From 68ac64cd3fd89fdaa091701f6ab98a9065e9b1b5 Mon Sep 17 00:00:00 2001
From: Russell King <rmk@dyn-67.arm.linux.org.uk>
Date: Sun, 30 Apr 2006 11:13:50 +0100
Subject: [SERIAL] Clean up serial locking when obtaining a reference to a port

The locking for the uart_port is over complicated, and can be
simplified if we introduce a flag to indicate that a port is "dead"
and will be removed.

This also helps the validator because it removes a case of non-nested
unlock ordering.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---
 include/linux/serial_core.h | 1 +
 1 file changed, 1 insertion(+)

(limited to 'include/linux')

diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index c32e60e79dea..bd14858121ea 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -254,6 +254,7 @@ struct uart_port {
 #define UPF_CONS_FLOW		((__force upf_t) (1 << 23))
 #define UPF_SHARE_IRQ		((__force upf_t) (1 << 24))
 #define UPF_BOOT_AUTOCONF	((__force upf_t) (1 << 28))
+#define UPF_DEAD		((__force upf_t) (1 << 30))
 #define UPF_IOREMAP		((__force upf_t) (1 << 31))
 
 #define UPF_CHANGE_MASK		((__force upf_t) (0x17fff))
-- 
cgit v1.2.3


From 1498221d51a43d5fa1a580618591497d90f957d9 Mon Sep 17 00:00:00 2001
From: Stephen Hemminger <shemminger@osdl.org>
Date: Sat, 6 May 2006 17:55:11 -0700
Subject: [CLASS DEVICE]: add attribute_group creation

Extend the support of attribute groups in class_device's to allow
groups to be created as part of the registration process. This allows
network device's to avoid race between registration and creating
groups.

Note that unlike attributes that are a property of the class object,
the groups are a property of the class_device object. This is done
because there are different types of network devices (wireless for
example).

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/base/class.c   | 32 ++++++++++++++++++++++++++++++++
 include/linux/device.h |  2 ++
 2 files changed, 34 insertions(+)

(limited to 'include/linux')

diff --git a/drivers/base/class.c b/drivers/base/class.c
index 0e71dff327cd..b1ea4df85c7d 100644
--- a/drivers/base/class.c
+++ b/drivers/base/class.c
@@ -456,6 +456,35 @@ static void class_device_remove_attrs(struct class_device * cd)
 	}
 }
 
+static int class_device_add_groups(struct class_device * cd)
+{
+	int i;
+	int error = 0;
+
+	if (cd->groups) {
+		for (i = 0; cd->groups[i]; i++) {
+			error = sysfs_create_group(&cd->kobj, cd->groups[i]);
+			if (error) {
+				while (--i >= 0)
+					sysfs_remove_group(&cd->kobj, cd->groups[i]);
+				goto out;
+			}
+		}
+	}
+out:
+	return error;
+}
+
+static void class_device_remove_groups(struct class_device * cd)
+{
+	int i;
+	if (cd->groups) {
+		for (i = 0; cd->groups[i]; i++) {
+			sysfs_remove_group(&cd->kobj, cd->groups[i]);
+		}
+	}
+}
+
 static ssize_t show_dev(struct class_device *class_dev, char *buf)
 {
 	return print_dev_t(buf, class_dev->devt);
@@ -559,6 +588,8 @@ int class_device_add(struct class_device *class_dev)
 				  class_name);
 	}
 
+	class_device_add_groups(class_dev);
+
 	kobject_uevent(&class_dev->kobj, KOBJ_ADD);
 
 	/* notify any interfaces this device is now here */
@@ -672,6 +703,7 @@ void class_device_del(struct class_device *class_dev)
 	if (class_dev->devt_attr)
 		class_device_remove_file(class_dev, class_dev->devt_attr);
 	class_device_remove_attrs(class_dev);
+	class_device_remove_groups(class_dev);
 
 	kobject_uevent(&class_dev->kobj, KOBJ_REMOVE);
 	kobject_del(&class_dev->kobj);
diff --git a/include/linux/device.h b/include/linux/device.h
index f6e72a65a3f2..e8e53b9accc6 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -200,6 +200,7 @@ extern int class_device_create_file(struct class_device *,
  * @node: for internal use by the driver core only.
  * @kobj: for internal use by the driver core only.
  * @devt_attr: for internal use by the driver core only.
+ * @groups: optional additional groups to be created
  * @dev: if set, a symlink to the struct device is created in the sysfs
  * directory for this struct class device.
  * @class_data: pointer to whatever you want to store here for this struct
@@ -228,6 +229,7 @@ struct class_device {
 	struct device		* dev;		/* not necessary, but nice to have */
 	void			* class_data;	/* class-specific data */
 	struct class_device	*parent;	/* parent of this child device, if there is one */
+	struct attribute_group  ** groups;	/* optional groups */
 
 	void	(*release)(struct class_device *dev);
 	int	(*uevent)(struct class_device *dev, char **envp,
-- 
cgit v1.2.3


