void dst_dump_bio(struct bio *bio)
-{
-	u8 *p;
-	struct bio_vec *bv;
-	int i;
-
-	bio_for_each_segment(bv, bio, i) {
-		dprintk("%s: %llu/%u: size: %u, offset: %u, data: ",
-				__func__, bio->bi_sector, bio->bi_size,
-				bv->bv_len, bv->bv_offset);
-
-		p = kmap(bv->bv_page) + bv->bv_offset;
-		for (i = 0; i < bv->bv_len; ++i)
-			printk(KERN_DEBUG "%02x ", p[i]);
-		kunmap(bv->bv_page);
-		printk("\n");
-	}
-}
-#endif
-
-/*
- * Encrypt/hash data and send it to the network.
- */
-static int dst_crypto_process_sending(struct dst_crypto_engine *e,
-		struct bio *bio, u8 *hash)
-{
-	int err;
-
-	if (e->cipher) {
-		err = dst_crypt(e, bio);
-		if (err)
-			goto err_out_exit;
-	}
-
-	if (e->hash) {
-		err = dst_hash(e, bio, hash);
-		if (err)
-			goto err_out_exit;
-
-#ifdef CONFIG_DST_DEBUG
-		{
-			unsigned int i;
-
-			/* dst_dump_bio(bio); */
-
-			printk(KERN_DEBUG "%s: bio: %llu/%u, rw: %lu, hash: ",
-				__func__, (u64)bio->bi_sector,
-				bio->bi_size, bio_data_dir(bio));
-			for (i = 0; i < crypto_hash_digestsize(e->hash); ++i)
-					printk("%02x ", hash[i]);
-			printk("\n");
-		}
-#endif
-	}
-
-	return 0;
-
-err_out_exit:
-	return err;
-}
-
-/*
- * Check if received data is valid. Decipher if it is.
- */
-static int dst_crypto_process_receiving(struct dst_crypto_engine *e,
-		struct bio *bio, u8 *hash, u8 *recv_hash)
-{
-	int err;
-
-	if (e->hash) {
-		int mismatch;
-
-		err = dst_hash(e, bio, hash);
-		if (err)
-			goto err_out_exit;
-
-		mismatch = !!memcmp(recv_hash, hash,
-				crypto_hash_digestsize(e->hash));
-#ifdef CONFIG_DST_DEBUG
-		/* dst_dump_bio(bio); */
-
-		printk(KERN_DEBUG "%s: bio: %llu/%u, rw: %lu, hash mismatch: %d",
-			__func__, (u64)bio->bi_sector, bio->bi_size,
-			bio_data_dir(bio), mismatch);
-		if (mismatch) {
-			unsigned int i;
-
-			printk(", recv/calc: ");
-			for (i = 0; i < crypto_hash_digestsize(e->hash); ++i)
-				printk("%02x/%02x ", recv_hash[i], hash[i]);
-
-		}
-		printk("\n");
-#endif
-		err = -1;
-		if (mismatch)
-			goto err_out_exit;
-	}
-
-	if (e->cipher) {
-		err = dst_crypt(e, bio);
-		if (err)
-			goto err_out_exit;
-	}
-
-	return 0;
-
-err_out_exit:
-	return err;
-}
-
-/*
- * Thread pool callback to encrypt data and send it to the netowork.
- */
-static int dst_trans_crypto_action(void *crypto_engine, void *schedule_data)
-{
-	struct dst_crypto_engine *e = crypto_engine;
-	struct dst_trans *t = schedule_data;
-	struct bio *bio = t->bio;
-	int err;
-
-	dprintk("%s: t: %p, gen: %llu, cipher: %p, hash: %p.\n",
-			__func__, t, t->gen, e->cipher, e->hash);
-
-	e->enc = t->enc;
-	e->iv = dst_gen_iv(t);
-
-	if (bio_data_dir(bio) == WRITE) {
-		err = dst_crypto_process_sending(e, bio, t->cmd.hash);
-		if (err)
-			goto err_out_exit;
-
-		if (e->hash) {
-			t->cmd.csize = crypto_hash_digestsize(e->hash);
-			t->cmd.size += t->cmd.csize;
-		}
-
-		return dst_trans_send(t);
-	} else {
-		u8 *hash = e->data + e->size/2;
-
-		err = dst_crypto_process_receiving(e, bio, hash, t->cmd.hash);
-		if (err)
-			goto err_out_exit;
-
-		dst_trans_remove(t);
-		dst_trans_put(t);
-	}
-
-	return 0;
-
-err_out_exit:
-	t->error = err;
-	dst_trans_put(t);
-	return err;
-}
-
-/*
- * Schedule crypto processing for given transaction.
- */
-int dst_trans_crypto(struct dst_trans *t)
-{
-	struct dst_node *n = t->n;
-	int err;
-
-	err = thread_pool_schedule(n->pool,
-		dst_trans_crypto_setup, dst_trans_crypto_action,
-		t, MAX_SCHEDULE_TIMEOUT);
-	if (err)
-		goto err_out_exit;
-
-	return 0;
-
-err_out_exit:
-	dst_trans_put(t);
-	return err;
-}
-
-/*
- * Crypto machinery for the export node.
- */
-static int dst_export_crypto_setup(void *crypto_engine, void *bio)
-{
-	struct dst_crypto_engine *e = crypto_engine;
-
-	e->private = bio;
-	return 0;
-}
-
-static int dst_export_crypto_action(void *crypto_engine, void *schedule_data)
-{
-	struct dst_crypto_engine *e = crypto_engine;
-	struct bio *bio = schedule_data;
-	struct dst_export_priv *p = bio->bi_private;
-	int err;
-
-	dprintk("%s: e: %p, data: %p, bio: %llu/%u, dir: %lu.\n",
-			__func__, e, e->data, (u64)bio->bi_sector,
-			bio->bi_size, bio_data_dir(bio));
-
-	e->enc = (bio_data_dir(bio) == READ);
-	e->iv = p->cmd.id;
-
-	if (bio_data_dir(bio) == WRITE) {
-		u8 *hash = e->data + e->size/2;
-
-		err = dst_crypto_process_receiving(e, bio, hash, p->cmd.hash);
-		if (err)
-			goto err_out_exit;
-
-		generic_make_request(bio);
-	} else {
-		err = dst_crypto_process_sending(e, bio, p->cmd.hash);
-		if (err)
-			goto err_out_exit;
-
-		if (e->hash) {
-			p->cmd.csize = crypto_hash_digestsize(e->hash);
-			p->cmd.size += p->cmd.csize;
-		}
-
-		err = dst_export_send_bio(bio);
-	}
-	return 0;
-
-err_out_exit:
-	bio_put(bio);
-	return err;
-}
-
-int dst_export_crypto(struct dst_node *n, struct bio *bio)
-{
-	int err;
-
-	err = thread_pool_schedule(n->pool,
-		dst_export_crypto_setup, dst_export_crypto_action,
-		bio, MAX_SCHEDULE_TIMEOUT);
-	if (err)
-		goto err_out_exit;
-
-	return 0;
-
-err_out_exit:
-	bio_put(bio);
-	return err;
-}
diff --git a/drivers/staging/dst/dcore.c b/drivers/staging/dst/dcore.c
deleted file mode 100644
index c83ca7e3d048..000000000000
--- a/drivers/staging/dst/dcore.c
+++ /dev/null
@@ -1,968 +0,0 @@
-/*
- * 2007+ Copyright (c) Evgeniy Polyakov <zbr@ioremap.net>
- * All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/blkdev.h>
-#include <linux/bio.h>
-#include <linux/buffer_head.h>
-#include <linux/connector.h>
-#include <linux/dst.h>
-#include <linux/device.h>
-#include <linux/jhash.h>
-#include <linux/idr.h>
-#include <linux/init.h>
-#include <linux/namei.h>
-#include <linux/slab.h>
-#include <linux/socket.h>
-
-#include <linux/in.h>
-#include <linux/in6.h>
-
-#include <net/sock.h>
-
-static int dst_major;
-
-static DEFINE_MUTEX(dst_hash_lock);
-static struct list_head *dst_hashtable;
-static unsigned int dst_hashtable_size = 128;
-module_param(dst_hashtable_size, uint, 0644);
-
-static char dst_name[] = "Dementianting goldfish";
-
-static DEFINE_IDR(dst_index_idr);
-static struct cb_id cn_dst_id = { CN_DST_IDX, CN_DST_VAL };
-
-/*
- * DST sysfs tree for device called 'storage':
- *
- * /sys/bus/dst/devices/storage/
- * /sys/bus/dst/devices/storage/type : 192.168.4.80:1025
- * /sys/bus/dst/devices/storage/size : 800
- * /sys/bus/dst/devices/storage/name : storage
- */
-
-static int dst_dev_match(struct device *dev, struct device_driver *drv)
-{
-	return 1;
-}
-
-static struct bus_type dst_dev_bus_type = {
-	.name 		= "dst",
-	.match 		= &dst_dev_match,
-};
-
-static void dst_node_release(struct device *dev)
-{
-	struct dst_info *info = container_of(dev, struct dst_info, device);
-
-	kfree(info);
-}
-
-static struct device dst_node_dev = {
-	.bus 		= &dst_dev_bus_type,
-	.release 	= &dst_node_release
-};
-
-/*
- * Setting size of the node after it was changed.
- */
-static void dst_node_set_size(struct dst_node *n)
-{
-	struct block_device *bdev;
-
-	set_capacity(n->disk, n->size >> 9);
-
-	bdev = bdget_disk(n->disk, 0);
-	if (bdev) {
-		mutex_lock(&bdev->bd_inode->i_mutex);
-		i_size_write(bdev->bd_inode, n->size);
-		mutex_unlock(&bdev->bd_inode->i_mutex);
-		bdput(bdev);
-	}
-}
-
-/*
- * Distributed storage request processing function.
- */
-static int dst_request(struct request_queue *q, struct bio *bio)
-{
-	struct dst_node *n = q->queuedata;
-	int err = -EIO;
-
-	if (bio_empty_barrier(bio) && !blk_queue_discard(q)) {
-		/*
-		 * This is a dirty^Wnice hack, but if we complete this
-		 * operation with -EOPNOTSUPP like intended, XFS
-		 * will stuck and freeze the machine. This may be
-		 * not particulary XFS problem though, but it is the
-		 * only FS which sends empty barrier at umount time
-		 * I worked with.
-		 *
-		 * Empty barriers are not allowed anyway, see 51fd77bd9f512
-		 * for example, although later it was changed to
-		 * bio_rw_flagged(bio, BIO_RW_DISCARD) only, which does not
-		 * work in this case.
-		 */
-		/* err = -EOPNOTSUPP; */
-		err = 0;
-		goto end_io;
-	}
-
-	bio_get(bio);
-
-	return dst_process_bio(n, bio);
-
-end_io:
-	bio_endio(bio, err);
-	return err;
-}
-
-/*
- * Open/close callbacks for appropriate block device.
- */
-static int dst_bdev_open(struct block_device *bdev, fmode_t mode)
-{
-	struct dst_node *n = bdev->bd_disk->private_data;
-
-	dst_node_get(n);
-	return 0;
-}
-
-static int dst_bdev_release(struct gendisk *disk, fmode_t mode)
-{
-	struct dst_node *n = disk->private_data;
-
-	dst_node_put(n);
-	return 0;
-}
-
-static struct block_device_operations dst_blk_ops = {
-	.open		= dst_bdev_open,
-	.release	= dst_bdev_release,
-	.owner		= THIS_MODULE,
-};
-
-/*
- * Block layer binding - disk is created when array is fully configured
- * by userspace request.
- */
-static int dst_node_create_disk(struct dst_node *n)
-{
-	int err = -ENOMEM;
-	u32 index = 0;
-
-	n->queue = blk_init_queue(NULL, NULL);
-	if (!n->queue)
-		goto err_out_exit;
-
-	n->queue->queuedata = n;
-	blk_queue_make_request(n->queue, dst_request);
-	blk_queue_max_phys_segments(n->queue, n->max_pages);
-	blk_queue_max_hw_segments(n->queue, n->max_pages);
-
-	err = -ENOMEM;
-	n->disk = alloc_disk(1);
-	if (!n->disk)
-		goto err_out_free_queue;
-
-	if (!(n->state->permissions & DST_PERM_WRITE)) {
-		printk(KERN_INFO "DST node %s attached read-only.\n", n->name);
-		set_disk_ro(n->disk, 1);
-	}
-
-	if (!idr_pre_get(&dst_index_idr, GFP_KERNEL))
-		goto err_out_put;
-
-	mutex_lock(&dst_hash_lock);
-	err = idr_get_new(&dst_index_idr, NULL, &index);
-	mutex_unlock(&dst_hash_lock);
-	if (err)
-		goto err_out_put;
-
-	n->disk->major = dst_major;
-	n->disk->first_minor = index;
-	n->disk->fops = &dst_blk_ops;
-	n->disk->queue = n->queue;
-	n->disk->private_data = n;
-	snprintf(n->disk->disk_name, sizeof(n->disk->disk_name),
-			"dst-%s", n->name);
-
-	return 0;
-
-err_out_put:
-	put_disk(n->disk);
-err_out_free_queue:
-	blk_cleanup_queue(n->queue);
-err_out_exit:
-	return err;
-}
-
-/*
- * Sysfs machinery: show device's size.
- */
-static ssize_t dst_show_size(struct device *dev,
-		struct device_attribute *attr, char *buf)
-{
-	struct dst_info *info = container_of(dev, struct dst_info, device);
-
-	return sprintf(buf, "%llu\n", info->size);
-}
-
-/*
- * Show local exported device.
- */
-static ssize_t dst_show_local(struct device *dev,
-		struct device_attribute *attr, char *buf)
-{
-	struct dst_info *info = container_of(dev, struct dst_info, device);
-
-	return sprintf(buf, "%s\n", info->local);
-}
-
-/*
- * Shows type of the remote node - device major/minor number
- * for local nodes and address (af_inet ipv4/ipv6 only) for remote nodes.
- */
-static ssize_t dst_show_type(struct device *dev,
-		struct device_attribute *attr, char *buf)
-{
-	struct dst_info *info = container_of(dev, struct dst_info, device);
-	int family = info->net.addr.sa_family;
-
-	if (family == AF_INET) {
-		struct sockaddr_in *sin = (struct sockaddr_in *)&info->net.addr;
-		return sprintf(buf, "%u.%u.%u.%u:%d\n",
-			NIPQUAD(sin->sin_addr.s_addr), ntohs(sin->sin_port));
-	} else if (family == AF_INET6) {
-		struct sockaddr_in6 *sin = (struct sockaddr_in6 *)
-				&info->net.addr;
-		return sprintf(buf,
-			"%pi6:%d\n",
-			&sin->sin6_addr, ntohs(sin->sin6_port));
-	} else {
-		int i, sz = PAGE_SIZE - 2; /* 0 symbol and '\n' below */
-		int size, addrlen = info->net.addr.sa_data_len;
-		unsigned char *a = (unsigned char *)&info->net.addr.sa_data;
-		char *buf_orig = buf;
-
-		size = snprintf(buf, sz, "family: %d, addrlen: %u, addr: ",
-				family, addrlen);
-		sz -= size;
-		buf += size;
-
-		for (i = 0; i < addrlen; ++i) {
-			if (sz < 3)
-				break;
-
-			size = snprintf(buf, sz, "%02x ", a[i]);
-			sz -= size;
-			buf += size;
-		}
-		buf += sprintf(buf, "\n");
-
-		return buf - buf_orig;
-	}
-	return 0;
-}
-
-static struct device_attribute dst_node_attrs[] = {
-	__ATTR(size, 0444, dst_show_size, NULL),
-	__ATTR(type, 0444, dst_show_type, NULL),
-	__ATTR(local, 0444, dst_show_local, NULL),
-};
-
-static int dst_create_node_attributes(struct dst_node *n)
-{
-	int err, i;
-
-	for (i = 0; i < ARRAY_SIZE(dst_node_attrs); ++i) {
-		err = device_create_file(&n->info->device,
-				&dst_node_attrs[i]);
-		if (err)
-			goto err_out_remove_all;
-	}
-	return 0;
-
-err_out_remove_all:
-	while (--i >= 0)
-		device_remove_file(&n->info->device,
-				&dst_node_attrs[i]);
-
-	return err;
-}
-
-static void dst_remove_node_attributes(struct dst_node *n)
-{
-	int i;
-
-	for (i = 0; i < ARRAY_SIZE(dst_node_attrs); ++i)
-		device_remove_file(&n->info->device,
-				&dst_node_attrs[i]);
-}
-
-/*
- * Sysfs cleanup and initialization.
- * Shows number of useful parameters.
- */
-static void dst_node_sysfs_exit(struct dst_node *n)
-{
-	if (n->info) {
-		dst_remove_node_attributes(n);
-		device_unregister(&n->info->device);
-		n->info = NULL;
-	}
-}
-
-static int dst_node_sysfs_init(struct dst_node *n)
-{
-	int err;
-
-	n->info = kzalloc(sizeof(struct dst_info), GFP_KERNEL);
-	if (!n->info)
-		return -ENOMEM;
-
-	memcpy(&n->info->device, &dst_node_dev, sizeof(struct device));
-	n->info->size = n->size;
-
-	dev_set_name(&n->info->device, "dst-%s", n->name);
-	err = device_register(&n->info->device);
-	if (err) {
-		dprintk(KERN_ERR "Failed to register node '%s', err: %d.\n",
-				n->name, err);
-		goto err_out_exit;
-	}
-
-	dst_create_node_attributes(n);
-
-	return 0;
-
-err_out_exit:
-	kfree(n->info);
-	n->info = NULL;
-	return err;
-}
-
-/*
- * DST node hash tables machinery.
- */
-static inline unsigned int dst_hash(char *str, unsigned int size)
-{
-	return jhash(str, size, 0) % dst_hashtable_size;
-}
-
-static void dst_node_remove(struct dst_node *n)
-{
-	mutex_lock(&dst_hash_lock);
-	list_del_init(&n->node_entry);
-	mutex_unlock(&dst_hash_lock);
-}
-
-static void dst_node_add(struct dst_node *n)
-{
-	unsigned hash = dst_hash(n->name, sizeof(n->name));
-
-	mutex_lock(&dst_hash_lock);
-	list_add_tail(&n->node_entry, &dst_hashtable[hash]);
-	mutex_unlock(&dst_hash_lock);
-}
-
-/*
- * Cleaning node when it is about to be freed.
- * There are still users of the socket though,
- * so connection cleanup should be protected.
- */
-static void dst_node_cleanup(struct dst_node *n)
-{
-	struct dst_state *st = n->state;
-
-	if (!st)
-		return;
-
-	if (n->queue) {
-		blk_cleanup_queue(n->queue);
-
-		mutex_lock(&dst_hash_lock);
-		idr_remove(&dst_index_idr, n->disk->first_minor);
-		mutex_unlock(&dst_hash_lock);
-
-		put_disk(n->disk);
-	}
-
-	if (n->bdev) {
-		sync_blockdev(n->bdev);
-		close_bdev_exclusive(n->bdev, FMODE_READ|FMODE_WRITE);
-	}
-
-	dst_state_lock(st);
-	st->need_exit = 1;
-	dst_state_exit_connected(st);
-	dst_state_unlock(st);
-
-	wake_up(&st->thread_wait);
-
-	dst_state_put(st);
-	n->state = NULL;
-}
-
-/*
- * Free security attributes attached to given node.
- */
-static void dst_security_exit(struct dst_node *n)
-{
-	struct dst_secure *s, *tmp;
-
-	list_for_each_entry_safe(s, tmp, &n->security_list, sec_entry) {
-		list_del(&s->sec_entry);
-		kfree(s);
-	}
-}
-
-/*
- * Free node when there are no more users.
- * Actually node has to be freed on behalf od userspace process,
- * since there are number of threads, which are embedded in the
- * node, so they can not exit and free node from there, that is
- * why there is a wakeup if reference counter is not equal to zero.
- */
-void dst_node_put(struct dst_node *n)
-{
-	if (unlikely(!n))
-		return;
-
-	dprintk("%s: n: %p, refcnt: %d.\n",
-			__func__, n, atomic_read(&n->refcnt));
-
-	if (atomic_dec_and_test(&n->refcnt)) {
-		dst_node_remove(n);
-		n->trans_scan_timeout = 0;
-		dst_node_cleanup(n);
-		thread_pool_destroy(n->pool);
-		dst_node_sysfs_exit(n);
-		dst_node_crypto_exit(n);
-		dst_security_exit(n);
-		dst_node_trans_exit(n);
-
-		kfree(n);
-
-		dprintk("%s: freed n: %p.\n", __func__, n);
-	} else {
-		wake_up(&n->wait);
-	}
-}
-
-/*
- * Setting up export device: lookup by the name, get its size
- * and setup listening socket, which will accept clients, which
- * will submit IO for given storage.
- */
-static int dst_setup_export(struct dst_node *n, struct dst_ctl *ctl,
-		struct dst_export_ctl *le)
-{
-	int err;
-
-	snprintf(n->info->local, sizeof(n->info->local), "%s", le->device);
-
-	n->bdev = open_bdev_exclusive(le->device, FMODE_READ|FMODE_WRITE, NULL);
-	if (IS_ERR(n->bdev))
-		return PTR_ERR(n->bdev);
-
-	if (n->size != 0)
-		n->size = min_t(loff_t, n->bdev->bd_inode->i_size, n->size);
-	else
-		n->size = n->bdev->bd_inode->i_size;
-
-	n->info->size = n->size;
-	err = dst_node_init_listened(n, le);
-	if (err)
-		goto err_out_cleanup;
-
-	return 0;
-
-err_out_cleanup:
-	close_bdev_exclusive(n->bdev, FMODE_READ|FMODE_WRITE);
-	n->bdev = NULL;
-
-	return err;
-}
-
-/* Empty thread pool callbacks for the network processing threads. */
-static inline void *dst_thread_network_init(void *data)
-{
-	dprintk("%s: data: %p.\n", __func__, data);
-	return data;
-}
-
-static inline void dst_thread_network_cleanup(void *data)
-{
-	dprintk("%s: data: %p.\n", __func__, data);
-}
-
-/*
- * Allocate DST node and initialize some of its parameters.
- */
-static struct dst_node *dst_alloc_node(struct dst_ctl *ctl,
-		int (*start)(struct dst_node *),
-		int num)
-{
-	struct dst_node *n;
-	int err;
-
-	n = kzalloc(sizeof(struct dst_node), GFP_KERNEL);
-	if (!n)
-		return NULL;
-
-	INIT_LIST_HEAD(&n->node_entry);
-
-	INIT_LIST_HEAD(&n->security_list);
-	mutex_init(&n->security_lock);
-
-	init_waitqueue_head(&n->wait);
-
-	n->trans_scan_timeout = msecs_to_jiffies(ctl->trans_scan_timeout);
-	if (!n->trans_scan_timeout)
-		n->trans_scan_timeout = HZ;
-
-	n->trans_max_retries = ctl->trans_max_retries;
-	if (!n->trans_max_retries)
-		n->trans_max_retries = 10;
-
-	/*
-	 * Pretty much arbitrary default numbers.
-	 * 32 matches maximum number of pages in bio originated from ext3 (31).
-	 */
-	n->max_pages = ctl->max_pages;
-	if (!n->max_pages)
-		n->max_pages = 32;
-
-	if (n->max_pages > 1024)
-		n->max_pages = 1024;
-
-	n->start = start;
-	n->size = ctl->size;
-
-	atomic_set(&n->refcnt, 1);
-	atomic_long_set(&n->gen, 0);
-	snprintf(n->name, sizeof(n->name), "%s", ctl->name);
-
-	err = dst_node_sysfs_init(n);
-	if (err)
-		goto err_out_free;
-
-	n->pool = thread_pool_create(num, n->name, dst_thread_network_init,
-			dst_thread_network_cleanup, n);
-	if (IS_ERR(n->pool)) {
-		err = PTR_ERR(n->pool);
-		goto err_out_sysfs_exit;
-	}
-
-	dprintk("%s: n: %p, name: %s.\n", __func__, n, n->name);
-
-	return n;
-
-err_out_sysfs_exit:
-	dst_node_sysfs_exit(n);
-err_out_free:
-	kfree(n);
-	return NULL;
-}
-
-/*
- * Starting a node, connected to the remote server:
- * register block device and initialize transaction mechanism.
- * In revers order though.
- *
- * It will autonegotiate some parameters with the remote node
- * and update local if needed.
- *
- * Transaction initialization should be the last thing before
- * starting the node, since transaction should include not only
- * block IO, but also crypto related data (if any), which are
- * initialized separately.
- */
-static int dst_start_remote(struct dst_node *n)
-{
-	int err;
-
-	err = dst_node_trans_init(n, sizeof(struct dst_trans));
-	if (err)
-		return err;
-
-	err = dst_node_create_disk(n);
-	if (err)
-		return err;
-
-	dst_node_set_size(n);
-	add_disk(n->disk);
-
-	dprintk("DST: started remote node '%s', minor: %d.\n",
-			n->name, n->disk->first_minor);
-
-	return 0;
-}
-
-/*
- * Adding remote node and initialize connection.
- */
-static int dst_add_remote(struct dst_node *n, struct dst_ctl *ctl,
-		void *data, unsigned int size)
-{
-	int err;
-	struct dst_network_ctl *rctl = data;
-
-	if (n)
-		return -EEXIST;
-
-	if (size != sizeof(struct dst_network_ctl))
-		return -EINVAL;
-
-	n = dst_alloc_node(ctl, dst_start_remote, 1);
-	if (!n)
-		return -ENOMEM;
-
-	memcpy(&n->info->net, rctl, sizeof(struct dst_network_ctl));
-	err = dst_node_init_connected(n, rctl);
-	if (err)
-		goto err_out_free;
-
-	dst_node_add(n);
-
-	return 0;
-
-err_out_free:
-	dst_node_put(n);
-	return err;
-}
-
-/*
- * Adding export node: initializing block device and listening socket.
- */
-static int dst_add_export(struct dst_node *n, struct dst_ctl *ctl,
-		void *data, unsigned int size)
-{
-	int err;
-	struct dst_export_ctl *le = data;
-
-	if (n)
-		return -EEXIST;
-
-	if (size != sizeof(struct dst_export_ctl))
-		return -EINVAL;
-
-	n = dst_alloc_node(ctl, dst_start_export, 2);
-	if (!n)
-		return -EINVAL;
-
-	err = dst_setup_export(n, ctl, le);
-	if (err)
-		goto err_out_free;
-
-	dst_node_add(n);
-
-	return 0;
-
-err_out_free:
-	dst_node_put(n);
-	return err;
-}
-
-static int dst_node_remove_unload(struct dst_node *n)
-{
-	printk(KERN_INFO "STOPPED name: '%s', size: %llu.\n",
-			n->name, n->size);
-
-	if (n->disk)
-		del_gendisk(n->disk);
-
-	dst_node_remove(n);
-	dst_node_sysfs_exit(n);
-
-	/*
-	 * This is not a hack. Really.
-	 * Node's reference counter allows to implement fine grained
-	 * node freeing, but since all transactions (which hold node's
-	 * reference counter) are processed in the dedicated thread,
-	 * it is possible that reference will hit zero in that thread,
-	 * so we will not be able to exit thread and cleanup the node.
-	 *
-	 * So, we remove disk, so no new activity is possible, and
-	 * wait until all pending transaction are completed (either
-	 * in receiving thread or by timeout in workqueue), in this
-	 * case reference counter will be less or equal to 2 (once set in
-	 * dst_alloc_node() and then in connector message parser;
-	 * or when we force module unloading, and connector message
-	 * parser does not hold a reference, in this case reference
-	 * counter will be equal to 1),
-	 * and subsequent dst_node_put() calls will free the node.
-	 */
-	dprintk("%s: going to sleep with %d refcnt.\n",
-			__func__, atomic_read(&n->refcnt));
-	wait_event(n->wait, atomic_read(&n->refcnt) <= 2);
-
-	dst_node_put(n);
-	return 0;
-}
-
-/*
- * Remove node from the hash table.
- */
-static int dst_del_node(struct dst_node *n, struct dst_ctl *ctl,
-		void *data, unsigned int size)
-{
-	if (!n)
-		return -ENODEV;
-
-	return dst_node_remove_unload(n);
-}
-
-/*
- * Initialize crypto processing for given node.
- */
-static int dst_crypto_init(struct dst_node *n, struct dst_ctl *ctl,
-		void *data, unsigned int size)
-{
-	struct dst_crypto_ctl *crypto = data;
-
-	if (!n)
-		return -ENODEV;
-
-	if (size != sizeof(struct dst_crypto_ctl) + crypto->hash_keysize +
-			crypto->cipher_keysize)
-		return -EINVAL;
-
-	if (n->trans_cache)
-		return -EEXIST;
-
-	return dst_node_crypto_init(n, crypto);
-}
-
-/*
- * Security attributes for given node.
- */
-static int dst_security_init(struct dst_node *n, struct dst_ctl *ctl,
-		void *data, unsigned int size)
-{
-	struct dst_secure *s;
-
-	if (!n)
-		return -ENODEV;
-
-	if (size != sizeof(struct dst_secure_user))
-		return -EINVAL;
-
-	s = kmalloc(sizeof(struct dst_secure), GFP_KERNEL);
-	if (!s)
-		return -ENOMEM;
-
-	memcpy(&s->sec, data, size);
-
-	mutex_lock(&n->security_lock);
-	list_add_tail(&s->sec_entry, &n->security_list);
-	mutex_unlock(&n->security_lock);
-
-	return 0;
-}
-
-/*
- * Kill'em all!
- */
-static int dst_start_node(struct dst_node *n, struct dst_ctl *ctl,
-		void *data, unsigned int size)
-{
-	int err;
-
-	if (!n)
-		return -ENODEV;
-
-	if (n->trans_cache)
-		return 0;
-
-	err = n->start(n);
-	if (err)
-		return err;
-
-	printk(KERN_INFO "STARTED name: '%s', size: %llu.\n", n->name, n->size);
-	return 0;
-}
-
-typedef int (*dst_command_func)(struct dst_node *n, struct dst_ctl *ctl,
-		void *data, unsigned int size);
-
-/*
- * List of userspace commands.
- */
-static dst_command_func dst_commands[] = {
-	[DST_ADD_REMOTE] = &dst_add_remote,
-	[DST_ADD_EXPORT] = &dst_add_export,
-	[DST_DEL_NODE] = &dst_del_node,
-	[DST_CRYPTO] = &dst_crypto_init,
-	[DST_SECURITY] = &dst_security_init,
-	[DST_START] = &dst_start_node,
-};
-
-/*
- * Configuration parser.
- */
-static void cn_dst_callback(struct cn_msg *msg, struct netlink_skb_parms *nsp)
-{
-	struct dst_ctl *ctl;
-	int err;
-	struct dst_ctl_ack ack;
-	struct dst_node *n = NULL, *tmp;
-	unsigned int hash;
-
-	if (!cap_raised(nsp->eff_cap, CAP_SYS_ADMIN)) {
-		err = -EPERM;
-		goto out;
-	}
-
-	if (msg->len < sizeof(struct dst_ctl)) {
-		err = -EBADMSG;
-		goto out;
-	}
-
-	ctl = (struct dst_ctl *)msg->data;
-
-	if (ctl->cmd >= DST_CMD_MAX) {
-		err = -EINVAL;
-		goto out;
-	}
-	hash = dst_hash(ctl->name, sizeof(ctl->name));
-
-	mutex_lock(&dst_hash_lock);
-	list_for_each_entry(tmp, &dst_hashtable[hash], node_entry) {
-		if (!memcmp(tmp->name, ctl->name, sizeof(tmp->name))) {
-			n = tmp;
-			dst_node_get(n);
-			break;
-		}
-	}
-	mutex_unlock(&dst_hash_lock);
-
-	err = dst_commands[ctl->cmd](n, ctl, msg->data + sizeof(struct dst_ctl),
-			msg->len - sizeof(struct dst_ctl));
-
-	dst_node_put(n);
-out:
-	memcpy(&ack.msg, msg, sizeof(struct cn_msg));
-
-	ack.msg.ack = msg->ack + 1;
-	ack.msg.len = sizeof(struct dst_ctl_ack) - sizeof(struct cn_msg);
-
-	ack.error = err;
-
-	cn_netlink_send(&ack.msg, 0, GFP_KERNEL);
-}
-
-/*
- * Global initialization: sysfs, hash table, block device registration,
- * connector and various caches.
- */
-static int __init dst_sysfs_init(void)
-{
-	return bus_register(&dst_dev_bus_type);
-}
-
-static void dst_sysfs_exit(void)
-{
-	bus_unregister(&dst_dev_bus_type);
-}
-
-static int __init dst_hashtable_init(void)
-{
-	unsigned int i;
-
-	dst_hashtable = kcalloc(dst_hashtable_size, sizeof(struct list_head),
-			GFP_KERNEL);
-	if (!dst_hashtable)
-		return -ENOMEM;
-
-	for (i = 0; i < dst_hashtable_size; ++i)
-		INIT_LIST_HEAD(&dst_hashtable[i]);
-
-	return 0;
-}
-
-static void dst_hashtable_exit(void)
-{
-	unsigned int i;
-	struct dst_node *n, *tmp;
-
-	for (i = 0; i < dst_hashtable_size; ++i) {
-		list_for_each_entry_safe(n, tmp, &dst_hashtable[i], node_entry) {
-			dst_node_remove_unload(n);
-		}
-	}
-
-	kfree(dst_hashtable);
-}
-
-static int __init dst_sys_init(void)
-{
-	int err = -ENOMEM;
-
-	err = dst_hashtable_init();
-	if (err)
-		goto err_out_exit;
-
-	err = dst_export_init();
-	if (err)
-		goto err_out_hashtable_exit;
-
-	err = register_blkdev(dst_major, DST_NAME);
-	if (err < 0)
-		goto err_out_export_exit;
-	if (err)
-		dst_major = err;
-
-	err = dst_sysfs_init();
-	if (err)
-		goto err_out_unregister;
-
-	err = cn_add_callback(&cn_dst_id, "DST", cn_dst_callback);
-	if (err)
-		goto err_out_sysfs_exit;
-
-	printk(KERN_INFO "Distributed storage, '%s' release.\n", dst_name);
-
-	return 0;
-
-err_out_sysfs_exit:
-	dst_sysfs_exit();
-err_out_unregister:
-	unregister_blkdev(dst_major, DST_NAME);
-err_out_export_exit:
-	dst_export_exit();
-err_out_hashtable_exit:
-	dst_hashtable_exit();
-err_out_exit:
-	return err;
-}
-
-static void __exit dst_sys_exit(void)
-{
-	cn_del_callback(&cn_dst_id);
-	unregister_blkdev(dst_major, DST_NAME);
-	dst_hashtable_exit();
-	dst_sysfs_exit();
-	dst_export_exit();
-}
-
-module_init(dst_sys_init);
-module_exit(dst_sys_exit);
-
-MODULE_DESCRIPTION("Distributed storage");
-MODULE_AUTHOR("Evgeniy Polyakov <zbr@ioremap.net>");
-MODULE_LICENSE("GPL");
diff --git a/drivers/staging/dst/export.c b/drivers/staging/dst/export.c
deleted file mode 100644
index c324230e8b60..000000000000
--- a/drivers/staging/dst/export.c
+++ /dev/null
@@ -1,660 +0,0 @@
-/*
- * 2007+ Copyright (c) Evgeniy Polyakov <zbr@ioremap.net>
- * All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
-
-#include <linux/blkdev.h>
-#include <linux/bio.h>
-#include <linux/dst.h>
-#include <linux/in.h>
-#include <linux/in6.h>
-#include <linux/poll.h>
-#include <linux/slab.h>
-#include <linux/socket.h>
-
-#include <net/sock.h>
-
-/*
- * Export bioset is used for server block IO requests.
- */
-static struct bio_set *dst_bio_set;
-
-int __init dst_export_init(void)
-{
-	int err = -ENOMEM;
-
-	dst_bio_set = bioset_create(32, sizeof(struct dst_export_priv));
-	if (!dst_bio_set)
-		goto err_out_exit;
-
-	return 0;
-
-err_out_exit:
-	return err;
-}
-
-void dst_export_exit(void)
-{
-	bioset_free(dst_bio_set);
-}
-
-/*
- * When client connects and autonegotiates with the server node,
- * its permissions are checked in a security attributes and sent
- * back.
- */
-static unsigned int dst_check_permissions(struct dst_state *main,
-		struct dst_state *st)
-{
-	struct dst_node *n = main->node;
-	struct dst_secure *sentry;
-	struct dst_secure_user *s;
-	struct saddr *sa = &st->ctl.addr;
-	unsigned int perm = 0;
-
-	mutex_lock(&n->security_lock);
-	list_for_each_entry(sentry, &n->security_list, sec_entry) {
-		s = &sentry->sec;
-
-		if (s->addr.sa_family != sa->sa_family)
-			continue;
-
-		if (s->addr.sa_data_len != sa->sa_data_len)
-			continue;
-
-		/*
-		 * This '2' below is a port field. This may be very wrong to do
-		 * in atalk for example though. If there will be any need
-		 * to extent protocol to something else, I can create
-		 * per-family helpers and use them instead of this memcmp.
-		 */
-		if (memcmp(s->addr.sa_data + 2, sa->sa_data + 2,
-					sa->sa_data_len - 2))
-			continue;
-
-		perm = s->permissions;
-	}
-	mutex_unlock(&n->security_lock);
-
-	return perm;
-}
-
-/*
- * Accept new client: allocate appropriate network state and check permissions.
- */
-static struct dst_state *dst_accept_client(struct dst_state *st)
-{
-	unsigned int revents = 0;
-	unsigned int err_mask = POLLERR | POLLHUP | POLLRDHUP;
-	unsigned int mask = err_mask | POLLIN;
-	struct dst_node *n = st->node;
-	int err = 0;
-	struct socket *sock = NULL;
-	struct dst_state *new;
-
-	while (!err && !sock) {
-		revents = dst_state_poll(st);
-
-		if (!(revents & mask)) {
-			DEFINE_WAIT(wait);
-
-			for (;;) {
-				prepare_to_wait(&st->thread_wait,
-						&wait, TASK_INTERRUPTIBLE);
-				if (!n->trans_scan_timeout || st->need_exit)
-					break;
-
-				revents = dst_state_poll(st);
-
-				if (revents & mask)
-					break;
-
-				if (signal_pending(current))
-					break;
-
-				/*
-				 * Magic HZ? Polling check above is not safe in
-				 * all cases (like socket reset in BH context),
-				 * so it is simpler just to postpone it to the
-				 * process context instead of implementing
-				 * special locking there.
-				 */
-				schedule_timeout(HZ);
-			}
-			finish_wait(&st->thread_wait, &wait);
-		}
-
-		err = -ECONNRESET;
-		dst_state_lock(st);
-
-		dprintk("%s: st: %p, revents: %x [err: %d, in: %d].\n",
-			__func__, st, revents, revents & err_mask,
-			revents & POLLIN);
-
-		if (revents & err_mask) {
-			dprintk("%s: revents: %x, socket: %p, err: %d.\n",
-					__func__, revents, st->socket, err);
-			err = -ECONNRESET;
-		}
-
-		if (!n->trans_scan_timeout || st->need_exit)
-			err = -ENODEV;
-
-		if (st->socket && (revents & POLLIN))
-			err = kernel_accept(st->socket, &sock, 0);
-
-		dst_state_unlock(st);
-	}
-
-	if (err)
-		goto err_out_exit;
-
-	new = dst_state_alloc(st->node);
-	if (IS_ERR(new)) {
-		err = -ENOMEM;
-		goto err_out_release;
-	}
-	new->socket = sock;
-
-	new->ctl.addr.sa_data_len = sizeof(struct sockaddr);
-	err = kernel_getpeername(sock, (struct sockaddr *)&new->ctl.addr,
-			(int *)&new->ctl.addr.sa_data_len);
-	if (err)
-		goto err_out_put;
-
-	new->permissions = dst_check_permissions(st, new);
-	if (new->permissions == 0) {
-		err = -EPERM;
-		dst_dump_addr(sock, (struct sockaddr *)&new->ctl.addr,
-				"Client is not allowed to connect");
-		goto err_out_put;
-	}
-
-	err = dst_poll_init(new);
-	if (err)
-		goto err_out_put;
-
-	dst_dump_addr(sock, (struct sockaddr *)&new->ctl.addr,
-			"Connected client");
-
-	return new;
-
-err_out_put:
-	dst_state_put(new);
-err_out_release:
-	sock_release(sock);
-err_out_exit:
-	return ERR_PTR(err);
-}
-
-/*
- * Each server's block request sometime finishes.
- * Usually it happens in hard irq context of the appropriate controller,
- * so to play good with all cases we just queue BIO into the queue
- * and wake up processing thread, which gets completed request and
- * send (encrypting if needed) it back to the client (if it was a read
- * request), or sends back reply that writing successfully completed.
- */
-static int dst_export_process_request_queue(struct dst_state *st)
-{
-	unsigned long flags;
-	struct dst_export_priv *p = NULL;
-	struct bio *bio;
-	int err = 0;
-
-	while (!list_empty(&st->request_list)) {
-		spin_lock_irqsave(&st->request_lock, flags);
-		if (!list_empty(&st->request_list)) {
-			p = list_first_entry(&st->request_list,
-				struct dst_export_priv, request_entry);
-			list_del(&p->request_entry);
-		}
-		spin_unlock_irqrestore(&st->request_lock, flags);
-
-		if (!p)
-			break;
-
-		bio = p->bio;
-
-		if (dst_need_crypto(st->node) && (bio_data_dir(bio) == READ))
-			err = dst_export_crypto(st->node, bio);
-		else
-			err = dst_export_send_bio(bio);
-
-		if (err)
-			break;
-	}
-
-	return err;
-}
-
-/*
- * Cleanup export state.
- * It has to wait until all requests are finished,
- * and then free them all.
- */
-static void dst_state_cleanup_export(struct dst_state *st)
-{
-	struct dst_export_priv *p;
-	unsigned long flags;
-
-	/*
-	 * This loop waits for all pending bios to be completed and freed.
-	 */
-	while (atomic_read(&st->refcnt) > 1) {
-		dprintk("%s: st: %p, refcnt: %d, list_empty: %d.\n",
-				__func__, st, atomic_read(&st->refcnt),
-				list_empty(&st->request_list));
-		wait_event_timeout(st->thread_wait,
-				(atomic_read(&st->refcnt) == 1) ||
-				!list_empty(&st->request_list),
-				HZ/2);
-
-		while (!list_empty(&st->request_list)) {
-			p = NULL;
-			spin_lock_irqsave(&st->request_lock, flags);
-			if (!list_empty(&st->request_list)) {
-				p = list_first_entry(&st->request_list,
-					struct dst_export_priv, request_entry);
-				list_del(&p->request_entry);
-			}
-			spin_unlock_irqrestore(&st->request_lock, flags);
-
-			if (p)
-				bio_put(p->bio);
-
-			dprintk("%s: st: %p, refcnt: %d, list_empty: %d, p: "
-				"%p.\n", __func__, st, atomic_read(&st->refcnt),
-				list_empty(&st->request_list), p);
-		}
-	}
-
-	dst_state_put(st);
-}
-
-/*
- * Client accepting thread.
- * Not only accepts new connection, but also schedules receiving thread
- * and performs request completion described above.
- */
-static int dst_accept(void *init_data, void *schedule_data)
-{
-	struct dst_state *main_st = schedule_data;
-	struct dst_node *n = init_data;
-	struct dst_state *st;
-	int err;
-
-	while (n->trans_scan_timeout && !main_st->need_exit) {
-		dprintk("%s: main_st: %p, n: %p.\n", __func__, main_st, n);
-		st = dst_accept_client(main_st);
-		if (IS_ERR(st))
-			continue;
-
-		err = dst_state_schedule_receiver(st);
-		if (!err) {
-			while (n->trans_scan_timeout) {
-				err = wait_event_interruptible_timeout(st->thread_wait,
-					!list_empty(&st->request_list) ||
-					!n->trans_scan_timeout ||
-					st->need_exit,
-					HZ);
-
-				if (!n->trans_scan_timeout || st->need_exit)
-					break;
-
-				if (list_empty(&st->request_list))
-					continue;
-
-				err = dst_export_process_request_queue(st);
-				if (err)
-					break;
-			}
-
-			st->need_exit = 1;
-			wake_up(&st->thread_wait);
-		}
-
-		dst_state_cleanup_export(st);
-	}
-
-	dprintk("%s: freeing listening socket st: %p.\n", __func__, main_st);
-
-	dst_state_lock(main_st);
-	dst_poll_exit(main_st);
-	dst_state_socket_release(main_st);
-	dst_state_unlock(main_st);
-	dst_state_put(main_st);
-	dprintk("%s: freed listening socket st: %p.\n", __func__, main_st);
-
-	return 0;
-}
-
-int dst_start_export(struct dst_node *n)
-{
-	if (list_empty(&n->security_list)) {
-		printk(KERN_ERR "You are trying to export node '%s' "
-				"without security attributes.\nNo clients will "
-				"be allowed to connect. Exiting.\n", n->name);
-		return -EINVAL;
-	}
-	return dst_node_trans_init(n, sizeof(struct dst_export_priv));
-}
-
-/*
- * Initialize listening state and schedule accepting thread.
- */
-int dst_node_init_listened(struct dst_node *n, struct dst_export_ctl *le)
-{
-	struct dst_state *st;
-	int err = -ENOMEM;
-	struct dst_network_ctl *ctl = &le->ctl;
-
-	memcpy(&n->info->net, ctl, sizeof(struct dst_network_ctl));
-
-	st = dst_state_alloc(n);
-	if (IS_ERR(st)) {
-		err = PTR_ERR(st);
-		goto err_out_exit;
-	}
-	memcpy(&st->ctl, ctl, sizeof(struct dst_network_ctl));
-
-	err = dst_state_socket_create(st);
-	if (err)
-		goto err_out_put;
-
-	st->socket->sk->sk_reuse = 1;
-
-	err = kernel_bind(st->socket, (struct sockaddr *)&ctl->addr,
-			ctl->addr.sa_data_len);
-	if (err)
-		goto err_out_socket_release;
-
-	err = kernel_listen(st->socket, 1024);
-	if (err)
-		goto err_out_socket_release;
-	n->state = st;
-
-	err = dst_poll_init(st);
-	if (err)
-		goto err_out_socket_release;
-
-	dst_state_get(st);
-
-	err = thread_pool_schedule(n->pool, dst_thread_setup,
-			dst_accept, st, MAX_SCHEDULE_TIMEOUT);
-	if (err)
-		goto err_out_poll_exit;
-
-	return 0;
-
-err_out_poll_exit:
-	dst_poll_exit(st);
-err_out_socket_release:
-	dst_state_socket_release(st);
-err_out_put:
-	dst_state_put(st);
-err_out_exit:
-	n->state = NULL;
-	return err;
-}
-
-/*
- * Free bio and related private data.
- * Also drop a reference counter for appropriate state,
- * which waits when there are no more block IOs in-flight.
- */
-static void dst_bio_destructor(struct bio *bio)
-{
-	struct bio_vec *bv;
-	struct dst_export_priv *priv = bio->bi_private;
-	int i;
-
-	bio_for_each_segment(bv, bio, i) {
-		if (!bv->bv_page)
-			break;
-
-		__free_page(bv->bv_page);
-	}
-
-	if (priv)
-		dst_state_put(priv->state);
-	bio_free(bio, dst_bio_set);
-}
-
-/*
- * Block IO completion. Queue request to be sent back to
- * the client (or just confirmation).
- */
-static void dst_bio_end_io(struct bio *bio, int err)
-{
-	struct dst_export_priv *p = bio->bi_private;
-	struct dst_state *st = p->state;
-	unsigned long flags;
-
-	spin_lock_irqsave(&st->request_lock, flags);
-	list_add_tail(&p->request_entry, &st->request_list);
-	spin_unlock_irqrestore(&st->request_lock, flags);
-
-	wake_up(&st->thread_wait);
-}
-
-/*
- * Allocate read request for the server.
- */
-static int dst_export_read_request(struct bio *bio, unsigned int total_size)
-{
-	unsigned int size;
-	struct page *page;
-	int err;
-
-	while (total_size) {
-		err = -ENOMEM;
-		page = alloc_page(GFP_KERNEL);
-		if (!page)
-			goto err_out_exit;
-
-		size = min_t(unsigned int, PAGE_SIZE, total_size);
-
-		err = bio_add_page(bio, page, size, 0);
-		dprintk("%s: bio: %llu/%u, size: %u, err: %d.\n",
-				__func__, (u64)bio->bi_sector, bio->bi_size,
-				size, err);
-		if (err <= 0)
-			goto err_out_free_page;
-
-		total_size -= size;
-	}
-
-	return 0;
-
-err_out_free_page:
-	__free_page(page);
-err_out_exit:
-	return err;
-}
-
-/*
- * Allocate write request for the server.
- * Should not only get pages, but also read data from the network.