From fe9925b551a95fae6ec61470c79f8b701a2fe928 Mon Sep 17 00:00:00 2001
From: Stephen Hemminger <shemminger@osdl.org>
Date: Sat, 6 May 2006 17:56:03 -0700
Subject: [NET]: Create netdev attribute_groups with class_device_add

Atomically create attributes when class device is added. This avoids
the race between registering class_device (which generates hotplug
event), and the creation of attribute groups.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 include/linux/netdevice.h |  2 ++
 net/core/dev.c            |  2 +-
 net/core/net-sysfs.c      | 49 ++++++++++++-----------------------------------
 3 files changed, 15 insertions(+), 38 deletions(-)

(limited to 'include/linux')

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 01db7b88a2b1..309f9190a922 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -506,6 +506,8 @@ struct net_device
 
 	/* class/net/name entry */
 	struct class_device	class_dev;
+	/* space for optional statistics and wireless sysfs groups */
+	struct attribute_group  *sysfs_groups[3];
 };
 
 #define	NETDEV_ALIGN		32
diff --git a/net/core/dev.c b/net/core/dev.c
index 3bad1afc89fa..9ab3cfa58466 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -3043,11 +3043,11 @@ void netdev_run_todo(void)
 
 		switch(dev->reg_state) {
 		case NETREG_REGISTERING:
-			dev->reg_state = NETREG_REGISTERED;
 			err = netdev_register_sysfs(dev);
 			if (err)
 				printk(KERN_ERR "%s: failed sysfs registration (%d)\n",
 				       dev->name, err);
+			dev->reg_state = NETREG_REGISTERED;
 			break;
 
 		case NETREG_UNREGISTERING:
diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index c12990c9c603..47a6fceb6771 100644
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -29,7 +29,7 @@ static const char fmt_ulong[] = "%lu\n";
 
 static inline int dev_isalive(const struct net_device *dev) 
 {
-	return dev->reg_state == NETREG_REGISTERED;
+	return dev->reg_state <= NETREG_REGISTERED;
 }
 
 /* use same locking rules as GIF* ioctl's */
@@ -445,58 +445,33 @@ static struct class net_class = {
 
 void netdev_unregister_sysfs(struct net_device * net)
 {
-	struct class_device * class_dev = &(net->class_dev);
-
-	if (net->get_stats)
-		sysfs_remove_group(&class_dev->kobj, &netstat_group);
-
-#ifdef WIRELESS_EXT
-	if (net->get_wireless_stats || (net->wireless_handlers &&
-			net->wireless_handlers->get_wireless_stats))
-		sysfs_remove_group(&class_dev->kobj, &wireless_group);
-#endif
-	class_device_del(class_dev);
-
+	class_device_del(&(net->class_dev));
 }
 
 /* Create sysfs entries for network device. */
 int netdev_register_sysfs(struct net_device *net)
 {
 	struct class_device *class_dev = &(net->class_dev);
-	int ret;
+	struct attribute_group **groups = net->sysfs_groups;
 
+	class_device_initialize(class_dev);
 	class_dev->class = &net_class;
 	class_dev->class_data = net;
+	class_dev->groups = groups;
 
+	BUILD_BUG_ON(BUS_ID_SIZE < IFNAMSIZ);
 	strlcpy(class_dev->class_id, net->name, BUS_ID_SIZE);
-	if ((ret = class_device_register(class_dev)))
-		goto out;
 
-	if (net->get_stats &&
-	    (ret = sysfs_create_group(&class_dev->kobj, &netstat_group)))
-		goto out_unreg; 
+	if (net->get_stats)
+		*groups++ = &netstat_group;
 
 #ifdef WIRELESS_EXT
-	if (net->get_wireless_stats || (net->wireless_handlers &&
-			net->wireless_handlers->get_wireless_stats)) {
-		ret = sysfs_create_group(&class_dev->kobj, &wireless_group);
-		if (ret)
-			goto out_cleanup;
-	}
-	return 0;
-out_cleanup:
-	if (net->get_stats)
-		sysfs_remove_group(&class_dev->kobj, &netstat_group);
-#else
-	return 0;
+	if (net->get_wireless_stats
+	    || (net->wireless_handlers && net->wireless_handlers->get_wireless_stats))
+		*groups++ = &wireless_group;
 #endif
 
-out_unreg:
-	printk(KERN_WARNING "%s: sysfs attribute registration failed %d\n",
-	       net->name, ret);
-	class_device_unregister(class_dev);
-out:
-	return ret;
+	return class_device_add(class_dev);
 }
 
 int netdev_sysfs_init(void)
-- 
cgit v1.2.3


From d324031245abbb54e4e0321004430826052b6c37 Mon Sep 17 00:00:00 2001
From: Stephen Hemminger <shemminger@osdl.org>
Date: Mon, 8 May 2006 15:11:26 -0700
Subject: sky2: backout NAPI reschedule

This is a backout of earlier patch.

The whole rescheduling hack was a bad idea. It doesn't really solve
the problem and it makes the code more complicated for no good reason.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
---
 drivers/net/sky2.c        | 20 ++++----------------
 include/linux/netdevice.h | 18 ++++++++----------
 2 files changed, 12 insertions(+), 26 deletions(-)

(limited to 'include/linux')

diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index 227df9876a2c..76da74fbe859 100644
--- a/drivers/net/sky2.c
+++ b/drivers/net/sky2.c
@@ -2105,7 +2105,6 @@ static int sky2_poll(struct net_device *dev0, int *budget)
 	int work_done = 0;
 	u32 status = sky2_read32(hw, B0_Y2_SP_EISR);
 
- restart_poll:
 	if (unlikely(status & ~Y2_IS_STAT_BMU)) {
 		if (status & Y2_IS_HW_ERR)
 			sky2_hw_intr(hw);
@@ -2136,7 +2135,7 @@ static int sky2_poll(struct net_device *dev0, int *budget)
 	}
 
 	if (status & Y2_IS_STAT_BMU) {
-		work_done += sky2_status_intr(hw, work_limit - work_done);
+		work_done = sky2_status_intr(hw, work_limit);
 		*budget -= work_done;
 		dev0->quota -= work_done;
 
@@ -2148,22 +2147,9 @@ static int sky2_poll(struct net_device *dev0, int *budget)
 
 	mod_timer(&hw->idle_timer, jiffies + HZ);
 
-	local_irq_disable();
-	__netif_rx_complete(dev0);
+	netif_rx_complete(dev0);
 
 	status = sky2_read32(hw, B0_Y2_SP_LISR);
-
-	if (unlikely(status)) {
-		/* More work pending, try and keep going */
-		if (__netif_rx_schedule_prep(dev0)) {
-			__netif_rx_reschedule(dev0, work_done);
-			status = sky2_read32(hw, B0_Y2_SP_EISR);
-			local_irq_enable();
-			goto restart_poll;
-		}
-	}
-
-	local_irq_enable();
 	return 0;
 }
 
@@ -2181,6 +2167,8 @@ static irqreturn_t sky2_intr(int irq, void *dev_id, struct pt_regs *regs)
 	prefetch(&hw->st_le[hw->st_idx]);
 	if (likely(__netif_rx_schedule_prep(dev0)))
 		__netif_rx_schedule(dev0);
+	else
+		printk(KERN_DEBUG PFX "irq race detected\n");
 
 	return IRQ_HANDLED;
 }
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 309f9190a922..a461b51d6076 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -831,21 +831,19 @@ static inline void netif_rx_schedule(struct net_device *dev)
 		__netif_rx_schedule(dev);
 }
 
-
-static inline void  __netif_rx_reschedule(struct net_device *dev, int undo)
-{
-	dev->quota += undo;
-	list_add_tail(&dev->poll_list, &__get_cpu_var(softnet_data).poll_list);
-	__raise_softirq_irqoff(NET_RX_SOFTIRQ);
-}
-
-/* Try to reschedule poll. Called by dev->poll() after netif_rx_complete(). */
+/* Try to reschedule poll. Called by dev->poll() after netif_rx_complete().
+ * Do not inline this?
+ */
 static inline int netif_rx_reschedule(struct net_device *dev, int undo)
 {
 	if (netif_rx_schedule_prep(dev)) {
 		unsigned long flags;
+
+		dev->quota += undo;
+
 		local_irq_save(flags);
-		__netif_rx_reschedule(dev, undo);
+		list_add_tail(&dev->poll_list, &__get_cpu_var(softnet_data).poll_list);
+		__raise_softirq_irqoff(NET_RX_SOFTIRQ);
 		local_irq_restore(flags);
 		return 1;
 	}
-- 
cgit v1.2.3