- */
-static int dst_export_write_request(struct dst_state *st,
-		struct bio *bio, unsigned int total_size)
-{
-	unsigned int size;
-	struct page *page;
-	void *data;
-	int err;
-
-	while (total_size) {
-		err = -ENOMEM;
-		page = alloc_page(GFP_KERNEL);
-		if (!page)
-			goto err_out_exit;
-
-		data = kmap(page);
-		if (!data)
-			goto err_out_free_page;
-
-		size = min_t(unsigned int, PAGE_SIZE, total_size);
-
-		err = dst_data_recv(st, data, size);
-		if (err)
-			goto err_out_unmap_page;
-
-		err = bio_add_page(bio, page, size, 0);
-		if (err <= 0)
-			goto err_out_unmap_page;
-
-		kunmap(page);
-
-		total_size -= size;
-	}
-
-	return 0;
-
-err_out_unmap_page:
-	kunmap(page);
-err_out_free_page:
-	__free_page(page);
-err_out_exit:
-	return err;
-}
-
-/*
- * Groovy, we've gotten an IO request from the client.
- * Allocate BIO from the bioset, private data from the mempool
- * and lots of pages for IO.
- */
-int dst_process_io(struct dst_state *st)
-{
-	struct dst_node *n = st->node;
-	struct dst_cmd *cmd = st->data;
-	struct bio *bio;
-	struct dst_export_priv *priv;
-	int err = -ENOMEM;
-
-	if (unlikely(!n->bdev)) {
-		err = -EINVAL;
-		goto err_out_exit;
-	}
-
-	bio = bio_alloc_bioset(GFP_KERNEL,
-			PAGE_ALIGN(cmd->size) >> PAGE_SHIFT,
-			dst_bio_set);
-	if (!bio)
-		goto err_out_exit;
-
-	priv = (struct dst_export_priv *)(((void *)bio) -
-			sizeof (struct dst_export_priv));
-
-	priv->state = dst_state_get(st);
-	priv->bio = bio;
-
-	bio->bi_private = priv;
-	bio->bi_end_io = dst_bio_end_io;
-	bio->bi_destructor = dst_bio_destructor;
-	bio->bi_bdev = n->bdev;
-
-	/*
-	 * Server side is only interested in two low bits:
-	 * uptodate (set by itself actually) and rw block
-	 */
-	bio->bi_flags |= cmd->flags & 3;
-
-	bio->bi_rw = cmd->rw;
-	bio->bi_size = 0;
-	bio->bi_sector = cmd->sector;
-
-	dst_bio_to_cmd(bio, &priv->cmd, DST_IO_RESPONSE, cmd->id);
-
-	priv->cmd.flags = 0;
-	priv->cmd.size = cmd->size;
-
-	if (bio_data_dir(bio) == WRITE) {
-		err = dst_recv_cdata(st, priv->cmd.hash);
-		if (err)
-			goto err_out_free;
-
-		err = dst_export_write_request(st, bio, cmd->size);
-		if (err)
-			goto err_out_free;
-
-		if (dst_need_crypto(n))
-			return dst_export_crypto(n, bio);
-	} else {
-		err = dst_export_read_request(bio, cmd->size);
-		if (err)
-			goto err_out_free;
-	}
-
-	dprintk("%s: bio: %llu/%u, rw: %lu, dir: %lu, flags: %lx, phys: %d.\n",
-			__func__, (u64)bio->bi_sector, bio->bi_size,
-			bio->bi_rw, bio_data_dir(bio),
-			bio->bi_flags, bio->bi_phys_segments);
-
-	generic_make_request(bio);
-
-	return 0;
-
-err_out_free:
-	bio_put(bio);
-err_out_exit:
-	return err;
-}
-
-/*
- * Ok, block IO is ready, let's send it back to the client...
- */
-int dst_export_send_bio(struct bio *bio)
-{
-	struct dst_export_priv *p = bio->bi_private;
-	struct dst_state *st = p->state;
-	struct dst_cmd *cmd = &p->cmd;
-	int err;
-
-	dprintk("%s: id: %llu, bio: %llu/%u, csize: %u, flags: %lu, rw: %lu.\n",
-			__func__, cmd->id, (u64)bio->bi_sector, bio->bi_size,
-			cmd->csize, bio->bi_flags, bio->bi_rw);
-
-	dst_convert_cmd(cmd);
-
-	dst_state_lock(st);
-	if (!st->socket) {
-		err = -ECONNRESET;
-		goto err_out_unlock;
-	}
-
-	if (bio_data_dir(bio) == WRITE) {
-		/* ... or just confirmation that writing has completed. */
-		cmd->size = cmd->csize = 0;
-		err = dst_data_send_header(st->socket, cmd,
-				sizeof(struct dst_cmd), 0);
-		if (err)
-			goto err_out_unlock;
-	} else {
-		err = dst_send_bio(st, cmd, bio);
-		if (err)
-			goto err_out_unlock;
-	}
-
-	dst_state_unlock(st);
-
-	bio_put(bio);
-	return 0;
-
-err_out_unlock:
-	dst_state_unlock(st);
-
-	bio_put(bio);
-	return err;
-}
diff --git a/drivers/staging/dst/state.c b/drivers/staging/dst/state.c
deleted file mode 100644
index 02a05e6c48c3..000000000000
--- a/drivers/staging/dst/state.c
+++ /dev/null
@@ -1,844 +0,0 @@
-/*
- * 2007+ Copyright (c) Evgeniy Polyakov <zbr@ioremap.net>
- * All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
-
-#include <linux/buffer_head.h>
-#include <linux/blkdev.h>
-#include <linux/bio.h>
-#include <linux/connector.h>
-#include <linux/dst.h>
-#include <linux/device.h>
-#include <linux/in.h>
-#include <linux/in6.h>
-#include <linux/socket.h>
-#include <linux/slab.h>
-
-#include <net/sock.h>
-
-/*
- * Polling machinery.
- */
-
-struct dst_poll_helper {
-	poll_table		pt;
-	struct dst_state	*st;
-};
-
-static int dst_queue_wake(wait_queue_t *wait, unsigned mode,
-		int sync, void *key)
-{
-	struct dst_state *st = container_of(wait, struct dst_state, wait);
-
-	wake_up(&st->thread_wait);
-	return 1;
-}
-
-static void dst_queue_func(struct file *file, wait_queue_head_t *whead,
-				 poll_table *pt)
-{
-	struct dst_state *st = container_of(pt, struct dst_poll_helper, pt)->st;
-
-	st->whead = whead;
-	init_waitqueue_func_entry(&st->wait, dst_queue_wake);
-	add_wait_queue(whead, &st->wait);
-}
-
-void dst_poll_exit(struct dst_state *st)
-{
-	if (st->whead) {
-		remove_wait_queue(st->whead, &st->wait);
-		st->whead = NULL;
-	}
-}
-
-int dst_poll_init(struct dst_state *st)
-{
-	struct dst_poll_helper ph;
-
-	ph.st = st;
-	init_poll_funcptr(&ph.pt, &dst_queue_func);
-
-	st->socket->ops->poll(NULL, st->socket, &ph.pt);
-	return 0;
-}
-
-/*
- * Header receiving function - may block.
- */
-static int dst_data_recv_header(struct socket *sock,
-		void *data, unsigned int size, int block)
-{
-	struct msghdr msg;
-	struct kvec iov;
-	int err;
-
-	iov.iov_base = data;
-	iov.iov_len = size;
-
-	msg.msg_iov = (struct iovec *)&iov;
-	msg.msg_iovlen = 1;
-	msg.msg_name = NULL;
-	msg.msg_namelen = 0;
-	msg.msg_control = NULL;
-	msg.msg_controllen = 0;
-	msg.msg_flags = (block) ? MSG_WAITALL : MSG_DONTWAIT;
-
-	err = kernel_recvmsg(sock, &msg, &iov, 1, iov.iov_len,
-			msg.msg_flags);
-	if (err != size)
-		return -1;
-
-	return 0;
-}
-
-/*
- * Header sending function - may block.
- */
-int dst_data_send_header(struct socket *sock,
-		void *data, unsigned int size, int more)
-{
-	struct msghdr msg;
-	struct kvec iov;
-	int err;
-
-	iov.iov_base = data;
-	iov.iov_len = size;
-
-	msg.msg_iov = (struct iovec *)&iov;
-	msg.msg_iovlen = 1;
-	msg.msg_name = NULL;
-	msg.msg_namelen = 0;
-	msg.msg_control = NULL;
-	msg.msg_controllen = 0;
-	msg.msg_flags = MSG_WAITALL | (more ? MSG_MORE : 0);
-
-	err = kernel_sendmsg(sock, &msg, &iov, 1, iov.iov_len);
-	if (err != size) {
-		dprintk("%s: size: %u, more: %d, err: %d.\n",
-				__func__, size, more, err);
-		return -1;
-	}
-
-	return 0;
-}
-
-/*
- * Block autoconfiguration: request size of the storage and permissions.
- */
-static int dst_request_remote_config(struct dst_state *st)
-{
-	struct dst_node *n = st->node;
-	int err = -EINVAL;
-	struct dst_cmd *cmd = st->data;
-
-	memset(cmd, 0, sizeof(struct dst_cmd));
-	cmd->cmd = DST_CFG;
-
-	dst_convert_cmd(cmd);
-
-	err = dst_data_send_header(st->socket, cmd, sizeof(struct dst_cmd), 0);
-	if (err)
-		goto out;
-
-	err = dst_data_recv_header(st->socket, cmd, sizeof(struct dst_cmd), 1);
-	if (err)
-		goto out;
-
-	dst_convert_cmd(cmd);
-
-	if (cmd->cmd != DST_CFG) {
-		err = -EINVAL;
-		dprintk("%s: checking result: cmd: %d, size reported: %llu.\n",
-			__func__, cmd->cmd, cmd->sector);
-		goto out;
-	}
-
-	if (n->size != 0)
-		n->size = min_t(loff_t, n->size, cmd->sector);
-	else
-		n->size = cmd->sector;
-
-	n->info->size = n->size;
-	st->permissions = cmd->rw;
-
-out:
-	dprintk("%s: n: %p, err: %d, size: %llu, permission: %x.\n",
-			__func__, n, err, n->size, st->permissions);
-	return err;
-}
-
-/*
- * Socket machinery.
- */
-
-#define DST_DEFAULT_TIMEO	20000
-
-int dst_state_socket_create(struct dst_state *st)
-{
-	int err;
-	struct socket *sock;
-	struct dst_network_ctl *ctl = &st->ctl;
-
-	err = sock_create(ctl->addr.sa_family, ctl->type, ctl->proto, &sock);
-	if (err < 0)
-		return err;
-
-	sock->sk->sk_sndtimeo = sock->sk->sk_rcvtimeo =
-		msecs_to_jiffies(DST_DEFAULT_TIMEO);
-	sock->sk->sk_allocation = GFP_NOIO;
-
-	st->socket = st->read_socket = sock;
-	return 0;
-}
-
-void dst_state_socket_release(struct dst_state *st)
-{
-	dprintk("%s: st: %p, socket: %p, n: %p.\n",
-			__func__, st, st->socket, st->node);
-	if (st->socket) {
-		sock_release(st->socket);
-		st->socket = NULL;
-		st->read_socket = NULL;
-	}
-}
-
-void dst_dump_addr(struct socket *sk, struct sockaddr *sa, char *str)
-{
-	if (sk->ops->family == AF_INET) {
-		struct sockaddr_in *sin = (struct sockaddr_in *)sa;
-		printk(KERN_INFO "%s %u.%u.%u.%u:%d.\n", str,
-			NIPQUAD(sin->sin_addr.s_addr), ntohs(sin->sin_port));
-	} else if (sk->ops->family == AF_INET6) {
-		struct sockaddr_in6 *sin = (struct sockaddr_in6 *)sa;
-		printk(KERN_INFO "%s %pi6:%d",
-			str, &sin->sin6_addr, ntohs(sin->sin6_port));
-	}
-}
-
-void dst_state_exit_connected(struct dst_state *st)
-{
-	if (st->socket) {
-		dst_poll_exit(st);
-		st->socket->ops->shutdown(st->socket, 2);
-
-		dst_dump_addr(st->socket, (struct sockaddr *)&st->ctl.addr,
-				"Disconnected peer");
-		dst_state_socket_release(st);
-	}
-}
-
-static int dst_state_init_connected(struct dst_state *st)
-{
-	int err;
-	struct dst_network_ctl *ctl = &st->ctl;
-
-	err = dst_state_socket_create(st);
-	if (err)
-		goto err_out_exit;
-
-	err = kernel_connect(st->socket, (struct sockaddr *)&st->ctl.addr,
-			st->ctl.addr.sa_data_len, 0);
-	if (err)
-		goto err_out_release;
-
-	err = dst_poll_init(st);
-	if (err)
-		goto err_out_release;
-
-	dst_dump_addr(st->socket, (struct sockaddr *)&ctl->addr,
-			"Connected to peer");
-
-	return 0;
-
-err_out_release:
-	dst_state_socket_release(st);
-err_out_exit:
-	return err;
-}
-
-/*
- * State reset is used to reconnect to the remote peer.
- * May fail, but who cares, we will try again later.
- */
-static inline void dst_state_reset_nolock(struct dst_state *st)
-{
-	dst_state_exit_connected(st);
-	dst_state_init_connected(st);
-}
-
-static inline void dst_state_reset(struct dst_state *st)
-{
-	dst_state_lock(st);
-	dst_state_reset_nolock(st);
-	dst_state_unlock(st);
-}
-
-/*
- * Basic network sending/receiving functions.
- * Blocked mode is used.
- */
-static int dst_data_recv_raw(struct dst_state *st, void *buf, u64 size)
-{
-	struct msghdr msg;
-	struct kvec iov;
-	int err;
-
-	BUG_ON(!size);
-
-	iov.iov_base = buf;
-	iov.iov_len = size;
-
-	msg.msg_iov = (struct iovec *)&iov;
-	msg.msg_iovlen = 1;
-	msg.msg_name = NULL;
-	msg.msg_namelen = 0;
-	msg.msg_control = NULL;
-	msg.msg_controllen = 0;
-	msg.msg_flags = MSG_DONTWAIT;
-
-	err = kernel_recvmsg(st->socket, &msg, &iov, 1, iov.iov_len,
-			msg.msg_flags);
-	if (err <= 0) {
-		dprintk("%s: failed to recv data: size: %llu, err: %d.\n",
-				__func__, size, err);
-		if (err == 0)
-			err = -ECONNRESET;
-
-		dst_state_exit_connected(st);
-	}
-
-	return err;
-}
-
-/*
- * Ping command to early detect failed nodes.
- */
-static int dst_send_ping(struct dst_state *st)
-{
-	struct dst_cmd *cmd = st->data;
-	int err = -ECONNRESET;
-
-	dst_state_lock(st);
-	if (st->socket) {
-		memset(cmd, 0, sizeof(struct dst_cmd));
-
-		cmd->cmd = __cpu_to_be32(DST_PING);
-
-		err = dst_data_send_header(st->socket, cmd,
-				sizeof(struct dst_cmd), 0);
-	}
-	dprintk("%s: st: %p, socket: %p, err: %d.\n", __func__,
-			st, st->socket, err);
-	dst_state_unlock(st);
-
-	return err;
-}
-
-/*
- * Receiving function, which should either return error or read
- * whole block request. If there was no traffic for a one second,
- * send a ping, since remote node may die.
- */
-int dst_data_recv(struct dst_state *st, void *data, unsigned int size)
-{
-	unsigned int revents = 0;
-	unsigned int err_mask = POLLERR | POLLHUP | POLLRDHUP;
-	unsigned int mask = err_mask | POLLIN;
-	struct dst_node *n = st->node;
-	int err = 0;
-
-	while (size && !err) {
-		revents = dst_state_poll(st);
-
-		if (!(revents & mask)) {
-			DEFINE_WAIT(wait);
-
-			for (;;) {
-				prepare_to_wait(&st->thread_wait, &wait,
-						TASK_INTERRUPTIBLE);
-				if (!n->trans_scan_timeout || st->need_exit)
-					break;
-
-				revents = dst_state_poll(st);
-
-				if (revents & mask)
-					break;
-
-				if (signal_pending(current))
-					break;
-
-				if (!schedule_timeout(HZ)) {
-					err = dst_send_ping(st);
-					if (err)
-						return err;
-				}
-
-				continue;
-			}
-			finish_wait(&st->thread_wait, &wait);
-		}
-
-		err = -ECONNRESET;
-		dst_state_lock(st);
-
-		if (st->socket && (st->read_socket == st->socket) &&
-				(revents & POLLIN)) {
-			err = dst_data_recv_raw(st, data, size);
-			if (err > 0) {
-				data += err;
-				size -= err;
-				err = 0;
-			}
-		}
-
-		if (revents & err_mask || !st->socket) {
-			dprintk("%s: revents: %x, socket: %p, size: %u, "
-					"err: %d.\n", __func__, revents,
-					st->socket, size, err);
-			err = -ECONNRESET;
-		}
-
-		dst_state_unlock(st);
-
-		if (!n->trans_scan_timeout)
-			err = -ENODEV;
-	}
-
-	return err;
-}
-
-/*
- * Send block autoconf reply.
- */
-static int dst_process_cfg(struct dst_state *st)
-{
-	struct dst_node *n = st->node;
-	struct dst_cmd *cmd = st->data;
-	int err;
-
-	cmd->sector = n->size;
-	cmd->rw = st->permissions;
-
-	dst_convert_cmd(cmd);
-
-	dst_state_lock(st);
-	err = dst_data_send_header(st->socket, cmd, sizeof(struct dst_cmd), 0);
-	dst_state_unlock(st);
-
-	return err;
-}
-
-/*
- * Receive block IO from the network.
- */
-static int dst_recv_bio(struct dst_state *st, struct bio *bio,
-		unsigned int total_size)
-{
-	struct bio_vec *bv;
-	int i, err;
-	void *data;
-	unsigned int sz;
-
-	bio_for_each_segment(bv, bio, i) {
-		sz = min(total_size, bv->bv_len);
-
-		dprintk("%s: bio: %llu/%u, total: %u, len: %u, sz: %u, "
-				"off: %u.\n", __func__, (u64)bio->bi_sector,
-				bio->bi_size, total_size, bv->bv_len, sz,
-				bv->bv_offset);
-
-		data = kmap(bv->bv_page) + bv->bv_offset;
-		err = dst_data_recv(st, data, sz);
-		kunmap(bv->bv_page);
-
-		bv->bv_len = sz;
-
-		if (err)
-			return err;
-
-		total_size -= sz;
-		if (total_size == 0)
-			break;
-	}
-
-	return 0;
-}
-
-/*
- * Our block IO has just completed and arrived: get it.
- */
-static int dst_process_io_response(struct dst_state *st)
-{
-	struct dst_node *n = st->node;
-	struct dst_cmd *cmd = st->data;
-	struct dst_trans *t;
-	int err = 0;
-	struct bio *bio;
-
-	mutex_lock(&n->trans_lock);
-	t = dst_trans_search(n, cmd->id);
-	mutex_unlock(&n->trans_lock);
-
-	if (!t)
-		goto err_out_exit;
-
-	bio = t->bio;
-
-	dprintk("%s: bio: %llu/%u, cmd_size: %u, csize: %u, dir: %lu.\n",
-		__func__, (u64)bio->bi_sector, bio->bi_size, cmd->size,
-		cmd->csize, bio_data_dir(bio));
-
-	if (bio_data_dir(bio) == READ) {
-		if (bio->bi_size != cmd->size - cmd->csize)
-			goto err_out_exit;
-
-		if (dst_need_crypto(n)) {
-			err = dst_recv_cdata(st, t->cmd.hash);
-			if (err)
-				goto err_out_exit;
-		}
-
-		err = dst_recv_bio(st, t->bio, bio->bi_size);
-		if (err)
-			goto err_out_exit;
-
-		if (dst_need_crypto(n))
-			return dst_trans_crypto(t);
-	} else {
-		err = -EBADMSG;
-		if (cmd->size || cmd->csize)
-			goto err_out_exit;
-	}
-
-	dst_trans_remove(t);
-	dst_trans_put(t);
-
-	return 0;
-
-err_out_exit:
-	return err;
-}
-
-/*
- * Receive crypto data.
- */
-int dst_recv_cdata(struct dst_state *st, void *cdata)
-{
-	struct dst_cmd *cmd = st->data;
-	struct dst_node *n = st->node;
-	struct dst_crypto_ctl *c = &n->crypto;
-	int err;
-
-	if (cmd->csize != c->crypto_attached_size) {
-		dprintk("%s: cmd: cmd: %u, sector: %llu, size: %u, "
-				"csize: %u != digest size %u.\n",
-				__func__, cmd->cmd, cmd->sector, cmd->size,
-				cmd->csize, c->crypto_attached_size);
-		err = -EINVAL;
-		goto err_out_exit;
-	}
-
-	err = dst_data_recv(st, cdata, cmd->csize);
-	if (err)
-		goto err_out_exit;
-
-	cmd->size -= cmd->csize;
-	return 0;
-
-err_out_exit:
-	return err;
-}
-
-/*
- * Receive the command and start its processing.
- */
-static int dst_recv_processing(struct dst_state *st)
-{
-	int err = -EINTR;
-	struct dst_cmd *cmd = st->data;
-
-	/*
-	 * If socket will be reset after this statement, then
-	 * dst_data_recv() will just fail and loop will
-	 * start again, so it can be done without any locks.
-	 *
-	 * st->read_socket is needed to prevents state machine
-	 * breaking between this data reading and subsequent one
-	 * in protocol specific functions during connection reset.
-	 * In case of reset we have to read next command and do
-	 * not expect data for old command to magically appear in
-	 * new connection.
-	 */
-	st->read_socket = st->socket;
-	err = dst_data_recv(st, cmd, sizeof(struct dst_cmd));
-	if (err)
-		goto out_exit;
-
-	dst_convert_cmd(cmd);
-
-	dprintk("%s: cmd: %u, size: %u, csize: %u, id: %llu, "
-			"sector: %llu, flags: %llx, rw: %llx.\n",
-			__func__, cmd->cmd, cmd->size,
-			cmd->csize, cmd->id, cmd->sector,
-			cmd->flags, cmd->rw);
-
-	/*
-	 * This should catch protocol breakage and random garbage
-	 * instead of commands.
-	 */
-	if (unlikely(cmd->csize > st->size - sizeof(struct dst_cmd))) {
-		err = -EBADMSG;
-		goto out_exit;
-	}
-
-	err = -EPROTO;
-	switch (cmd->cmd) {
-	case DST_IO_RESPONSE:
-		err = dst_process_io_response(st);
-		break;
-	case DST_IO:
-		err = dst_process_io(st);
-		break;
-	case DST_CFG:
-		err = dst_process_cfg(st);
-		break;
-	case DST_PING:
-		err = 0;
-		break;
-	default:
-		break;
-	}
-
-out_exit:
-	return err;
-}
-
-/*
- * Receiving thread. For the client node we should try to reconnect,
- * for accepted client we just drop the state and expect it to reconnect.
- */
-static int dst_recv(void *init_data, void *schedule_data)
-{
-	struct dst_state *st = schedule_data;
-	struct dst_node *n = init_data;
-	int err = 0;
-
-	dprintk("%s: start st: %p, n: %p, scan: %lu, need_exit: %d.\n",
-			__func__, st, n, n->trans_scan_timeout, st->need_exit);
-
-	while (n->trans_scan_timeout && !st->need_exit) {
-		err = dst_recv_processing(st);
-		if (err < 0) {
-			if (!st->ctl.type)
-				break;
-
-			if (!n->trans_scan_timeout || st->need_exit)
-				break;
-
-			dst_state_reset(st);
-			msleep(1000);
-		}
-	}
-
-	st->need_exit = 1;
-	wake_up(&st->thread_wait);
-
-	dprintk("%s: freeing receiving socket st: %p.\n", __func__, st);
-	dst_state_lock(st);
-	dst_state_exit_connected(st);
-	dst_state_unlock(st);
-	dst_state_put(st);
-
-	dprintk("%s: freed receiving socket st: %p.\n", __func__, st);
-
-	return err;
-}
-
-/*
- * Network state dies here and borns couple of lines below.
- * This object is the main network state processing engine:
- * sending, receiving, reconnections, all network related
- * tasks are handled on behalf of the state.
- */
-static void dst_state_free(struct dst_state *st)
-{
-	dprintk("%s: st: %p.\n", __func__, st);
-	if (st->cleanup)
-		st->cleanup(st);
-	kfree(st->data);
-	kfree(st);
-}
-
-struct dst_state *dst_state_alloc(struct dst_node *n)
-{
-	struct dst_state *st;
-	int err = -ENOMEM;
-
-	st = kzalloc(sizeof(struct dst_state), GFP_KERNEL);
-	if (!st)
-		goto err_out_exit;
-
-	st->node = n;
-	st->need_exit = 0;
-
-	st->size = PAGE_SIZE;
-	st->data = kmalloc(st->size, GFP_KERNEL);
-	if (!st->data)
-		goto err_out_free;
-
-	spin_lock_init(&st->request_lock);
-	INIT_LIST_HEAD(&st->request_list);
-
-	mutex_init(&st->state_lock);
-	init_waitqueue_head(&st->thread_wait);
-
-	/*
-	 * One for processing thread, another one for node itself.
-	 */
-	atomic_set(&st->refcnt, 2);
-
-	dprintk("%s: st: %p, n: %p.\n", __func__, st, st->node);
-
-	return st;
-
-err_out_free:
-	kfree(st);
-err_out_exit:
-	return ERR_PTR(err);
-}
-
-int dst_state_schedule_receiver(struct dst_state *st)
-{
-	return thread_pool_schedule_private(st->node->pool, dst_thread_setup,
-			dst_recv, st, MAX_SCHEDULE_TIMEOUT, st->node);
-}
-
-/*
- * Initialize client's connection to the remote peer: allocate state,
- * connect and perform block IO autoconfiguration.
- */
-int dst_node_init_connected(struct dst_node *n, struct dst_network_ctl *r)
-{
-	struct dst_state *st;
-	int err = -ENOMEM;
-
-	st = dst_state_alloc(n);
-	if (IS_ERR(st)) {
-		err = PTR_ERR(st);
-		goto err_out_exit;
-	}
-	memcpy(&st->ctl, r, sizeof(struct dst_network_ctl));
-
-	err = dst_state_init_connected(st);
-	if (err)
-		goto err_out_free_data;
-
-	err = dst_request_remote_config(st);
-	if (err)
-		goto err_out_exit_connected;
-	n->state = st;
-
-	err = dst_state_schedule_receiver(st);
-	if (err)
-		goto err_out_exit_connected;
-
-	return 0;
-
-err_out_exit_connected:
-	dst_state_exit_connected(st);
-err_out_free_data:
-	dst_state_free(st);
-err_out_exit:
-	n->state = NULL;
-	return err;
-}
-
-void dst_state_put(struct dst_state *st)
-{
-	dprintk("%s: st: %p, refcnt: %d.\n",
-			__func__, st, atomic_read(&st->refcnt));
-	if (atomic_dec_and_test(&st->refcnt))
-		dst_state_free(st);
-}
-
-/*
- * Send block IO to the network one by one using zero-copy ->sendpage().
- */
-int dst_send_bio(struct dst_state *st, struct dst_cmd *cmd, struct bio *bio)
-{
-	struct bio_vec *bv;
-	struct dst_crypto_ctl *c = &st->node->crypto;
-	int err, i = 0;
-	int flags = MSG_WAITALL;
-
-	err = dst_data_send_header(st->socket, cmd,
-		sizeof(struct dst_cmd) + c->crypto_attached_size, bio->bi_vcnt);
-	if (err)
-		goto err_out_exit;
-
-	bio_for_each_segment(bv, bio, i) {
-		if (i < bio->bi_vcnt - 1)
-			flags |= MSG_MORE;
-
-		err = kernel_sendpage(st->socket, bv->bv_page, bv->bv_offset,
-				bv->bv_len, flags);
-		if (err <= 0)
-			goto err_out_exit;
-	}
-
-	return 0;
-
-err_out_exit:
-	dprintk("%s: %d/%d, flags: %x, err: %d.\n",
-			__func__, i, bio->bi_vcnt, flags, err);
-	return err;
-}
-
-/*
- * Send transaction to the remote peer.
- */
-int dst_trans_send(struct dst_trans *t)
-{
-	int err;
-	struct dst_state *st = t->n->state;
-	struct bio *bio = t->bio;
-
-	dst_convert_cmd(&t->cmd);
-
-	dst_state_lock(st);
-	if (!st->socket) {
-		err = dst_state_init_connected(st);
-		if (err)
-			goto err_out_unlock;
-	}
-
-	if (bio_data_dir(bio) == WRITE) {
-		err = dst_send_bio(st, &t->cmd, t->bio);
-	} else {
-		err = dst_data_send_header(st->socket, &t->cmd,
-				sizeof(struct dst_cmd), 0);
-	}
-	if (err)
-		goto err_out_reset;
-
-	dst_state_unlock(st);
-	return 0;
-
-err_out_reset:
-	dst_state_reset_nolock(st);
-err_out_unlock:
-	dst_state_unlock(st);
-
-	return err;
-}
diff --git a/drivers/staging/dst/thread_pool.c b/drivers/staging/dst/thread_pool.c
deleted file mode 100644
index 29a82b2602f3..000000000000
--- a/drivers/staging/dst/thread_pool.c
+++ /dev/null
@@ -1,348 +0,0 @@
-/*
- * 2007+ Copyright (c) Evgeniy Polyakov <zbr@ioremap.net>
- * All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
-
-#include <linux/kernel.h>
-#include <linux/dst.h>
-#include <linux/kthread.h>
-#include <linux/slab.h>
-
-/*
- * Thread pool abstraction allows to schedule a work to be performed
- * on behalf of kernel thread. One does not operate with threads itself,
- * instead user provides setup and cleanup callbacks for thread pool itself,
- * and action and cleanup callbacks for each submitted work.
- *
- * Each worker has private data initialized at creation time and data,
- * provided by user at scheduling time.
- *
- * When action is being performed, thread can not be used by other users,
- * instead they will sleep until there is free thread to pick their work.
- */
-struct thread_pool_worker {
-	struct list_head	worker_entry;
-
-	struct task_struct	*thread;
-
-	struct thread_pool	*pool;
-
-	int			error;
-	int			has_data;
-	int			need_exit;
-	unsigned int		id;
-
-	wait_queue_head_t	wait;
-
-	void			*private;
-	void			*schedule_data;
-
-	int			(*action)(void *private, void *schedule_data);
-	void			(*cleanup)(void *private);
-};
-
-static void thread_pool_exit_worker(struct thread_pool_worker *w)
-{
-	kthread_stop(w->thread);
-
-	w->cleanup(w->private);
-	kfree(w);
-}
-
-/*
- * Called to mark thread as ready and allow users to schedule new work.
- */
-static void thread_pool_worker_make_ready(struct thread_pool_worker *w)
-{
-	struct thread_pool *p = w->pool;
-
-	mutex_lock(&p->thread_lock);
-
-	if (!w->need_exit) {
-		list_move_tail(&w->worker_entry, &p->ready_list);
-		w->has_data = 0;
-		mutex_unlock(&p->thread_lock);
-
-		wake_up(&p->wait);
-	} else {
-		p->thread_num--;
-		list_del(&w->worker_entry);
-		mutex_unlock(&p->thread_lock);
-
-		thread_pool_exit_worker(w);
-	}
-}
-
-/*
- * Thread action loop: waits until there is new work.
- */
-static int thread_pool_worker_func(void *data)
-{
-	struct thread_pool_worker *w = data;
-
-	while (!kthread_should_stop()) {
-		wait_event_interruptible(w->wait,
-			kthread_should_stop() || w->has_data);
-
-		if (kthread_should_stop())
-			break;
-
-		if (!w->has_data)
-			continue;
-
-		w->action(w->private, w->schedule_data);
-		thread_pool_worker_make_ready(w);
-	}
-
-	return 0;
-}
-
-/*
- * Remove single worker without specifying which one.
- */
-void thread_pool_del_worker(struct thread_pool *p)
-{
-	struct thread_pool_worker *w = NULL;
-
-	while (!w && p->thread_num) {
-		wait_event(p->wait, !list_empty(&p->ready_list) ||
-				!p->thread_num);
-
-		dprintk("%s: locking list_empty: %d, thread_num: %d.\n",
-				__func__, list_empty(&p->ready_list),
-				p->thread_num);
-
-		mutex_lock(&p->thread_lock);
-		if (!list_empty(&p->ready_list)) {
-			w = list_first_entry(&p->ready_list,
-					struct thread_pool_worker,
-					worker_entry);
-
-			dprintk("%s: deleting w: %p, thread_num: %d, "
-					"list: %p [%p.%p].\n", __func__,
-					w, p->thread_num, &p->ready_list,
-					p->ready_list.prev, p->ready_list.next);
-
-			p->thread_num--;
-			list_del(&w->worker_entry);
-		}
-		mutex_unlock(&p->thread_lock);
-	}
-
-	if (w)
-		thread_pool_exit_worker(w);
-	dprintk("%s: deleted w: %p, thread_num: %d.\n",
-			__func__, w, p->thread_num);
-}
-
-/*
- * Remove a worker with given ID.
- */
-void thread_pool_del_worker_id(struct thread_pool *p, unsigned int id)
-{
-	struct thread_pool_worker *w;
-	int found = 0;
-
-	mutex_lock(&p->thread_lock);
-	list_for_each_entry(w, &p->ready_list, worker_entry) {
-		if (w->id == id) {
-			found = 1;
-			p->thread_num--;
-			list_del(&w->worker_entry);
-			break;
-		}
-	}
-
-	if (!found) {
-		list_for_each_entry(w, &p->active_list, worker_entry) {
-			if (w->id == id) {
-				w->need_exit = 1;
-				break;
-			}
-		}
-	}
-	mutex_unlock(&p->thread_lock);
-
-	if (found)
-		thread_pool_exit_worker(w);
-}
-
-/*
- * Add new worker thread with given parameters.
- * If initialization callback fails, return error.
- */
-int thread_pool_add_worker(struct thread_pool *p,
-		char *name,
-		unsigned int id,
-		void *(*init)(void *private),
-		void (*cleanup)(void *private),
-		void *private)
-{
-	struct thread_pool_worker *w;
-	int err = -ENOMEM;
-
-	w = kzalloc(sizeof(struct thread_pool_worker), GFP_KERNEL);
-	if (!w)
-		goto err_out_exit;
-
-	w->pool = p;
-	init_waitqueue_head(&w->wait);
-	w->cleanup = cleanup;
-	w->id = id;
-
-	w->thread = kthread_run(thread_pool_worker_func, w, "%s", name);
-	if (IS_ERR(w->thread)) {
-		err = PTR_ERR(w->thread);
-		goto err_out_free;
-	}
-
-	w->private = init(private);
-	if (IS_ERR(w->private)) {
-		err = PTR_ERR(w->private);
-		goto err_out_stop_thread;
-	}
-
-	mutex_lock(&p->thread_lock);
-	list_add_tail(&w->worker_entry, &p->ready_list);
-	p->thread_num++;
-	mutex_unlock(&p->thread_lock);
-
-	return 0;
-
-err_out_stop_thread:
-	kthread_stop(w->thread);
-err_out_free:
-	kfree(w);
-err_out_exit:
-	return err;
-}
-
-/*
- * Destroy the whole pool.
- */
-void thread_pool_destroy(struct thread_pool *p)
-{
-	while (p->thread_num) {
-		dprintk("%s: num: %d.\n", __func__, p->thread_num);
-		thread_pool_del_worker(p);
-	}
-
-	kfree(p);
-}
-
-/*
- * Create a pool with given number of threads.
- * They will have sequential IDs started from zero.
- */
-struct thread_pool *thread_pool_create(int num, char *name,
-		void *(*init)(void *private),
-		void (*cleanup)(void *private),
-		void *private)
-{
-	struct thread_pool_worker *w, *tmp;
-	struct thread_pool *p;
-	int err = -ENOMEM;
-	int i;
-
-	p = kzalloc(sizeof(struct thread_pool), GFP_KERNEL);
-	if (!p)
-		goto err_out_exit;
-
-	init_waitqueue_head(&p->wait);
-	mutex_init(&p->thread_lock);
-	INIT_LIST_HEAD(&p->ready_list);
-	INIT_LIST_HEAD(&p->active_list);
-	p->thread_num = 0;
-
-	for (i = 0; i < num; ++i) {
-		err = thread_pool_add_worker(p, name, i, init,
-				cleanup, private);
-		if (err)
-			goto err_out_free_all;
-	}
-
-	return p;
-
-err_out_free_all:
-	list_for_each_entry_safe(w, tmp, &p->ready_list, worker_entry) {
-		list_del(&w->worker_entry);
-		thread_pool_exit_worker(w);
-	}
-	kfree(p);
-err_out_exit:
-	return ERR_PTR(err);
-}
-
-/*
- * Schedule execution of the action on a given thread,
- * provided ID pointer has to match previously stored
- * private data.
- */
-int thread_pool_schedule_private(struct thread_pool *p,
-		int (*setup)(void *private, void *data),
-		int (*action)(void *private, void *data),
-		void *data, long timeout, void *id)
-{
-	struct thread_pool_worker *w, *tmp, *worker = NULL;
-	int err = 0;
-
-	while (!worker && !err) {
-		timeout = wait_event_interruptible_timeout(p->wait,
-				!list_empty(&p->ready_list),
-				timeout);
-
-		if (!timeout) {
-			err = -ETIMEDOUT;
-			break;
-		}
-
-		worker = NULL;
-		mutex_lock(&p->thread_lock);
-		list_for_each_entry_safe(w, tmp, &p->ready_list, worker_entry) {
-			if (id && id != w->private)
-				continue;
-
-			worker = w;
-
-			list_move_tail(&w->worker_entry, &p->active_list);
-
-			err = setup(w->private, data);
-			if (!err) {
-				w->schedule_data = data;
-				w->action = action;
-				w->has_data = 1;
-				wake_up(&w->wait);
-			} else {
-				list_move_tail(&w->worker_entry,
-						&p->ready_list);
-			}
-
-			break;
-		}
-		mutex_unlock(&p->thread_lock);
-	}
-
-	return err;
-}
-
-/*
- * Schedule execution on arbitrary thread from the pool.
- */
-int thread_pool_schedule(struct thread_pool *p,
-		int (*setup)(void *private, void *data),
-		int (*action)(void *private, void *data),
-		void *data, long timeout)
-{
-	return thread_pool_schedule_private(p, setup,
-			action, data, timeout, NULL);
-}
diff --git a/drivers/staging/dst/trans.c b/drivers/staging/dst/trans.c
deleted file mode 100644
index 1c36a6bc31d5..000000000000
--- a/drivers/staging/dst/trans.c
+++ /dev/null
@@ -1,337 +0,0 @@
-/*
- * 2007+ Copyright (c) Evgeniy Polyakov <zbr@ioremap.net>
- * All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
-
-#include <linux/bio.h>
-#include <linux/dst.h>
-#include <linux/slab.h>
-#include <linux/mempool.h>
-
-/*
- * Transaction memory pool size.
- */
-static int dst_mempool_num = 32;
-module_param(dst_mempool_num, int, 0644);
-
-/*
- * Transaction tree management.
- */
-static inline int dst_trans_cmp(dst_gen_t gen, dst_gen_t new)
-{
-	if (gen < new)
-		return 1;
-	if (gen > new)
-		return -1;
-	return 0;
-}
-
-struct dst_trans *dst_trans_search(struct dst_node *node, dst_gen_t gen)
-{
-	struct rb_root *root = &node->trans_root;
-	struct rb_node *n = root->rb_node;
-	struct dst_trans *t, *ret = NULL;
-	int cmp;
-
-	while (n) {
-		t = rb_entry(n, struct dst_trans, trans_entry);
-
-		cmp = dst_trans_cmp(t->gen, gen);
-		if (cmp < 0)
-			n = n->rb_left;
-		else if (cmp > 0)
-			n = n->rb_right;
-		else {
-			ret = t;
-			break;
-		}
-	}
-
-	dprintk("%s: %s transaction: id: %llu.\n", __func__,
-			(ret) ? "found" : "not found", gen);
-
-	return ret;
-}
-
-static int dst_trans_insert(struct dst_trans *new)
-{
-	struct rb_root *root = &new->n->trans_root;
-	struct rb_node **n = &root->rb_node, *parent = NULL;
-	struct dst_trans *ret = NULL, *t;
-	int cmp;
-
-	while (*n) {
-		parent = *n;
-
-		t = rb_entry(parent, struct dst_trans, trans_entry);
-
-		cmp = dst_trans_cmp(t->gen, new->gen);
-		if (cmp < 0)
-			n = &parent->rb_left;
-		else if (cmp > 0)
-			n = &parent->rb_right;
-		else {
-			ret = t;
-			break;
-		}
-	}
-
-	new->send_time = jiffies;
-	if (ret) {
-		printk(KERN_DEBUG "%s: exist: old: gen: %llu, bio: %llu/%u, "
-			"send_time: %lu, new: gen: %llu, bio: %llu/%u, "
-			"send_time: %lu.\n", __func__,
-			ret->gen, (u64)ret->bio->bi_sector,
-			ret->bio->bi_size, ret->send_time,
-			new->gen, (u64)new->bio->bi_sector,
-			new->bio->bi_size, new->send_time);
-		return -EEXIST;
-	}
-
-	rb_link_node(&new->trans_entry, parent, n);
-	rb_insert_color(&new->trans_entry, root);
-
-	dprintk("%s: inserted: gen: %llu, bio: %llu/%u, send_time: %lu.\n",
-		__func__, new->gen, (u64)new->bio->bi_sector,
-		new->bio->bi_size, new->send_time);
-
-	return 0;
-}
-
-int dst_trans_remove_nolock(struct dst_trans *t)
-{
-	struct dst_node *n = t->n;
-
-	if (t->trans_entry.rb_parent_color) {
-		rb_erase(&t->trans_entry, &n->trans_root);
-		t->trans_entry.rb_parent_color = 0;
-	}
-	return 0;
-}
-
-int dst_trans_remove(struct dst_trans *t)
-{
-	int ret;
-	struct dst_node *n = t->n;
-
-	mutex_lock(&n->trans_lock);
-	ret = dst_trans_remove_nolock(t);
-	mutex_unlock(&n->trans_lock);
-
-	return ret;
-}
-
-/*
- * When transaction is completed and there are no more users,
- * we complete appriate block IO request with given error status.
- */
-void dst_trans_put(struct dst_trans *t)
-{
-	if (atomic_dec_and_test(&t->refcnt)) {
-		struct bio *bio = t->bio;
-
-		dprintk("%s: completed t: %p, gen: %llu, bio: %p.\n",
-				__func__, t, t->gen, bio);
-
-		bio_endio(bio, t->error);
-		bio_put(bio);
-
-		dst_node_put(t->n);
-		mempool_free(t, t->n->trans_pool);
-	}
-}
-
-/*
- * Process given block IO request: allocate transaction, insert it into the tree
- * and send/schedule crypto processing.
- */
-int dst_process_bio(struct dst_node *n, struct bio *bio)
-{
-	struct dst_trans *t;
-	int err = -ENOMEM;
-
-	t = mempool_alloc(n->trans_pool, GFP_NOFS);
-	if (!t)
-		goto err_out_exit;
-
-	t->n = dst_node_get(n);
-	t->bio = bio;
-	t->error = 0;
-	t->retries = 0;
-	atomic_set(&t->refcnt, 1);
-	t->gen = atomic_long_inc_return(&n->gen);
-
-	t->enc = bio_data_dir(bio);
-	dst_bio_to_cmd(bio, &t->cmd, DST_IO, t->gen);
-
-	mutex_lock(&n->trans_lock);
-	err = dst_trans_insert(t);
-	mutex_unlock(&n->trans_lock);
-	if (err)
-		goto err_out_free;
-
-	dprintk("%s: gen: %llu, bio: %llu/%u, dir/enc: %d, need_crypto: %d.\n",
-			__func__, t->gen, (u64)bio->bi_sector,
-			bio->bi_size, t->enc, dst_need_crypto(n));
-
-	if (dst_need_crypto(n) && t->enc)
-		dst_trans_crypto(t);
-	else
-		dst_trans_send(t);
-
-	return 0;
-
-err_out_free:
-	dst_node_put(n);
-	mempool_free(t, n->trans_pool);
-err_out_exit:
-	bio_endio(bio, err);
-	bio_put(bio);
-	return err;
-}
-
-/*
- * Scan for timeout/stale transactions.
- * Each transaction is being resent multiple times before error completion.
- */
-static void dst_trans_scan(struct work_struct *work)
-{
-	struct dst_node *n = container_of(work, struct dst_node,
-			trans_work.work);
-	struct rb_node *rb_node;
-	struct dst_trans *t;
-	unsigned long timeout = n->trans_scan_timeout;
-	int num = 10 * n->trans_max_retries;
-
-	mutex_lock(&n->trans_lock);
-
-	for (rb_node = rb_first(&n->trans_root); rb_node; ) {
-		t = rb_entry(rb_node, struct dst_trans, trans_entry);
-
-		if (timeout && time_after(t->send_time + timeout, jiffies)
-				&& t->retries == 0)
-			break;
-#if 0
-		dprintk("%s: t: %p, gen: %llu, n: %s, retries: %u, max: %u.\n",
-			__func__, t, t->gen, n->name,
-			t->retries, n->trans_max_retries);
-#endif
-		if (--num == 0)
-			break;
-
-		dst_trans_get(t);
-
-		rb_node = rb_next(rb_node);
-
-		if (timeout && (++t->retries < n->trans_max_retries)) {
-			dst_trans_send(t);
-		} else {
-			t->error = -ETIMEDOUT;
-			dst_trans_remove_nolock(t);
-			dst_trans_put(t);
-		}
-
-		dst_trans_put(t);
-	}
-
-	mutex_unlock(&n->trans_lock);
-
-	/*
-	 * If no timeout specified then system is in the middle of exiting
-	 * process, so no need to reschedule scanning process again.
-	 */
-	if (timeout) {
-		if (!num)
-			timeout = HZ;
-		schedule_delayed_work(&n->trans_work, timeout);
-	}
-}
-
-/*
- * Flush all transactions and mark them as timed out.
- * Destroy transaction pools.
- */
-void dst_node_trans_exit(struct dst_node *n)
-{
-	struct dst_trans *t;
-	struct rb_node *rb_node;
-
-	if (!n->trans_cache)
-		return;
-
-	dprintk("%s: n: %p, cancelling the work.\n", __func__, n);
-	cancel_delayed_work_sync(&n->trans_work);
-	flush_scheduled_work();
-	dprintk("%s: n: %p, work has been cancelled.\n", __func__, n);
-
-	for (rb_node = rb_first(&n->trans_root); rb_node; ) {
-		t = rb_entry(rb_node, struct dst_trans, trans_entry);
-
-		dprintk("%s: t: %p, gen: %llu, n: %s.\n",
-			__func__, t, t->gen, n->name);
-
-		rb_node = rb_next(rb_node);
-
-		t->error = -ETIMEDOUT;
-		dst_trans_remove_nolock(t);
-		dst_trans_put(t);
-	}
-
-	mempool_destroy(n->trans_pool);
-	kmem_cache_destroy(n->trans_cache);
-}
-
-/*
- * Initialize transaction storage for given node.
- * Transaction stores not only control information,
- * but also network command and crypto data (if needed)
- * to reduce number of allocations. Thus transaction size
- * differs from node to node.
- */
-int dst_node_trans_init(struct dst_node *n, unsigned int size)
-{
-	/*
-	 * We need this, since node with given name can be dropped from the
-	 * hash table, but be still alive, so subsequent creation of the node
-	 * with the same name may collide with existing cache name.
-	 */
-
-	snprintf(n->cache_name, sizeof(n->cache_name), "%s-%p", n->name, n);
-
-	n->trans_cache = kmem_cache_create(n->cache_name,
-			size + n->crypto.crypto_attached_size,
-			0, 0, NULL);
-	if (!n->trans_cache)
-		goto err_out_exit;
-
-	n->trans_pool = mempool_create_slab_pool(dst_mempool_num,
-			n->trans_cache);
-	if (!n->trans_pool)
-		goto err_out_cache_destroy;
-
-	mutex_init(&n->trans_lock);
-	n->trans_root = RB_ROOT;
-
-	INIT_DELAYED_WORK(&n->trans_work, dst_trans_scan);
-	schedule_delayed_work(&n->trans_work, n->trans_scan_timeout);
-
-	dprintk("%s: n: %p, size: %u, crypto: %u.\n",
-		__func__, n, size, n->crypto.crypto_attached_size);
-
-	return 0;
-
-err_out_cache_destroy:
-	kmem_cache_destroy(n->trans_cache);
-err_out_exit:
-	return -ENOMEM;
-}
diff --git a/drivers/staging/panel/Kconfig b/drivers/staging/panel/Kconfig
index 3abe7c9d558d..3defa0133f2e 100644
--- a/drivers/staging/panel/Kconfig
+++ b/drivers/staging/panel/Kconfig
@@ -47,7 +47,7 @@ config PANEL_PROFILE
 config PANEL_KEYPAD
 	depends on PANEL && PANEL_PROFILE="0"
 	int "Keypad type (0=none, 1=old 6 keys, 2=new 6 keys, 3=Nexcom 4 keys)"
-	range 0 4
+	range 0 3
 	default 0
 	---help---
 	  This enables and configures a keypad connected to the parallel port.
diff --git a/drivers/staging/panel/panel.c b/drivers/staging/panel/panel.c
index f98a52448eae..95c93e82ccec 100644
--- a/drivers/staging/panel/panel.c
+++ b/drivers/staging/panel/panel.c
@@ -378,7 +378,7 @@ static unsigned char lcd_bits[LCD_PORTS][LCD_BITS][BIT_STATES];
 