From b17a7c179dd3ce7d04373fddf660eda21efc9db9 Mon Sep 17 00:00:00 2001
From: Stephen Hemminger <shemminger@osdl.org>
Date: Wed, 10 May 2006 13:21:17 -0700
Subject: [NET]: Do sysfs registration as part of register_netdevice.

The last step of netdevice registration was being done by a delayed
call, but because it was delayed, it was impossible to return any error
code if the class_device registration failed.

Side effects:
 * one state in registration process is unnecessary.
 * register_netdevice can sleep inside class_device registration/hotplug
 * code in netdev_run_todo only does unregistration so it is simpler.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 include/linux/netdevice.h |  3 +--
 net/core/dev.c            | 63 ++++++++++++++++++++---------------------------
 2 files changed, 28 insertions(+), 38 deletions(-)

(limited to 'include/linux')

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index a461b51d6076..f4169bbb60eb 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -433,8 +433,7 @@ struct net_device
 
 	/* register/unregister state machine */
 	enum { NETREG_UNINITIALIZED=0,
-	       NETREG_REGISTERING,	/* called register_netdevice */
-	       NETREG_REGISTERED,	/* completed register todo */
+	       NETREG_REGISTERED,	/* completed register_netdevice */
 	       NETREG_UNREGISTERING,	/* called unregister_netdevice */
 	       NETREG_UNREGISTERED,	/* completed unregister todo */
 	       NETREG_RELEASED,		/* called free_netdev */
diff --git a/net/core/dev.c b/net/core/dev.c
index ced57430f6d8..2dce673a039b 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2777,6 +2777,8 @@ int register_netdevice(struct net_device *dev)
 	BUG_ON(dev_boot_phase);
 	ASSERT_RTNL();
 
+	might_sleep();
+
 	/* When net_device's are persistent, this will be fatal. */
 	BUG_ON(dev->reg_state != NETREG_UNINITIALIZED);
 
@@ -2863,6 +2865,11 @@ int register_netdevice(struct net_device *dev)
 	if (!dev->rebuild_header)
 		dev->rebuild_header = default_rebuild_header;
 
+	ret = netdev_register_sysfs(dev);
+	if (ret)
+		goto out_err;
+	dev->reg_state = NETREG_REGISTERED;
+
 	/*
 	 *	Default initial state at registry is that the
 	 *	device is present.
@@ -2878,14 +2885,11 @@ int register_netdevice(struct net_device *dev)
 	hlist_add_head(&dev->name_hlist, head);
 	hlist_add_head(&dev->index_hlist, dev_index_hash(dev->ifindex));
 	dev_hold(dev);
-	dev->reg_state = NETREG_REGISTERING;
 	write_unlock_bh(&dev_base_lock);
 
 	/* Notify protocols, that a new device appeared. */
 	raw_notifier_call_chain(&netdev_chain, NETDEV_REGISTER, dev);
 
-	/* Finish registration after unlock */
-	net_set_todo(dev);
 	ret = 0;
 
 out:
@@ -3008,7 +3012,7 @@ static void netdev_wait_allrefs(struct net_device *dev)
  *
  * We are invoked by rtnl_unlock() after it drops the semaphore.
  * This allows us to deal with problems:
- * 1) We can create/delete sysfs objects which invoke hotplug
+ * 1) We can delete sysfs objects which invoke hotplug
  *    without deadlocking with linkwatch via keventd.
  * 2) Since we run with the RTNL semaphore not held, we can sleep
  *    safely in order to wait for the netdev refcnt to drop to zero.
@@ -3017,8 +3021,6 @@ static DEFINE_MUTEX(net_todo_run_mutex);
 void netdev_run_todo(void)
 {
 	struct list_head list = LIST_HEAD_INIT(list);
-	int err;
-
 