 #ifdef CONFIG_PANEL_LCD_CHARSET
 #undef DEFAULT_LCD_CHARSET
-#define DEFAULT_LCD_CHARSET
+#define DEFAULT_LCD_CHARSET CONFIG_PANEL_LCD_CHARSET
 #endif
 
 #endif /* DEFAULT_PROFILE == 0 */
diff --git a/drivers/staging/ramzswap/TODO b/drivers/staging/ramzswap/TODO
index bac40d6cb9f1..8d64e28fac0e 100644
--- a/drivers/staging/ramzswap/TODO
+++ b/drivers/staging/ramzswap/TODO
@@ -1,6 +1,5 @@
 TODO:
 	- Add support for swap notifiers
-	- Remove CONFIG_ARM hack
 
 Please send patches to Greg Kroah-Hartman <greg@kroah.com> and
 Nitin Gupta <ngupta@vflare.org>
diff --git a/drivers/staging/ramzswap/ramzswap_drv.c b/drivers/staging/ramzswap/ramzswap_drv.c
index b839f05efbce..989fac5b01b3 100644
--- a/drivers/staging/ramzswap/ramzswap_drv.c
+++ b/drivers/staging/ramzswap/ramzswap_drv.c
@@ -222,28 +222,6 @@ out:
 	return ret;
 }
 
-static void ramzswap_flush_dcache_page(struct page *page)
-{
-#ifdef CONFIG_ARM
-	int flag = 0;
-	/*
-	 * Ugly hack to get flush_dcache_page() work on ARM.
-	 * page_mapping(page) == NULL after clearing this swap cache flag.
-	 * Without clearing this flag, flush_dcache_page() will simply set
-	 * "PG_dcache_dirty" bit and return.
-	 */
-	if (PageSwapCache(page)) {
-		flag = 1;
-		ClearPageSwapCache(page);
-	}
-#endif
-	flush_dcache_page(page);
-#ifdef CONFIG_ARM
-	if (flag)
-		SetPageSwapCache(page);
-#endif
-}
-
 void ramzswap_ioctl_get_stats(struct ramzswap *rzs,
 			struct ramzswap_ioctl_stats *s)
 {
@@ -655,7 +633,7 @@ static int handle_zero_page(struct bio *bio)
 	memset(user_mem, 0, PAGE_SIZE);
 	kunmap_atomic(user_mem, KM_USER0);
 
-	ramzswap_flush_dcache_page(page);
+	flush_dcache_page(page);
 
 	set_bit(BIO_UPTODATE, &bio->bi_flags);
 	bio_endio(bio, 0);
@@ -679,7 +657,7 @@ static int handle_uncompressed_page(struct ramzswap *rzs, struct bio *bio)
 	kunmap_atomic(user_mem, KM_USER0);
 	kunmap_atomic(cmem, KM_USER1);
 
-	ramzswap_flush_dcache_page(page);
+	flush_dcache_page(page);
 
 	set_bit(BIO_UPTODATE, &bio->bi_flags);
 	bio_endio(bio, 0);
@@ -779,7 +757,7 @@ static int ramzswap_read(struct ramzswap *rzs, struct bio *bio)
 		goto out;
 	}
 
-	ramzswap_flush_dcache_page(page);
+	flush_dcache_page(page);
 
 	set_bit(BIO_UPTODATE, &bio->bi_flags);
 	bio_endio(bio, 0);
diff --git a/drivers/staging/rtl8187se/ieee80211/ieee80211.h b/drivers/staging/rtl8187se/ieee80211/ieee80211.h
index 3222c22152fb..0d490c164db6 100644
--- a/drivers/staging/rtl8187se/ieee80211/ieee80211.h
+++ b/drivers/staging/rtl8187se/ieee80211/ieee80211.h
@@ -1318,13 +1318,13 @@ extern int ieee80211_encrypt_fragment(
 	struct sk_buff *frag,
 	int hdr_len);
 
-extern int ieee80211_xmit(struct sk_buff *skb,
+extern int ieee80211_rtl_xmit(struct sk_buff *skb,
 			  struct net_device *dev);
 extern void ieee80211_txb_free(struct ieee80211_txb *);
 
 
 /* ieee80211_rx.c */
-extern int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
+extern int ieee80211_rtl_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
 			struct ieee80211_rx_stats *rx_stats);
 extern void ieee80211_rx_mgt(struct ieee80211_device *ieee,
 			     struct ieee80211_hdr_4addr *header,
@@ -1376,8 +1376,8 @@ extern void ieee80211_stop_protocol(struct ieee80211_device *ieee);
 extern void ieee80211_softmac_start_protocol(struct ieee80211_device *ieee);
 extern void ieee80211_softmac_stop_protocol(struct ieee80211_device *ieee);
 extern void ieee80211_reset_queue(struct ieee80211_device *ieee);
-extern void ieee80211_wake_queue(struct ieee80211_device *ieee);
-extern void ieee80211_stop_queue(struct ieee80211_device *ieee);
+extern void ieee80211_rtl_wake_queue(struct ieee80211_device *ieee);
+extern void ieee80211_rtl_stop_queue(struct ieee80211_device *ieee);
 extern struct sk_buff *ieee80211_get_beacon(struct ieee80211_device *ieee);
 extern void ieee80211_start_send_beacons(struct ieee80211_device *ieee);
 extern void ieee80211_stop_send_beacons(struct ieee80211_device *ieee);
@@ -1385,7 +1385,7 @@ extern int ieee80211_wpa_supplicant_ioctl(struct ieee80211_device *ieee, struct
 extern void notify_wx_assoc_event(struct ieee80211_device *ieee);
 extern void ieee80211_ps_tx_ack(struct ieee80211_device *ieee, short success);
 extern void SendDisassociation(struct ieee80211_device *ieee,u8* asSta,u8 asRsn);
-extern void ieee80211_start_scan(struct ieee80211_device *ieee);
+extern void ieee80211_rtl_start_scan(struct ieee80211_device *ieee);
 
 //Add for RF power on power off by lizhaoming 080512
 extern void SendDisassociation(struct ieee80211_device *ieee,
diff --git a/drivers/staging/rtl8187se/ieee80211/ieee80211_rx.c b/drivers/staging/rtl8187se/ieee80211/ieee80211_rx.c
index f882dd8cf9b5..9128c181bc7d 100644
--- a/drivers/staging/rtl8187se/ieee80211/ieee80211_rx.c
+++ b/drivers/staging/rtl8187se/ieee80211/ieee80211_rx.c
@@ -469,7 +469,7 @@ drop:
 /* All received frames are sent to this function. @skb contains the frame in
  * IEEE 802.11 format, i.e., in the format it was sent over air.
  * This function is called only as a tasklet (software IRQ). */
-int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
+int ieee80211_rtl_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
 		 struct ieee80211_rx_stats *rx_stats)
 {
 	struct net_device *dev = ieee->dev;
diff --git a/drivers/staging/rtl8187se/ieee80211/ieee80211_softmac.c b/drivers/staging/rtl8187se/ieee80211/ieee80211_softmac.c
index 1fe19c39d702..c7c645af0ebb 100644
--- a/drivers/staging/rtl8187se/ieee80211/ieee80211_softmac.c
+++ b/drivers/staging/rtl8187se/ieee80211/ieee80211_softmac.c
@@ -689,7 +689,7 @@ void ieee80211_stop_scan(struct ieee80211_device *ieee)
 }
 
 /* called with ieee->lock held */
-void ieee80211_start_scan(struct ieee80211_device *ieee)
+void ieee80211_rtl_start_scan(struct ieee80211_device *ieee)
 {
 	if(IS_DOT11D_ENABLE(ieee) )
 	{
@@ -1196,7 +1196,7 @@ void ieee80211_associate_step1(struct ieee80211_device *ieee)
 	}
 }
 
-void ieee80211_auth_challenge(struct ieee80211_device *ieee, u8 *challenge, int chlen)
+void ieee80211_rtl_auth_challenge(struct ieee80211_device *ieee, u8 *challenge, int chlen)
 {
 	u8 *c;
 	struct sk_buff *skb;
@@ -1898,7 +1898,7 @@ associate_complete:
 
 								ieee80211_associate_step2(ieee);
 							}else{
-								ieee80211_auth_challenge(ieee, challenge, chlen);
+								ieee80211_rtl_auth_challenge(ieee, challenge, chlen);
 							}
 						}else{
 							ieee->softmac_stats.rx_auth_rs_err++;
@@ -2047,7 +2047,7 @@ void ieee80211_reset_queue(struct ieee80211_device *ieee)
 
 }
 
-void ieee80211_wake_queue(struct ieee80211_device *ieee)
+void ieee80211_rtl_wake_queue(struct ieee80211_device *ieee)
 {
 
 	unsigned long flags;
@@ -2089,7 +2089,7 @@ exit :
 }
 
 
-void ieee80211_stop_queue(struct ieee80211_device *ieee)
+void ieee80211_rtl_stop_queue(struct ieee80211_device *ieee)
 {
 	//unsigned long flags;
 	//spin_lock_irqsave(&ieee->lock,flags);
@@ -2301,7 +2301,7 @@ void ieee80211_start_bss(struct ieee80211_device *ieee)
 //#else
 	if (ieee->state == IEEE80211_NOLINK){
 		ieee->actscanning = true;
-		ieee80211_start_scan(ieee);
+		ieee80211_rtl_start_scan(ieee);
 	}
 //#endif
 	spin_unlock_irqrestore(&ieee->lock, flags);
@@ -2357,7 +2357,7 @@ void ieee80211_associate_retry_wq(struct work_struct *work)
 	if(ieee->state == IEEE80211_NOLINK){
 		ieee->beinretry = false;
 		ieee->actscanning = true;
-		ieee80211_start_scan(ieee);
+		ieee80211_rtl_start_scan(ieee);
 	}
 	//YJ,add,080828, notify os here
 	if(ieee->state == IEEE80211_NOLINK)
diff --git a/drivers/staging/rtl8187se/ieee80211/ieee80211_tx.c b/drivers/staging/rtl8187se/ieee80211/ieee80211_tx.c
index dde1f2e0cf32..69bd02164b0c 100644
--- a/drivers/staging/rtl8187se/ieee80211/ieee80211_tx.c
+++ b/drivers/staging/rtl8187se/ieee80211/ieee80211_tx.c
@@ -304,7 +304,7 @@ ieee80211_classify(struct sk_buff *skb, struct ieee80211_network *network)
 }
 
 /* SKBs are added to the ieee->tx_queue. */
-int ieee80211_xmit(struct sk_buff *skb,
+int ieee80211_rtl_xmit(struct sk_buff *skb,
 		   struct net_device *dev)
 {
 	struct ieee80211_device *ieee = netdev_priv(dev);
diff --git a/drivers/staging/rtl8187se/r8180_core.c b/drivers/staging/rtl8187se/r8180_core.c
index 57c62b0a402f..e0f13efdb15a 100644
--- a/drivers/staging/rtl8187se/r8180_core.c
+++ b/drivers/staging/rtl8187se/r8180_core.c
@@ -1811,7 +1811,7 @@ void rtl8180_rx(struct net_device *dev)
 			if(priv->rx_skb->len > 4)
 				skb_trim(priv->rx_skb,priv->rx_skb->len-4);
 #ifndef RX_DONT_PASS_UL
-			if(!ieee80211_rx(priv->ieee80211,
+			if(!ieee80211_rtl_rx(priv->ieee80211,
 					 priv->rx_skb, &stats)){
 #endif // RX_DONT_PASS_UL
 
@@ -1917,11 +1917,11 @@ rate)
 	if (!check_nic_enought_desc(dev, priority)){
 		DMESGW("Error: no descriptor left by previous TX (avail %d) ",
 			get_curr_tx_free_desc(dev, priority));
-		ieee80211_stop_queue(priv->ieee80211);
+		ieee80211_rtl_stop_queue(priv->ieee80211);
 	}
 	rtl8180_tx(dev, skb->data, skb->len, priority, morefrag,0,rate);
 	if (!check_nic_enought_desc(dev, priority))
-		ieee80211_stop_queue(priv->ieee80211);
+		ieee80211_rtl_stop_queue(priv->ieee80211);
 
 	spin_unlock_irqrestore(&priv->tx_lock,flags);
 }
@@ -3680,7 +3680,7 @@ static const struct net_device_ops rtl8180_netdev_ops = {
 	.ndo_set_mac_address	= r8180_set_mac_adr,
 	.ndo_validate_addr	= eth_validate_addr,
 	.ndo_change_mtu		= eth_change_mtu,
-	.ndo_start_xmit		= ieee80211_xmit,
+	.ndo_start_xmit		= ieee80211_rtl_xmit,
 };
 
 static int __devinit rtl8180_pci_probe(struct pci_dev *pdev,
@@ -3900,7 +3900,7 @@ void rtl8180_try_wake_queue(struct net_device *dev, int pri)
 	spin_unlock_irqrestore(&priv->tx_lock,flags);
 
 	if(enough_desc)
-		ieee80211_wake_queue(priv->ieee80211);
+		ieee80211_rtl_wake_queue(priv->ieee80211);
 }
 
 void rtl8180_tx_isr(struct net_device *dev, int pri,short error)
diff --git a/drivers/staging/rtl8187se/r8180_wx.c b/drivers/staging/rtl8187se/r8180_wx.c
index 536cb6e8e796..124cde356cbc 100644
--- a/drivers/staging/rtl8187se/r8180_wx.c
+++ b/drivers/staging/rtl8187se/r8180_wx.c
@@ -377,7 +377,7 @@ static int r8180_wx_set_scan(struct net_device *dev, struct iw_request_info *a,
 	//	queue_work(priv->ieee80211->wq, &priv->ieee80211->wx_sync_scan_wq);
 		//printk("start scan============================>\n");
 		ieee80211_softmac_ips_scan_syncro(priv->ieee80211);
-//ieee80211_start_scan(priv->ieee80211);
+//ieee80211_rtl_start_scan(priv->ieee80211);
 		/* intentionally forget to up sem */
 //			up(&priv->ieee80211->wx_sem);
 			ret = 0;
diff --git a/drivers/staging/rtl8192e/ieee80211.h b/drivers/staging/rtl8192e/ieee80211.h
index 97137ddefff4..3ba9e9e90bda 100644
--- a/drivers/staging/rtl8192e/ieee80211.h
+++ b/drivers/staging/rtl8192e/ieee80211.h
@@ -303,8 +303,8 @@ enum	_ReasonCode{
 #define ieee80211_rx_mgt		ieee80211_rx_mgt_rsl
 
 #define ieee80211_get_beacon		ieee80211_get_beacon_rsl
-#define ieee80211_wake_queue		ieee80211_wake_queue_rsl
-#define ieee80211_stop_queue		ieee80211_stop_queue_rsl
+#define ieee80211_rtl_wake_queue		ieee80211_rtl_wake_queue_rsl
+#define ieee80211_rtl_stop_queue		ieee80211_rtl_stop_queue_rsl
 #define ieee80211_reset_queue		ieee80211_reset_queue_rsl
 #define ieee80211_softmac_stop_protocol	ieee80211_softmac_stop_protocol_rsl
 #define ieee80211_softmac_start_protocol ieee80211_softmac_start_protocol_rsl
@@ -2435,13 +2435,13 @@ extern int ieee80211_encrypt_fragment(
 	struct sk_buff *frag,
 	int hdr_len);
 
-extern int ieee80211_xmit(struct sk_buff *skb,
+extern int ieee80211_rtl_xmit(struct sk_buff *skb,
 			  struct net_device *dev);
 extern void ieee80211_txb_free(struct ieee80211_txb *);
 
 
 /* ieee80211_rx.c */
-extern int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
+extern int ieee80211_rtl_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
 			struct ieee80211_rx_stats *rx_stats);
 extern void ieee80211_rx_mgt(struct ieee80211_device *ieee,
 			     struct ieee80211_hdr_4addr *header,
@@ -2502,8 +2502,8 @@ extern void ieee80211_stop_protocol(struct ieee80211_device *ieee);
 extern void ieee80211_softmac_start_protocol(struct ieee80211_device *ieee);
 extern void ieee80211_softmac_stop_protocol(struct ieee80211_device *ieee);
 extern void ieee80211_reset_queue(struct ieee80211_device *ieee);
-extern void ieee80211_wake_queue(struct ieee80211_device *ieee);
-extern void ieee80211_stop_queue(struct ieee80211_device *ieee);
+extern void ieee80211_rtl_wake_queue(struct ieee80211_device *ieee);
+extern void ieee80211_rtl_stop_queue(struct ieee80211_device *ieee);
 extern struct sk_buff *ieee80211_get_beacon(struct ieee80211_device *ieee);
 extern void ieee80211_start_send_beacons(struct ieee80211_device *ieee);
 extern void ieee80211_stop_send_beacons(struct ieee80211_device *ieee);
diff --git a/drivers/staging/rtl8192e/ieee80211/ieee80211.h b/drivers/staging/rtl8192e/ieee80211/ieee80211.h
index 83c8452de378..aa76390487bb 100644
--- a/drivers/staging/rtl8192e/ieee80211/ieee80211.h
+++ b/drivers/staging/rtl8192e/ieee80211/ieee80211.h
@@ -333,8 +333,8 @@ enum	_ReasonCode{
 #define ieee80211_rx_mgt		ieee80211_rx_mgt_rsl
 
 #define ieee80211_get_beacon		ieee80211_get_beacon_rsl
-#define ieee80211_wake_queue		ieee80211_wake_queue_rsl
-#define ieee80211_stop_queue		ieee80211_stop_queue_rsl
+#define ieee80211_rtl_wake_queue		ieee80211_rtl_wake_queue_rsl
+#define ieee80211_rtl_stop_queue		ieee80211_rtl_stop_queue_rsl
 #define ieee80211_reset_queue		ieee80211_reset_queue_rsl
 #define ieee80211_softmac_stop_protocol	ieee80211_softmac_stop_protocol_rsl
 #define ieee80211_softmac_start_protocol ieee80211_softmac_start_protocol_rsl
@@ -2546,13 +2546,13 @@ extern int ieee80211_encrypt_fragment(
 	struct sk_buff *frag,
 	int hdr_len);
 
-extern int ieee80211_xmit(struct sk_buff *skb,
+extern int ieee80211_rtl_xmit(struct sk_buff *skb,
 			  struct net_device *dev);
 extern void ieee80211_txb_free(struct ieee80211_txb *);
 
 
 /* ieee80211_rx.c */
-extern int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
+extern int ieee80211_rtl_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
 			struct ieee80211_rx_stats *rx_stats);
 extern void ieee80211_rx_mgt(struct ieee80211_device *ieee,
 			     struct ieee80211_hdr_4addr *header,
@@ -2613,8 +2613,8 @@ extern void ieee80211_stop_protocol(struct ieee80211_device *ieee);
 extern void ieee80211_softmac_start_protocol(struct ieee80211_device *ieee);
 extern void ieee80211_softmac_stop_protocol(struct ieee80211_device *ieee);
 extern void ieee80211_reset_queue(struct ieee80211_device *ieee);
-extern void ieee80211_wake_queue(struct ieee80211_device *ieee);
-extern void ieee80211_stop_queue(struct ieee80211_device *ieee);
+extern void ieee80211_rtl_wake_queue(struct ieee80211_device *ieee);
+extern void ieee80211_rtl_stop_queue(struct ieee80211_device *ieee);
 extern struct sk_buff *ieee80211_get_beacon(struct ieee80211_device *ieee);
 extern void ieee80211_start_send_beacons(struct ieee80211_device *ieee);
 extern void ieee80211_stop_send_beacons(struct ieee80211_device *ieee);
diff --git a/drivers/staging/rtl8192e/ieee80211/ieee80211_module.c b/drivers/staging/rtl8192e/ieee80211/ieee80211_module.c
index 2644155737a8..f43a7db5c78b 100644
--- a/drivers/staging/rtl8192e/ieee80211/ieee80211_module.c
+++ b/drivers/staging/rtl8192e/ieee80211/ieee80211_module.c
@@ -119,7 +119,7 @@ struct net_device *alloc_ieee80211(int sizeof_priv)
 	ieee = (struct ieee80211_device *)dev->priv;
 #endif
 #if 0
-	dev->hard_start_xmit = ieee80211_xmit;
+	dev->hard_start_xmit = ieee80211_rtl_xmit;
 #endif
 
 	memset(ieee, 0, sizeof(struct ieee80211_device)+sizeof_priv);
@@ -333,7 +333,7 @@ extern void ieee80211_crypto_ccmp_exit(void);
 extern int ieee80211_crypto_wep_init(void);
 extern void ieee80211_crypto_wep_exit(void);
 
-int __init ieee80211_init(void)
+int __init ieee80211_rtl_init(void)
 {
 	struct proc_dir_entry *e;
 	int retval;
@@ -389,7 +389,7 @@ int __init ieee80211_init(void)
 	return 0;
 }
 
-void __exit ieee80211_exit(void)
+void __exit ieee80211_rtl_exit(void)
 {
 	if (ieee80211_proc) {
 		remove_proc_entry("debug_level", ieee80211_proc);
@@ -412,8 +412,8 @@ module_param(debug, int, 0444);
 MODULE_PARM_DESC(debug, "debug output mask");
 
 
-//module_exit(ieee80211_exit);
-//module_init(ieee80211_init);
+//module_exit(ieee80211_rtl_exit);
+//module_init(ieee80211_rtl_init);
 #endif
 #endif
 
diff --git a/drivers/staging/rtl8192e/ieee80211/ieee80211_rx.c b/drivers/staging/rtl8192e/ieee80211/ieee80211_rx.c
index 5dc478b86375..06d91715143c 100644
--- a/drivers/staging/rtl8192e/ieee80211/ieee80211_rx.c
+++ b/drivers/staging/rtl8192e/ieee80211/ieee80211_rx.c
@@ -923,7 +923,7 @@ u8 parse_subframe(struct sk_buff *skb,
 /* All received frames are sent to this function. @skb contains the frame in
  * IEEE 802.11 format, i.e., in the format it was sent over air.
  * This function is called only as a tasklet (software IRQ). */
-int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
+int ieee80211_rtl_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
 		 struct ieee80211_rx_stats *rx_stats)
 {
 	struct net_device *dev = ieee->dev;
diff --git a/drivers/staging/rtl8192e/ieee80211/ieee80211_softmac.c b/drivers/staging/rtl8192e/ieee80211/ieee80211_softmac.c
index 593d22825184..6d1ddec39f0e 100644
--- a/drivers/staging/rtl8192e/ieee80211/ieee80211_softmac.c
+++ b/drivers/staging/rtl8192e/ieee80211/ieee80211_softmac.c
@@ -684,7 +684,7 @@ void ieee80211_stop_scan(struct ieee80211_device *ieee)
 }
 
 /* called with ieee->lock held */
-void ieee80211_start_scan(struct ieee80211_device *ieee)
+void ieee80211_rtl_start_scan(struct ieee80211_device *ieee)
 {
 #ifdef ENABLE_DOT11D
 	if(IS_DOT11D_ENABLE(ieee) )
@@ -1430,7 +1430,7 @@ void ieee80211_associate_step1(struct ieee80211_device *ieee)
 	}
 }
 