 	/* Need to guard against multiple cpu's getting out of order. */
 	mutex_lock(&net_todo_run_mutex);
@@ -3041,40 +3043,29 @@ void netdev_run_todo(void)
 			= list_entry(list.next, struct net_device, todo_list);
 		list_del(&dev->todo_list);
 
-		switch(dev->reg_state) {
-		case NETREG_REGISTERING:
-			err = netdev_register_sysfs(dev);
-			if (err)
-				printk(KERN_ERR "%s: failed sysfs registration (%d)\n",
-				       dev->name, err);
-			dev->reg_state = NETREG_REGISTERED;
-			break;
-
-		case NETREG_UNREGISTERING:
-			netdev_unregister_sysfs(dev);
-			dev->reg_state = NETREG_UNREGISTERED;
-
-			netdev_wait_allrefs(dev);
+		if (unlikely(dev->reg_state != NETREG_UNREGISTERING)) {
+			printk(KERN_ERR "network todo '%s' but state %d\n",
+			       dev->name, dev->reg_state);
+			dump_stack();
+			continue;
+		}
 
-			/* paranoia */
-			BUG_ON(atomic_read(&dev->refcnt));
-			BUG_TRAP(!dev->ip_ptr);
-			BUG_TRAP(!dev->ip6_ptr);
-			BUG_TRAP(!dev->dn_ptr);
+		netdev_unregister_sysfs(dev);
+		dev->reg_state = NETREG_UNREGISTERED;
 
+		netdev_wait_allrefs(dev);
 
-			/* It must be the very last action, 
-			 * after this 'dev' may point to freed up memory.
-			 */
-			if (dev->destructor)
-				dev->destructor(dev);
-			break;
+		/* paranoia */
+		BUG_ON(atomic_read(&dev->refcnt));
+		BUG_TRAP(!dev->ip_ptr);
+		BUG_TRAP(!dev->ip6_ptr);
+		BUG_TRAP(!dev->dn_ptr);
 
-		default:
-			printk(KERN_ERR "network todo '%s' but state %d\n",
-			       dev->name, dev->reg_state);
-			break;
-		}
+		/* It must be the very last action,
+		 * after this 'dev' may point to freed up memory.
+		 */
+		if (dev->destructor)
+			dev->destructor(dev);
 	}
 
 out:
-- 
cgit v1.2.3


From 4c1b46226ce4424a93b8ac544e37afb26c8a72c6 Mon Sep 17 00:00:00 2001
From: Francois Romieu <romieu@fr.zoreil.com>
Date: Wed, 10 May 2006 12:48:57 -0700
Subject: dl2k: use DMA_48BIT_MASK constant

Typo will be harder with this one.

Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
---
 drivers/net/dl2k.c          | 12 ++++++------
 include/linux/dma-mapping.h |  1 +
 2 files changed, 7 insertions(+), 6 deletions(-)

(limited to 'include/linux')