-void ieee80211_auth_challenge(struct ieee80211_device *ieee, u8 *challenge, int chlen)
+void ieee80211_rtl_auth_challenge(struct ieee80211_device *ieee, u8 *challenge, int chlen)
 {
 	u8 *c;
 	struct sk_buff *skb;
@@ -2262,7 +2262,7 @@ ieee80211_rx_frame_softmac(struct ieee80211_device *ieee, struct sk_buff *skb,
 
 								ieee80211_associate_step2(ieee);
 							}else{
-								ieee80211_auth_challenge(ieee, challenge, chlen);
+								ieee80211_rtl_auth_challenge(ieee, challenge, chlen);
 							}
 						}else{
 							ieee->softmac_stats.rx_auth_rs_err++;
@@ -2376,7 +2376,7 @@ void ieee80211_softmac_xmit(struct ieee80211_txb *txb, struct ieee80211_device *
 			 * to check it any more.
 			 * */
 			//printk("error:no descriptor left@queue_index %d\n", queue_index);
-			//ieee80211_stop_queue(ieee);
+			//ieee80211_rtl_stop_queue(ieee);
 #ifdef USB_TX_DRIVER_AGGREGATION_ENABLE
 			skb_queue_tail(&ieee->skb_drv_aggQ[queue_index], txb->fragments[i]);
 #else
@@ -2440,7 +2440,7 @@ void ieee80211_reset_queue(struct ieee80211_device *ieee)
 
 }
 
-void ieee80211_wake_queue(struct ieee80211_device *ieee)
+void ieee80211_rtl_wake_queue(struct ieee80211_device *ieee)
 {
 
 	unsigned long flags;
@@ -2481,7 +2481,7 @@ exit :
 }
 
 
-void ieee80211_stop_queue(struct ieee80211_device *ieee)
+void ieee80211_rtl_stop_queue(struct ieee80211_device *ieee)
 {
 	//unsigned long flags;
 	//spin_lock_irqsave(&ieee->lock,flags);
@@ -2706,7 +2706,7 @@ void ieee80211_start_bss(struct ieee80211_device *ieee)
 
 	if (ieee->state == IEEE80211_NOLINK){
 		ieee->actscanning = true;
-		ieee80211_start_scan(ieee);
+		ieee80211_rtl_start_scan(ieee);
 	}
 	spin_unlock_irqrestore(&ieee->lock, flags);
 }
@@ -2775,7 +2775,7 @@ void ieee80211_associate_retry_wq(struct ieee80211_device *ieee)
 	{
 		ieee->is_roaming= false;
 		ieee->actscanning = true;
-		ieee80211_start_scan(ieee);
+		ieee80211_rtl_start_scan(ieee);
 	}
 	spin_unlock_irqrestore(&ieee->lock, flags);
 
@@ -3497,8 +3497,8 @@ void notify_wx_assoc_event(struct ieee80211_device *ieee)
 
 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
 //EXPORT_SYMBOL(ieee80211_get_beacon);
-//EXPORT_SYMBOL(ieee80211_wake_queue);
-//EXPORT_SYMBOL(ieee80211_stop_queue);
+//EXPORT_SYMBOL(ieee80211_rtl_wake_queue);
+//EXPORT_SYMBOL(ieee80211_rtl_stop_queue);
 //EXPORT_SYMBOL(ieee80211_reset_queue);
 //EXPORT_SYMBOL(ieee80211_softmac_stop_protocol);
 //EXPORT_SYMBOL(ieee80211_softmac_start_protocol);
@@ -3518,8 +3518,8 @@ void notify_wx_assoc_event(struct ieee80211_device *ieee)
 //EXPORT_SYMBOL(ieee80211_start_scan_syncro);
 #else
 EXPORT_SYMBOL_NOVERS(ieee80211_get_beacon);
-EXPORT_SYMBOL_NOVERS(ieee80211_wake_queue);
-EXPORT_SYMBOL_NOVERS(ieee80211_stop_queue);
+EXPORT_SYMBOL_NOVERS(ieee80211_rtl_wake_queue);
+EXPORT_SYMBOL_NOVERS(ieee80211_rtl_stop_queue);
 EXPORT_SYMBOL_NOVERS(ieee80211_reset_queue);
 EXPORT_SYMBOL_NOVERS(ieee80211_softmac_stop_protocol);
 EXPORT_SYMBOL_NOVERS(ieee80211_softmac_start_protocol);
diff --git a/drivers/staging/rtl8192e/ieee80211/ieee80211_tx.c b/drivers/staging/rtl8192e/ieee80211/ieee80211_tx.c
index 103b33c093f5..798fb4154c25 100644
--- a/drivers/staging/rtl8192e/ieee80211/ieee80211_tx.c
+++ b/drivers/staging/rtl8192e/ieee80211/ieee80211_tx.c
@@ -604,7 +604,7 @@ void ieee80211_query_seqnum(struct ieee80211_device*ieee, struct sk_buff* skb, u
 	}
 }
 
-int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev)
+int ieee80211_rtl_xmit(struct sk_buff *skb, struct net_device *dev)
 {
 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
 	struct ieee80211_device *ieee = netdev_priv(dev);
diff --git a/drivers/staging/rtl8192e/ieee80211/ieee80211_wx.c b/drivers/staging/rtl8192e/ieee80211/ieee80211_wx.c
index 4e34a1f4c66b..3441b72dd8fa 100644
--- a/drivers/staging/rtl8192e/ieee80211/ieee80211_wx.c
+++ b/drivers/staging/rtl8192e/ieee80211/ieee80211_wx.c
@@ -976,7 +976,7 @@ int ieee80211_wx_set_gen_ie(struct ieee80211_device *ieee, u8 *ie, size_t len)
 	{
 		if (len != ie[1]+2)
 		{
-			printk("len:%d, ie:%d\n", len, ie[1]);
+			printk("len:%zu, ie:%d\n", len, ie[1]);
 			return -EINVAL;
 		}
 		buf = kmalloc(len, GFP_KERNEL);
diff --git a/drivers/staging/rtl8192e/ieee80211/rtl819x_BAProc.c b/drivers/staging/rtl8192e/ieee80211/rtl819x_BAProc.c
index 98b3bb6b6d69..e41e8a0c739c 100644
--- a/drivers/staging/rtl8192e/ieee80211/rtl819x_BAProc.c
+++ b/drivers/staging/rtl8192e/ieee80211/rtl819x_BAProc.c
@@ -382,7 +382,7 @@ int ieee80211_rx_ADDBAReq( struct ieee80211_device* ieee, struct sk_buff *skb)
 
 	if (skb->len < sizeof( struct ieee80211_hdr_3addr) + 9)
 	{
-		IEEE80211_DEBUG(IEEE80211_DL_ERR, " Invalid skb len in BAREQ(%d / %d)\n", skb->len, 	(sizeof( struct ieee80211_hdr_3addr) + 9));
+		IEEE80211_DEBUG(IEEE80211_DL_ERR, " Invalid skb len in BAREQ(%d / %zu)\n", skb->len, 	(sizeof( struct ieee80211_hdr_3addr) + 9));
 		return -1;
 	}
 
@@ -481,7 +481,7 @@ int ieee80211_rx_ADDBARsp( struct ieee80211_device* ieee, struct sk_buff *skb)
 
 	if (skb->len < sizeof( struct ieee80211_hdr_3addr) + 9)
 	{
-		IEEE80211_DEBUG(IEEE80211_DL_ERR, " Invalid skb len in BARSP(%d / %d)\n", skb->len, 	(sizeof( struct ieee80211_hdr_3addr) + 9));
+		IEEE80211_DEBUG(IEEE80211_DL_ERR, " Invalid skb len in BARSP(%d / %zu)\n", skb->len, 	(sizeof( struct ieee80211_hdr_3addr) + 9));
 		return -1;
 	}
 	rsp = ( struct ieee80211_hdr_3addr*)skb->data;
@@ -611,7 +611,7 @@ int ieee80211_rx_DELBA(struct ieee80211_device* ieee,struct sk_buff *skb)
 
 	if (skb->len < sizeof( struct ieee80211_hdr_3addr) + 6)
 	{
-		IEEE80211_DEBUG(IEEE80211_DL_ERR, " Invalid skb len in DELBA(%d / %d)\n", skb->len, 	(sizeof( struct ieee80211_hdr_3addr) + 6));
+		IEEE80211_DEBUG(IEEE80211_DL_ERR, " Invalid skb len in DELBA(%d / %zu)\n", skb->len, 	(sizeof( struct ieee80211_hdr_3addr) + 6));
 		return -1;
 	}
 
diff --git a/drivers/staging/rtl8192e/r8192E_core.c b/drivers/staging/rtl8192e/r8192E_core.c
index ff8fe7e32a92..0ca5d8b4f746 100644
--- a/drivers/staging/rtl8192e/r8192E_core.c
+++ b/drivers/staging/rtl8192e/r8192E_core.c
@@ -5795,7 +5795,7 @@ static void rtl8192_rx(struct net_device *dev)
                 stats.fragoffset = 0;
                 stats.ntotalfrag = 1;
 
-                if(!ieee80211_rx(priv->ieee80211, skb, &stats)){
+                if(!ieee80211_rtl_rx(priv->ieee80211, skb, &stats)){
                     dev_kfree_skb_any(skb);
                 } else {
                     priv->stats.rxok++;
@@ -5837,7 +5837,7 @@ static const struct net_device_ops rtl8192_netdev_ops = {
 	.ndo_do_ioctl =			rtl8192_ioctl,
 	.ndo_set_multicast_list =	r8192_set_multicast,
 	.ndo_set_mac_address =		r8192_set_mac_adr,
-	.ndo_start_xmit = 		ieee80211_xmit,
+	.ndo_start_xmit = 		ieee80211_rtl_xmit,
 };
 
 /****************************************************************************
@@ -6121,14 +6121,14 @@ static void __devexit rtl8192_pci_disconnect(struct pci_dev *pdev)
 	RT_TRACE(COMP_DOWN, "wlan driver removed\n");
 }
 
-extern int ieee80211_init(void);
-extern void ieee80211_exit(void);
+extern int ieee80211_rtl_init(void);
+extern void ieee80211_rtl_exit(void);
 
 static int __init rtl8192_pci_module_init(void)
 {
 	int retval;
 
-	retval = ieee80211_init();
+	retval = ieee80211_rtl_init();
 	if (retval)
 		return retval;
 
@@ -6153,7 +6153,7 @@ static void __exit rtl8192_pci_module_exit(void)
 
 	RT_TRACE(COMP_DOWN, "Exiting");
 	rtl8192_proc_module_remove();
-	ieee80211_exit();
+	ieee80211_rtl_exit();
 }
 
 //warning message WB
@@ -6313,7 +6313,7 @@ void rtl8192_try_wake_queue(struct net_device *dev, int pri)
         spin_unlock_irqrestore(&priv->tx_lock,flags);
 
 	if(enough_desc)
-		ieee80211_wake_queue(priv->ieee80211);
+		ieee80211_rtl_wake_queue(priv->ieee80211);
 #endif
 }
 
diff --git a/drivers/staging/rtl8192su/ieee80211/ieee80211.h b/drivers/staging/rtl8192su/ieee80211/ieee80211.h
index f22d024b1c39..9a4c858b0666 100644
--- a/drivers/staging/rtl8192su/ieee80211/ieee80211.h
+++ b/drivers/staging/rtl8192su/ieee80211/ieee80211.h
@@ -1721,13 +1721,13 @@ extern int ieee80211_encrypt_fragment(
 	struct sk_buff *frag,
 	int hdr_len);
 
-extern int rtl8192_ieee80211_xmit(struct sk_buff *skb,
+extern int rtl8192_ieee80211_rtl_xmit(struct sk_buff *skb,
 			  struct net_device *dev);
 extern void ieee80211_txb_free(struct ieee80211_txb *);
 
 
 /* ieee80211_rx.c */
-extern int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
+extern int ieee80211_rtl_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
 			struct ieee80211_rx_stats *rx_stats);
 extern void ieee80211_rx_mgt(struct ieee80211_device *ieee,
 			     struct ieee80211_hdr_4addr *header,
@@ -1783,8 +1783,8 @@ extern void ieee80211_stop_protocol(struct ieee80211_device *ieee);
 extern void ieee80211_softmac_start_protocol(struct ieee80211_device *ieee);
 extern void ieee80211_softmac_stop_protocol(struct ieee80211_device *ieee);
 extern void ieee80211_reset_queue(struct ieee80211_device *ieee);
-extern void ieee80211_wake_queue(struct ieee80211_device *ieee);
-extern void ieee80211_stop_queue(struct ieee80211_device *ieee);
+extern void ieee80211_rtl_wake_queue(struct ieee80211_device *ieee);
+extern void ieee80211_rtl_stop_queue(struct ieee80211_device *ieee);
 extern struct sk_buff *ieee80211_get_beacon(struct ieee80211_device *ieee);
 extern void ieee80211_start_send_beacons(struct ieee80211_device *ieee);
 extern void ieee80211_stop_send_beacons(struct ieee80211_device *ieee);
diff --git a/drivers/staging/rtl8192su/ieee80211/ieee80211_rx.c b/drivers/staging/rtl8192su/ieee80211/ieee80211_rx.c
index ac223cef1d33..fecfa120ff48 100644
--- a/drivers/staging/rtl8192su/ieee80211/ieee80211_rx.c
+++ b/drivers/staging/rtl8192su/ieee80211/ieee80211_rx.c
@@ -208,7 +208,7 @@ static int ieee80211_frag_cache_invalidate(struct ieee80211_device *ieee,
  *
  * Responsible for handling management control frames
  *
- * Called by ieee80211_rx */
+ * Called by ieee80211_rtl_rx */
 static inline int
 ieee80211_rx_frame_mgmt(struct ieee80211_device *ieee, struct sk_buff *skb,
 			struct ieee80211_rx_stats *rx_stats, u16 type,
@@ -289,7 +289,7 @@ static int ieee80211_is_eapol_frame(struct ieee80211_device *ieee,
 	return 0;
 }
 
-/* Called only as a tasklet (software IRQ), by ieee80211_rx */
+/* Called only as a tasklet (software IRQ), by ieee80211_rtl_rx */
 static inline int
 ieee80211_rx_frame_decrypt(struct ieee80211_device* ieee, struct sk_buff *skb,
 			   struct ieee80211_crypt_data *crypt)
@@ -858,7 +858,7 @@ u8 parse_subframe(struct sk_buff *skb,
 /* All received frames are sent to this function. @skb contains the frame in
  * IEEE 802.11 format, i.e., in the format it was sent over air.
  * This function is called only as a tasklet (software IRQ). */
-int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
+int ieee80211_rtl_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
 		 struct ieee80211_rx_stats *rx_stats)
 {
 	struct net_device *dev = ieee->dev;
diff --git a/drivers/staging/rtl8192su/ieee80211/ieee80211_softmac.c b/drivers/staging/rtl8192su/ieee80211/ieee80211_softmac.c
index 203c0a5cc8c1..95d4f84dcf3f 100644
--- a/drivers/staging/rtl8192su/ieee80211/ieee80211_softmac.c
+++ b/drivers/staging/rtl8192su/ieee80211/ieee80211_softmac.c
@@ -610,7 +610,7 @@ void ieee80211_stop_scan(struct ieee80211_device *ieee)
 }
 
 /* called with ieee->lock held */
-void ieee80211_start_scan(struct ieee80211_device *ieee)
+void ieee80211_rtl_start_scan(struct ieee80211_device *ieee)
 {
 	if(IS_DOT11D_ENABLE(ieee) )
 	{
@@ -1281,7 +1281,7 @@ void ieee80211_associate_step1(struct ieee80211_device *ieee)
 	}
 }
 
-void ieee80211_auth_challenge(struct ieee80211_device *ieee, u8 *challenge, int chlen)
+void ieee80211_rtl_auth_challenge(struct ieee80211_device *ieee, u8 *challenge, int chlen)
 {
 	u8 *c;
 	struct sk_buff *skb;
@@ -2054,7 +2054,7 @@ ieee80211_rx_frame_softmac(struct ieee80211_device *ieee, struct sk_buff *skb,
 
 								ieee80211_associate_step2(ieee);
 							}else{
-								ieee80211_auth_challenge(ieee, challenge, chlen);
+								ieee80211_rtl_auth_challenge(ieee, challenge, chlen);
 							}
 						}else{
 							ieee->softmac_stats.rx_auth_rs_err++;
@@ -2162,7 +2162,7 @@ void ieee80211_softmac_xmit(struct ieee80211_txb *txb, struct ieee80211_device *
 			 * to check it any more.
 			 * */
 			//printk("error:no descriptor left@queue_index %d, %d, %d\n", queue_index, skb_queue_len(&ieee->skb_waitQ[queue_index]), ieee->check_nic_enough_desc(ieee->dev,queue_index));
-			//ieee80211_stop_queue(ieee);
+			//ieee80211_rtl_stop_queue(ieee);
 			skb_queue_tail(&ieee->skb_waitQ[queue_index], txb->fragments[i]);
 		}else{
 			ieee->softmac_data_hard_start_xmit(
@@ -2222,7 +2222,7 @@ void ieee80211_reset_queue(struct ieee80211_device *ieee)
 
 }
 
-void ieee80211_wake_queue(struct ieee80211_device *ieee)
+void ieee80211_rtl_wake_queue(struct ieee80211_device *ieee)
 {
 
 	unsigned long flags;
@@ -2263,7 +2263,7 @@ exit :
 }
 
 
-void ieee80211_stop_queue(struct ieee80211_device *ieee)
+void ieee80211_rtl_stop_queue(struct ieee80211_device *ieee)
 {
 	//unsigned long flags;
 	//spin_lock_irqsave(&ieee->lock,flags);
@@ -2479,7 +2479,7 @@ void ieee80211_start_bss(struct ieee80211_device *ieee)
 
 	if (ieee->state == IEEE80211_NOLINK){
 		ieee->actscanning = true;
-		ieee80211_start_scan(ieee);
+		ieee80211_rtl_start_scan(ieee);
 	}
 	spin_unlock_irqrestore(&ieee->lock, flags);
 }
@@ -2552,7 +2552,7 @@ void ieee80211_associate_retry_wq(struct work_struct *work)
 	if(ieee->state == IEEE80211_NOLINK)
 	{
 		ieee->actscanning = true;
-		ieee80211_start_scan(ieee);
+		ieee80211_rtl_start_scan(ieee);
 	}
 	spin_unlock_irqrestore(&ieee->lock, flags);
 
diff --git a/drivers/staging/rtl8192su/ieee80211/ieee80211_tx.c b/drivers/staging/rtl8192su/ieee80211/ieee80211_tx.c
index 60621d6b2a6b..4d54e1e62d22 100644
--- a/drivers/staging/rtl8192su/ieee80211/ieee80211_tx.c
+++ b/drivers/staging/rtl8192su/ieee80211/ieee80211_tx.c
@@ -604,7 +604,7 @@ void ieee80211_query_seqnum(struct ieee80211_device*ieee, struct sk_buff* skb, u
 	}
 }
 
-int rtl8192_ieee80211_xmit(struct sk_buff *skb, struct net_device *dev)
+int rtl8192_ieee80211_rtl_xmit(struct sk_buff *skb, struct net_device *dev)
 {
 	struct ieee80211_device *ieee = netdev_priv(dev);
 	struct ieee80211_txb *txb = NULL;
diff --git a/drivers/staging/rtl8192su/r8192U_core.c b/drivers/staging/rtl8192su/r8192U_core.c
index 66274d7666ff..ccb9d5b8cd44 100644
--- a/drivers/staging/rtl8192su/r8192U_core.c
+++ b/drivers/staging/rtl8192su/r8192U_core.c
@@ -126,6 +126,8 @@ static struct usb_device_id rtl8192_usb_id_tbl[] = {
 	{USB_DEVICE(0x2001, 0x3301)},
 	/* Zinwell */
 	{USB_DEVICE(0x5a57, 0x0290)},
+	/* Guillemot */
+	{USB_DEVICE(0x06f8, 0xe031)},
 	//92SU
 	{USB_DEVICE(0x0bda, 0x8172)},
 	{}
@@ -1501,7 +1503,7 @@ static void rtl8192_rx_isr(struct urb *urb)
         urb->context = skb;
         skb_queue_tail(&priv->rx_queue, skb);
         err = usb_submit_urb(urb, GFP_ATOMIC);
-	if(err && err != EPERM)
+	if(err && err != -EPERM)
 		printk("can not submit rxurb, err is %x,URB status is %x\n",err,urb->status);
 }
 
@@ -7155,7 +7157,7 @@ void rtl8192SU_rx_nomal(struct sk_buff* skb)
 			unicast_packet = true;
 		}
 
-		if(!ieee80211_rx(priv->ieee80211,skb, &stats)) {
+		if(!ieee80211_rtl_rx(priv->ieee80211,skb, &stats)) {
 			dev_kfree_skb_any(skb);
 		} else {
 		//	priv->stats.rxoktotal++;  //YJ,test,090108
@@ -7426,7 +7428,7 @@ static const struct net_device_ops rtl8192_netdev_ops = {
 	.ndo_set_mac_address	= r8192_set_mac_adr,
 	.ndo_validate_addr	= eth_validate_addr,
 	.ndo_change_mtu		= eth_change_mtu,
-	.ndo_start_xmit		= rtl8192_ieee80211_xmit,
+	.ndo_start_xmit		= rtl8192_ieee80211_rtl_xmit,
 };
 
 static int __devinit rtl8192_usb_probe(struct usb_interface *intf,
@@ -7619,7 +7621,7 @@ void rtl8192_try_wake_queue(struct net_device *dev, int pri)
         spin_unlock_irqrestore(&priv->tx_lock,flags);
 
 	if(enough_desc)
-		ieee80211_wake_queue(priv->ieee80211);
+		ieee80211_rtl_wake_queue(priv->ieee80211);
 }
 
 void EnableHWSecurityConfig8192(struct net_device *dev)
diff --git a/drivers/staging/rtl8192u/ieee80211/ieee80211_wx.c b/drivers/staging/rtl8192u/ieee80211/ieee80211_wx.c
index d397f1d68eb7..5f12d62658c9 100644
--- a/drivers/staging/rtl8192u/ieee80211/ieee80211_wx.c
+++ b/drivers/staging/rtl8192u/ieee80211/ieee80211_wx.c
@@ -845,7 +845,7 @@ int ieee80211_wx_set_gen_ie(struct ieee80211_device *ieee, u8 *ie, size_t len)
 	{
 		if (len != ie[1]+2)
 		{
-			printk("len:%d, ie:%d\n", len, ie[1]);
+			printk("len:%zu, ie:%d\n", len, ie[1]);
 			return -EINVAL;
 		}
 		buf = kmalloc(len, GFP_KERNEL);
diff --git a/drivers/staging/rtl8192u/ieee80211/rtl819x_BAProc.c b/drivers/staging/rtl8192u/ieee80211/rtl819x_BAProc.c
index 26af43bb8390..512a57aebde3 100644
--- a/drivers/staging/rtl8192u/ieee80211/rtl819x_BAProc.c
+++ b/drivers/staging/rtl8192u/ieee80211/rtl819x_BAProc.c
@@ -340,7 +340,7 @@ int ieee80211_rx_ADDBAReq( struct ieee80211_device* ieee, struct sk_buff *skb)
 
 	if (skb->len < sizeof( struct ieee80211_hdr_3addr) + 9)
 	{
-		IEEE80211_DEBUG(IEEE80211_DL_ERR, " Invalid skb len in BAREQ(%d / %d)\n", skb->len, 	(sizeof( struct ieee80211_hdr_3addr) + 9));
+		IEEE80211_DEBUG(IEEE80211_DL_ERR, " Invalid skb len in BAREQ(%d / %zu)\n", skb->len, 	(sizeof( struct ieee80211_hdr_3addr) + 9));
 		return -1;
 	}
 
@@ -439,7 +439,7 @@ int ieee80211_rx_ADDBARsp( struct ieee80211_device* ieee, struct sk_buff *skb)
 
 	if (skb->len < sizeof( struct ieee80211_hdr_3addr) + 9)
 	{
-		IEEE80211_DEBUG(IEEE80211_DL_ERR, " Invalid skb len in BARSP(%d / %d)\n", skb->len, 	(sizeof( struct ieee80211_hdr_3addr) + 9));
+		IEEE80211_DEBUG(IEEE80211_DL_ERR, " Invalid skb len in BARSP(%d / %zu)\n", skb->len, 	(sizeof( struct ieee80211_hdr_3addr) + 9));
 		return -1;
 	}
 	rsp = ( struct ieee80211_hdr_3addr*)skb->data;
@@ -569,7 +569,7 @@ int ieee80211_rx_DELBA(struct ieee80211_device* ieee,struct sk_buff *skb)
 
 	if (skb->len < sizeof( struct ieee80211_hdr_3addr) + 6)
 	{
-		IEEE80211_DEBUG(IEEE80211_DL_ERR, " Invalid skb len in DELBA(%d / %d)\n", skb->len, 	(sizeof( struct ieee80211_hdr_3addr) + 6));
+		IEEE80211_DEBUG(IEEE80211_DL_ERR, " Invalid skb len in DELBA(%d / %zu)\n", skb->len, 	(sizeof( struct ieee80211_hdr_3addr) + 6));
 		return -1;
 	}
 
diff --git a/drivers/staging/sm7xx/Kconfig b/drivers/staging/sm7xx/Kconfig
new file mode 100644
index 000000000000..204dbfc3c38b
--- /dev/null
+++ b/drivers/staging/sm7xx/Kconfig
@@ -0,0 +1,15 @@
+config FB_SM7XX
+	tristate "Silicon Motion SM7XX Frame Buffer Support"
+	depends on FB
+	select FB_CFB_FILLRECT
+	select FB_CFB_COPYAREA
+	select FB_CFB_IMAGEBLIT
+	help
+	  Frame Buffer driver for the Silicon Motion SM7XX serial graphic card.
+
+config FB_SM7XX_ACCEL
+	bool "Siliconmotion Acceleration functions (EXPERIMENTAL)"
+	depends on FB_SM7XX && EXPERIMENTAL
+	help
+	  This will compile the Trident frame buffer device with
+	  acceleration functions.
diff --git a/drivers/staging/sm7xx/Makefile b/drivers/staging/sm7xx/Makefile
new file mode 100644
index 000000000000..f43cb9106305
--- /dev/null
+++ b/drivers/staging/sm7xx/Makefile
@@ -0,0 +1,3 @@
+obj-$(CONFIG_FB_SM7XX) += sm7xx.o
+
+sm7xx-y := smtcfb.o
diff --git a/drivers/staging/sm7xx/TODO b/drivers/staging/sm7xx/TODO
new file mode 100644
index 000000000000..1f61f5e11cf5
--- /dev/null
+++ b/drivers/staging/sm7xx/TODO
@@ -0,0 +1,10 @@
+TODO:
+- Dual head support
+- use kernel coding style
+- checkpatch.pl clean
+- refine the code and remove unused code
+- use kernel framebuffer mode setting instead of hard code
+- move it to drivers/video/sm7xx/ or make it be drivers/video/sm7xxfb.c
+
+Please send any patches to Greg Kroah-Hartman <greg@kroah.com> and
+Teddy Wang <teddy.wang@siliconmotion.com.cn>.
diff --git a/drivers/staging/sm7xx/smtc2d.c b/drivers/staging/sm7xx/smtc2d.c
new file mode 100644
index 000000000000..133b86c6a678
--- /dev/null
+++ b/drivers/staging/sm7xx/smtc2d.c
@@ -0,0 +1,979 @@
+/*
+ * Silicon Motion SM7XX 2D drawing engine functions.
+ *
+ * Copyright (C) 2006 Silicon Motion Technology Corp.
+ * Author: Boyod boyod.yang@siliconmotion.com.cn
+ *
+ * Copyright (C) 2009 Lemote, Inc.
+ * Author: Wu Zhangjin, wuzj@lemote.com
+ *
+ *  This file is subject to the terms and conditions of the GNU General Public
+ *  License. See the file COPYING in the main directory of this archive for
+ *  more details.
+ *
+ * Version 0.10.26192.21.01
+ * 	- Add PowerPC support
+ * 	- Add 2D support for Lynx -
+ * Verified on 2.6.19.2
+ * 	Boyod.yang  <boyod.yang@siliconmotion.com.cn>
+ */
+
+unsigned char smtc_de_busy;
+
+void SMTC_write2Dreg(unsigned long nOffset, unsigned long nData)
+{
+	writel(nData, smtc_2DBaseAddress + nOffset);
+}
+
+unsigned long SMTC_read2Dreg(unsigned long nOffset)
+{
+	return readl(smtc_2DBaseAddress + nOffset);
+}
+
+void SMTC_write2Ddataport(unsigned long nOffset, unsigned long nData)
+{
+	writel(nData, smtc_2Ddataport + nOffset);
+}
+
+/**********************************************************************
+ *
+ * deInit
+ *
+ * Purpose
+ *    Drawing engine initialization.
+ *
+ **********************************************************************/
+
+void deInit(unsigned int nModeWidth, unsigned int nModeHeight,
+		unsigned int bpp)
+{
+	/* Get current power configuration. */
+	unsigned char clock;
+	clock = smtc_seqr(0x21);
+
+	/* initialize global 'mutex lock' variable */
+	smtc_de_busy = 0;
+
+	/* Enable 2D Drawing Engine */
+	smtc_seqw(0x21, clock & 0xF8);
+
+	SMTC_write2Dreg(DE_CLIP_TL,
+			FIELD_VALUE(0, DE_CLIP_TL, TOP, 0) |
+			FIELD_SET(0, DE_CLIP_TL, STATUS, DISABLE) |
+			FIELD_SET(0, DE_CLIP_TL, INHIBIT, OUTSIDE) |
+			FIELD_VALUE(0, DE_CLIP_TL, LEFT, 0));
+
+	if (bpp >= 24) {
+		SMTC_write2Dreg(DE_PITCH,
+				FIELD_VALUE(0, DE_PITCH, DESTINATION,
+					    nModeWidth * 3) | FIELD_VALUE(0,
+								  DE_PITCH,
+								  SOURCE,
+								  nModeWidth
+								  * 3));
+	} else {
+		SMTC_write2Dreg(DE_PITCH,
+				FIELD_VALUE(0, DE_PITCH, DESTINATION,
+					    nModeWidth) | FIELD_VALUE(0,
+							      DE_PITCH,
+							      SOURCE,
+							      nModeWidth));
+	}
+
+	SMTC_write2Dreg(DE_WINDOW_WIDTH,
+			FIELD_VALUE(0, DE_WINDOW_WIDTH, DESTINATION,
+				    nModeWidth) | FIELD_VALUE(0,
+							      DE_WINDOW_WIDTH,
+							      SOURCE,
+							      nModeWidth));
+
+	switch (bpp) {
+	case 8:
+		SMTC_write2Dreg(DE_STRETCH_FORMAT,
+				FIELD_SET(0, DE_STRETCH_FORMAT, PATTERN_XY,
+					  NORMAL) | FIELD_VALUE(0,
+							DE_STRETCH_FORMAT,
+							PATTERN_Y,
+							0) |
+				FIELD_VALUE(0, DE_STRETCH_FORMAT, PATTERN_X,
+				    0) | FIELD_SET(0, DE_STRETCH_FORMAT,
+						   PIXEL_FORMAT,
+						   8) | FIELD_SET(0,
+							  DE_STRETCH_FORMAT,
+							  ADDRESSING,
+							  XY) |
+				FIELD_VALUE(0, DE_STRETCH_FORMAT,
+					SOURCE_HEIGHT, 3));
+		break;
+	case 24:
+		SMTC_write2Dreg(DE_STRETCH_FORMAT,
+				FIELD_SET(0, DE_STRETCH_FORMAT, PATTERN_XY,
+					  NORMAL) | FIELD_VALUE(0,
+							DE_STRETCH_FORMAT,
+							PATTERN_Y,
+							0) |
+				FIELD_VALUE(0, DE_STRETCH_FORMAT, PATTERN_X,
+				    0) | FIELD_SET(0, DE_STRETCH_FORMAT,
+							   PIXEL_FORMAT,
+							   24) | FIELD_SET(0,
+							   DE_STRETCH_FORMAT,
+							   ADDRESSING,
+							   XY) |
+				FIELD_VALUE(0, DE_STRETCH_FORMAT,
+					SOURCE_HEIGHT, 3));
+		break;
+	case 16:
+	default:
+		SMTC_write2Dreg(DE_STRETCH_FORMAT,
+				FIELD_SET(0, DE_STRETCH_FORMAT, PATTERN_XY,
+					  NORMAL) | FIELD_VALUE(0,
+							DE_STRETCH_FORMAT,
+							PATTERN_Y,
+							0) |
+				FIELD_VALUE(0, DE_STRETCH_FORMAT, PATTERN_X,
+				    0) | FIELD_SET(0, DE_STRETCH_FORMAT,
+							   PIXEL_FORMAT,
+							   16) | FIELD_SET(0,
+							   DE_STRETCH_FORMAT,
+							   ADDRESSING,
+							   XY) |
+				FIELD_VALUE(0, DE_STRETCH_FORMAT,
+					SOURCE_HEIGHT, 3));
+		break;
+	}
+
+	SMTC_write2Dreg(DE_MASKS,
+			FIELD_VALUE(0, DE_MASKS, BYTE_MASK, 0xFFFF) |
+			FIELD_VALUE(0, DE_MASKS, BIT_MASK, 0xFFFF));
+	SMTC_write2Dreg(DE_COLOR_COMPARE_MASK,
+			FIELD_VALUE(0, DE_COLOR_COMPARE_MASK, MASKS, \
+				0xFFFFFF));
+	SMTC_write2Dreg(DE_COLOR_COMPARE,
+			FIELD_VALUE(0, DE_COLOR_COMPARE, COLOR, 0xFFFFFF));
+}
+
+void deVerticalLine(unsigned long dst_base,
+		    unsigned long dst_pitch,
+		    unsigned long nX,
+		    unsigned long nY,
+		    unsigned long dst_height, unsigned long nColor)
+{
+	deWaitForNotBusy();
+
+	SMTC_write2Dreg(DE_WINDOW_DESTINATION_BASE,
+			FIELD_VALUE(0, DE_WINDOW_DESTINATION_BASE, ADDRESS,
+				    dst_base));
+
+	SMTC_write2Dreg(DE_PITCH,
+			FIELD_VALUE(0, DE_PITCH, DESTINATION, dst_pitch) |
+			FIELD_VALUE(0, DE_PITCH, SOURCE, dst_pitch));
+
+	SMTC_write2Dreg(DE_WINDOW_WIDTH,
+			FIELD_VALUE(0, DE_WINDOW_WIDTH, DESTINATION,
+			    dst_pitch) | FIELD_VALUE(0, DE_WINDOW_WIDTH,
+						     SOURCE,
+						     dst_pitch));
+
+	SMTC_write2Dreg(DE_FOREGROUND,
+			FIELD_VALUE(0, DE_FOREGROUND, COLOR, nColor));
+
+	SMTC_write2Dreg(DE_DESTINATION,
+			FIELD_SET(0, DE_DESTINATION, WRAP, DISABLE) |
+			FIELD_VALUE(0, DE_DESTINATION, X, nX) |
+			FIELD_VALUE(0, DE_DESTINATION, Y, nY));
+
+	SMTC_write2Dreg(DE_DIMENSION,
+			FIELD_VALUE(0, DE_DIMENSION, X, 1) |
+			FIELD_VALUE(0, DE_DIMENSION, Y_ET, dst_height));
+
+	SMTC_write2Dreg(DE_CONTROL,
+			FIELD_SET(0, DE_CONTROL, STATUS, START) |
+			FIELD_SET(0, DE_CONTROL, DIRECTION, LEFT_TO_RIGHT) |
+			FIELD_SET(0, DE_CONTROL, MAJOR, Y) |
+			FIELD_SET(0, DE_CONTROL, STEP_X, NEGATIVE) |
+			FIELD_SET(0, DE_CONTROL, STEP_Y, POSITIVE) |
+			FIELD_SET(0, DE_CONTROL, LAST_PIXEL, OFF) |
+			FIELD_SET(0, DE_CONTROL, COMMAND, SHORT_STROKE) |
+			FIELD_SET(0, DE_CONTROL, ROP_SELECT, ROP2) |
+			FIELD_VALUE(0, DE_CONTROL, ROP, 0x0C));
+
+	smtc_de_busy = 1;
+}
+
+void deHorizontalLine(unsigned long dst_base,
+		      unsigned long dst_pitch,
+		      unsigned long nX,
+		      unsigned long nY,
+		      unsigned long dst_width, unsigned long nColor)
+{
+	deWaitForNotBusy();
+
+	SMTC_write2Dreg(DE_WINDOW_DESTINATION_BASE,
+			FIELD_VALUE(0, DE_WINDOW_DESTINATION_BASE, ADDRESS,
+				    dst_base));
+
+	SMTC_write2Dreg(DE_PITCH,
+			FIELD_VALUE(0, DE_PITCH, DESTINATION, dst_pitch) |
+			FIELD_VALUE(0, DE_PITCH, SOURCE, dst_pitch));
+
+	SMTC_write2Dreg(DE_WINDOW_WIDTH,
+			FIELD_VALUE(0, DE_WINDOW_WIDTH, DESTINATION,
+			    dst_pitch) | FIELD_VALUE(0, DE_WINDOW_WIDTH,
+						     SOURCE,
+						     dst_pitch));
+	SMTC_write2Dreg(DE_FOREGROUND,
+			FIELD_VALUE(0, DE_FOREGROUND, COLOR, nColor));
+	SMTC_write2Dreg(DE_DESTINATION,
+			FIELD_SET(0, DE_DESTINATION, WRAP,
+			  DISABLE) | FIELD_VALUE(0, DE_DESTINATION, X,
+						 nX) | FIELD_VALUE(0,
+							   DE_DESTINATION,
+							   Y,
+							   nY));
+	SMTC_write2Dreg(DE_DIMENSION,
+			FIELD_VALUE(0, DE_DIMENSION, X,
+			    dst_width) | FIELD_VALUE(0, DE_DIMENSION,
+						     Y_ET, 1));
+	SMTC_write2Dreg(DE_CONTROL,
+		FIELD_SET(0, DE_CONTROL, STATUS, START) | FIELD_SET(0,
+							    DE_CONTROL,
+							    DIRECTION,
+							    RIGHT_TO_LEFT)
+		| FIELD_SET(0, DE_CONTROL, MAJOR, X) | FIELD_SET(0,
+							 DE_CONTROL,
+							 STEP_X,
+							 POSITIVE)
+		| FIELD_SET(0, DE_CONTROL, STEP_Y,
+			    NEGATIVE) | FIELD_SET(0, DE_CONTROL,
+						  LAST_PIXEL,
+						  OFF) | FIELD_SET(0,
+							   DE_CONTROL,
+							   COMMAND,
+							   SHORT_STROKE)
+		| FIELD_SET(0, DE_CONTROL, ROP_SELECT,
+			    ROP2) | FIELD_VALUE(0, DE_CONTROL, ROP,
+						0x0C));
+
+	smtc_de_busy = 1;
+}
+
+void deLine(unsigned long dst_base,
+	    unsigned long dst_pitch,
+	    unsigned long nX1,
+	    unsigned long nY1,
+	    unsigned long nX2, unsigned long nY2, unsigned long nColor)
+{
+	unsigned long nCommand =
+	    FIELD_SET(0, DE_CONTROL, STATUS, START) |
+	    FIELD_SET(0, DE_CONTROL, DIRECTION, LEFT_TO_RIGHT) |
+	    FIELD_SET(0, DE_CONTROL, MAJOR, X) |
+	    FIELD_SET(0, DE_CONTROL, STEP_X, POSITIVE) |
+	    FIELD_SET(0, DE_CONTROL, STEP_Y, POSITIVE) |
+	    FIELD_SET(0, DE_CONTROL, LAST_PIXEL, OFF) |
+	    FIELD_SET(0, DE_CONTROL, ROP_SELECT, ROP2) |
+	    FIELD_VALUE(0, DE_CONTROL, ROP, 0x0C);
+	unsigned long DeltaX;
+	unsigned long DeltaY;
+
+	/* Calculate delta X */
+	if (nX1 <= nX2)
+		DeltaX = nX2 - nX1;
+	else {
+		DeltaX = nX1 - nX2;
+		nCommand = FIELD_SET(nCommand, DE_CONTROL, STEP_X, NEGATIVE);
+	}
+
+	/* Calculate delta Y */
+	if (nY1 <= nY2)
+		DeltaY = nY2 - nY1;
+	else {
+		DeltaY = nY1 - nY2;
+		nCommand = FIELD_SET(nCommand, DE_CONTROL, STEP_Y, NEGATIVE);
+	}
+
+	/* Determine the major axis */
+	if (DeltaX < DeltaY)
+		nCommand = FIELD_SET(nCommand, DE_CONTROL, MAJOR, Y);
+
+	/* Vertical line? */
+	if (nX1 == nX2)
+		deVerticalLine(dst_base, dst_pitch, nX1, nY1, DeltaY, nColor);
+
+	/* Horizontal line? */
+	else if (nY1 == nY2)
+		deHorizontalLine(dst_base, dst_pitch, nX1, nY1, \
+				DeltaX, nColor);
+
+	/* Diagonal line? */
+	else if (DeltaX == DeltaY) {
+		deWaitForNotBusy();
+
+		SMTC_write2Dreg(DE_WINDOW_DESTINATION_BASE,
+				FIELD_VALUE(0, DE_WINDOW_DESTINATION_BASE,
+					    ADDRESS, dst_base));
+
+		SMTC_write2Dreg(DE_PITCH,
+				FIELD_VALUE(0, DE_PITCH, DESTINATION,
+					    dst_pitch) | FIELD_VALUE(0,
+							     DE_PITCH,
+							     SOURCE,
+							     dst_pitch));
+
+		SMTC_write2Dreg(DE_WINDOW_WIDTH,
+				FIELD_VALUE(0, DE_WINDOW_WIDTH, DESTINATION,
+					    dst_pitch) | FIELD_VALUE(0,
+							     DE_WINDOW_WIDTH,
+							     SOURCE,
+							     dst_pitch));
+
+		SMTC_write2Dreg(DE_FOREGROUND,
+				FIELD_VALUE(0, DE_FOREGROUND, COLOR, nColor));
+
+		SMTC_write2Dreg(DE_DESTINATION,
+				FIELD_SET(0, DE_DESTINATION, WRAP, DISABLE) |
+				FIELD_VALUE(0, DE_DESTINATION, X, 1) |
+				FIELD_VALUE(0, DE_DESTINATION, Y, nY1));
+
+		SMTC_write2Dreg(DE_DIMENSION,
+				FIELD_VALUE(0, DE_DIMENSION, X, 1) |
+				FIELD_VALUE(0, DE_DIMENSION, Y_ET, DeltaX));
+
+		SMTC_write2Dreg(DE_CONTROL,
+				FIELD_SET(nCommand, DE_CONTROL, COMMAND,
+					  SHORT_STROKE));
+	}
+
+	/* Generic line */
+	else {
+		unsigned int k1, k2, et, w;
+		if (DeltaX < DeltaY) {
+			k1 = 2 * DeltaX;
+			et = k1 - DeltaY;
+			k2 = et - DeltaY;
+			w = DeltaY + 1;
+		} else {
+			k1 = 2 * DeltaY;
+			et = k1 - DeltaX;
+			k2 = et - DeltaX;
+			w = DeltaX + 1;
+		}
+
+		deWaitForNotBusy();
+
+		SMTC_write2Dreg(DE_WINDOW_DESTINATION_BASE,
+				FIELD_VALUE(0, DE_WINDOW_DESTINATION_BASE,
+					    ADDRESS, dst_base));
+
+		SMTC_write2Dreg(DE_PITCH,
+				FIELD_VALUE(0, DE_PITCH, DESTINATION,
+					    dst_pitch) | FIELD_VALUE(0,
+							     DE_PITCH,
+							     SOURCE,
+							     dst_pitch));
+
+		SMTC_write2Dreg(DE_WINDOW_WIDTH,
+				FIELD_VALUE(0, DE_WINDOW_WIDTH, DESTINATION,
+					    dst_pitch) | FIELD_VALUE(0,
+							     DE_WINDOW_WIDTH,
+							     SOURCE,
+							     dst_pitch));
+
+		SMTC_write2Dreg(DE_FOREGROUND,
+				FIELD_VALUE(0, DE_FOREGROUND, COLOR, nColor));
+
+		SMTC_write2Dreg(DE_SOURCE,
+				FIELD_SET(0, DE_SOURCE, WRAP, DISABLE) |
+				FIELD_VALUE(0, DE_SOURCE, X_K1, k1) |
+				FIELD_VALUE(0, DE_SOURCE, Y_K2, k2));
+
+		SMTC_write2Dreg(DE_DESTINATION,
+				FIELD_SET(0, DE_DESTINATION, WRAP, DISABLE) |
+				FIELD_VALUE(0, DE_DESTINATION, X, nX1) |
+				FIELD_VALUE(0, DE_DESTINATION, Y, nY1));
+
+		SMTC_write2Dreg(DE_DIMENSION,
+				FIELD_VALUE(0, DE_DIMENSION, X, w) |
+				FIELD_VALUE(0, DE_DIMENSION, Y_ET, et));
+
+		SMTC_write2Dreg(DE_CONTROL,
+				FIELD_SET(nCommand, DE_CONTROL, COMMAND,
+					  LINE_DRAW));
+	}
+
+	smtc_de_busy = 1;
+}
+
+void deFillRect(unsigned long dst_base,
+		unsigned long dst_pitch,
+		unsigned long dst_X,
+		unsigned long dst_Y,
+		unsigned long dst_width,
+		unsigned long dst_height, unsigned long nColor)
+{
+	deWaitForNotBusy();
+
+	SMTC_write2Dreg(DE_WINDOW_DESTINATION_BASE,
+			FIELD_VALUE(0, DE_WINDOW_DESTINATION_BASE, ADDRESS,
+				    dst_base));
+
+	if (dst_pitch) {
+		SMTC_write2Dreg(DE_PITCH,
+				FIELD_VALUE(0, DE_PITCH, DESTINATION,
+					    dst_pitch) | FIELD_VALUE(0,
+							     DE_PITCH,
+							     SOURCE,
+							     dst_pitch));
+
+		SMTC_write2Dreg(DE_WINDOW_WIDTH,
+				FIELD_VALUE(0, DE_WINDOW_WIDTH, DESTINATION,
+					    dst_pitch) | FIELD_VALUE(0,
+							     DE_WINDOW_WIDTH,
+							     SOURCE,
+							     dst_pitch));
+	}
+
+	SMTC_write2Dreg(DE_FOREGROUND,
+			FIELD_VALUE(0, DE_FOREGROUND, COLOR, nColor));
+
+	SMTC_write2Dreg(DE_DESTINATION,
+			FIELD_SET(0, DE_DESTINATION, WRAP, DISABLE) |
+			FIELD_VALUE(0, DE_DESTINATION, X, dst_X) |
+			FIELD_VALUE(0, DE_DESTINATION, Y, dst_Y));
+
+	SMTC_write2Dreg(DE_DIMENSION,
+			FIELD_VALUE(0, DE_DIMENSION, X, dst_width) |
+			FIELD_VALUE(0, DE_DIMENSION, Y_ET, dst_height));
+
+	SMTC_write2Dreg(DE_CONTROL,
+			FIELD_SET(0, DE_CONTROL, STATUS, START) |
+			FIELD_SET(0, DE_CONTROL, DIRECTION, LEFT_TO_RIGHT) |
+			FIELD_SET(0, DE_CONTROL, LAST_PIXEL, OFF) |
+			FIELD_SET(0, DE_CONTROL, COMMAND, RECTANGLE_FILL) |
+			FIELD_SET(0, DE_CONTROL, ROP_SELECT, ROP2) |
+			FIELD_VALUE(0, DE_CONTROL, ROP, 0x0C));
+
+	smtc_de_busy = 1;
+}
+
+/**********************************************************************
+ *
+ * deRotatePattern
+ *
+ * Purpose
+ *    Rotate the given pattern if necessary
+ *
+ * Parameters
+ *    [in]
+ *	   pPattern  - Pointer to DE_SURFACE structure containing
+ *		       pattern attributes
+ *	   patternX  - X position (0-7) of pattern origin
+ *	   patternY  - Y position (0-7) of pattern origin
+ *
+ *    [out]
+ *	   pattern_dstaddr - Pointer to pre-allocated buffer containing
+ *	   rotated pattern
+ *
+ **********************************************************************/
+void deRotatePattern(unsigned char *pattern_dstaddr,
+		     unsigned long pattern_src_addr,
+		     unsigned long pattern_BPP,
+		     unsigned long pattern_stride, int patternX, int patternY)
+{
+	unsigned int i;
+	unsigned long pattern[PATTERN_WIDTH * PATTERN_HEIGHT];
+	unsigned int x, y;
+	unsigned char *pjPatByte;
+
+	if (pattern_dstaddr != NULL) {
+		deWaitForNotBusy();
+
+		if (patternX || patternY) {
+			/* Rotate pattern */
+			pjPatByte = (unsigned char *)pattern;
+
+			switch (pattern_BPP) {
+			case 8:
+				{
+					for (y = 0; y < 8; y++) {
+						unsigned char *pjBuffer =
+						    pattern_dstaddr +
+						    ((patternY + y) & 7) * 8;
+						for (x = 0; x < 8; x++) {
+							pjBuffer[(patternX +
+								  x) & 7] =
+							    pjPatByte[x];
+						}
+						pjPatByte += pattern_stride;
+					}
+					break;
+				}
+
+			case 16:
+				{
+					for (y = 0; y < 8; y++) {
+						unsigned short *pjBuffer =
+						    (unsigned short *)
+						    pattern_dstaddr +
+						    ((patternY + y) & 7) * 8;
+						for (x = 0; x < 8; x++) {
+							pjBuffer[(patternX +
+								  x) & 7] =
+							    ((unsigned short *)
+							     pjPatByte)[x];
+						}
+						pjPatByte += pattern_stride;
+					}
+					break;
+				}
+
+			case 32:
+				{
+					for (y = 0; y < 8; y++) {
+						unsigned long *pjBuffer =
+						    (unsigned long *)
+						    pattern_dstaddr +
+						    ((patternY + y) & 7) * 8;
+						for (x = 0; x < 8; x++) {
+							pjBuffer[(patternX +
+								  x) & 7] =
+							    ((unsigned long *)
+							     pjPatByte)[x];
+						}
+						pjPatByte += pattern_stride;
+					}
+					break;
+				}
+			}
+		} else {
+			/*Don't rotate,just copy pattern into pattern_dstaddr*/
+			for (i = 0; i < (pattern_BPP * 2); i++) {
+				((unsigned long *)pattern_dstaddr)[i] =
+				    pattern[i];
+			}
+		}
+
+	}
+}
+
+/**********************************************************************
+ *
+ * deCopy
+ *
+ * Purpose
+ *    Copy a rectangular area of the source surface to a destination surface
+ *
+ * Remarks
+ *    Source bitmap must have the same color depth (BPP) as the destination
+ *    bitmap.
+ *
+**********************************************************************/
+void deCopy(unsigned long dst_base,
+	    unsigned long dst_pitch,
+	    unsigned long dst_BPP,
+	    unsigned long dst_X,
+	    unsigned long dst_Y,
+	    unsigned long dst_width,
+	    unsigned long dst_height,
+	    unsigned long src_base,
+	    unsigned long src_pitch,
+	    unsigned long src_X,
+	    unsigned long src_Y, pTransparent pTransp, unsigned char nROP2)
+{
+	unsigned long nDirection = 0;
+	unsigned long nTransparent = 0;
+	/* Direction of ROP2 operation:
+	 * 1 = Left to Right,
+	 * (-1) = Right to Left
+	 */
+	unsigned long opSign = 1;
+	/* xWidth is in pixels */
+	unsigned long xWidth = 192 / (dst_BPP / 8);
+	unsigned long de_ctrl = 0;
+
+	deWaitForNotBusy();
+
+	SMTC_write2Dreg(DE_WINDOW_DESTINATION_BASE,
+			FIELD_VALUE(0, DE_WINDOW_DESTINATION_BASE, ADDRESS,
+				    dst_base));
+
+	SMTC_write2Dreg(DE_WINDOW_SOURCE_BASE,
+			FIELD_VALUE(0, DE_WINDOW_SOURCE_BASE, ADDRESS,
+				    src_base));
+
+	if (dst_pitch && src_pitch) {
+		SMTC_write2Dreg(DE_PITCH,
+			FIELD_VALUE(0, DE_PITCH, DESTINATION,
+				    dst_pitch) | FIELD_VALUE(0,
+						     DE_PITCH,
+						     SOURCE,
+						     src_pitch));
+
+		SMTC_write2Dreg(DE_WINDOW_WIDTH,
+			FIELD_VALUE(0, DE_WINDOW_WIDTH, DESTINATION,
+				    dst_pitch) | FIELD_VALUE(0,
+						     DE_WINDOW_WIDTH,
+						     SOURCE,
+						     src_pitch));
+	}
+
+	/* Set transparent bits if necessary */
+	if (pTransp != NULL) {
+		nTransparent =
+		    pTransp->match | pTransp->select | pTransp->control;
+
+		/* Set color compare register */
+		SMTC_write2Dreg(DE_COLOR_COMPARE,
+				FIELD_VALUE(0, DE_COLOR_COMPARE, COLOR,
+					    pTransp->color));
+	}
+
+	/* Determine direction of operation */
+	if (src_Y < dst_Y) {
+		/* +----------+
+		   |S         |
+		   |          +----------+
+		   |          |      |   |
+		   |          |      |   |
+		   +---|------+      |
+		   |               D |
+		   +----------+ */
+
+		nDirection = BOTTOM_TO_TOP;
+	} else if (src_Y > dst_Y) {
+		/* +----------+
+		   |D         |
+		   |          +----------+
+		   |          |      |   |
+		   |          |      |   |
+		   +---|------+      |
+		   |               S |
+		   +----------+ */
+
+		nDirection = TOP_TO_BOTTOM;
+	} else {
+		/* src_Y == dst_Y */
+
+		if (src_X <= dst_X) {
+			/* +------+---+------+
+			   |S     |   |     D|
+			   |      |   |      |
+			   |      |   |      |
+			   |      |   |      |
+			   +------+---+------+ */
+
+			nDirection = RIGHT_TO_LEFT;
+		} else {
+			/* src_X > dst_X */
+
+			/* +------+---+------+
+			   |D     |   |     S|
+			   |      |   |      |
+			   |      |   |      |
+			   |      |   |      |
+			   +------+---+------+ */
+
+			nDirection = LEFT_TO_RIGHT;
+		}
+	}
+
+	if ((nDirection == BOTTOM_TO_TOP) || (nDirection == RIGHT_TO_LEFT)) {
+		src_X += dst_width - 1;
+		src_Y += dst_height - 1;
+		dst_X += dst_width - 1;
+		dst_Y += dst_height - 1;
+		opSign = (-1);
+	}
+
+	if (dst_BPP >= 24) {
+		src_X *= 3;
+		src_Y *= 3;
+		dst_X *= 3;
+		dst_Y *= 3;
+		dst_width *= 3;
+		if ((nDirection == BOTTOM_TO_TOP)
+		    || (nDirection == RIGHT_TO_LEFT)) {
+			src_X += 2;
+			dst_X += 2;
+		}
+	}
+
+	/* Workaround for 192 byte hw bug */
+	if ((nROP2 != 0x0C) && ((dst_width * (dst_BPP / 8)) >= 192)) {
+		/*
+		 * Perform the ROP2 operation in chunks of (xWidth *
+		 * dst_height)
+		 */
+		while (1) {
+			deWaitForNotBusy();
+
+			SMTC_write2Dreg(DE_SOURCE,
+				FIELD_SET(0, DE_SOURCE, WRAP, DISABLE) |
+				FIELD_VALUE(0, DE_SOURCE, X_K1, src_X) |
+				FIELD_VALUE(0, DE_SOURCE, Y_K2, src_Y));
+
+			SMTC_write2Dreg(DE_DESTINATION,
+				FIELD_SET(0, DE_DESTINATION, WRAP,
+				  DISABLE) | FIELD_VALUE(0,
+							 DE_DESTINATION,
+							 X,
+							 dst_X)
+			| FIELD_VALUE(0, DE_DESTINATION, Y,
+						      dst_Y));
+
+			SMTC_write2Dreg(DE_DIMENSION,
+				FIELD_VALUE(0, DE_DIMENSION, X,
+				    xWidth) | FIELD_VALUE(0,
+							  DE_DIMENSION,
+							  Y_ET,
+							  dst_height));
+
+			de_ctrl =
+			    FIELD_VALUE(0, DE_CONTROL, ROP,
+				nROP2) | nTransparent | FIELD_SET(0,
+							  DE_CONTROL,
+							  ROP_SELECT,
+							  ROP2)
+			    | FIELD_SET(0, DE_CONTROL, COMMAND,
+				BITBLT) | ((nDirection ==
+					    1) ? FIELD_SET(0,
+						   DE_CONTROL,
+						   DIRECTION,
+						   RIGHT_TO_LEFT)
+					   : FIELD_SET(0, DE_CONTROL,
+					       DIRECTION,
+					       LEFT_TO_RIGHT)) |
+			    FIELD_SET(0, DE_CONTROL, STATUS, START);
+
+			SMTC_write2Dreg(DE_CONTROL, de_ctrl);
+
+			src_X += (opSign * xWidth);
+			dst_X += (opSign * xWidth);
+			dst_width -= xWidth;
+
+			if (dst_width <= 0) {
+				/* ROP2 operation is complete */
+				break;
+			}
+
+			if (xWidth > dst_width)
+				xWidth = dst_width;
+		}
+	} else {
+		deWaitForNotBusy();
+		SMTC_write2Dreg(DE_SOURCE,
+			FIELD_SET(0, DE_SOURCE, WRAP, DISABLE) |
+			FIELD_VALUE(0, DE_SOURCE, X_K1, src_X) |
+			FIELD_VALUE(0, DE_SOURCE, Y_K2, src_Y));
+
+		SMTC_write2Dreg(DE_DESTINATION,
+			FIELD_SET(0, DE_DESTINATION, WRAP, DISABLE) |
+			FIELD_VALUE(0, DE_DESTINATION, X, dst_X) |
+			FIELD_VALUE(0, DE_DESTINATION, Y, dst_Y));
+
+		SMTC_write2Dreg(DE_DIMENSION,
+			FIELD_VALUE(0, DE_DIMENSION, X, dst_width) |
+			FIELD_VALUE(0, DE_DIMENSION, Y_ET, dst_height));
+
+		de_ctrl = FIELD_VALUE(0, DE_CONTROL, ROP, nROP2) |
+		    nTransparent |
+		    FIELD_SET(0, DE_CONTROL, ROP_SELECT, ROP2) |
+		    FIELD_SET(0, DE_CONTROL, COMMAND, BITBLT) |
+		    ((nDirection == 1) ? FIELD_SET(0, DE_CONTROL, DIRECTION,
+						   RIGHT_TO_LEFT)
+		     : FIELD_SET(0, DE_CONTROL, DIRECTION,
+				 LEFT_TO_RIGHT)) | FIELD_SET(0, DE_CONTROL,
+							     STATUS, START);
+		SMTC_write2Dreg(DE_CONTROL, de_ctrl);
+	}
+
+	smtc_de_busy = 1;
+}
+
+/*
+ * This function sets the pixel format that will apply to the 2D Engine.
+ */
+void deSetPixelFormat(unsigned long bpp)
+{
+	unsigned long de_format;
+
+	de_format = SMTC_read2Dreg(DE_STRETCH_FORMAT);
+
+	switch (bpp) {
+	case 8:
+		de_format =
+		    FIELD_SET(de_format, DE_STRETCH_FORMAT, PIXEL_FORMAT, 8);
+		break;
+	default:
+	case 16:
+		de_format =
+		    FIELD_SET(de_format, DE_STRETCH_FORMAT, PIXEL_FORMAT, 16);
+		break;
+	case 32:
+		de_format =
+		    FIELD_SET(de_format, DE_STRETCH_FORMAT, PIXEL_FORMAT, 32);
+		break;
+	}
+
+	SMTC_write2Dreg(DE_STRETCH_FORMAT, de_format);
+}
+
+/*
+ * System memory to Video memory monochrome expansion.
+ *
+ * Source is monochrome image in system memory.  This function expands the
+ * monochrome data to color image in video memory.
+ */
+
+long deSystemMem2VideoMemMonoBlt(const char *pSrcbuf,
+				 long srcDelta,
+				 unsigned long startBit,
+				 unsigned long dBase,
+				 unsigned long dPitch,
+				 unsigned long bpp,
+				 unsigned long dx, unsigned long dy,
+				 unsigned long width, unsigned long height,
+				 unsigned long fColor,
+				 unsigned long bColor,
+				 unsigned long rop2) {
+	unsigned long bytePerPixel;
+	unsigned long ulBytesPerScan;
+	unsigned long ul4BytesPerScan;
+	unsigned long ulBytesRemain;
+	unsigned long de_ctrl = 0;
+	unsigned char ajRemain[4];
+	long i, j;
+
+	bytePerPixel = bpp / 8;
+
+	/* Just make sure the start bit is within legal range */
+	startBit &= 7;
+
+	ulBytesPerScan = (width + startBit + 7) / 8;
+	ul4BytesPerScan = ulBytesPerScan & ~3;
+	ulBytesRemain = ulBytesPerScan & 3;
+
+	if (smtc_de_busy)
+		deWaitForNotBusy();
+
+	/*
+	 * 2D Source Base.  Use 0 for HOST Blt.
+	 */
+
+	SMTC_write2Dreg(DE_WINDOW_SOURCE_BASE, 0);
+
+	/*
+	 * 2D Destination Base.
+	 *
+	 * It is an address offset (128 bit aligned) from the beginning of
+	 * frame buffer.
+	 */
+
+	SMTC_write2Dreg(DE_WINDOW_DESTINATION_BASE, dBase);
+
+	if (dPitch) {
+
+		/*
+		 * Program pitch (distance between the 1st points of two
+		 * adjacent lines).
+		 *
+		 * Note that input pitch is BYTE value, but the 2D Pitch
+		 * register uses pixel values. Need Byte to pixel convertion.
+		 */
+
+		SMTC_write2Dreg(DE_PITCH,
+			FIELD_VALUE(0, DE_PITCH, DESTINATION,
+			    dPitch /
+			    bytePerPixel) | FIELD_VALUE(0,
+							DE_PITCH,
+							SOURCE,
+							dPitch /
+							bytePerPixel));
+
+		/* Screen Window width in Pixels.
+		 *
+		 * 2D engine uses this value to calculate the linear address in
+		 * frame buffer for a given point.
+		 */
+
+		SMTC_write2Dreg(DE_WINDOW_WIDTH,
+			FIELD_VALUE(0, DE_WINDOW_WIDTH, DESTINATION,
+			    (dPitch /
+			     bytePerPixel)) | FIELD_VALUE(0,
+							  DE_WINDOW_WIDTH,
+							  SOURCE,
+							  (dPitch
+							   /
+							   bytePerPixel)));
+	}
+	/* Note: For 2D Source in Host Write, only X_K1 field is needed, and
+	 * Y_K2 field is not used. For mono bitmap, use startBit for X_K1.
+	 */
+
+	SMTC_write2Dreg(DE_SOURCE,
+			FIELD_SET(0, DE_SOURCE, WRAP, DISABLE) |
+			FIELD_VALUE(0, DE_SOURCE, X_K1, startBit) |
+			FIELD_VALUE(0, DE_SOURCE, Y_K2, 0));
+
+	SMTC_write2Dreg(DE_DESTINATION,
+			FIELD_SET(0, DE_DESTINATION, WRAP, DISABLE) |
+			FIELD_VALUE(0, DE_DESTINATION, X, dx) |
+			FIELD_VALUE(0, DE_DESTINATION, Y, dy));
+
+	SMTC_write2Dreg(DE_DIMENSION,
+			FIELD_VALUE(0, DE_DIMENSION, X, width) |
+			FIELD_VALUE(0, DE_DIMENSION, Y_ET, height));
+
+	SMTC_write2Dreg(DE_FOREGROUND, fColor);
+	SMTC_write2Dreg(DE_BACKGROUND, bColor);
+
+	if (bpp)
+		deSetPixelFormat(bpp);
+	/* Set the pixel format of the destination */
+
+	de_ctrl = FIELD_VALUE(0, DE_CONTROL, ROP, rop2) |
+	    FIELD_SET(0, DE_CONTROL, ROP_SELECT, ROP2) |
+	    FIELD_SET(0, DE_CONTROL, COMMAND, HOST_WRITE) |
+	    FIELD_SET(0, DE_CONTROL, HOST, MONO) |
+	    FIELD_SET(0, DE_CONTROL, STATUS, START);
+
+	SMTC_write2Dreg(DE_CONTROL, de_ctrl | deGetTransparency());
+
+	/* Write MONO data (line by line) to 2D Engine data port */
+	for (i = 0; i < height; i++) {
+		/* For each line, send the data in chunks of 4 bytes */
+		for (j = 0; j < (ul4BytesPerScan / 4); j++)
+			SMTC_write2Ddataport(0,
+					     *(unsigned long *)(pSrcbuf +
+								(j * 4)));
+
+		if (ulBytesRemain) {
+			memcpy(ajRemain, pSrcbuf + ul4BytesPerScan,
+			       ulBytesRemain);
+			SMTC_write2Ddataport(0, *(unsigned long *)ajRemain);
+		}
+
+		pSrcbuf += srcDelta;
+	}
+	smtc_de_busy = 1;
+
+	return 0;
+}
+
+/*
+ * This function gets the transparency status from DE_CONTROL register.
+ * It returns a double word with the transparent fields properly set,
+ * while other fields are 0.
+ */
+unsigned long deGetTransparency(void)
+{
+	unsigned long de_ctrl;
+
+	de_ctrl = SMTC_read2Dreg(DE_CONTROL);
+
+	de_ctrl &=
+	    FIELD_MASK(DE_CONTROL_TRANSPARENCY_MATCH) |
+	    FIELD_MASK(DE_CONTROL_TRANSPARENCY_SELECT) |
+	    FIELD_MASK(DE_CONTROL_TRANSPARENCY);
+
+	return de_ctrl;
+}
diff --git a/drivers/staging/sm7xx/smtc2d.h b/drivers/staging/sm7xx/smtc2d.h
new file mode 100644
index 000000000000..38d0c335322b
--- /dev/null
+++ b/drivers/staging/sm7xx/smtc2d.h
@@ -0,0 +1,530 @@
+/*
+ * Silicon Motion SM712 2D drawing engine functions.
+ *
+ * Copyright (C) 2006 Silicon Motion Technology Corp.
+ * Author: Ge Wang, gewang@siliconmotion.com
+ *
+ * Copyright (C) 2009 Lemote, Inc.
+ * Author: Wu Zhangjin, wuzj@lemote.com
+ *
+ *  This file is subject to the terms and conditions of the GNU General Public
+ *  License. See the file COPYING in the main directory of this archive for
+ *  more details.
+ */
+
+#ifndef NULL
+#define NULL	 0
+#endif
+
+/* Internal macros */
+
+#define _F_START(f)		(0 ? f)
+#define _F_END(f)		(1 ? f)
+#define _F_SIZE(f)		(1 + _F_END(f) - _F_START(f))
+#define _F_MASK(f)		(((1ULL << _F_SIZE(f)) - 1) << _F_START(f))
+#define _F_NORMALIZE(v, f)	(((v) & _F_MASK(f)) >> _F_START(f))
+#define _F_DENORMALIZE(v, f)	(((v) << _F_START(f)) & _F_MASK(f))
+
+/* Global macros */
+
+#define FIELD_GET(x, reg, field) \
+( \
+    _F_NORMALIZE((x), reg ## _ ## field) \
+)
+
+#define FIELD_SET(x, reg, field, value) \
+( \
+    (x & ~_F_MASK(reg ## _ ## field)) \
+    | _F_DENORMALIZE(reg ## _ ## field ## _ ## value, reg ## _ ## field) \
+)
+
+#define FIELD_VALUE(x, reg, field, value) \
+( \
+    (x & ~_F_MASK(reg ## _ ## field)) \
+    | _F_DENORMALIZE(value, reg ## _ ## field) \
+)
+
+#define FIELD_CLEAR(reg, field) \
+( \
+    ~_F_MASK(reg ## _ ## field) \
+)
+
+/* Field Macros                        */
+
+#define FIELD_START(field)	(0 ? field)
+#define FIELD_END(field)	(1 ? field)
+#define FIELD_SIZE(field) \
+	(1 + FIELD_END(field) - FIELD_START(field))
+
+#define FIELD_MASK(field) \
+	(((1 << (FIELD_SIZE(field)-1)) \
+	| ((1 << (FIELD_SIZE(field)-1)) - 1)) \
+	<< FIELD_START(field))
+
+#define FIELD_NORMALIZE(reg, field) \
+	(((reg) & FIELD_MASK(field)) >> FIELD_START(field))
+
+#define FIELD_DENORMALIZE(field, value) \
+	(((value) << FIELD_START(field)) & FIELD_MASK(field))
+
+#define FIELD_INIT(reg, field, value) \
+	FIELD_DENORMALIZE(reg ## _ ## field, \
+		reg ## _ ## field ## _ ## value)
+
+#define FIELD_INIT_VAL(reg, field, value) \
+	(FIELD_DENORMALIZE(reg ## _ ## field, value))
+
+#define FIELD_VAL_SET(x, r, f, v) ({ \
+	x = (x & ~FIELD_MASK(r ## _ ## f)) \
+	| FIELD_DENORMALIZE(r ## _ ## f, r ## _ ## f ## _ ## v) \
+})
+
+#define RGB(r, g, b)	((unsigned long)(((r) << 16) | ((g) << 8) | (b)))
+
+/* Transparent info definition */
+typedef struct {
+	unsigned long match;	/* Matching pixel is OPAQUE/TRANSPARENT */
+	unsigned long select;	/* Transparency controlled by SRC/DST */
+	unsigned long control;	/* ENABLE/DISABLE transparency */
+	unsigned long color;	/* Transparent color */
+} Transparent, *pTransparent;
+
+#define PIXEL_DEPTH_1_BP	0	/* 1 bit per pixel */
+#define PIXEL_DEPTH_8_BPP	1	/* 8 bits per pixel */
+#define PIXEL_DEPTH_16_BPP	2	/* 16 bits per pixel */
+#define PIXEL_DEPTH_32_BPP	3	/* 32 bits per pixel */
+#define PIXEL_DEPTH_YUV422	8	/* 16 bits per pixel YUV422 */
+#define PIXEL_DEPTH_YUV420	9	/* 16 bits per pixel YUV420 */
+
+#define PATTERN_WIDTH		8
+#define PATTERN_HEIGHT		8
+
+#define	TOP_TO_BOTTOM		0
+#define	BOTTOM_TO_TOP		1
+#define RIGHT_TO_LEFT		BOTTOM_TO_TOP
+#define LEFT_TO_RIGHT		TOP_TO_BOTTOM
+
+/* Constants used in Transparent structure */
+#define MATCH_OPAQUE		0x00000000
+#define MATCH_TRANSPARENT	0x00000400
+#define SOURCE			0x00000000
+#define DESTINATION		0x00000200
+
+/* 2D registers. */
+
+#define	DE_SOURCE			0x000000
+#define	DE_SOURCE_WRAP			31 : 31
+#define	DE_SOURCE_WRAP_DISABLE		0
+#define	DE_SOURCE_WRAP_ENABLE		1
+#define	DE_SOURCE_X_K1			29 : 16
+#define	DE_SOURCE_Y_K2			15 : 0
+
+#define	DE_DESTINATION			0x000004
+#define	DE_DESTINATION_WRAP		31 : 31
+#define	DE_DESTINATION_WRAP_DISABLE	0
+#define	DE_DESTINATION_WRAP_ENABLE	1
+#define	DE_DESTINATION_X		28 : 16
+#define	DE_DESTINATION_Y		15 : 0
+
+#define	DE_DIMENSION			0x000008
+#define	DE_DIMENSION_X			28 : 16
+#define	DE_DIMENSION_Y_ET		15 : 0
+
+#define	DE_CONTROL			0x00000C
+#define	DE_CONTROL_STATUS		31 : 31
+#define	DE_CONTROL_STATUS_STOP		0
+#define	DE_CONTROL_STATUS_START		1
+#define	DE_CONTROL_PATTERN		30 : 30
+#define	DE_CONTROL_PATTERN_MONO		0
+#define	DE_CONTROL_PATTERN_COLOR	1
+#define	DE_CONTROL_UPDATE_DESTINATION_X		29 : 29
+#define	DE_CONTROL_UPDATE_DESTINATION_X_DISABLE	0
+#define	DE_CONTROL_UPDATE_DESTINATION_X_ENABLE	1
+#define	DE_CONTROL_QUICK_START			28 : 28
+#define	DE_CONTROL_QUICK_START_DISABLE		0
+#define	DE_CONTROL_QUICK_START_ENABLE		1
+#define	DE_CONTROL_DIRECTION			27 : 27
+#define	DE_CONTROL_DIRECTION_LEFT_TO_RIGHT	0
+#define	DE_CONTROL_DIRECTION_RIGHT_TO_LEFT	1
+#define	DE_CONTROL_MAJOR			26 : 26
+#define	DE_CONTROL_MAJOR_X			0
+#define	DE_CONTROL_MAJOR_Y			1
+#define	DE_CONTROL_STEP_X			25 : 25
+#define	DE_CONTROL_STEP_X_POSITIVE		1
+#define	DE_CONTROL_STEP_X_NEGATIVE		0
+#define	DE_CONTROL_STEP_Y			24 : 24
+#define	DE_CONTROL_STEP_Y_POSITIVE		1
+#define	DE_CONTROL_STEP_Y_NEGATIVE		0
+#define	DE_CONTROL_STRETCH			23 : 23
+#define	DE_CONTROL_STRETCH_DISABLE		0
+#define	DE_CONTROL_STRETCH_ENABLE		1
+#define	DE_CONTROL_HOST				22 : 22
+#define	DE_CONTROL_HOST_COLOR			0
+#define	DE_CONTROL_HOST_MONO			1
+#define	DE_CONTROL_LAST_PIXEL			21 : 21
+#define	DE_CONTROL_LAST_PIXEL_OFF		0
+#define	DE_CONTROL_LAST_PIXEL_ON		1
+#define	DE_CONTROL_COMMAND			20 : 16
+#define	DE_CONTROL_COMMAND_BITBLT		0
+#define	DE_CONTROL_COMMAND_RECTANGLE_FILL	1
+#define	DE_CONTROL_COMMAND_DE_TILE		2
+#define	DE_CONTROL_COMMAND_TRAPEZOID_FILL	3
+#define	DE_CONTROL_COMMAND_ALPHA_BLEND		4
+#define	DE_CONTROL_COMMAND_RLE_STRIP		5
+#define	DE_CONTROL_COMMAND_SHORT_STROKE		6
+#define	DE_CONTROL_COMMAND_LINE_DRAW		7
+#define	DE_CONTROL_COMMAND_HOST_WRITE		8
+#define	DE_CONTROL_COMMAND_HOST_READ		9
+#define	DE_CONTROL_COMMAND_HOST_WRITE_BOTTOM_UP	10
+#define	DE_CONTROL_COMMAND_ROTATE		11
+#define	DE_CONTROL_COMMAND_FONT			12
+#define	DE_CONTROL_COMMAND_TEXTURE_LOAD		15
+#define	DE_CONTROL_ROP_SELECT			15 : 15
+#define	DE_CONTROL_ROP_SELECT_ROP3		0
+#define	DE_CONTROL_ROP_SELECT_ROP2		1
+#define	DE_CONTROL_ROP2_SOURCE			14 : 14
+#define	DE_CONTROL_ROP2_SOURCE_BITMAP		0
+#define	DE_CONTROL_ROP2_SOURCE_PATTERN		1
+#define	DE_CONTROL_MONO_DATA			13 : 12
+#define	DE_CONTROL_MONO_DATA_NOT_PACKED		0
+#define	DE_CONTROL_MONO_DATA_8_PACKED		1
+#define	DE_CONTROL_MONO_DATA_16_PACKED		2
+#define	DE_CONTROL_MONO_DATA_32_PACKED		3
+#define	DE_CONTROL_REPEAT_ROTATE		11 : 11
+#define	DE_CONTROL_REPEAT_ROTATE_DISABLE	0
+#define	DE_CONTROL_REPEAT_ROTATE_ENABLE		1
+#define	DE_CONTROL_TRANSPARENCY_MATCH		10 : 10
+#define	DE_CONTROL_TRANSPARENCY_MATCH_OPAQUE		0
+#define	DE_CONTROL_TRANSPARENCY_MATCH_TRANSPARENT	1
+#define	DE_CONTROL_TRANSPARENCY_SELECT			9 : 9
+#define	DE_CONTROL_TRANSPARENCY_SELECT_SOURCE		0
+#define	DE_CONTROL_TRANSPARENCY_SELECT_DESTINATION	1
+#define	DE_CONTROL_TRANSPARENCY				8 : 8
+#define	DE_CONTROL_TRANSPARENCY_DISABLE			0
+#define	DE_CONTROL_TRANSPARENCY_ENABLE			1
+#define	DE_CONTROL_ROP					7 : 0
+
+/* Pseudo fields. */
+
+#define	DE_CONTROL_SHORT_STROKE_DIR			27 : 24
+#define	DE_CONTROL_SHORT_STROKE_DIR_225			0
+#define	DE_CONTROL_SHORT_STROKE_DIR_135			1
+#define	DE_CONTROL_SHORT_STROKE_DIR_315			2
+#define	DE_CONTROL_SHORT_STROKE_DIR_45			3