diff --git a/drivers/net/dl2k.c b/drivers/net/dl2k.c
index 1f3627470c95..1ddefd281213 100644
--- a/drivers/net/dl2k.c
+++ b/drivers/net/dl2k.c
@@ -765,7 +765,7 @@ rio_free_tx (struct net_device *dev, int irq)
 			break;
 		skb = np->tx_skbuff[entry];
 		pci_unmap_single (np->pdev,
-				  np->tx_ring[entry].fraginfo & 0xffffffffffff,
+				  np->tx_ring[entry].fraginfo & DMA_48BIT_MASK,
 				  skb->len, PCI_DMA_TODEVICE);
 		if (irq)
 			dev_kfree_skb_irq (skb);
@@ -893,7 +893,7 @@ receive_packet (struct net_device *dev)
 			/* Small skbuffs for short packets */
 			if (pkt_len > copy_thresh) {
 				pci_unmap_single (np->pdev,
-						  desc->fraginfo & 0xffffffffffff,
+						  desc->fraginfo & DMA_48BIT_MASK,
 						  np->rx_buf_sz,
 						  PCI_DMA_FROMDEVICE);
 				skb_put (skb = np->rx_skbuff[entry], pkt_len);
@@ -901,7 +901,7 @@ receive_packet (struct net_device *dev)
 			} else if ((skb = dev_alloc_skb (pkt_len + 2)) != NULL) {
 				pci_dma_sync_single_for_cpu(np->pdev,
 				  			    desc->fraginfo & 
-							    	0xffffffffffff,
+							    	DMA_48BIT_MASK,
 							    np->rx_buf_sz,
 							    PCI_DMA_FROMDEVICE);
 				skb->dev = dev;
@@ -913,7 +913,7 @@ receive_packet (struct net_device *dev)
 				skb_put (skb, pkt_len);
 				pci_dma_sync_single_for_device(np->pdev,
 				  			       desc->fraginfo &
-							       	 0xffffffffffff,
+							       	 DMA_48BIT_MASK,
 							       np->rx_buf_sz,
 							       PCI_DMA_FROMDEVICE);
 			}
@@ -1800,7 +1800,7 @@ rio_close (struct net_device *dev)
 		skb = np->rx_skbuff[i];
 		if (skb) {
 			pci_unmap_single(np->pdev, 
-					 np->rx_ring[i].fraginfo & 0xffffffffffff,
+					 np->rx_ring[i].fraginfo & DMA_48BIT_MASK,
 					 skb->len, PCI_DMA_FROMDEVICE);
 			dev_kfree_skb (skb);
 			np->rx_skbuff[i] = NULL;
@@ -1810,7 +1810,7 @@ rio_close (struct net_device *dev)
 		skb = np->tx_skbuff[i];
 		if (skb) {
 			pci_unmap_single(np->pdev, 
-					 np->tx_ring[i].fraginfo & 0xffffffffffff,
+					 np->tx_ring[i].fraginfo & DMA_48BIT_MASK,
 					 skb->len, PCI_DMA_TODEVICE);
 			dev_kfree_skb (skb);
 			np->tx_skbuff[i] = NULL;
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index ff61817082fa..635690cf3e3d 100644
--- a/include/linux/dma-mapping.h
+++ b/include/linux/dma-mapping.h
@@ -14,6 +14,7 @@ enum dma_data_direction {
 };
 
 #define DMA_64BIT_MASK	0xffffffffffffffffULL
+#define DMA_48BIT_MASK	0x0000ffffffffffffULL
 #define DMA_40BIT_MASK	0x000000ffffffffffULL
 #define DMA_39BIT_MASK	0x0000007fffffffffULL
 #define DMA_32BIT_MASK	0x00000000ffffffffULL
-- 
cgit v1.2.3


From cd41e28e2d0f198ad56840bf8ba13cb41b129bab Mon Sep 17 00:00:00 2001
From: Mauro Carvalho Chehab <mchehab@infradead.org>
Date: Sun, 9 Apr 2006 15:43:41 -0300
Subject: V4L/DVB (3774): Create V4L1 config options

V4L1 API is depreciated and should be removed soon from kernel. This patch
adds two new options, one to disable V4L1 drivers, and another to disable
V4L1 compat module. This way, it would be easy to check what still depends
on V4L1 stuff, allowing also to test if app works fine with V4L2 only support.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
---
 drivers/media/Kconfig                       | 45 ++++++++++++++++---
 drivers/media/common/Kconfig                |  1 +
 drivers/media/dvb/ttpci/Kconfig             | 12 +++---
 drivers/media/radio/Kconfig                 | 30 ++++++-------
 drivers/media/video/Kconfig                 | 67 +++++++++++++++--------------
 drivers/media/video/Makefile                |  3 +-
 drivers/media/video/bt8xx/Kconfig           |  2 +-
 drivers/media/video/cx88/cx88-video.c       |  2 +
 drivers/media/video/em28xx/Kconfig          |  2 +-
 drivers/media/video/et61x251/Kconfig        |  2 +-
 drivers/media/video/pwc/Kconfig             |  2 +-
 drivers/media/video/saa7134/saa7134-video.c |  2 +
 drivers/media/video/sn9c102/Kconfig         |  2 +-
 drivers/media/video/usbvideo/Kconfig        |  6 +--
 drivers/media/video/vivi.c                  |  4 ++
 drivers/media/video/zc0301/Kconfig          |  2 +-
 include/linux/videodev2.h                   |  5 +++
 17 files changed, 118 insertions(+), 71 deletions(-)

(limited to 'include/linux')

diff --git a/drivers/media/Kconfig b/drivers/media/Kconfig
index fffc711c260c..344d83aae3ec 100644
--- a/drivers/media/Kconfig
+++ b/drivers/media/Kconfig
@@ -8,22 +8,54 @@ config VIDEO_DEV
 	tristate "Video For Linux"
 	---help---
 	  Support for audio/video capture and overlay devices and FM radio
-	  cards. The exact capabilities of each device vary. User tools for
-	  this are available from
-	  <ftp://ftp.uk.linux.org/pub/linux/video4linux/>.
+	  cards. The exact capabilities of each device vary.
 