+#define	DE_CONTROL_SHORT_STROKE_DIR_270			4
+#define	DE_CONTROL_SHORT_STROKE_DIR_90			5
+#define	DE_CONTROL_SHORT_STROKE_DIR_180			8
+#define	DE_CONTROL_SHORT_STROKE_DIR_0			10
+#define	DE_CONTROL_ROTATION				25 : 24
+#define	DE_CONTROL_ROTATION_0				0
+#define	DE_CONTROL_ROTATION_270				1
+#define	DE_CONTROL_ROTATION_90				2
+#define	DE_CONTROL_ROTATION_180				3
+
+#define	DE_PITCH					0x000010
+#define	DE_PITCH_DESTINATION				28 : 16
+#define	DE_PITCH_SOURCE					12 : 0
+
+#define	DE_FOREGROUND					0x000014
+#define	DE_FOREGROUND_COLOR				31 : 0
+
+#define	DE_BACKGROUND					0x000018
+#define	DE_BACKGROUND_COLOR				31 : 0
+
+#define	DE_STRETCH_FORMAT				0x00001C
+#define	DE_STRETCH_FORMAT_PATTERN_XY			30 : 30
+#define	DE_STRETCH_FORMAT_PATTERN_XY_NORMAL		0
+#define	DE_STRETCH_FORMAT_PATTERN_XY_OVERWRITE		1
+#define	DE_STRETCH_FORMAT_PATTERN_Y			29 : 27
+#define	DE_STRETCH_FORMAT_PATTERN_X			25 : 23
+#define	DE_STRETCH_FORMAT_PIXEL_FORMAT			21 : 20
+#define	DE_STRETCH_FORMAT_PIXEL_FORMAT_8		0
+#define	DE_STRETCH_FORMAT_PIXEL_FORMAT_16		1
+#define	DE_STRETCH_FORMAT_PIXEL_FORMAT_24		3
+#define	DE_STRETCH_FORMAT_PIXEL_FORMAT_32		2
+#define	DE_STRETCH_FORMAT_ADDRESSING			19 : 16
+#define	DE_STRETCH_FORMAT_ADDRESSING_XY			0
+#define	DE_STRETCH_FORMAT_ADDRESSING_LINEAR		15
+#define	DE_STRETCH_FORMAT_SOURCE_HEIGHT			11 : 0
+
+#define	DE_COLOR_COMPARE				0x000020
+#define	DE_COLOR_COMPARE_COLOR				23 : 0
+
+#define	DE_COLOR_COMPARE_MASK				0x000024
+#define	DE_COLOR_COMPARE_MASK_MASKS			23 : 0
+
+#define	DE_MASKS					0x000028
+#define	DE_MASKS_BYTE_MASK				31 : 16
+#define	DE_MASKS_BIT_MASK				15 : 0
+
+#define	DE_CLIP_TL					0x00002C
+#define	DE_CLIP_TL_TOP					31 : 16
+#define	DE_CLIP_TL_STATUS				13 : 13
+#define	DE_CLIP_TL_STATUS_DISABLE			0
+#define	DE_CLIP_TL_STATUS_ENABLE			1
+#define	DE_CLIP_TL_INHIBIT				12 : 12
+#define	DE_CLIP_TL_INHIBIT_OUTSIDE			0
+#define	DE_CLIP_TL_INHIBIT_INSIDE			1
+#define	DE_CLIP_TL_LEFT					11 : 0
+
+#define	DE_CLIP_BR					0x000030
+#define	DE_CLIP_BR_BOTTOM				31 : 16
+#define	DE_CLIP_BR_RIGHT				12 : 0
+
+#define	DE_MONO_PATTERN_LOW				0x000034
+#define	DE_MONO_PATTERN_LOW_PATTERN			31 : 0
+
+#define	DE_MONO_PATTERN_HIGH				0x000038
+#define	DE_MONO_PATTERN_HIGH_PATTERN			31 : 0
+
+#define	DE_WINDOW_WIDTH					0x00003C
+#define	DE_WINDOW_WIDTH_DESTINATION			28 : 16
+#define	DE_WINDOW_WIDTH_SOURCE				12 : 0
+
+#define	DE_WINDOW_SOURCE_BASE				0x000040
+#define	DE_WINDOW_SOURCE_BASE_EXT			27 : 27
+#define	DE_WINDOW_SOURCE_BASE_EXT_LOCAL			0
+#define	DE_WINDOW_SOURCE_BASE_EXT_EXTERNAL		1
+#define	DE_WINDOW_SOURCE_BASE_CS			26 : 26
+#define	DE_WINDOW_SOURCE_BASE_CS_0			0
+#define	DE_WINDOW_SOURCE_BASE_CS_1			1
+#define	DE_WINDOW_SOURCE_BASE_ADDRESS			25 : 0
+
+#define	DE_WINDOW_DESTINATION_BASE			0x000044
+#define	DE_WINDOW_DESTINATION_BASE_EXT			27 : 27
+#define	DE_WINDOW_DESTINATION_BASE_EXT_LOCAL		0
+#define	DE_WINDOW_DESTINATION_BASE_EXT_EXTERNAL		1
+#define	DE_WINDOW_DESTINATION_BASE_CS			26 : 26
+#define	DE_WINDOW_DESTINATION_BASE_CS_0			0
+#define	DE_WINDOW_DESTINATION_BASE_CS_1			1
+#define	DE_WINDOW_DESTINATION_BASE_ADDRESS		25 : 0
+
+#define	DE_ALPHA					0x000048
+#define	DE_ALPHA_VALUE					7 : 0
+
+#define	DE_WRAP						0x00004C
+#define	DE_WRAP_X					31 : 16
+#define	DE_WRAP_Y					15 : 0
+
+#define	DE_STATUS					0x000050
+#define	DE_STATUS_CSC					1 : 1
+#define	DE_STATUS_CSC_CLEAR				0
+#define	DE_STATUS_CSC_NOT_ACTIVE			0
+#define	DE_STATUS_CSC_ACTIVE				1
+#define	DE_STATUS_2D					0 : 0
+#define	DE_STATUS_2D_CLEAR				0
+#define	DE_STATUS_2D_NOT_ACTIVE				0
+#define	DE_STATUS_2D_ACTIVE				1
+
+/* Color Space Conversion registers. */
+
+#define	CSC_Y_SOURCE_BASE				0x0000C8
+#define	CSC_Y_SOURCE_BASE_EXT				27 : 27
+#define	CSC_Y_SOURCE_BASE_EXT_LOCAL			0
+#define	CSC_Y_SOURCE_BASE_EXT_EXTERNAL			1
+#define	CSC_Y_SOURCE_BASE_CS				26 : 26
+#define	CSC_Y_SOURCE_BASE_CS_0				0
+#define	CSC_Y_SOURCE_BASE_CS_1				1
+#define	CSC_Y_SOURCE_BASE_ADDRESS			25 : 0
+
+#define	CSC_CONSTANTS					0x0000CC
+#define	CSC_CONSTANTS_Y					31 : 24
+#define	CSC_CONSTANTS_R					23 : 16
+#define	CSC_CONSTANTS_G					15 : 8
+#define	CSC_CONSTANTS_B					7 : 0
+
+#define	CSC_Y_SOURCE_X					0x0000D0
+#define	CSC_Y_SOURCE_X_INTEGER				26 : 16
+#define	CSC_Y_SOURCE_X_FRACTION				15 : 3
+
+#define	CSC_Y_SOURCE_Y					0x0000D4
+#define	CSC_Y_SOURCE_Y_INTEGER				27 : 16
+#define	CSC_Y_SOURCE_Y_FRACTION				15 : 3
+
+#define	CSC_U_SOURCE_BASE				0x0000D8
+#define	CSC_U_SOURCE_BASE_EXT				27 : 27
+#define	CSC_U_SOURCE_BASE_EXT_LOCAL			0
+#define	CSC_U_SOURCE_BASE_EXT_EXTERNAL			1
+#define	CSC_U_SOURCE_BASE_CS				26 : 26
+#define	CSC_U_SOURCE_BASE_CS_0				0
+#define	CSC_U_SOURCE_BASE_CS_1				1
+#define	CSC_U_SOURCE_BASE_ADDRESS			25 : 0
+
+#define	CSC_V_SOURCE_BASE				0x0000DC
+#define	CSC_V_SOURCE_BASE_EXT				27 : 27
+#define	CSC_V_SOURCE_BASE_EXT_LOCAL			0
+#define	CSC_V_SOURCE_BASE_EXT_EXTERNAL			1
+#define	CSC_V_SOURCE_BASE_CS				26 : 26
+#define	CSC_V_SOURCE_BASE_CS_0				0
+#define	CSC_V_SOURCE_BASE_CS_1				1
+#define	CSC_V_SOURCE_BASE_ADDRESS			25 : 0
+
+#define	CSC_SOURCE_DIMENSION				0x0000E0
+#define	CSC_SOURCE_DIMENSION_X				31 : 16
+#define	CSC_SOURCE_DIMENSION_Y				15 : 0
+
+#define	CSC_SOURCE_PITCH				0x0000E4
+#define	CSC_SOURCE_PITCH_Y				31 : 16
+#define	CSC_SOURCE_PITCH_UV				15 : 0
+
+#define	CSC_DESTINATION					0x0000E8
+#define	CSC_DESTINATION_WRAP				31 : 31
+#define	CSC_DESTINATION_WRAP_DISABLE			0
+#define	CSC_DESTINATION_WRAP_ENABLE			1
+#define	CSC_DESTINATION_X				27 : 16
+#define	CSC_DESTINATION_Y				11 : 0
+
+#define	CSC_DESTINATION_DIMENSION			0x0000EC
+#define	CSC_DESTINATION_DIMENSION_X			31 : 16
+#define	CSC_DESTINATION_DIMENSION_Y			15 : 0
+
+#define	CSC_DESTINATION_PITCH				0x0000F0
+#define	CSC_DESTINATION_PITCH_X				31 : 16
+#define	CSC_DESTINATION_PITCH_Y				15 : 0
+
+#define	CSC_SCALE_FACTOR				0x0000F4
+#define	CSC_SCALE_FACTOR_HORIZONTAL			31 : 16
+#define	CSC_SCALE_FACTOR_VERTICAL			15 : 0
+
+#define	CSC_DESTINATION_BASE				0x0000F8
+#define	CSC_DESTINATION_BASE_EXT			27 : 27
+#define	CSC_DESTINATION_BASE_EXT_LOCAL			0
+#define	CSC_DESTINATION_BASE_EXT_EXTERNAL		1
+#define	CSC_DESTINATION_BASE_CS				26 : 26
+#define	CSC_DESTINATION_BASE_CS_0			0
+#define	CSC_DESTINATION_BASE_CS_1			1
+#define	CSC_DESTINATION_BASE_ADDRESS			25 : 0
+
+#define	CSC_CONTROL					0x0000FC
+#define	CSC_CONTROL_STATUS				31 : 31
+#define	CSC_CONTROL_STATUS_STOP				0
+#define	CSC_CONTROL_STATUS_START			1
+#define	CSC_CONTROL_SOURCE_FORMAT			30 : 28
+#define	CSC_CONTROL_SOURCE_FORMAT_YUV422		0
+#define	CSC_CONTROL_SOURCE_FORMAT_YUV420I		1
+#define	CSC_CONTROL_SOURCE_FORMAT_YUV420		2
+#define	CSC_CONTROL_SOURCE_FORMAT_YVU9			3
+#define	CSC_CONTROL_SOURCE_FORMAT_IYU1			4
+#define	CSC_CONTROL_SOURCE_FORMAT_IYU2			5
+#define	CSC_CONTROL_SOURCE_FORMAT_RGB565		6
+#define	CSC_CONTROL_SOURCE_FORMAT_RGB8888		7
+#define	CSC_CONTROL_DESTINATION_FORMAT			27 : 26
+#define	CSC_CONTROL_DESTINATION_FORMAT_RGB565		0
+#define	CSC_CONTROL_DESTINATION_FORMAT_RGB8888		1
+#define	CSC_CONTROL_HORIZONTAL_FILTER			25 : 25
+#define	CSC_CONTROL_HORIZONTAL_FILTER_DISABLE		0
+#define	CSC_CONTROL_HORIZONTAL_FILTER_ENABLE		1
+#define	CSC_CONTROL_VERTICAL_FILTER			24 : 24
+#define	CSC_CONTROL_VERTICAL_FILTER_DISABLE		0
+#define	CSC_CONTROL_VERTICAL_FILTER_ENABLE		1
+#define	CSC_CONTROL_BYTE_ORDER				23 : 23
+#define	CSC_CONTROL_BYTE_ORDER_YUYV			0
+#define	CSC_CONTROL_BYTE_ORDER_UYVY			1
+
+#define	DE_DATA_PORT_501				0x110000
+#define	DE_DATA_PORT_712				0x400000
+#define	DE_DATA_PORT_722				0x6000
+
+/* point to virtual Memory Map IO starting address */
+extern char *smtc_RegBaseAddress;
+/* point to virtual video memory starting address */
+extern char *smtc_VRAMBaseAddress;
+extern unsigned char smtc_de_busy;
+
+extern unsigned long memRead32(unsigned long nOffset);
+extern void memWrite32(unsigned long nOffset, unsigned long nData);
+extern unsigned long SMTC_read2Dreg(unsigned long nOffset);
+
+/* 2D functions */
+extern void deInit(unsigned int nModeWidth, unsigned int nModeHeight,
+		   unsigned int bpp);
+
+extern void deWaitForNotBusy(void);
+
+extern void deVerticalLine(unsigned long dst_base,
+	unsigned long dst_pitch,
+	unsigned long nX,
+	unsigned long nY,
+	unsigned long dst_height,
+	unsigned long nColor);
+
+extern void deHorizontalLine(unsigned long dst_base,
+	unsigned long dst_pitch,
+	unsigned long nX,
+	unsigned long nY,
+	unsigned long dst_width,
+	unsigned long nColor);
+
+extern void deLine(unsigned long dst_base,
+	unsigned long dst_pitch,
+	unsigned long nX1,
+	unsigned long nY1,
+	unsigned long nX2,
+	unsigned long nY2,
+	unsigned long nColor);
+
+extern void deFillRect(unsigned long dst_base,
+	unsigned long dst_pitch,
+	unsigned long dst_X,
+	unsigned long dst_Y,
+	unsigned long dst_width,
+	unsigned long dst_height,
+	unsigned long nColor);
+
+extern void deRotatePattern(unsigned char *pattern_dstaddr,
+	unsigned long pattern_src_addr,
+	unsigned long pattern_BPP,
+	unsigned long pattern_stride,
+	int	patternX,
+	int	patternY);
+
+extern void deCopy(unsigned long dst_base,
+	unsigned long dst_pitch,
+	unsigned long dst_BPP,
+	unsigned long dst_X,
+	unsigned long dst_Y,
+	unsigned long dst_width,
+	unsigned long dst_height,
+	unsigned long src_base,
+	unsigned long src_pitch,
+	unsigned long src_X,
+	unsigned long src_Y,
+	pTransparent	pTransp,
+	unsigned char nROP2);
+
+/*
+ * System memory to Video memory monochrome expansion.
+ *
+ * Source is monochrome image in system memory.  This function expands the
+ * monochrome data to color image in video memory.
+ *
+ * @pSrcbuf: pointer to start of source buffer in system memory
+ * @srcDelta: Pitch value (in bytes) of the source buffer, +ive means top
+ * 		down and -ive mean button up
+ * @startBit: Mono data can start at any bit in a byte, this value should
+ * 		be 0 to 7
+ * @dBase: Address of destination :  offset in frame buffer
+ * @dPitch: Pitch value of destination surface in BYTE
+ * @bpp: Color depth of destination surface
+ * @dx, dy: Starting coordinate of destination surface
+ * @width, height: width and height of rectange in pixel value
+ * @fColor,bColor: Foreground, Background color (corresponding to a 1, 0 in
+ * 	the monochrome data)
+ * @rop2: ROP value
+ */
+
+extern long deSystemMem2VideoMemMonoBlt(
+	const char *pSrcbuf,
+	long srcDelta,
+	unsigned long startBit,
+	unsigned long dBase,
+	unsigned long dPitch,
+	unsigned long bpp,
+	unsigned long dx, unsigned long dy,
+	unsigned long width, unsigned long height,
+	unsigned long fColor,
+	unsigned long bColor,
+	unsigned long rop2);
+
+extern unsigned long deGetTransparency(void);
+extern void deSetPixelFormat(unsigned long bpp);
diff --git a/drivers/staging/sm7xx/smtcfb.c b/drivers/staging/sm7xx/smtcfb.c
new file mode 100644
index 000000000000..161dbc9c1397
--- /dev/null
+++ b/drivers/staging/sm7xx/smtcfb.c
@@ -0,0 +1,1253 @@
+/*
+ * Silicon Motion SM7XX frame buffer device
+ *
+ * Copyright (C) 2006 Silicon Motion Technology Corp.
+ * Authors: Ge Wang, gewang@siliconmotion.com
+ * 	    Boyod boyod.yang@siliconmotion.com.cn
+ *
+ * Copyright (C) 2009 Lemote, Inc.
+ * Author: Wu Zhangjin, wuzj@lemote.com
+ *
+ *  This file is subject to the terms and conditions of the GNU General Public
+ *  License. See the file COPYING in the main directory of this archive for
+ *  more details.
+ *
+ * Version 0.10.26192.21.01
+ * 	- Add PowerPC/Big endian support
+ * 	- Add 2D support for Lynx
+ * 	- Verified on2.6.19.2  Boyod.yang <boyod.yang@siliconmotion.com.cn>
+ *
+ * Version 0.09.2621.00.01
+ * 	- Only support Linux Kernel's version 2.6.21.
+ *	Boyod.yang  <boyod.yang@siliconmotion.com.cn>
+ *
+ * Version 0.09
+ * 	- Only support Linux Kernel's version 2.6.12.
+ * 	Boyod.yang <boyod.yang@siliconmotion.com.cn>
+ */
+
+#ifndef __KERNEL__
+#define __KERNEL__
+#endif
+
+#include <linux/io.h>
+#include <linux/fb.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/uaccess.h>
+#include <linux/console.h>
+#include <linux/screen_info.h>
+
+#ifdef CONFIG_PM
+#include <linux/pm.h>
+#endif
+
+struct screen_info smtc_screen_info;
+
+#include "smtcfb.h"
+#include "smtc2d.h"
+
+#ifdef DEBUG
+#define smdbg(format, arg...)	printk(KERN_DEBUG format , ## arg)
+#else
+#define smdbg(format, arg...)
+#endif
+
+/*
+* Private structure
+*/
+struct smtcfb_info {
+	/*
+	 * The following is a pointer to be passed into the
+	 * functions below.  The modules outside the main
+	 * voyager.c driver have no knowledge as to what
+	 * is within this structure.
+	 */
+	struct fb_info fb;
+	struct display_switch *dispsw;
+	struct pci_dev *dev;
+	signed int currcon;
+
+	struct {
+		u8 red, green, blue;
+	} palette[NR_RGB];
+
+	u_int palette_size;
+};
+
+struct par_info {
+	/*
+	 * Hardware
+	 */
+	u16 chipID;
+	unsigned char __iomem *m_pMMIO;
+	char __iomem *m_pLFB;
+	char *m_pDPR;
+	char *m_pVPR;
+	char *m_pCPR;
+
+	u_int width;
+	u_int height;
+	u_int hz;
+	u_long BaseAddressInVRAM;
+	u8 chipRevID;
+};
+
+struct vesa_mode_table	{
+	char mode_index[6];
+	u16 lfb_width;
+	u16 lfb_height;
+	u16 lfb_depth;
+};
+
+static struct vesa_mode_table vesa_mode[] = {
+	{"0x301", 640,  480,  8},
+	{"0x303", 800,  600,  8},
+	{"0x305", 1024, 768,	8},
+	{"0x307", 1280, 1024, 8},
+
+	{"0x311", 640,  480,  16},
+	{"0x314", 800,  600,  16},
+	{"0x317", 1024, 768,	16},
+	{"0x31A", 1280, 1024, 16},
+
+	{"0x312", 640,  480,  24},
+	{"0x315", 800,  600,  24},
+	{"0x318", 1024, 768,	24},
+	{"0x31B", 1280, 1024, 24},
+};
+
+char __iomem *smtc_RegBaseAddress;	/* Memory Map IO starting address */
+char __iomem *smtc_VRAMBaseAddress;	/* video memory starting address */
+
+char *smtc_2DBaseAddress;	/* 2D engine starting address */
+char *smtc_2Ddataport;		/* 2D data port offset */
+short smtc_2Dacceleration;
+
+static u32 colreg[17];
+static struct par_info hw;	/* hardware information */
+
+u16 smtc_ChipIDs[] = {
+	0x710,
+	0x712,
+	0x720
+};
+
+#define numSMTCchipIDs (sizeof(smtc_ChipIDs) / sizeof(u16))
+
+void deWaitForNotBusy(void)
+{
+	unsigned long i = 0x1000000;
+	while (i--) {
+		if ((smtc_seqr(0x16) & 0x18) == 0x10)
+			break;
+	}
+	smtc_de_busy = 0;
+}
+
+static void sm712_set_timing(struct smtcfb_info *sfb,
+			     struct par_info *ppar_info)
+{
+	int i = 0, j = 0;
+	u32 m_nScreenStride;
+
+	smdbg("\nppar_info->width = %d ppar_info->height = %d"
+			"sfb->fb.var.bits_per_pixel = %d ppar_info->hz = %d\n",
+			ppar_info->width, ppar_info->height,
+			sfb->fb.var.bits_per_pixel, ppar_info->hz);
+
+	for (j = 0; j < numVGAModes; j++) {
+		if (VGAMode[j].mmSizeX == ppar_info->width &&
+		    VGAMode[j].mmSizeY == ppar_info->height &&
+		    VGAMode[j].bpp == sfb->fb.var.bits_per_pixel &&
+		    VGAMode[j].hz == ppar_info->hz) {
+
+			smdbg("\nVGAMode[j].mmSizeX  = %d VGAMode[j].mmSizeY ="
+					"%d VGAMode[j].bpp = %d"
+					"VGAMode[j].hz=%d\n",
+					VGAMode[j].mmSizeX, VGAMode[j].mmSizeY,
+					VGAMode[j].bpp, VGAMode[j].hz);
+
+			smdbg("VGAMode index=%d\n", j);
+
+			smtc_mmiowb(0x0, 0x3c6);
+
+			smtc_seqw(0, 0x1);
+
+			smtc_mmiowb(VGAMode[j].Init_MISC, 0x3c2);
+
+			/* init SEQ register SR00 - SR04 */
+			for (i = 0; i < SIZE_SR00_SR04; i++)
+				smtc_seqw(i, VGAMode[j].Init_SR00_SR04[i]);
+
+			/* init SEQ register SR10 - SR24 */
+			for (i = 0; i < SIZE_SR10_SR24; i++)
+				smtc_seqw(i + 0x10,
+					  VGAMode[j].Init_SR10_SR24[i]);
+
+			/* init SEQ register SR30 - SR75 */
+			for (i = 0; i < SIZE_SR30_SR75; i++)
+				if (((i + 0x30) != 0x62) \
+					&& ((i + 0x30) != 0x6a) \
+					&& ((i + 0x30) != 0x6b))
+					smtc_seqw(i + 0x30,
+						VGAMode[j].Init_SR30_SR75[i]);
+
+			/* init SEQ register SR80 - SR93 */
+			for (i = 0; i < SIZE_SR80_SR93; i++)
+				smtc_seqw(i + 0x80,
+					  VGAMode[j].Init_SR80_SR93[i]);
+
+			/* init SEQ register SRA0 - SRAF */
+			for (i = 0; i < SIZE_SRA0_SRAF; i++)
+				smtc_seqw(i + 0xa0,
+					  VGAMode[j].Init_SRA0_SRAF[i]);
+
+			/* init Graphic register GR00 - GR08 */
+			for (i = 0; i < SIZE_GR00_GR08; i++)
+				smtc_grphw(i, VGAMode[j].Init_GR00_GR08[i]);
+
+			/* init Attribute register AR00 - AR14 */
+			for (i = 0; i < SIZE_AR00_AR14; i++)
+				smtc_attrw(i, VGAMode[j].Init_AR00_AR14[i]);
+
+			/* init CRTC register CR00 - CR18 */
+			for (i = 0; i < SIZE_CR00_CR18; i++)
+				smtc_crtcw(i, VGAMode[j].Init_CR00_CR18[i]);
+
+			/* init CRTC register CR30 - CR4D */
+			for (i = 0; i < SIZE_CR30_CR4D; i++)
+				smtc_crtcw(i + 0x30,
+					   VGAMode[j].Init_CR30_CR4D[i]);
+
+			/* init CRTC register CR90 - CRA7 */
+			for (i = 0; i < SIZE_CR90_CRA7; i++)
+				smtc_crtcw(i + 0x90,
+					   VGAMode[j].Init_CR90_CRA7[i]);
+		}
+	}
+	smtc_mmiowb(0x67, 0x3c2);
+
+	/* set VPR registers */
+	writel(0x0, ppar_info->m_pVPR + 0x0C);
+	writel(0x0, ppar_info->m_pVPR + 0x40);
+
+	/* set data width */
+	m_nScreenStride =
+		(ppar_info->width * sfb->fb.var.bits_per_pixel) / 64;
+	switch (sfb->fb.var.bits_per_pixel) {
+	case 8:
+		writel(0x0, ppar_info->m_pVPR + 0x0);
+		break;
+	case 16:
+		writel(0x00020000, ppar_info->m_pVPR + 0x0);
+		break;
+	case 24:
+		writel(0x00040000, ppar_info->m_pVPR + 0x0);
+		break;
+	case 32:
+		writel(0x00030000, ppar_info->m_pVPR + 0x0);
+		break;
+	}
+	writel((u32) (((m_nScreenStride + 2) << 16) | m_nScreenStride),
+	       ppar_info->m_pVPR + 0x10);
+
+}
+
+static void sm712_setpalette(int regno, unsigned red, unsigned green,
+			     unsigned blue, struct fb_info *info)
+{
+	struct par_info *cur_par = (struct par_info *)info->par;
+
+	if (cur_par->BaseAddressInVRAM)
+		/*
+		 * second display palette for dual head. Enable CRT RAM, 6-bit
+		 * RAM
+		 */
+		smtc_seqw(0x66, (smtc_seqr(0x66) & 0xC3) | 0x20);
+	else
+		/* primary display palette. Enable LCD RAM only, 6-bit RAM */
+		smtc_seqw(0x66, (smtc_seqr(0x66) & 0xC3) | 0x10);
+	smtc_mmiowb(regno, dac_reg);
+	smtc_mmiowb(red >> 10, dac_val);
+	smtc_mmiowb(green >> 10, dac_val);
+	smtc_mmiowb(blue >> 10, dac_val);
+}
+
+static void smtc_set_timing(struct smtcfb_info *sfb, struct par_info
+		*ppar_info)
+{
+	switch (ppar_info->chipID) {
+	case 0x710:
+	case 0x712:
+	case 0x720:
+		sm712_set_timing(sfb, ppar_info);
+		break;
+	}
+}
+
+static struct fb_var_screeninfo smtcfb_var = {
+	.xres = 1024,
+	.yres = 600,
+	.xres_virtual = 1024,
+	.yres_virtual = 600,
+	.bits_per_pixel = 16,
+	.red = {16, 8, 0},
+	.green = {8, 8, 0},
+	.blue = {0, 8, 0},
+	.activate = FB_ACTIVATE_NOW,
+	.height = -1,
+	.width = -1,
+	.vmode = FB_VMODE_NONINTERLACED,
+};
+
+static struct fb_fix_screeninfo smtcfb_fix = {
+	.id = "sm712fb",
+	.type = FB_TYPE_PACKED_PIXELS,
+	.visual = FB_VISUAL_TRUECOLOR,
+	.line_length = 800 * 3,
+	.accel = FB_ACCEL_SMI_LYNX,
+};
+
+/* chan_to_field
+ *
+ * convert a colour value into a field position
+ *
+ * from pxafb.c
+ */
+
+static inline unsigned int chan_to_field(unsigned int chan,
+					 struct fb_bitfield *bf)
+{
+	chan &= 0xffff;
+	chan >>= 16 - bf->length;
+	return chan << bf->offset;
+}
+
+static int smtcfb_blank(int blank_mode, struct fb_info *info)
+{
+	/* clear DPMS setting */
+	switch (blank_mode) {
+	case FB_BLANK_UNBLANK:
+		/* Screen On: HSync: On, VSync : On */
+		smtc_seqw(0x01, (smtc_seqr(0x01) & (~0x20)));
+		smtc_seqw(0x6a, 0x16);
+		smtc_seqw(0x6b, 0x02);
+		smtc_seqw(0x21, (smtc_seqr(0x21) & 0x77));
+		smtc_seqw(0x22, (smtc_seqr(0x22) & (~0x30)));
+		smtc_seqw(0x23, (smtc_seqr(0x23) & (~0xc0)));
+		smtc_seqw(0x24, (smtc_seqr(0x24) | 0x01));
+		smtc_seqw(0x31, (smtc_seqr(0x31) | 0x03));
+		break;
+	case FB_BLANK_NORMAL:
+		/* Screen Off: HSync: On, VSync : On   Soft blank */
+		smtc_seqw(0x01, (smtc_seqr(0x01) & (~0x20)));
+		smtc_seqw(0x6a, 0x16);
+		smtc_seqw(0x6b, 0x02);
+		smtc_seqw(0x22, (smtc_seqr(0x22) & (~0x30)));
+		smtc_seqw(0x23, (smtc_seqr(0x23) & (~0xc0)));
+		smtc_seqw(0x24, (smtc_seqr(0x24) | 0x01));
+		smtc_seqw(0x31, ((smtc_seqr(0x31) & (~0x07)) | 0x00));
+		break;
+	case FB_BLANK_VSYNC_SUSPEND:
+		/* Screen On: HSync: On, VSync : Off */
+		smtc_seqw(0x01, (smtc_seqr(0x01) | 0x20));
+		smtc_seqw(0x20, (smtc_seqr(0x20) & (~0xB0)));
+		smtc_seqw(0x6a, 0x0c);
+		smtc_seqw(0x6b, 0x02);
+		smtc_seqw(0x21, (smtc_seqr(0x21) | 0x88));
+		smtc_seqw(0x22, ((smtc_seqr(0x22) & (~0x30)) | 0x20));
+		smtc_seqw(0x23, ((smtc_seqr(0x23) & (~0xc0)) | 0x20));
+		smtc_seqw(0x24, (smtc_seqr(0x24) & (~0x01)));
+		smtc_seqw(0x31, ((smtc_seqr(0x31) & (~0x07)) | 0x00));
+		smtc_seqw(0x34, (smtc_seqr(0x34) | 0x80));
+		break;
+	case FB_BLANK_HSYNC_SUSPEND:
+		/* Screen On: HSync: Off, VSync : On */
+		smtc_seqw(0x01, (smtc_seqr(0x01) | 0x20));
+		smtc_seqw(0x20, (smtc_seqr(0x20) & (~0xB0)));
+		smtc_seqw(0x6a, 0x0c);
+		smtc_seqw(0x6b, 0x02);
+		smtc_seqw(0x21, (smtc_seqr(0x21) | 0x88));
+		smtc_seqw(0x22, ((smtc_seqr(0x22) & (~0x30)) | 0x10));
+		smtc_seqw(0x23, ((smtc_seqr(0x23) & (~0xc0)) | 0xD8));
+		smtc_seqw(0x24, (smtc_seqr(0x24) & (~0x01)));
+		smtc_seqw(0x31, ((smtc_seqr(0x31) & (~0x07)) | 0x00));
+		smtc_seqw(0x34, (smtc_seqr(0x34) | 0x80));
+		break;
+	case FB_BLANK_POWERDOWN:
+		/* Screen On: HSync: Off, VSync : Off */
+		smtc_seqw(0x01, (smtc_seqr(0x01) | 0x20));
+		smtc_seqw(0x20, (smtc_seqr(0x20) & (~0xB0)));
+		smtc_seqw(0x6a, 0x0c);
+		smtc_seqw(0x6b, 0x02);
+		smtc_seqw(0x21, (smtc_seqr(0x21) | 0x88));
+		smtc_seqw(0x22, ((smtc_seqr(0x22) & (~0x30)) | 0x30));
+		smtc_seqw(0x23, ((smtc_seqr(0x23) & (~0xc0)) | 0xD8));
+		smtc_seqw(0x24, (smtc_seqr(0x24) & (~0x01)));
+		smtc_seqw(0x31, ((smtc_seqr(0x31) & (~0x07)) | 0x00));
+		smtc_seqw(0x34, (smtc_seqr(0x34) | 0x80));
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int smtc_setcolreg(unsigned regno, unsigned red, unsigned green,
+			  unsigned blue, unsigned trans, struct fb_info *info)
+{
+	struct smtcfb_info *sfb = (struct smtcfb_info *)info;
+	u32 val;
+
+	if (regno > 255)
+		return 1;
+
+	switch (sfb->fb.fix.visual) {
+	case FB_VISUAL_DIRECTCOLOR:
+	case FB_VISUAL_TRUECOLOR:
+		/*
+		 * 16/32 bit true-colour, use pseuo-palette for 16 base color
+		 */
+		if (regno < 16) {
+			if (sfb->fb.var.bits_per_pixel == 16) {
+				u32 *pal = sfb->fb.pseudo_palette;
+				val = chan_to_field(red, &sfb->fb.var.red);
+				val |= chan_to_field(green, \
+						&sfb->fb.var.green);
+				val |= chan_to_field(blue, &sfb->fb.var.blue);
+#ifdef __BIG_ENDIAN
+				pal[regno] =
+				    ((red & 0xf800) >> 8) |
+				    ((green & 0xe000) >> 13) |
+				    ((green & 0x1c00) << 3) |
+				    ((blue & 0xf800) >> 3);
+#else
+				pal[regno] = val;
+#endif
+			} else {
+				u32 *pal = sfb->fb.pseudo_palette;
+				val = chan_to_field(red, &sfb->fb.var.red);
+				val |= chan_to_field(green, \
+						&sfb->fb.var.green);
+				val |= chan_to_field(blue, &sfb->fb.var.blue);
+#ifdef __BIG_ENDIAN
+				val =
+				    (val & 0xff00ff00 >> 8) |
+				    (val & 0x00ff00ff << 8);
+#endif
+				pal[regno] = val;
+			}
+		}
+		break;
+
+	case FB_VISUAL_PSEUDOCOLOR:
+		/* color depth 8 bit */
+		sm712_setpalette(regno, red, green, blue, info);
+		break;
+
+	default:
+		return 1;	/* unknown type */
+	}
+
+	return 0;
+
+}
+
+#ifdef __BIG_ENDIAN
+static ssize_t smtcfb_read(struct fb_info *info, char __user * buf, size_t
+				count, loff_t *ppos)
+{
+	unsigned long p = *ppos;
+
+	u32 *buffer, *dst;
+	u32 __iomem *src;
+	int c, i, cnt = 0, err = 0;
+	unsigned long total_size;
+
+	if (!info || !info->screen_base)
+		return -ENODEV;
+
+	if (info->state != FBINFO_STATE_RUNNING)
+		return -EPERM;
+
+	total_size = info->screen_size;
+
+	if (total_size == 0)
+		total_size = info->fix.smem_len;
+
+	if (p >= total_size)
+		return 0;
+
+	if (count >= total_size)
+		count = total_size;
+
+	if (count + p > total_size)
+		count = total_size - p;
+
+	buffer = kmalloc((count > PAGE_SIZE) ? PAGE_SIZE : count, GFP_KERNEL);
+	if (!buffer)
+		return -ENOMEM;
+
+	src = (u32 __iomem *) (info->screen_base + p);
+
+	if (info->fbops->fb_sync)
+		info->fbops->fb_sync(info);
+
+	while (count) {
+		c = (count > PAGE_SIZE) ? PAGE_SIZE : count;
+		dst = buffer;
+		for (i = c >> 2; i--;) {
+			*dst = fb_readl(src++);
+			*dst =
+			    (*dst & 0xff00ff00 >> 8) |
+			    (*dst & 0x00ff00ff << 8);
+			dst++;
+		}
+		if (c & 3) {
+			u8 *dst8 = (u8 *) dst;
+			u8 __iomem *src8 = (u8 __iomem *) src;
+
+			for (i = c & 3; i--;) {
+				if (i & 1) {
+					*dst8++ = fb_readb(++src8);
+				} else {
+					*dst8++ = fb_readb(--src8);
+					src8 += 2;
+				}
+			}
+			src = (u32 __iomem *) src8;
+		}
+
+		if (copy_to_user(buf, buffer, c)) {
+			err = -EFAULT;
+			break;
+		}
+		*ppos += c;
+		buf += c;
+		cnt += c;
+		count -= c;
+	}
+
+	kfree(buffer);
+
+	return (err) ? err : cnt;
+}
+
+static ssize_t
+smtcfb_write(struct fb_info *info, const char __user *buf, size_t count,
+	     loff_t *ppos)
+{
+	unsigned long p = *ppos;
+
+	u32 *buffer, *src;
+	u32 __iomem *dst;
+	int c, i, cnt = 0, err = 0;
+	unsigned long total_size;
+
+	if (!info || !info->screen_base)
+		return -ENODEV;
+
+	if (info->state != FBINFO_STATE_RUNNING)
+		return -EPERM;
+
+	total_size = info->screen_size;
+
+	if (total_size == 0)
+		total_size = info->fix.smem_len;
+
+	if (p > total_size)
+		return -EFBIG;
+
+	if (count > total_size) {
+		err = -EFBIG;
+		count = total_size;
+	}
+
+	if (count + p > total_size) {
+		if (!err)
+			err = -ENOSPC;
+
+		count = total_size - p;
+	}
+
+	buffer = kmalloc((count > PAGE_SIZE) ? PAGE_SIZE : count, GFP_KERNEL);
+	if (!buffer)
+		return -ENOMEM;
+
+	dst = (u32 __iomem *) (info->screen_base + p);
+
+	if (info->fbops->fb_sync)
+		info->fbops->fb_sync(info);
+
+	while (count) {
+		c = (count > PAGE_SIZE) ? PAGE_SIZE : count;
+		src = buffer;
+
+		if (copy_from_user(src, buf, c)) {
+			err = -EFAULT;
+			break;
+		}
+
+		for (i = c >> 2; i--;) {
+			fb_writel((*src & 0xff00ff00 >> 8) |
+				  (*src & 0x00ff00ff << 8), dst++);
+			src++;
+		}
+		if (c & 3) {
+			u8 *src8 = (u8 *) src;
+			u8 __iomem *dst8 = (u8 __iomem *) dst;
+
+			for (i = c & 3; i--;) {
+				if (i & 1) {
+					fb_writeb(*src8++, ++dst8);
+				} else {
+					fb_writeb(*src8++, --dst8);
+					dst8 += 2;
+				}
+			}
+			dst = (u32 __iomem *) dst8;
+		}
+
+		*ppos += c;
+		buf += c;
+		cnt += c;
+		count -= c;
+	}
+
+	kfree(buffer);
+
+	return (cnt) ? cnt : err;
+}
+#endif	/* ! __BIG_ENDIAN */
+
+#include "smtc2d.c"
+
+void smtcfb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
+{
+	struct par_info *p = (struct par_info *)info->par;
+
+	if (smtc_2Dacceleration) {
+		if (!area->width || !area->height)
+			return;
+
+		deCopy(p->BaseAddressInVRAM, 0, info->var.bits_per_pixel,
+		       area->dx, area->dy, area->width, area->height,
+		       p->BaseAddressInVRAM, 0, area->sx, area->sy, 0, 0xC);
+
+	} else
+		cfb_copyarea(info, area);
+}
+
+void smtcfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
+{
+	struct par_info *p = (struct par_info *)info->par;
+
+	if (smtc_2Dacceleration) {
+		if (!rect->width || !rect->height)
+			return;
+		if (info->var.bits_per_pixel >= 24)
+			deFillRect(p->BaseAddressInVRAM, 0, rect->dx * 3,
+				   rect->dy * 3, rect->width * 3, rect->height,
+				   rect->color);
+		else
+			deFillRect(p->BaseAddressInVRAM, 0, rect->dx, rect->dy,
+				   rect->width, rect->height, rect->color);
+	} else
+		cfb_fillrect(info, rect);
+}
+
+void smtcfb_imageblit(struct fb_info *info, const struct fb_image *image)
+{
+	struct par_info *p = (struct par_info *)info->par;
+	u32 bg_col = 0, fg_col = 0;
+
+	if ((smtc_2Dacceleration) && (image->depth == 1)) {
+		if (smtc_de_busy)
+			deWaitForNotBusy();
+
+		switch (info->var.bits_per_pixel) {
+		case 8:
+			bg_col = image->bg_color;
+			fg_col = image->fg_color;
+			break;
+		case 16:
+			bg_col =
+			    ((u32 *) (info->pseudo_palette))[image->bg_color];
+			fg_col =
+			    ((u32 *) (info->pseudo_palette))[image->fg_color];
+			break;
+		case 32:
+			bg_col =
+			    ((u32 *) (info->pseudo_palette))[image->bg_color];
+			fg_col =
+			    ((u32 *) (info->pseudo_palette))[image->fg_color];
+			break;
+		}
+
+		deSystemMem2VideoMemMonoBlt(
+			image->data,
+			image->width / 8,
+			0,
+			p->BaseAddressInVRAM,
+			0,
+			0,
+			image->dx, image->dy,
+			image->width, image->height,
+			fg_col, bg_col,
+			0x0C);
+
+	} else
+		cfb_imageblit(info, image);
+}
+
+static struct fb_ops smtcfb_ops = {
+	.owner = THIS_MODULE,
+	.fb_setcolreg = smtc_setcolreg,
+	.fb_blank = smtcfb_blank,
+	.fb_fillrect = smtcfb_fillrect,
+	.fb_imageblit = smtcfb_imageblit,
+	.fb_copyarea = smtcfb_copyarea,
+#ifdef __BIG_ENDIAN
+	.fb_read = smtcfb_read,
+	.fb_write = smtcfb_write,
+#endif
+
+};
+
+void smtcfb_setmode(struct smtcfb_info *sfb)
+{
+	switch (sfb->fb.var.bits_per_pixel) {
+	case 32:
+		sfb->fb.fix.visual = FB_VISUAL_TRUECOLOR;
+		sfb->fb.fix.line_length = sfb->fb.var.xres * 4;
+		sfb->fb.var.red.length = 8;
+		sfb->fb.var.green.length = 8;
+		sfb->fb.var.blue.length = 8;
+		sfb->fb.var.red.offset = 16;
+		sfb->fb.var.green.offset = 8;
+		sfb->fb.var.blue.offset = 0;
+
+		break;
+	case 8:
+		sfb->fb.fix.visual = FB_VISUAL_PSEUDOCOLOR;
+		sfb->fb.fix.line_length = sfb->fb.var.xres;
+		sfb->fb.var.red.offset = 5;
+		sfb->fb.var.red.length = 3;
+		sfb->fb.var.green.offset = 2;
+		sfb->fb.var.green.length = 3;
+		sfb->fb.var.blue.offset = 0;
+		sfb->fb.var.blue.length = 2;
+		break;
+	case 24:
+		sfb->fb.fix.visual = FB_VISUAL_TRUECOLOR;
+		sfb->fb.fix.line_length = sfb->fb.var.xres * 3;
+		sfb->fb.var.red.length = 8;
+		sfb->fb.var.green.length = 8;
+		sfb->fb.var.blue.length = 8;
+
+		sfb->fb.var.red.offset = 16;
+		sfb->fb.var.green.offset = 8;
+		sfb->fb.var.blue.offset = 0;
+
+		break;
+	case 16:
+	default:
+		sfb->fb.fix.visual = FB_VISUAL_TRUECOLOR;
+		sfb->fb.fix.line_length = sfb->fb.var.xres * 2;
+
+		sfb->fb.var.red.length = 5;
+		sfb->fb.var.green.length = 6;
+		sfb->fb.var.blue.length = 5;
+
+		sfb->fb.var.red.offset = 11;
+		sfb->fb.var.green.offset = 5;
+		sfb->fb.var.blue.offset = 0;
+
+		break;
+	}
+
+	hw.width = sfb->fb.var.xres;
+	hw.height = sfb->fb.var.yres;
+	hw.hz = 60;
+	smtc_set_timing(sfb, &hw);
+	if (smtc_2Dacceleration) {
+		printk("2D acceleration enabled!\n");
+		/* Init smtc drawing engine */
+		deInit(sfb->fb.var.xres, sfb->fb.var.yres,
+				sfb->fb.var.bits_per_pixel);
+	}
+}
+
+/*
+ * Alloc struct smtcfb_info and assign the default value
+ */
+static struct smtcfb_info *smtc_alloc_fb_info(struct pci_dev *dev,
+							char *name)
+{
+	struct smtcfb_info *sfb;
+
+	sfb = kmalloc(sizeof(struct smtcfb_info), GFP_KERNEL);
+
+	if (!sfb)
+		return NULL;
+
+	memset(sfb, 0, sizeof(struct smtcfb_info));
+
+	sfb->currcon = -1;
+	sfb->dev = dev;
+
+	/*** Init sfb->fb with default value ***/
+	sfb->fb.flags = FBINFO_FLAG_DEFAULT;
+	sfb->fb.fbops = &smtcfb_ops;
+	sfb->fb.var = smtcfb_var;
+	sfb->fb.fix = smtcfb_fix;
+
+	strcpy(sfb->fb.fix.id, name);
+
+	sfb->fb.fix.type = FB_TYPE_PACKED_PIXELS;
+	sfb->fb.fix.type_aux = 0;
+	sfb->fb.fix.xpanstep = 0;
+	sfb->fb.fix.ypanstep = 0;
+	sfb->fb.fix.ywrapstep = 0;
+	sfb->fb.fix.accel = FB_ACCEL_SMI_LYNX;
+
+	sfb->fb.var.nonstd = 0;
+	sfb->fb.var.activate = FB_ACTIVATE_NOW;
+	sfb->fb.var.height = -1;
+	sfb->fb.var.width = -1;
+	/* text mode acceleration */
+	sfb->fb.var.accel_flags = FB_ACCELF_TEXT;
+	sfb->fb.var.vmode = FB_VMODE_NONINTERLACED;
+	sfb->fb.par = &hw;
+	sfb->fb.pseudo_palette = colreg;
+
+	return sfb;
+}
+
+/*
+ * Unmap in the memory mapped IO registers
+ */
+
+static void smtc_unmap_mmio(struct smtcfb_info *sfb)
+{
+	if (sfb && smtc_RegBaseAddress)
+		smtc_RegBaseAddress = NULL;
+}
+
+/*
+ * Map in the screen memory
+ */
+
+static int smtc_map_smem(struct smtcfb_info *sfb,
+		struct pci_dev *dev, u_long smem_len)
+{
+	if (sfb->fb.var.bits_per_pixel == 32) {
+#ifdef __BIG_ENDIAN
+		sfb->fb.fix.smem_start = pci_resource_start(dev, 0)
+			+ 0x800000;
+#else
+		sfb->fb.fix.smem_start = pci_resource_start(dev, 0);
+#endif
+	} else {
+		sfb->fb.fix.smem_start = pci_resource_start(dev, 0);
+	}
+
+	sfb->fb.fix.smem_len = smem_len;
+
+	sfb->fb.screen_base = smtc_VRAMBaseAddress;
+
+	if (!sfb->fb.screen_base) {
+		printk(KERN_INFO "%s: unable to map screen memory\n",
+				sfb->fb.fix.id);
+		return -ENOMEM;
+	}
+
+	return 0;
+}
+
+/*
+ * Unmap in the screen memory
+ *
+ */
+static void smtc_unmap_smem(struct smtcfb_info *sfb)
+{
+	if (sfb && sfb->fb.screen_base) {
+		iounmap(sfb->fb.screen_base);
+		sfb->fb.screen_base = NULL;
+	}
+}
+
+/*
+ * We need to wake up the LynxEM+, and make sure its in linear memory mode.
+ */
+static inline void sm7xx_init_hw(void)
+{
+	outb_p(0x18, 0x3c4);
+	outb_p(0x11, 0x3c5);
+}
+
+static void smtc_free_fb_info(struct smtcfb_info *sfb)
+{
+	if (sfb) {
+		fb_alloc_cmap(&sfb->fb.cmap, 0, 0);
+		kfree(sfb);
+	}
+}
+
+/*
+ *	sm712vga_setup - process command line options, get vga parameter
+ *	@options: string of options
+ *	Returns zero.
+ *
+ */
+static int __init __maybe_unused sm712vga_setup(char *options)
+{
+	int index;
+
+	if (!options || !*options) {
+		smdbg("\n No vga parameter\n");
+		return -EINVAL;
+	}
+
+	smtc_screen_info.lfb_width = 0;
+	smtc_screen_info.lfb_height = 0;
+	smtc_screen_info.lfb_depth = 0;
+
+	smdbg("\nsm712vga_setup = %s\n", options);
+
+	for (index = 0;
+	     index < (sizeof(vesa_mode) / sizeof(struct vesa_mode_table));
+	     index++) {
+		if (strstr(options, vesa_mode[index].mode_index)) {
+			smtc_screen_info.lfb_width = vesa_mode[index].lfb_width;
+			smtc_screen_info.lfb_height =
+					vesa_mode[index].lfb_height;
+			smtc_screen_info.lfb_depth = vesa_mode[index].lfb_depth;
+			return 0;
+		}
+	}
+
+	return -1;
+}
+__setup("vga=", sm712vga_setup);
+
+/* Jason (08/13/2009)
+ * Original init function changed to probe method to be used by pci_drv
+ * process used to detect chips replaced with kernel process in pci_drv
+ */
+static int __init smtcfb_pci_probe(struct pci_dev *pdev,
+				   const struct pci_device_id *ent)
+{
+	struct smtcfb_info *sfb;
+	u_long smem_size = 0x00800000;	/* default 8MB */
+	char name[16];
+	int err;
+	unsigned long pFramebufferPhysical;
+
+	printk(KERN_INFO
+		"Silicon Motion display driver " SMTC_LINUX_FB_VERSION "\n");
+
+	err = pci_enable_device(pdev);	/* enable SMTC chip */
+
+	if (err)
+		return err;
+	err = -ENOMEM;
+
+	hw.chipID = ent->device;
+	sprintf(name, "sm%Xfb", hw.chipID);
+
+	sfb = smtc_alloc_fb_info(pdev, name);
+
+	if (!sfb)
+		goto failed;
+	/* Jason (08/13/2009)
+	 * Store fb_info to be further used when suspending and resuming
+	 */
+	pci_set_drvdata(pdev, sfb);
+
+	sm7xx_init_hw();
+
+	/*get mode parameter from smtc_screen_info */
+	if (smtc_screen_info.lfb_width != 0) {
+		sfb->fb.var.xres = smtc_screen_info.lfb_width;
+		sfb->fb.var.yres = smtc_screen_info.lfb_height;
+		sfb->fb.var.bits_per_pixel = smtc_screen_info.lfb_depth;
+	} else {
+		/* default resolution 1024x600 16bit mode */
+		sfb->fb.var.xres = SCREEN_X_RES;
+		sfb->fb.var.yres = SCREEN_Y_RES;
+		sfb->fb.var.bits_per_pixel = SCREEN_BPP;
+	}
+
+#ifdef __BIG_ENDIAN
+	if (sfb->fb.var.bits_per_pixel == 24)
+		sfb->fb.var.bits_per_pixel = (smtc_screen_info.lfb_depth = 32);
+#endif
+	/* Map address and memory detection */
+	pFramebufferPhysical = pci_resource_start(pdev, 0);
+	pci_read_config_byte(pdev, PCI_REVISION_ID, &hw.chipRevID);
+
+	switch (hw.chipID) {
+	case 0x710:
+	case 0x712:
+		sfb->fb.fix.mmio_start = pFramebufferPhysical + 0x00400000;
+		sfb->fb.fix.mmio_len = 0x00400000;
+		smem_size = SM712_VIDEOMEMORYSIZE;
+#ifdef __BIG_ENDIAN
+		hw.m_pLFB = (smtc_VRAMBaseAddress =
+		    ioremap(pFramebufferPhysical, 0x00c00000));