 	  This kernel includes support for the new Video for Linux Two API,
 	  (V4L2) as well as the original system. Drivers and applications
 	  need to be rewritten to use V4L2, but drivers for popular cards
 	  and applications for most video capture functions already exist.
 
-	  Documentation for the original API is included in the file
-	  <file:Documentation/video4linux/API.html>.  Documentation for V4L2 is
-	  available on the web at <http://bytesex.org/v4l/>.
+	  Additional info and docs are available on the web at
+	  <http://linuxtv.org>
+
+	  Documentation for V4L2 is also available on the web at
+	  <http://bytesex.org/v4l/>.
 
 	  To compile this driver as a module, choose M here: the
 	  module will be called videodev.
 
+config VIDEO_V4L1
+	boolean "Enable Video For Linux API 1 (DEPRECATED)"
+	depends on VIDEO_DEV
+	select VIDEO_V4L1_COMPAT
+	default y
+	---help---
+	  Enables a compatibility API used by most V4L2 devices to allow
+	  its usage with legacy applications that supports only V4L1 api.
+
+	  If you are unsure as to whether this is required, answer Y.
+
+config VIDEO_V4L1_COMPAT
+	boolean "Enable Video For Linux API 1 compatible Layer"
+	depends on VIDEO_DEV
+	default y
+	---help---
+	  This api were developed to be used at Kernel 2.2 and 2.4, but
+	  lacks support for several video standards. There are several
+	  drivers at kernel that still depends on it.
+
+	  Documentation for the original API is included in the file
+	  <Documentation/video4linux/API.html>.
+
+	  User tools for this are available from
+	  <ftp://ftp.uk.linux.org/pub/linux/video4linux/>.
+
+	  If you are unsure as to whether this is required, answer Y.
+
+config VIDEO_V4L2
+	tristate
+	default y
+
 source "drivers/media/video/Kconfig"
 
 source "drivers/media/radio/Kconfig"
@@ -65,4 +97,3 @@ config USB_DABUSB
 	  module will be called dabusb.
 
 endmenu
-
diff --git a/drivers/media/common/Kconfig b/drivers/media/common/Kconfig
index 6a901a0268e1..9c45b983e0de 100644
--- a/drivers/media/common/Kconfig
+++ b/drivers/media/common/Kconfig
@@ -4,6 +4,7 @@ config VIDEO_SAA7146
 
 config VIDEO_SAA7146_VV
 	tristate
+	select VIDEO_V4L2
 	select VIDEO_BUF
 	select VIDEO_VIDEOBUF
 	select VIDEO_SAA7146
diff --git a/drivers/media/dvb/ttpci/Kconfig b/drivers/media/dvb/ttpci/Kconfig
index 5b2aadb8385c..c26e23291511 100644
--- a/drivers/media/dvb/ttpci/Kconfig
+++ b/drivers/media/dvb/ttpci/Kconfig
@@ -1,8 +1,7 @@
 config DVB_AV7110
 	tristate "AV7110 cards"
-	depends on DVB_CORE && PCI
+	depends on DVB_CORE && PCI && VIDEO_V4L1
 	select FW_LOADER
-	select VIDEO_DEV
 	select VIDEO_SAA7146_VV
 	select DVB_VES1820
 	select DVB_VES1X93
@@ -59,7 +58,7 @@ config DVB_AV7110_OSD
 
 config DVB_BUDGET
 	tristate "Budget cards"
-	depends on DVB_CORE && PCI
+	depends on DVB_CORE && PCI && VIDEO_V4L1
 	select VIDEO_SAA7146
 	select DVB_STV0299
 	select DVB_VES1X93
@@ -80,7 +79,7 @@ config DVB_BUDGET
 
 config DVB_BUDGET_CI
 	tristate "Budget cards with onboard CI connector"
-	depends on DVB_CORE && PCI
+	depends on DVB_CORE && PCI && VIDEO_V4L1
 	select VIDEO_SAA7146
 	select DVB_STV0297
 	select DVB_STV0299
@@ -100,8 +99,7 @@ config DVB_BUDGET_CI
 