+#else
+		hw.m_pLFB = (smtc_VRAMBaseAddress =
+		    ioremap(pFramebufferPhysical, 0x00800000));
+#endif
+		hw.m_pMMIO = (smtc_RegBaseAddress =
+		    smtc_VRAMBaseAddress + 0x00700000);
+		smtc_2DBaseAddress = (hw.m_pDPR =
+		    smtc_VRAMBaseAddress + 0x00408000);
+		smtc_2Ddataport = smtc_VRAMBaseAddress + DE_DATA_PORT_712;
+		hw.m_pVPR = hw.m_pLFB + 0x0040c000;
+#ifdef __BIG_ENDIAN
+		if (sfb->fb.var.bits_per_pixel == 32) {
+			smtc_VRAMBaseAddress += 0x800000;
+			hw.m_pLFB += 0x800000;
+			printk(KERN_INFO
+				"\nsmtc_VRAMBaseAddress=%p hw.m_pLFB=%p\n",
+					smtc_VRAMBaseAddress, hw.m_pLFB);
+		}
+#endif
+		if (!smtc_RegBaseAddress) {
+			printk(KERN_INFO
+				"%s: unable to map memory mapped IO\n",
+				sfb->fb.fix.id);
+			return -ENOMEM;
+		}
+
+		/* set MCLK = 14.31818 * (0x16 / 0x2) */
+		smtc_seqw(0x6a, 0x16);
+		smtc_seqw(0x6b, 0x02);
+		smtc_seqw(0x62, 0x3e);
+		/* enable PCI burst */
+		smtc_seqw(0x17, 0x20);
+		/* enable word swap */
+#ifdef __BIG_ENDIAN
+		if (sfb->fb.var.bits_per_pixel == 32)
+			smtc_seqw(0x17, 0x30);
+#endif
+#ifdef CONFIG_FB_SM7XX_ACCEL
+		smtc_2Dacceleration = 1;
+#endif
+		break;
+	case 0x720:
+		sfb->fb.fix.mmio_start = pFramebufferPhysical;
+		sfb->fb.fix.mmio_len = 0x00200000;
+		smem_size = SM722_VIDEOMEMORYSIZE;
+		smtc_2DBaseAddress = (hw.m_pDPR =
+		    ioremap(pFramebufferPhysical, 0x00a00000));
+		hw.m_pLFB = (smtc_VRAMBaseAddress =
+		    smtc_2DBaseAddress + 0x00200000);
+		hw.m_pMMIO = (smtc_RegBaseAddress =
+		    smtc_2DBaseAddress + 0x000c0000);
+		smtc_2Ddataport = smtc_2DBaseAddress + DE_DATA_PORT_722;
+		hw.m_pVPR = smtc_2DBaseAddress + 0x800;
+
+		smtc_seqw(0x62, 0xff);
+		smtc_seqw(0x6a, 0x0d);
+		smtc_seqw(0x6b, 0x02);
+		smtc_2Dacceleration = 0;
+		break;
+	default:
+		printk(KERN_INFO
+		"No valid Silicon Motion display chip was detected!\n");
+
+		smtc_free_fb_info(sfb);
+		return err;
+	}
+
+	/* can support 32 bpp */
+	if (15 == sfb->fb.var.bits_per_pixel)
+		sfb->fb.var.bits_per_pixel = 16;
+
+	sfb->fb.var.xres_virtual = sfb->fb.var.xres;
+	sfb->fb.var.yres_virtual = sfb->fb.var.yres;
+	err = smtc_map_smem(sfb, pdev, smem_size);
+	if (err)
+		goto failed;
+
+	smtcfb_setmode(sfb);
+	/* Primary display starting from 0 postion */
+	hw.BaseAddressInVRAM = 0;
+	sfb->fb.par = &hw;
+
+	err = register_framebuffer(&sfb->fb);
+	if (err < 0)
+		goto failed;
+
+	printk(KERN_INFO "Silicon Motion SM%X Rev%X primary display mode"
+			"%dx%d-%d Init Complete.\n", hw.chipID, hw.chipRevID,
+			sfb->fb.var.xres, sfb->fb.var.yres,
+			sfb->fb.var.bits_per_pixel);
+
+	return 0;
+
+ failed:
+	printk(KERN_INFO "Silicon Motion, Inc.  primary display init fail\n");
+
+	smtc_unmap_smem(sfb);
+	smtc_unmap_mmio(sfb);
+	smtc_free_fb_info(sfb);
+
+	return err;
+}
+
+
+/* Jason (08/11/2009) PCI_DRV wrapper essential structs */
+static struct pci_device_id smtcfb_pci_table[] = {
+	{0x126f, 0x710, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+	{0x126f, 0x712, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+	{0x126f, 0x720, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+	{0,}
+};
+
+
+/* Jason (08/14/2009)
+ * do some clean up when the driver module is removed
+ */
+static void __devexit smtcfb_pci_remove(struct pci_dev *pdev)
+{
+	struct smtcfb_info *sfb;
+
+	sfb = pci_get_drvdata(pdev);
+	pci_set_drvdata(pdev, NULL);
+	smtc_unmap_smem(sfb);
+	smtc_unmap_mmio(sfb);
+	unregister_framebuffer(&sfb->fb);
+	smtc_free_fb_info(sfb);
+}
+
+/* Jason (08/14/2009)
+ * suspend function, called when the suspend event is triggered
+ */
+static int __maybe_unused smtcfb_suspend(struct pci_dev *pdev, pm_message_t msg)
+{
+	struct smtcfb_info *sfb;
+	int retv;
+
+	sfb = pci_get_drvdata(pdev);
+
+	/* set the hw in sleep mode use externel clock and self memory refresh
+	 * so that we can turn off internal PLLs later on
+	 */
+	smtc_seqw(0x20, (smtc_seqr(0x20) | 0xc0));
+	smtc_seqw(0x69, (smtc_seqr(0x69) & 0xf7));
+
+	switch (msg.event) {
+	case PM_EVENT_FREEZE:
+	case PM_EVENT_PRETHAW:
+		pdev->dev.power.power_state = msg;
+		return 0;
+	}
+
+	/* when doing suspend, call fb apis and pci apis */
+	if (msg.event == PM_EVENT_SUSPEND) {
+		acquire_console_sem();
+		fb_set_suspend(&sfb->fb, 1);
+		release_console_sem();
+		retv = pci_save_state(pdev);
+		pci_disable_device(pdev);
+		retv = pci_choose_state(pdev, msg);
+		retv = pci_set_power_state(pdev, retv);
+	}
+
+	pdev->dev.power.power_state = msg;
+
+	/* additionaly turn off all function blocks including internal PLLs */
+	smtc_seqw(0x21, 0xff);
+
+	return 0;
+}
+
+static int __maybe_unused smtcfb_resume(struct pci_dev *pdev)
+{
+	struct smtcfb_info *sfb;
+	int retv;
+
+	sfb = pci_get_drvdata(pdev);
+
+	/* when resuming, restore pci data and fb cursor */
+	if (pdev->dev.power.power_state.event != PM_EVENT_FREEZE) {
+		retv = pci_set_power_state(pdev, PCI_D0);
+		retv = pci_restore_state(pdev);
+		if (pci_enable_device(pdev))
+			return -1;
+		pci_set_master(pdev);
+	}
+
+	/* reinit hardware */
+	sm7xx_init_hw();
+	switch (hw.chipID) {
+	case 0x710:
+	case 0x712:
+		/* set MCLK = 14.31818 *  (0x16 / 0x2) */
+		smtc_seqw(0x6a, 0x16);
+		smtc_seqw(0x6b, 0x02);
+		smtc_seqw(0x62, 0x3e);
+		/* enable PCI burst */
+		smtc_seqw(0x17, 0x20);
+#ifdef __BIG_ENDIAN
+		if (sfb->fb.var.bits_per_pixel == 32)
+			smtc_seqw(0x17, 0x30);
+#endif
+		break;
+	case 0x720:
+		smtc_seqw(0x62, 0xff);
+		smtc_seqw(0x6a, 0x0d);
+		smtc_seqw(0x6b, 0x02);
+		break;
+	}
+
+	smtc_seqw(0x34, (smtc_seqr(0x34) | 0xc0));
+	smtc_seqw(0x33, ((smtc_seqr(0x33) | 0x08) & 0xfb));
+
+	smtcfb_setmode(sfb);
+
+	acquire_console_sem();
+	fb_set_suspend(&sfb->fb, 0);
+	release_console_sem();
+
+	return 0;
+}
+
+/* Jason (08/13/2009)
+ * pci_driver struct used to wrap the original driver
+ * so that it can be registered into the kernel and
+ * the proper method would be called when suspending and resuming
+ */
+static struct pci_driver smtcfb_driver = {
+	.name = "smtcfb",
+	.id_table = smtcfb_pci_table,
+	.probe = smtcfb_pci_probe,
+	.remove = __devexit_p(smtcfb_pci_remove),
+#ifdef CONFIG_PM
+	.suspend = smtcfb_suspend,
+	.resume = smtcfb_resume,
+#endif
+};
+
+static int __init smtcfb_init(void)
+{
+	return pci_register_driver(&smtcfb_driver);
+}
+
+static void __exit smtcfb_exit(void)
+{
+	pci_unregister_driver(&smtcfb_driver);
+}
+
+module_init(smtcfb_init);
+module_exit(smtcfb_exit);
+
+MODULE_AUTHOR("Siliconmotion ");
+MODULE_DESCRIPTION("Framebuffer driver for SMI Graphic Cards");
+MODULE_LICENSE("GPL");
diff --git a/drivers/staging/sm7xx/smtcfb.h b/drivers/staging/sm7xx/smtcfb.h
new file mode 100644
index 000000000000..7f2c34138215
--- /dev/null
+++ b/drivers/staging/sm7xx/smtcfb.h
@@ -0,0 +1,793 @@
+/*
+ * Silicon Motion SM712 frame buffer device
+ *
+ * Copyright (C) 2006 Silicon Motion Technology Corp.
+ * Authors:	Ge Wang, gewang@siliconmotion.com
+ *	 	Boyod boyod.yang@siliconmotion.com.cn
+ *
+ * Copyright (C) 2009 Lemote, Inc.
+ * Author: Wu Zhangjin, wuzj@lemote.com
+ *
+ *  This file is subject to the terms and conditions of the GNU General Public
+ *  License. See the file COPYING in the main directory of this archive for
+ *  more details.
+ */
+
+#define SMTC_LINUX_FB_VERSION	"version 0.11.2619.21.01 July 27, 2008"
+
+#define NR_PALETTE        256
+#define NR_RGB            2
+
+#define FB_ACCEL_SMI_LYNX 88
+
+#ifdef __BIG_ENDIAN
+#define PC_VGA            0
+#else
+#define PC_VGA            1
+#endif
+
+#define SCREEN_X_RES      1024
+#define SCREEN_Y_RES      600
+#define SCREEN_BPP        16
+
+#ifndef FIELD_OFFSET
+#define FIELD_OFSFET(type, field) \
+	((unsigned long) (PUCHAR) & (((type *)0)->field))
+#endif
+
+/*Assume SM712 graphics chip has 4MB VRAM */
+#define SM712_VIDEOMEMORYSIZE	  0x00400000
+/*Assume SM722 graphics chip has 8MB VRAM */
+#define SM722_VIDEOMEMORYSIZE	  0x00800000
+
+#define dac_reg	(0x3c8)
+#define dac_val	(0x3c9)
+
+extern char *smtc_RegBaseAddress;
+#define smtc_mmiowb(dat, reg)	writeb(dat, smtc_RegBaseAddress + reg)
+#define smtc_mmioww(dat, reg)	writew(dat, smtc_RegBaseAddress + reg)
+#define smtc_mmiowl(dat, reg)	writel(dat, smtc_RegBaseAddress + reg)
+
+#define smtc_mmiorb(reg)	readb(smtc_RegBaseAddress + reg)
+#define smtc_mmiorw(reg)	readw(smtc_RegBaseAddress + reg)
+#define smtc_mmiorl(reg)	readl(smtc_RegBaseAddress + reg)
+
+#define SIZE_SR00_SR04      (0x04 - 0x00 + 1)
+#define SIZE_SR10_SR24      (0x24 - 0x10 + 1)
+#define SIZE_SR30_SR75      (0x75 - 0x30 + 1)
+#define SIZE_SR80_SR93      (0x93 - 0x80 + 1)
+#define SIZE_SRA0_SRAF      (0xAF - 0xA0 + 1)
+#define SIZE_GR00_GR08      (0x08 - 0x00 + 1)
+#define SIZE_AR00_AR14      (0x14 - 0x00 + 1)
+#define SIZE_CR00_CR18      (0x18 - 0x00 + 1)
+#define SIZE_CR30_CR4D      (0x4D - 0x30 + 1)
+#define SIZE_CR90_CRA7      (0xA7 - 0x90 + 1)
+#define SIZE_VPR		(0x6C + 1)
+#define SIZE_DPR		(0x44 + 1)
+
+static inline void smtc_crtcw(int reg, int val)
+{
+	smtc_mmiowb(reg, 0x3d4);
+	smtc_mmiowb(val, 0x3d5);
+}
+
+static inline unsigned int smtc_crtcr(int reg)
+{
+	smtc_mmiowb(reg, 0x3d4);
+	return smtc_mmiorb(0x3d5);
+}
+
+static inline void smtc_grphw(int reg, int val)
+{
+	smtc_mmiowb(reg, 0x3ce);
+	smtc_mmiowb(val, 0x3cf);
+}
+
+static inline unsigned int smtc_grphr(int reg)
+{
+	smtc_mmiowb(reg, 0x3ce);
+	return smtc_mmiorb(0x3cf);
+}
+
+static inline void smtc_attrw(int reg, int val)
+{
+	smtc_mmiorb(0x3da);
+	smtc_mmiowb(reg, 0x3c0);
+	smtc_mmiorb(0x3c1);
+	smtc_mmiowb(val, 0x3c0);
+}
+
+static inline void smtc_seqw(int reg, int val)
+{
+	smtc_mmiowb(reg, 0x3c4);
+	smtc_mmiowb(val, 0x3c5);
+}
+
+static inline unsigned int smtc_seqr(int reg)
+{
+	smtc_mmiowb(reg, 0x3c4);
+	return smtc_mmiorb(0x3c5);
+}
+
+/* The next structure holds all information relevant for a specific video mode.
+ */
+
+struct ModeInit {
+	int mmSizeX;
+	int mmSizeY;
+	int bpp;
+	int hz;
+	unsigned char Init_MISC;
+	unsigned char Init_SR00_SR04[SIZE_SR00_SR04];
+	unsigned char Init_SR10_SR24[SIZE_SR10_SR24];
+	unsigned char Init_SR30_SR75[SIZE_SR30_SR75];
+	unsigned char Init_SR80_SR93[SIZE_SR80_SR93];
+	unsigned char Init_SRA0_SRAF[SIZE_SRA0_SRAF];
+	unsigned char Init_GR00_GR08[SIZE_GR00_GR08];
+	unsigned char Init_AR00_AR14[SIZE_AR00_AR14];
+	unsigned char Init_CR00_CR18[SIZE_CR00_CR18];
+	unsigned char Init_CR30_CR4D[SIZE_CR30_CR4D];
+	unsigned char Init_CR90_CRA7[SIZE_CR90_CRA7];
+};
+
+/**********************************************************************
+			 SM712 Mode table.
+ **********************************************************************/
+struct ModeInit VGAMode[] = {
+	{
+	 /*  mode#0: 640 x 480  16Bpp  60Hz */
+	 640, 480, 16, 60,
+	 /*  Init_MISC */
+	 0xE3,
+	 {			/*  Init_SR0_SR4 */
+	  0x03, 0x01, 0x0F, 0x00, 0x0E,
+	  },
+	 {			/*  Init_SR10_SR24 */
+	  0xFF, 0xBE, 0xEF, 0xFF, 0x00, 0x0E, 0x17, 0x2C,
+	  0x99, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	  0xC4, 0x30, 0x02, 0x01, 0x01,
+	  },
+	 {			/*  Init_SR30_SR75 */
+	  0x32, 0x03, 0xA0, 0x09, 0xC0, 0x32, 0x32, 0x32,
+	  0x32, 0x32, 0x32, 0x32, 0x00, 0x00, 0x03, 0xFF,
+	  0x00, 0xFC, 0x00, 0x00, 0x20, 0x18, 0x00, 0xFC,
+	  0x20, 0x0C, 0x44, 0x20, 0x00, 0x32, 0x32, 0x32,
+	  0x04, 0x24, 0x63, 0x4F, 0x52, 0x0B, 0xDF, 0xEA,
+	  0x04, 0x50, 0x19, 0x32, 0x32, 0x00, 0x00, 0x32,
+	  0x01, 0x80, 0x7E, 0x1A, 0x1A, 0x00, 0x00, 0x00,
+	  0x50, 0x03, 0x74, 0x14, 0x07, 0x82, 0x07, 0x04,
+	  0x00, 0x45, 0x30, 0x30, 0x40, 0x30,
+	  },
+	 {			/*  Init_SR80_SR93 */
+	  0xFF, 0x07, 0x00, 0x6F, 0x7F, 0x7F, 0xFF, 0x32,
+	  0xF7, 0x00, 0x00, 0x00, 0xEF, 0xFF, 0x32, 0x32,
+	  0x00, 0x00, 0x00, 0x00,
+	  },
+	 {			/*  Init_SRA0_SRAF */
+	  0x00, 0xFF, 0xBF, 0xFF, 0xFF, 0xED, 0xED, 0xED,
+	  0x7B, 0xFF, 0xFF, 0xFF, 0xBF, 0xEF, 0xFF, 0xDF,
+	  },
+	 {			/*  Init_GR00_GR08 */
+	  0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x05, 0x0F,
+	  0xFF,
+	  },
+	 {			/*  Init_AR00_AR14 */
+	  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+	  0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
+	  0x41, 0x00, 0x0F, 0x00, 0x00,
+	  },
+	 {			/*  Init_CR00_CR18 */
+	  0x5F, 0x4F, 0x4F, 0x00, 0x53, 0x1F, 0x0B, 0x3E,
+	  0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	  0xEA, 0x0C, 0xDF, 0x50, 0x40, 0xDF, 0x00, 0xE3,
+	  0xFF,
+	  },
+	 {			/*  Init_CR30_CR4D */
+	  0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0x03, 0x20,
+	  0x00, 0x00, 0x00, 0x40, 0x00, 0xE7, 0xFF, 0xFD,
+	  0x5F, 0x4F, 0x00, 0x54, 0x00, 0x0B, 0xDF, 0x00,
+	  0xEA, 0x0C, 0x2E, 0x00, 0x4F, 0xDF,
+	  },
+	 {			/*  Init_CR90_CRA7 */
+	  0x56, 0xDD, 0x5E, 0xEA, 0x87, 0x44, 0x8F, 0x55,
+	  0x0A, 0x8F, 0x55, 0x0A, 0x00, 0x00, 0x18, 0x00,
+	  0x11, 0x10, 0x0B, 0x0A, 0x0A, 0x0A, 0x0A, 0x00,
+	  },
+	 },
+	{
+	 /*  mode#1: 640 x 480  24Bpp  60Hz */
+	 640, 480, 24, 60,
+	 /*  Init_MISC */
+	 0xE3,
+	 {			/*  Init_SR0_SR4 */
+	  0x03, 0x01, 0x0F, 0x00, 0x0E,
+	  },
+	 {			/*  Init_SR10_SR24 */
+	  0xFF, 0xBE, 0xEF, 0xFF, 0x00, 0x0E, 0x17, 0x2C,
+	  0x99, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	  0xC4, 0x30, 0x02, 0x01, 0x01,
+	  },
+	 {			/*  Init_SR30_SR75 */
+	  0x32, 0x03, 0xA0, 0x09, 0xC0, 0x32, 0x32, 0x32,
+	  0x32, 0x32, 0x32, 0x32, 0x00, 0x00, 0x03, 0xFF,
+	  0x00, 0xFC, 0x00, 0x00, 0x20, 0x18, 0x00, 0xFC,
+	  0x20, 0x0C, 0x44, 0x20, 0x00, 0x32, 0x32, 0x32,
+	  0x04, 0x24, 0x63, 0x4F, 0x52, 0x0B, 0xDF, 0xEA,
+	  0x04, 0x50, 0x19, 0x32, 0x32, 0x00, 0x00, 0x32,
+	  0x01, 0x80, 0x7E, 0x1A, 0x1A, 0x00, 0x00, 0x00,
+	  0x50, 0x03, 0x74, 0x14, 0x07, 0x82, 0x07, 0x04,
+	  0x00, 0x45, 0x30, 0x30, 0x40, 0x30,
+	  },
+	 {			/*  Init_SR80_SR93 */
+	  0xFF, 0x07, 0x00, 0x6F, 0x7F, 0x7F, 0xFF, 0x32,
+	  0xF7, 0x00, 0x00, 0x00, 0xEF, 0xFF, 0x32, 0x32,
+	  0x00, 0x00, 0x00, 0x00,
+	  },
+	 {			/*  Init_SRA0_SRAF */
+	  0x00, 0xFF, 0xBF, 0xFF, 0xFF, 0xED, 0xED, 0xED,
+	  0x7B, 0xFF, 0xFF, 0xFF, 0xBF, 0xEF, 0xFF, 0xDF,
+	  },
+	 {			/*  Init_GR00_GR08 */
+	  0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x05, 0x0F,
+	  0xFF,
+	  },
+	 {			/*  Init_AR00_AR14 */
+	  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+	  0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
+	  0x41, 0x00, 0x0F, 0x00, 0x00,
+	  },
+	 {			/*  Init_CR00_CR18 */
+	  0x5F, 0x4F, 0x4F, 0x00, 0x53, 0x1F, 0x0B, 0x3E,
+	  0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	  0xEA, 0x0C, 0xDF, 0x50, 0x40, 0xDF, 0x00, 0xE3,
+	  0xFF,
+	  },
+	 {			/*  Init_CR30_CR4D */
+	  0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0x03, 0x20,
+	  0x00, 0x00, 0x00, 0x40, 0x00, 0xE7, 0xFF, 0xFD,
+	  0x5F, 0x4F, 0x00, 0x54, 0x00, 0x0B, 0xDF, 0x00,
+	  0xEA, 0x0C, 0x2E, 0x00, 0x4F, 0xDF,
+	  },
+	 {			/*  Init_CR90_CRA7 */
+	  0x56, 0xDD, 0x5E, 0xEA, 0x87, 0x44, 0x8F, 0x55,
+	  0x0A, 0x8F, 0x55, 0x0A, 0x00, 0x00, 0x18, 0x00,
+	  0x11, 0x10, 0x0B, 0x0A, 0x0A, 0x0A, 0x0A, 0x00,
+	  },
+	 },
+	{
+	 /*  mode#0: 640 x 480  32Bpp  60Hz */
+	 640, 480, 32, 60,
+	 /*  Init_MISC */
+	 0xE3,
+	 {			/*  Init_SR0_SR4 */
+	  0x03, 0x01, 0x0F, 0x00, 0x0E,
+	  },
+	 {			/*  Init_SR10_SR24 */
+	  0xFF, 0xBE, 0xEF, 0xFF, 0x00, 0x0E, 0x17, 0x2C,
+	  0x99, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	  0xC4, 0x30, 0x02, 0x01, 0x01,
+	  },
+	 {			/*  Init_SR30_SR75 */
+	  0x32, 0x03, 0xA0, 0x09, 0xC0, 0x32, 0x32, 0x32,
+	  0x32, 0x32, 0x32, 0x32, 0x00, 0x00, 0x03, 0xFF,
+	  0x00, 0xFC, 0x00, 0x00, 0x20, 0x18, 0x00, 0xFC,
+	  0x20, 0x0C, 0x44, 0x20, 0x00, 0x32, 0x32, 0x32,
+	  0x04, 0x24, 0x63, 0x4F, 0x52, 0x0B, 0xDF, 0xEA,
+	  0x04, 0x50, 0x19, 0x32, 0x32, 0x00, 0x00, 0x32,
+	  0x01, 0x80, 0x7E, 0x1A, 0x1A, 0x00, 0x00, 0x00,
+	  0x50, 0x03, 0x74, 0x14, 0x07, 0x82, 0x07, 0x04,
+	  0x00, 0x45, 0x30, 0x30, 0x40, 0x30,
+	  },
+	 {			/*  Init_SR80_SR93 */
+	  0xFF, 0x07, 0x00, 0x6F, 0x7F, 0x7F, 0xFF, 0x32,
+	  0xF7, 0x00, 0x00, 0x00, 0xEF, 0xFF, 0x32, 0x32,
+	  0x00, 0x00, 0x00, 0x00,
+	  },
+	 {			/*  Init_SRA0_SRAF */
+	  0x00, 0xFF, 0xBF, 0xFF, 0xFF, 0xED, 0xED, 0xED,
+	  0x7B, 0xFF, 0xFF, 0xFF, 0xBF, 0xEF, 0xFF, 0xDF,
+	  },
+	 {			/*  Init_GR00_GR08 */
+	  0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x05, 0x0F,
+	  0xFF,
+	  },
+	 {			/*  Init_AR00_AR14 */
+	  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+	  0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
+	  0x41, 0x00, 0x0F, 0x00, 0x00,
+	  },
+	 {			/*  Init_CR00_CR18 */
+	  0x5F, 0x4F, 0x4F, 0x00, 0x53, 0x1F, 0x0B, 0x3E,
+	  0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	  0xEA, 0x0C, 0xDF, 0x50, 0x40, 0xDF, 0x00, 0xE3,
+	  0xFF,
+	  },
+	 {			/*  Init_CR30_CR4D */
+	  0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0x03, 0x20,
+	  0x00, 0x00, 0x00, 0x40, 0x00, 0xE7, 0xFF, 0xFD,
+	  0x5F, 0x4F, 0x00, 0x54, 0x00, 0x0B, 0xDF, 0x00,
+	  0xEA, 0x0C, 0x2E, 0x00, 0x4F, 0xDF,
+	  },
+	 {			/*  Init_CR90_CRA7 */
+	  0x56, 0xDD, 0x5E, 0xEA, 0x87, 0x44, 0x8F, 0x55,
+	  0x0A, 0x8F, 0x55, 0x0A, 0x00, 0x00, 0x18, 0x00,
+	  0x11, 0x10, 0x0B, 0x0A, 0x0A, 0x0A, 0x0A, 0x00,
+	  },
+	 },
+
+	{			/*  mode#2: 800 x 600  16Bpp  60Hz */
+	 800, 600, 16, 60,
+	 /*  Init_MISC */
+	 0x2B,
+	 {			/*  Init_SR0_SR4 */
+	  0x03, 0x01, 0x0F, 0x03, 0x0E,
+	  },
+	 {			/*  Init_SR10_SR24 */
+	  0xFF, 0xBE, 0xEE, 0xFF, 0x00, 0x0E, 0x17, 0x2C,
+	  0x99, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
+	  0xC4, 0x30, 0x02, 0x01, 0x01,
+	  },
+	 {			/*  Init_SR30_SR75 */
+	  0x34, 0x03, 0x20, 0x09, 0xC0, 0x24, 0x24, 0x24,
+	  0x24, 0x24, 0x24, 0x24, 0x00, 0x00, 0x03, 0xFF,
+	  0x00, 0xFC, 0x00, 0x00, 0x20, 0x38, 0x00, 0xFC,
+	  0x20, 0x0C, 0x44, 0x20, 0x00, 0x24, 0x24, 0x24,
+	  0x04, 0x48, 0x83, 0x63, 0x68, 0x72, 0x57, 0x58,
+	  0x04, 0x55, 0x59, 0x24, 0x24, 0x00, 0x00, 0x24,
+	  0x01, 0x80, 0x7A, 0x1A, 0x1A, 0x00, 0x00, 0x00,
+	  0x50, 0x03, 0x74, 0x14, 0x1C, 0x85, 0x35, 0x13,
+	  0x02, 0x45, 0x30, 0x35, 0x40, 0x20,
+	  },
+	 {			/*  Init_SR80_SR93 */
+	  0x00, 0x00, 0x00, 0x6F, 0x7F, 0x7F, 0xFF, 0x24,
+	  0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0x24, 0x24,
+	  0x00, 0x00, 0x00, 0x00,
+	  },
+	 {			/*  Init_SRA0_SRAF */
+	  0x00, 0xFF, 0xBF, 0xFF, 0xFF, 0xED, 0xED, 0xED,
+	  0x7B, 0xFF, 0xFF, 0xFF, 0xBF, 0xEF, 0xBF, 0xDF,
+	  },
+	 {			/*  Init_GR00_GR08 */
+	  0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x05, 0x0F,
+	  0xFF,
+	  },
+	 {			/*  Init_AR00_AR14 */
+	  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+	  0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
+	  0x41, 0x00, 0x0F, 0x00, 0x00,
+	  },
+	 {			/*  Init_CR00_CR18 */
+	  0x7F, 0x63, 0x63, 0x00, 0x68, 0x18, 0x72, 0xF0,
+	  0x00, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	  0x58, 0x0C, 0x57, 0x64, 0x40, 0x57, 0x00, 0xE3,
+	  0xFF,
+	  },
+	 {			/*  Init_CR30_CR4D */
+	  0x00, 0x00, 0x00, 0x00, 0x00, 0x33, 0x03, 0x20,
+	  0x00, 0x00, 0x00, 0x40, 0x00, 0xE7, 0xBF, 0xFD,
+	  0x7F, 0x63, 0x00, 0x69, 0x18, 0x72, 0x57, 0x00,
+	  0x58, 0x0C, 0xE0, 0x20, 0x63, 0x57,
+	  },
+	 {			/*  Init_CR90_CRA7 */
+	  0x56, 0x4B, 0x5E, 0x55, 0x86, 0x9D, 0x8E, 0xAA,
+	  0xDB, 0x2A, 0xDF, 0x33, 0x00, 0x00, 0x18, 0x00,
+	  0x20, 0x1F, 0x1A, 0x19, 0x0F, 0x0F, 0x0F, 0x00,
+	  },
+	 },
+	{			/*  mode#3: 800 x 600  24Bpp  60Hz */
+	 800, 600, 24, 60,
+	 0x2B,
+	 {			/*  Init_SR0_SR4 */
+	  0x03, 0x01, 0x0F, 0x03, 0x0E,
+	  },
+	 {			/*  Init_SR10_SR24 */
+	  0xFF, 0xBE, 0xEE, 0xFF, 0x00, 0x0E, 0x17, 0x2C,
+	  0x99, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	  0xC4, 0x30, 0x02, 0x01, 0x01,
+	  },
+	 {			/*  Init_SR30_SR75 */
+	  0x36, 0x03, 0x20, 0x09, 0xC0, 0x36, 0x36, 0x36,
+	  0x36, 0x36, 0x36, 0x36, 0x00, 0x00, 0x03, 0xFF,
+	  0x00, 0xFC, 0x00, 0x00, 0x20, 0x18, 0x00, 0xFC,
+	  0x20, 0x0C, 0x44, 0x20, 0x00, 0x36, 0x36, 0x36,
+	  0x04, 0x48, 0x83, 0x63, 0x68, 0x72, 0x57, 0x58,
+	  0x04, 0x55, 0x59, 0x36, 0x36, 0x00, 0x00, 0x36,
+	  0x01, 0x80, 0x7E, 0x1A, 0x1A, 0x00, 0x00, 0x00,
+	  0x50, 0x03, 0x74, 0x14, 0x1C, 0x85, 0x35, 0x13,
+	  0x02, 0x45, 0x30, 0x30, 0x40, 0x20,
+	  },
+	 {			/*  Init_SR80_SR93 */
+	  0xFF, 0x07, 0x00, 0x6F, 0x7F, 0x7F, 0xFF, 0x36,
+	  0xF7, 0x00, 0x00, 0x00, 0xEF, 0xFF, 0x36, 0x36,
+	  0x00, 0x00, 0x00, 0x00,
+	  },
+	 {			/*  Init_SRA0_SRAF */
+	  0x00, 0xFF, 0xBF, 0xFF, 0xFF, 0xED, 0xED, 0xED,
+	  0x7B, 0xFF, 0xFF, 0xFF, 0xBF, 0xEF, 0xBF, 0xDF,
+	  },
+	 {			/*  Init_GR00_GR08 */
+	  0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x05, 0x0F,
+	  0xFF,
+	  },
+	 {			/*  Init_AR00_AR14 */
+	  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+	  0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
+	  0x41, 0x00, 0x0F, 0x00, 0x00,
+	  },
+	 {			/*  Init_CR00_CR18 */
+	  0x7F, 0x63, 0x63, 0x00, 0x68, 0x18, 0x72, 0xF0,
+	  0x00, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	  0x58, 0x0C, 0x57, 0x64, 0x40, 0x57, 0x00, 0xE3,
+	  0xFF,
+	  },
+	 {			/*  Init_CR30_CR4D */
+	  0x00, 0x00, 0x00, 0x00, 0x00, 0x33, 0x03, 0x20,
+	  0x00, 0x00, 0x00, 0x40, 0x00, 0xE7, 0xBF, 0xFD,
+	  0x7F, 0x63, 0x00, 0x69, 0x18, 0x72, 0x57, 0x00,
+	  0x58, 0x0C, 0xE0, 0x20, 0x63, 0x57,
+	  },
+	 {			/*  Init_CR90_CRA7 */
+	  0x56, 0x4B, 0x5E, 0x55, 0x86, 0x9D, 0x8E, 0xAA,
+	  0xDB, 0x2A, 0xDF, 0x33, 0x00, 0x00, 0x18, 0x00,
+	  0x20, 0x1F, 0x1A, 0x19, 0x0F, 0x0F, 0x0F, 0x00,
+	  },
+	 },
+	{			/*  mode#7: 800 x 600  32Bpp  60Hz */
+	 800, 600, 32, 60,
+	 /*  Init_MISC */
+	 0x2B,
+	 {			/*  Init_SR0_SR4 */
+	  0x03, 0x01, 0x0F, 0x03, 0x0E,
+	  },
+	 {			/*  Init_SR10_SR24 */
+	  0xFF, 0xBE, 0xEE, 0xFF, 0x00, 0x0E, 0x17, 0x2C,
+	  0x99, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
+	  0xC4, 0x30, 0x02, 0x01, 0x01,
+	  },
+	 {			/*  Init_SR30_SR75 */
+	  0x34, 0x03, 0x20, 0x09, 0xC0, 0x24, 0x24, 0x24,
+	  0x24, 0x24, 0x24, 0x24, 0x00, 0x00, 0x03, 0xFF,
+	  0x00, 0xFC, 0x00, 0x00, 0x20, 0x38, 0x00, 0xFC,
+	  0x20, 0x0C, 0x44, 0x20, 0x00, 0x24, 0x24, 0x24,
+	  0x04, 0x48, 0x83, 0x63, 0x68, 0x72, 0x57, 0x58,
+	  0x04, 0x55, 0x59, 0x24, 0x24, 0x00, 0x00, 0x24,
+	  0x01, 0x80, 0x7A, 0x1A, 0x1A, 0x00, 0x00, 0x00,
+	  0x50, 0x03, 0x74, 0x14, 0x1C, 0x85, 0x35, 0x13,
+	  0x02, 0x45, 0x30, 0x35, 0x40, 0x20,
+	  },
+	 {			/*  Init_SR80_SR93 */
+	  0x00, 0x00, 0x00, 0x6F, 0x7F, 0x7F, 0xFF, 0x24,
+	  0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0x24, 0x24,
+	  0x00, 0x00, 0x00, 0x00,
+	  },
+	 {			/*  Init_SRA0_SRAF */
+	  0x00, 0xFF, 0xBF, 0xFF, 0xFF, 0xED, 0xED, 0xED,
+	  0x7B, 0xFF, 0xFF, 0xFF, 0xBF, 0xEF, 0xBF, 0xDF,
+	  },
+	 {			/*  Init_GR00_GR08 */
+	  0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x05, 0x0F,
+	  0xFF,
+	  },
+	 {			/*  Init_AR00_AR14 */
+	  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+	  0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
+	  0x41, 0x00, 0x0F, 0x00, 0x00,
+	  },
+	 {			/*  Init_CR00_CR18 */
+	  0x7F, 0x63, 0x63, 0x00, 0x68, 0x18, 0x72, 0xF0,
+	  0x00, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	  0x58, 0x0C, 0x57, 0x64, 0x40, 0x57, 0x00, 0xE3,
+	  0xFF,
+	  },
+	 {			/*  Init_CR30_CR4D */
+	  0x00, 0x00, 0x00, 0x00, 0x00, 0x33, 0x03, 0x20,
+	  0x00, 0x00, 0x00, 0x40, 0x00, 0xE7, 0xBF, 0xFD,
+	  0x7F, 0x63, 0x00, 0x69, 0x18, 0x72, 0x57, 0x00,
+	  0x58, 0x0C, 0xE0, 0x20, 0x63, 0x57,
+	  },
+	 {			/*  Init_CR90_CRA7 */
+	  0x56, 0x4B, 0x5E, 0x55, 0x86, 0x9D, 0x8E, 0xAA,
+	  0xDB, 0x2A, 0xDF, 0x33, 0x00, 0x00, 0x18, 0x00,
+	  0x20, 0x1F, 0x1A, 0x19, 0x0F, 0x0F, 0x0F, 0x00,
+	  },
+	 },
+	/* We use 1024x768 table to light 1024x600 panel for lemote */
+	{			/*  mode#4: 1024 x 600  16Bpp  60Hz  */
+	 1024, 600, 16, 60,
+	 /*  Init_MISC */
+	 0xEB,
+	 {			/*  Init_SR0_SR4 */
+	  0x03, 0x01, 0x0F, 0x00, 0x0E,
+	  },
+	 {			/*  Init_SR10_SR24 */
+	  0xC8, 0x40, 0x14, 0x60, 0x00, 0x0A, 0x17, 0x20,
+	  0x51, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
+	  0xC4, 0x30, 0x02, 0x00, 0x01,
+	  },
+	 {			/*  Init_SR30_SR75 */
+	  0x22, 0x03, 0x24, 0x09, 0xC0, 0x22, 0x22, 0x22,
+	  0x22, 0x22, 0x22, 0x22, 0x00, 0x00, 0x03, 0xFF,
+	  0x00, 0xFC, 0x00, 0x00, 0x20, 0x18, 0x00, 0xFC,
+	  0x20, 0x0C, 0x44, 0x20, 0x00, 0x22, 0x22, 0x22,
+	  0x06, 0x68, 0xA7, 0x7F, 0x83, 0x24, 0xFF, 0x03,
+	  0x00, 0x60, 0x59, 0x22, 0x22, 0x00, 0x00, 0x22,
+	  0x01, 0x80, 0x7A, 0x1A, 0x1A, 0x00, 0x00, 0x00,
+	  0x50, 0x03, 0x16, 0x02, 0x0D, 0x82, 0x09, 0x02,
+	  0x04, 0x45, 0x3F, 0x30, 0x40, 0x20,
+	  },
+	 {			/*  Init_SR80_SR93 */
+	  0xFF, 0x07, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0x3A,
+	  0xF7, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0x3A, 0x3A,
+	  0x00, 0x00, 0x00, 0x00,
+	  },
+	 {			/*  Init_SRA0_SRAF */
+	  0x00, 0xFB, 0x9F, 0x01, 0x00, 0xED, 0xED, 0xED,
+	  0x7B, 0xFB, 0xFF, 0xFF, 0x97, 0xEF, 0xBF, 0xDF,
+	  },
+	 {			/*  Init_GR00_GR08 */
+	  0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x05, 0x0F,
+	  0xFF,
+	  },
+	 {			/*  Init_AR00_AR14 */
+	  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+	  0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
+	  0x41, 0x00, 0x0F, 0x00, 0x00,
+	  },
+	 {			/*  Init_CR00_CR18 */
+	  0xA3, 0x7F, 0x7F, 0x00, 0x85, 0x16, 0x24, 0xF5,
+	  0x00, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	  0x03, 0x09, 0xFF, 0x80, 0x40, 0xFF, 0x00, 0xE3,
+	  0xFF,
+	  },
+	 {			/*  Init_CR30_CR4D */
+	  0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x02, 0x20,
+	  0x00, 0x00, 0x00, 0x40, 0x00, 0xFF, 0xBF, 0xFF,
+	  0xA3, 0x7F, 0x00, 0x82, 0x0b, 0x6f, 0x57, 0x00,
+	  0x5c, 0x0f, 0xE0, 0xe0, 0x7F, 0x57,
+	  },
+	 {			/*  Init_CR90_CRA7 */
+	  0x55, 0xD9, 0x5D, 0xE1, 0x86, 0x1B, 0x8E, 0x26,
+	  0xDA, 0x8D, 0xDE, 0x94, 0x00, 0x00, 0x18, 0x00,
+	  0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x15, 0x03,
+	  },
+	 },
+	{			/*  mode#5: 1024 x 768  24Bpp  60Hz */
+	 1024, 768, 24, 60,
+	 /*  Init_MISC */
+	 0xEB,
+	 {			/*  Init_SR0_SR4 */
+	  0x03, 0x01, 0x0F, 0x03, 0x0E,
+	  },
+	 {			/*  Init_SR10_SR24 */
+	  0xF3, 0xB6, 0xC0, 0xDD, 0x00, 0x0E, 0x17, 0x2C,
+	  0x99, 0x02, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
+	  0xC4, 0x30, 0x02, 0x01, 0x01,
+	  },
+	 {			/*  Init_SR30_SR75 */
+	  0x38, 0x03, 0x20, 0x09, 0xC0, 0x3A, 0x3A, 0x3A,
+	  0x3A, 0x3A, 0x3A, 0x3A, 0x00, 0x00, 0x03, 0xFF,
+	  0x00, 0xFC, 0x00, 0x00, 0x20, 0x18, 0x00, 0xFC,
+	  0x20, 0x0C, 0x44, 0x20, 0x00, 0x00, 0x00, 0x3A,
+	  0x06, 0x68, 0xA7, 0x7F, 0x83, 0x24, 0xFF, 0x03,
+	  0x00, 0x60, 0x59, 0x3A, 0x3A, 0x00, 0x00, 0x3A,
+	  0x01, 0x80, 0x7E, 0x1A, 0x1A, 0x00, 0x00, 0x00,
+	  0x50, 0x03, 0x74, 0x14, 0x3B, 0x0D, 0x09, 0x02,
+	  0x04, 0x45, 0x30, 0x30, 0x40, 0x20,
+	  },
+	 {			/*  Init_SR80_SR93 */
+	  0xFF, 0x07, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0x3A,
+	  0xF7, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0x3A, 0x3A,
+	  0x00, 0x00, 0x00, 0x00,
+	  },
+	 {			/*  Init_SRA0_SRAF */
+	  0x00, 0xFB, 0x9F, 0x01, 0x00, 0xED, 0xED, 0xED,
+	  0x7B, 0xFB, 0xFF, 0xFF, 0x97, 0xEF, 0xBF, 0xDF,
+	  },
+	 {			/*  Init_GR00_GR08 */
+	  0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x05, 0x0F,
+	  0xFF,
+	  },
+	 {			/*  Init_AR00_AR14 */
+	  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+	  0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
+	  0x41, 0x00, 0x0F, 0x00, 0x00,
+	  },
+	 {			/*  Init_CR00_CR18 */
+	  0xA3, 0x7F, 0x7F, 0x00, 0x85, 0x16, 0x24, 0xF5,
+	  0x00, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	  0x03, 0x09, 0xFF, 0x80, 0x40, 0xFF, 0x00, 0xE3,
+	  0xFF,
+	  },
+	 {			/*  Init_CR30_CR4D */
+	  0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x02, 0x20,
+	  0x00, 0x00, 0x00, 0x40, 0x00, 0xFF, 0xBF, 0xFF,
+	  0xA3, 0x7F, 0x00, 0x86, 0x15, 0x24, 0xFF, 0x00,
+	  0x01, 0x07, 0xE5, 0x20, 0x7F, 0xFF,
+	  },
+	 {			/*  Init_CR90_CRA7 */
+	  0x55, 0xD9, 0x5D, 0xE1, 0x86, 0x1B, 0x8E, 0x26,
+	  0xDA, 0x8D, 0xDE, 0x94, 0x00, 0x00, 0x18, 0x00,
+	  0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x15, 0x03,
+	  },
+	 },
+	{			/*  mode#4: 1024 x 768  32Bpp  60Hz */
+	 1024, 768, 32, 60,
+	 /*  Init_MISC */
+	 0xEB,
+	 {			/*  Init_SR0_SR4 */
+	  0x03, 0x01, 0x0F, 0x03, 0x0E,
+	  },
+	 {			/*  Init_SR10_SR24 */
+	  0xF3, 0xB6, 0xC0, 0xDD, 0x00, 0x0E, 0x17, 0x2C,
+	  0x99, 0x02, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
+	  0xC4, 0x32, 0x02, 0x01, 0x01,
+	  },
+	 {			/*  Init_SR30_SR75 */
+	  0x38, 0x03, 0x20, 0x09, 0xC0, 0x3A, 0x3A, 0x3A,
+	  0x3A, 0x3A, 0x3A, 0x3A, 0x00, 0x00, 0x03, 0xFF,
+	  0x00, 0xFC, 0x00, 0x00, 0x20, 0x18, 0x00, 0xFC,
+	  0x20, 0x0C, 0x44, 0x20, 0x00, 0x00, 0x00, 0x3A,
+	  0x06, 0x68, 0xA7, 0x7F, 0x83, 0x24, 0xFF, 0x03,
+	  0x00, 0x60, 0x59, 0x3A, 0x3A, 0x00, 0x00, 0x3A,
+	  0x01, 0x80, 0x7E, 0x1A, 0x1A, 0x00, 0x00, 0x00,
+	  0x50, 0x03, 0x74, 0x14, 0x3B, 0x0D, 0x09, 0x02,
+	  0x04, 0x45, 0x30, 0x30, 0x40, 0x20,
+	  },
+	 {			/*  Init_SR80_SR93 */
+	  0xFF, 0x07, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0x3A,
+	  0xF7, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0x3A, 0x3A,
+	  0x00, 0x00, 0x00, 0x00,
+	  },
+	 {			/*  Init_SRA0_SRAF */
+	  0x00, 0xFB, 0x9F, 0x01, 0x00, 0xED, 0xED, 0xED,
+	  0x7B, 0xFB, 0xFF, 0xFF, 0x97, 0xEF, 0xBF, 0xDF,
+	  },
+	 {			/*  Init_GR00_GR08 */
+	  0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x05, 0x0F,
+	  0xFF,
+	  },
+	 {			/*  Init_AR00_AR14 */
+	  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+	  0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
+	  0x41, 0x00, 0x0F, 0x00, 0x00,
+	  },
+	 {			/*  Init_CR00_CR18 */
+	  0xA3, 0x7F, 0x7F, 0x00, 0x85, 0x16, 0x24, 0xF5,
+	  0x00, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	  0x03, 0x09, 0xFF, 0x80, 0x40, 0xFF, 0x00, 0xE3,
+	  0xFF,
+	  },
+	 {			/*  Init_CR30_CR4D */
+	  0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x02, 0x20,
+	  0x00, 0x00, 0x00, 0x40, 0x00, 0xFF, 0xBF, 0xFF,
+	  0xA3, 0x7F, 0x00, 0x86, 0x15, 0x24, 0xFF, 0x00,
+	  0x01, 0x07, 0xE5, 0x20, 0x7F, 0xFF,
+	  },
+	 {			/*  Init_CR90_CRA7 */
+	  0x55, 0xD9, 0x5D, 0xE1, 0x86, 0x1B, 0x8E, 0x26,
+	  0xDA, 0x8D, 0xDE, 0x94, 0x00, 0x00, 0x18, 0x00,
+	  0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x15, 0x03,
+	  },
+	 },
+	{			/*  mode#6: 320 x 240  16Bpp  60Hz */
+	 320, 240, 16, 60,
+	 /*  Init_MISC */
+	 0xEB,
+	 {			/*  Init_SR0_SR4 */
+	  0x03, 0x01, 0x0F, 0x03, 0x0E,
+	  },
+	 {			/*  Init_SR10_SR24 */
+	  0xF3, 0xB6, 0xC0, 0xDD, 0x00, 0x0E, 0x17, 0x2C,
+	  0x99, 0x02, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
+	  0xC4, 0x32, 0x02, 0x01, 0x01,
+	  },
+	 {			/*  Init_SR30_SR75 */
+	  0x38, 0x03, 0x20, 0x09, 0xC0, 0x3A, 0x3A, 0x3A,
+	  0x3A, 0x3A, 0x3A, 0x3A, 0x00, 0x00, 0x03, 0xFF,
+	  0x00, 0xFC, 0x00, 0x00, 0x20, 0x18, 0x00, 0xFC,
+	  0x20, 0x0C, 0x44, 0x20, 0x00, 0x00, 0x00, 0x3A,
+	  0x06, 0x68, 0xA7, 0x7F, 0x83, 0x24, 0xFF, 0x03,
+	  0x00, 0x60, 0x59, 0x3A, 0x3A, 0x00, 0x00, 0x3A,
+	  0x01, 0x80, 0x7E, 0x1A, 0x1A, 0x00, 0x00, 0x00,
+	  0x50, 0x03, 0x74, 0x14, 0x08, 0x43, 0x08, 0x43,
+	  0x04, 0x45, 0x30, 0x30, 0x40, 0x20,
+	  },
+	 {			/*  Init_SR80_SR93 */
+	  0xFF, 0x07, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0x3A,
+	  0xF7, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0x3A, 0x3A,
+	  0x00, 0x00, 0x00, 0x00,
+	  },
+	 {			/*  Init_SRA0_SRAF */
+	  0x00, 0xFB, 0x9F, 0x01, 0x00, 0xED, 0xED, 0xED,
+	  0x7B, 0xFB, 0xFF, 0xFF, 0x97, 0xEF, 0xBF, 0xDF,
+	  },
+	 {			/*  Init_GR00_GR08 */
+	  0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x05, 0x0F,
+	  0xFF,
+	  },
+	 {			/*  Init_AR00_AR14 */
+	  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+	  0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
+	  0x41, 0x00, 0x0F, 0x00, 0x00,
+	  },
+	 {			/*  Init_CR00_CR18 */
+	  0xA3, 0x7F, 0x7F, 0x00, 0x85, 0x16, 0x24, 0xF5,
+	  0x00, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	  0x03, 0x09, 0xFF, 0x80, 0x40, 0xFF, 0x00, 0xE3,
+	  0xFF,
+	  },
+	 {			/*  Init_CR30_CR4D */
+	  0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x02, 0x20,
+	  0x00, 0x00, 0x30, 0x40, 0x00, 0xFF, 0xBF, 0xFF,
+	  0x2E, 0x27, 0x00, 0x2b, 0x0c, 0x0F, 0xEF, 0x00,
+	  0xFe, 0x0f, 0x01, 0xC0, 0x27, 0xEF,
+	  },
+	 {			/*  Init_CR90_CRA7 */
+	  0x55, 0xD9, 0x5D, 0xE1, 0x86, 0x1B, 0x8E, 0x26,
+	  0xDA, 0x8D, 0xDE, 0x94, 0x00, 0x00, 0x18, 0x00,
+	  0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x15, 0x03,
+	  },
+	 },
+
+	{			/*  mode#8: 320 x 240  32Bpp  60Hz */
+	 320, 240, 32, 60,
+	 /*  Init_MISC */
+	 0xEB,
+	 {			/*  Init_SR0_SR4 */
+	  0x03, 0x01, 0x0F, 0x03, 0x0E,
+	  },
+	 {			/*  Init_SR10_SR24 */
+	  0xF3, 0xB6, 0xC0, 0xDD, 0x00, 0x0E, 0x17, 0x2C,
+	  0x99, 0x02, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
+	  0xC4, 0x32, 0x02, 0x01, 0x01,
+	  },
+	 {			/*  Init_SR30_SR75 */
+	  0x38, 0x03, 0x20, 0x09, 0xC0, 0x3A, 0x3A, 0x3A,
+	  0x3A, 0x3A, 0x3A, 0x3A, 0x00, 0x00, 0x03, 0xFF,
+	  0x00, 0xFC, 0x00, 0x00, 0x20, 0x18, 0x00, 0xFC,
+	  0x20, 0x0C, 0x44, 0x20, 0x00, 0x00, 0x00, 0x3A,
+	  0x06, 0x68, 0xA7, 0x7F, 0x83, 0x24, 0xFF, 0x03,
+	  0x00, 0x60, 0x59, 0x3A, 0x3A, 0x00, 0x00, 0x3A,
+	  0x01, 0x80, 0x7E, 0x1A, 0x1A, 0x00, 0x00, 0x00,
+	  0x50, 0x03, 0x74, 0x14, 0x08, 0x43, 0x08, 0x43,
+	  0x04, 0x45, 0x30, 0x30, 0x40, 0x20,
+	  },
+	 {			/*  Init_SR80_SR93 */
+	  0xFF, 0x07, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0x3A,
+	  0xF7, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0x3A, 0x3A,
+	  0x00, 0x00, 0x00, 0x00,
+	  },
+	 {			/*  Init_SRA0_SRAF */
+	  0x00, 0xFB, 0x9F, 0x01, 0x00, 0xED, 0xED, 0xED,
+	  0x7B, 0xFB, 0xFF, 0xFF, 0x97, 0xEF, 0xBF, 0xDF,
+	  },
+	 {			/*  Init_GR00_GR08 */
+	  0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x05, 0x0F,
+	  0xFF,
+	  },
+	 {			/*  Init_AR00_AR14 */
+	  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+	  0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
+	  0x41, 0x00, 0x0F, 0x00, 0x00,
+	  },
+	 {			/*  Init_CR00_CR18 */
+	  0xA3, 0x7F, 0x7F, 0x00, 0x85, 0x16, 0x24, 0xF5,
+	  0x00, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	  0x03, 0x09, 0xFF, 0x80, 0x40, 0xFF, 0x00, 0xE3,
+	  0xFF,
+	  },
+	 {			/*  Init_CR30_CR4D */
+	  0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x02, 0x20,
+	  0x00, 0x00, 0x30, 0x40, 0x00, 0xFF, 0xBF, 0xFF,
+	  0x2E, 0x27, 0x00, 0x2b, 0x0c, 0x0F, 0xEF, 0x00,
+	  0xFe, 0x0f, 0x01, 0xC0, 0x27, 0xEF,
+	  },
+	 {			/*  Init_CR90_CRA7 */
+	  0x55, 0xD9, 0x5D, 0xE1, 0x86, 0x1B, 0x8E, 0x26,
+	  0xDA, 0x8D, 0xDE, 0x94, 0x00, 0x00, 0x18, 0x00,
+	  0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x15, 0x03,
+	  },
+	 },
+};
+
+#define numVGAModes		(sizeof(VGAMode) / sizeof(struct ModeInit))
diff --git a/drivers/staging/vt6655/Kconfig b/drivers/staging/vt6655/Kconfig
index 825bbc4fc3fa..061e730df2d0 100644
--- a/drivers/staging/vt6655/Kconfig
+++ b/drivers/staging/vt6655/Kconfig
@@ -1,6 +1,6 @@
 config VT6655
    tristate "VIA Technologies VT6655 support"
-   depends on PCI
+   depends on PCI && WLAN
    select WIRELESS_EXT
    select WEXT_PRIV
    ---help---
diff --git a/drivers/staging/vt6656/Kconfig b/drivers/staging/vt6656/Kconfig
index 87bcd269310c..1055b526c532 100644
--- a/drivers/staging/vt6656/Kconfig
+++ b/drivers/staging/vt6656/Kconfig
@@ -1,6 +1,6 @@
 config VT6656
 	tristate "VIA Technologies VT6656 support"
-	depends on USB
+	depends on USB && WLAN
 	select WIRELESS_EXT
 	select WEXT_PRIV
 	---help---
diff --git a/drivers/staging/wlan-ng/prism2fw.c b/drivers/staging/wlan-ng/prism2fw.c
index 7d76a7f92a33..aaa70ed57710 100644
--- a/drivers/staging/wlan-ng/prism2fw.c
+++ b/drivers/staging/wlan-ng/prism2fw.c
@@ -439,7 +439,7 @@ void free_chunks(imgchunk_t *fchunk, unsigned int *nfchunks)
 		}
 	}
 	*nfchunks = 0;
-	memset(fchunk, 0, sizeof(fchunk));
+	memset(fchunk, 0, sizeof(*fchunk));
 
 }
 
diff --git a/include/linux/dst.h b/include/linux/dst.h
deleted file mode 100644
index e26fed84b1aa..000000000000
--- a/include/linux/dst.h
+++ /dev/null
@@ -1,587 +0,0 @@
-/*
- * 2007+ Copyright (c) Evgeniy Polyakov <johnpol@2ka.mipt.ru>
- * All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
-
-#ifndef __DST_H
-#define __DST_H
-
-#include <linux/types.h>
-#include <linux/connector.h>
-
-#define DST_NAMELEN		32
-#define DST_NAME		"dst"
-
-enum {
-	/* Remove node with given id from storage */
-	DST_DEL_NODE	= 0,
-	/* Add remote node with given id to the storage */
-	DST_ADD_REMOTE,
-	/* Add local node with given id to the storage to be exported and used by remote peers */
-	DST_ADD_EXPORT,
-	/* Crypto initialization command (hash/cipher used to protect the connection) */
-	DST_CRYPTO,
-	/* Security attributes for given connection (permissions for example) */
-	DST_SECURITY,
-	/* Register given node in the block layer subsystem */
-	DST_START,
-	DST_CMD_MAX
-};
-
-struct dst_ctl
-{
-	/* Storage name */
-	char			name[DST_NAMELEN];
-	/* Command flags */
-	__u32			flags;
-	/* Command itself (see above) */
-	__u32			cmd;
-	/* Maximum number of pages per single request in this device */
-	__u32			max_pages;
-	/* Stale/error transaction scanning timeout in milliseconds */
-	__u32			trans_scan_timeout;
-	/* Maximum number of retry sends before completing transaction as broken */
-	__u32			trans_max_retries;
-	/* Storage size */
-	__u64			size;
-};
-
-/* Reply command carries completion status */
-struct dst_ctl_ack
-{
-	struct cn_msg		msg;
-	int			error;
-	int			unused[3];
-};
-
-/*
- * Unfortunaltely socket address structure is not exported to userspace
- * and is redefined there.
- */
-#define SADDR_MAX_DATA	128
-
-struct saddr {
-	/* address family, AF_xxx	*/
-	unsigned short		sa_family;
-	/* 14 bytes of protocol address	*/
-	char			sa_data[SADDR_MAX_DATA];
-	/* Number of bytes used in sa_data */
-	unsigned short		sa_data_len;
-};
-
-/* Address structure */
-struct dst_network_ctl
-{
-	/* Socket type: datagram, stream...*/
-	unsigned int		type;
-	/* Let me guess, is it a Jupiter diameter? */
-	unsigned int		proto;
-	/* Peer's address */
-	struct saddr		addr;
-};
-
-struct dst_crypto_ctl
-{
-	/* Cipher and hash names */
-	char			cipher_algo[DST_NAMELEN];
-	char			hash_algo[DST_NAMELEN];
-
-	/* Key sizes. Can be zero for digest for example */
-	unsigned int		cipher_keysize, hash_keysize;
-	/* Alignment. Calculated by the DST itself. */
-	unsigned int		crypto_attached_size;
-	/* Number of threads to perform crypto operations */
-	int			thread_num;
-};
-
-/* Export security attributes have this bits checked in when client connects */
-#define DST_PERM_READ		(1<<0)
-#define DST_PERM_WRITE		(1<<1)
-
-/*
- * Right now it is simple model, where each remote address
- * is assigned to set of permissions it is allowed to perform.
- * In real world block device does not know anything but
- * reading and writing, so it should be more than enough.
- */
-struct dst_secure_user
-{
-	unsigned int		permissions;
-	struct saddr		addr;
-};
-
-/*
- * Export control command: device to export and network address to accept
- * clients to work with given device
- */
-struct dst_export_ctl
-{
-	char			device[DST_NAMELEN];
-	struct dst_network_ctl	ctl;
-};
-
-enum {
-	DST_CFG	= 1, 		/* Request remote configuration */
-	DST_IO,			/* IO command */
-	DST_IO_RESPONSE,	/* IO response */
-	DST_PING,		/* Keepalive message */
-	DST_NCMD_MAX,
-};
-
-struct dst_cmd
-{
-	/* Network command itself, see above */
-	__u32			cmd;
-	/*
-	 * Size of the attached data
-	 * (in most cases, for READ command it means how many bytes were requested)
-	 */
-	__u32			size;
-	/* Crypto size: number of attached bytes with digest/hmac */
-	__u32			csize;
-	/* Here we can carry secret data */
-	__u32			reserved;
-	/* Read/write bits, see how they are encoded in bio structure */
-	__u64			rw;
-	/* BIO flags */
-	__u64			flags;
-	/* Unique command id (like transaction ID) */
-	__u64			id;
-	/* Sector to start IO from */
-	__u64			sector;
-	/* Hash data is placed after this header */
-	__u8			hash[0];
-};
-
-/*
- * Convert command to/from network byte order.
- * We do not use hton*() functions, since there is
- * no 64-bit implementation.
- */
-static inline void dst_convert_cmd(struct dst_cmd *c)
-{
-	c->cmd = __cpu_to_be32(c->cmd);
-	c->csize = __cpu_to_be32(c->csize);
-	c->size = __cpu_to_be32(c->size);
-	c->sector = __cpu_to_be64(c->sector);
-	c->id = __cpu_to_be64(c->id);
-	c->flags = __cpu_to_be64(c->flags);
-	c->rw = __cpu_to_be64(c->rw);
-}
-
-/* Transaction id */
-typedef __u64 dst_gen_t;
-
-#ifdef __KERNEL__
-
-#include <linux/blkdev.h>
-#include <linux/bio.h>
-#include <linux/device.h>
-#include <linux/mempool.h>
-#include <linux/net.h>
-#include <linux/poll.h>
-#include <linux/rbtree.h>
-
-#ifdef CONFIG_DST_DEBUG
-#define dprintk(f, a...) printk(KERN_NOTICE f, ##a)
-#else
-static inline void __attribute__ ((format (printf, 1, 2)))
-	dprintk(const char *fmt, ...) {}
-#endif
-
-struct dst_node;
-
-struct dst_trans
-{
-	/* DST node we are working with */
-	struct dst_node		*n;
-
-	/* Entry inside transaction tree */
-	struct rb_node		trans_entry;
-
-	/* Merlin kills this transaction when this memory cell equals zero */
-	atomic_t		refcnt;
-
-	/* How this transaction should be processed by crypto engine */
-	short			enc;
-	/* How many times this transaction was resent */
-	short			retries;
-	/* Completion status */
-	int			error;
-
-	/* When did we send it to the remote peer */
-	long			send_time;
-
-	/* My name is...
-	 * Well, computers does not speak, they have unique id instead */
-	dst_gen_t		gen;
-
-	/* Block IO we are working with */
-	struct bio		*bio;
-
-	/* Network command for above block IO request */
-	struct dst_cmd		cmd;
-};
-
-struct dst_crypto_engine
-{
-	/* What should we do with all block requests */
-	struct crypto_hash	*hash;
-	struct crypto_ablkcipher	*cipher;
-
-	/* Pool of pages used to encrypt data into before sending */
-	int			page_num;
-	struct page		**pages;
-
-	/* What to do with current request */
-	int			enc;
-	/* Who we are and where do we go */
-	struct scatterlist	*src, *dst;
-
-	/* Maximum timeout waiting for encryption to be completed */
-	long			timeout;
-	/* IV is a 64-bit sequential counter */
-	u64			iv;
-
-	/* Secret data */
-	void			*private;
-
-	/* Cached temporary data lives here */
-	int			size;
-	void			*data;
-};
-
-struct dst_state
-{
-	/* The main state protection */
-	struct mutex		state_lock;
-
-	/* Polling machinery for sockets */
-	wait_queue_t 		wait;
-	wait_queue_head_t 	*whead;
-	/* Most of events are being waited here */
-	wait_queue_head_t 	thread_wait;
-
-	/* Who owns this? */
-	struct dst_node		*node;
-
-	/* Network address for this state */
-	struct dst_network_ctl	ctl;
-
-	/* Permissions to work with: read-only or rw connection */
-	u32			permissions;
-
-	/* Called when we need to clean private data */
-	void			(* cleanup)(struct dst_state *st);
-
-	/* Used by the server: BIO completion queues BIOs here */
-	struct list_head	request_list;
-	spinlock_t		request_lock;
-
-	/* Guess what? No, it is not number of planets */
-	atomic_t		refcnt;
-
-	/* This flags is set when connection should be dropped */
-	int			need_exit;
-
-	/*
-	 * Socket to work with. Second pointer is used for
-	 * lockless check if socket was changed before performing
-	 * next action (like working with cached polling result)
-	 */
-	struct socket		*socket, *read_socket;
-
-	/* Cached preallocated data */
-	void			*data;
-	unsigned int		size;
-
-	/* Currently processed command */
-	struct dst_cmd		cmd;
-};
-
-struct dst_info
-{
-	/* Device size */
-	u64			size;
-
-	/* Local device name for export devices */
-	char			local[DST_NAMELEN];
-
-	/* Network setup */
-	struct dst_network_ctl	net;
-
-	/* Sysfs bits use this */
-	struct device		device;
-};
-
-struct dst_node
-{
-	struct list_head	node_entry;
-
-	/* Hi, my name is stored here */
-	char			name[DST_NAMELEN];
-	/* My cache name is stored here */
-	char			cache_name[DST_NAMELEN];
-
-	/* Block device attached to given node.
-	 * Only valid for exporting nodes */
-	struct block_device 	*bdev;
-	/* Network state machine for given peer */
-	struct dst_state	*state;
-
-	/* Block IO machinery */
-	struct request_queue	*queue;
-	struct gendisk		*disk;
-
-	/* Number of threads in processing pool */
-	int			thread_num;
-	/* Maximum number of pages in single IO */
-	int			max_pages;
-
-	/* I'm that big in bytes */
-	loff_t			size;
-
-	/* Exported to userspace node information */
-	struct dst_info		*info;
-
-	/*
-	 * Security attribute list.
-	 * Used only by exporting node currently.
-	 */
-	struct list_head	security_list;
-	struct mutex		security_lock;
-
-	/*
-	 * When this unerflows below zero, university collapses.
-	 * But this will not happen, since node will be freed,
-	 * when reference counter reaches zero.
-	 */
-	atomic_t		refcnt;
-
-	/* How precisely should I be started? */
-	int 			(*start)(struct dst_node *);
-
-	/* Crypto capabilities */
-	struct dst_crypto_ctl	crypto;
-	u8			*hash_key;
-	u8			*cipher_key;
-
-	/* Pool of processing thread */
-	struct thread_pool	*pool;
-
-	/* Transaction IDs live here */
-	atomic_long_t		gen;
-
-	/*
-	 * How frequently and how many times transaction
-	 * tree should be scanned to drop stale objects.
-	 */
-	long			trans_scan_timeout;
-	int			trans_max_retries;
-
-	/* Small gnomes live here */
-	struct rb_root		trans_root;
-	struct mutex		trans_lock;
-
-	/*
-	 * Transaction cache/memory pool.
-	 * It is big enough to contain not only transaction
-	 * itself, but additional crypto data (digest/hmac).
-	 */
-	struct kmem_cache	*trans_cache;
-	mempool_t		*trans_pool;
-
-	/* This entity scans transaction tree */
-	struct delayed_work 	trans_work;
-
-	wait_queue_head_t	wait;
-};
-
-/* Kernel representation of the security attribute */
-struct dst_secure
-{
-	struct list_head	sec_entry;
-	struct dst_secure_user	sec;
-};
-
-int dst_process_bio(struct dst_node *n, struct bio *bio);
-
-int dst_node_init_connected(struct dst_node *n, struct dst_network_ctl *r);
-int dst_node_init_listened(struct dst_node *n, struct dst_export_ctl *le);
-
-static inline struct dst_state *dst_state_get(struct dst_state *st)
-{
-	BUG_ON(atomic_read(&st->refcnt) == 0);
-	atomic_inc(&st->refcnt);
-	return st;
-}
-
-void dst_state_put(struct dst_state *st);
-
-struct dst_state *dst_state_alloc(struct dst_node *n);
-int dst_state_socket_create(struct dst_state *st);
-void dst_state_socket_release(struct dst_state *st);
-
-void dst_state_exit_connected(struct dst_state *st);
-
-int dst_state_schedule_receiver(struct dst_state *st);
-
-void dst_dump_addr(struct socket *sk, struct sockaddr *sa, char *str);
-
-static inline void dst_state_lock(struct dst_state *st)
-{
-	mutex_lock(&st->state_lock);
-}
-
-static inline void dst_state_unlock(struct dst_state *st)
-{
-	mutex_unlock(&st->state_lock);
-}
-
-void dst_poll_exit(struct dst_state *st);
-int dst_poll_init(struct dst_state *st);
-
-static inline unsigned int dst_state_poll(struct dst_state *st)
-{
-	unsigned int revents = POLLHUP | POLLERR;
-
-	dst_state_lock(st);
-	if (st->socket)
-		revents = st->socket->ops->poll(NULL, st->socket, NULL);
-	dst_state_unlock(st);
-
-	return revents;
-}
-
-static inline int dst_thread_setup(void *private, void *data)
-{
-	return 0;
-}
-
-void dst_node_put(struct dst_node *n);
-
-static inline struct dst_node *dst_node_get(struct dst_node *n)
-{
-	atomic_inc(&n->refcnt);
-	return n;
-}
-
-int dst_data_recv(struct dst_state *st, void *data, unsigned int size);
-int dst_recv_cdata(struct dst_state *st, void *cdata);
-int dst_data_send_header(struct socket *sock,
-		void *data, unsigned int size, int more);
-
-int dst_send_bio(struct dst_state *st, struct dst_cmd *cmd, struct bio *bio);
-
-int dst_process_io(struct dst_state *st);
-int dst_export_crypto(struct dst_node *n, struct bio *bio);
-int dst_export_send_bio(struct bio *bio);
-int dst_start_export(struct dst_node *n);
-
-int __init dst_export_init(void);
-void dst_export_exit(void);
-
-/* Private structure for export block IO requests */
-struct dst_export_priv
-{
-	struct list_head		request_entry;
-	struct dst_state		*state;
-	struct bio			*bio;
-	struct dst_cmd			cmd;
-};
-
-static inline void dst_trans_get(struct dst_trans *t)
-{
-	atomic_inc(&t->refcnt);
-}
-
-struct dst_trans *dst_trans_search(struct dst_node *node, dst_gen_t gen);
-int dst_trans_remove(struct dst_trans *t);
-int dst_trans_remove_nolock(struct dst_trans *t);
-void dst_trans_put(struct dst_trans *t);
-
-/*
- * Convert bio into network command.
- */
-static inline void dst_bio_to_cmd(struct bio *bio, struct dst_cmd *cmd,
-		u32 command, u64 id)
-{
-	cmd->cmd = command;
-	cmd->flags = (bio->bi_flags << BIO_POOL_BITS) >> BIO_POOL_BITS;
-	cmd->rw = bio->bi_rw;
-	cmd->size = bio->bi_size;
-	cmd->csize = 0;
-	cmd->id = id;
-	cmd->sector = bio->bi_sector;
-};
-
-int dst_trans_send(struct dst_trans *t);
-int dst_trans_crypto(struct dst_trans *t);
-
-int dst_node_crypto_init(struct dst_node *n, struct dst_crypto_ctl *ctl);
-void dst_node_crypto_exit(struct dst_node *n);
-
-static inline int dst_need_crypto(struct dst_node *n)
-{
-	struct dst_crypto_ctl *c = &n->crypto;
-	/*
-	 * Logical OR is appropriate here, but boolean one produces
-	 * more optimal code, so it is used instead.
-	 */
-	return (c->hash_algo[0] | c->cipher_algo[0]);
-}
-
-int dst_node_trans_init(struct dst_node *n, unsigned int size);
-void dst_node_trans_exit(struct dst_node *n);
-
-/*
- * Pool of threads.
- * Ready list contains threads currently free to be used,
- * active one contains threads with some work scheduled for them.
- * Caller can wait in given queue when thread is ready.
- */
-struct thread_pool
-{
-	int			thread_num;
-	struct mutex		thread_lock;
-	struct list_head	ready_list, active_list;
-
-	wait_queue_head_t	wait;
-};
-
-void thread_pool_del_worker(struct thread_pool *p);
-void thread_pool_del_worker_id(struct thread_pool *p, unsigned int id);
-int thread_pool_add_worker(struct thread_pool *p,
-		char *name,
-		unsigned int id,
-		void *(* init)(void *data),
-		void (* cleanup)(void *data),
-		void *data);
-
-void thread_pool_destroy(struct thread_pool *p);
-struct thread_pool *thread_pool_create(int num, char *name,
-		void *(* init)(void *data),
-		void (* cleanup)(void *data),
-		void *data);
-
-int thread_pool_schedule(struct thread_pool *p,
-		int (* setup)(void *stored_private, void *setup_data),
-		int (* action)(void *stored_private, void *setup_data),
-		void *setup_data, long timeout);
-int thread_pool_schedule_private(struct thread_pool *p,
-		int (* setup)(void *private, void *data),
-		int (* action)(void *private, void *data),
-		void *data, long timeout, void *id);
-
-#endif /* __KERNEL__ */
-#endif /* __DST_H */