 config DVB_BUDGET_AV
 	tristate "Budget cards with analog video inputs"
-	depends on DVB_CORE && PCI
-	select VIDEO_DEV
+	depends on DVB_CORE && PCI && VIDEO_V4L1
 	select VIDEO_SAA7146_VV
 	select DVB_STV0299
 	select DVB_TDA1004X
@@ -119,7 +117,7 @@ config DVB_BUDGET_AV
 
 config DVB_BUDGET_PATCH
 	tristate "AV7110 cards with Budget Patch"
-	depends on DVB_CORE && DVB_BUDGET
+	depends on DVB_CORE && DVB_BUDGET && VIDEO_V4L1
 	select DVB_AV7110
 	select DVB_STV0299
 	select DVB_VES1X93
diff --git a/drivers/media/radio/Kconfig b/drivers/media/radio/Kconfig
index d318be383de6..3fff75763693 100644
--- a/drivers/media/radio/Kconfig
+++ b/drivers/media/radio/Kconfig
@@ -7,7 +7,7 @@ menu "Radio Adapters"
 
 config RADIO_CADET
 	tristate "ADS Cadet AM/FM Tuner"
-	depends on ISA && VIDEO_DEV
+	depends on ISA && VIDEO_V4L1
 	---help---
 	  Choose Y here if you have one of these AM/FM radio cards, and then
 	  fill in the port address below.
@@ -25,7 +25,7 @@ config RADIO_CADET
 
 config RADIO_RTRACK
 	tristate "AIMSlab RadioTrack (aka RadioReveal) support"
-	depends on ISA && VIDEO_DEV
+	depends on ISA && VIDEO_V4L1
 	---help---
 	  Choose Y here if you have one of these FM radio cards, and then fill
 	  in the port address below.
@@ -59,7 +59,7 @@ config RADIO_RTRACK_PORT
 
 config RADIO_RTRACK2
 	tristate "AIMSlab RadioTrack II support"
-	depends on ISA && VIDEO_DEV
+	depends on ISA && VIDEO_V4L1
 	---help---
 	  Choose Y here if you have this FM radio card, and then fill in the
 	  port address below.
@@ -82,7 +82,7 @@ config RADIO_RTRACK2_PORT
 
 config RADIO_AZTECH
 	tristate "Aztech/Packard Bell Radio"
-	depends on ISA && VIDEO_DEV
+	depends on ISA && VIDEO_V4L1
 	---help---
 	  Choose Y here if you have one of these FM radio cards, and then fill
 	  in the port address below.
@@ -106,7 +106,7 @@ config RADIO_AZTECH_PORT
 
 config RADIO_GEMTEK
 	tristate "GemTek Radio Card support"
-	depends on ISA && VIDEO_DEV
+	depends on ISA && VIDEO_V4L1
 	---help---
 	  Choose Y here if you have this FM radio card, and then fill in the
 	  port address below.
@@ -131,7 +131,7 @@ config RADIO_GEMTEK_PORT
 
 config RADIO_GEMTEK_PCI
 	tristate "GemTek PCI Radio Card support"
-	depends on VIDEO_DEV && PCI
+	depends on VIDEO_V4L1 && PCI
 	---help---
 	  Choose Y here if you have this PCI FM radio card.
 
@@ -145,7 +145,7 @@ config RADIO_GEMTEK_PCI
 
 config RADIO_MAXIRADIO
 	tristate "Guillemot MAXI Radio FM 2000 radio"
-	depends on VIDEO_DEV && PCI
+	depends on VIDEO_V4L1 && PCI
 	---help---
 	  Choose Y here if you have this radio card.  This card may also be
 	  found as Gemtek PCI FM.
@@ -160,7 +160,7 @@ config RADIO_MAXIRADIO
 
 config RADIO_MAESTRO
 	tristate "Maestro on board radio"
-	depends on VIDEO_DEV
+	depends on VIDEO_V4L1
 	---help---
 	  Say Y here to directly support the on-board radio tuner on the
 	  Maestro 2 or 2E sound card.
@@ -175,7 +175,7 @@ config RADIO_MAESTRO
 
 config RADIO_MIROPCM20
 	tristate "miroSOUND PCM20 radio"
-	depends on ISA && VIDEO_DEV && SOUND_ACI_MIXER
+	depends on ISA && VIDEO_V4L1 && SOUND_ACI_MIXER
 	---help---
 	  Choose Y here if you have this FM radio card. You also need to say Y
 	  to "ACI mixer (miroSOUND PCM1-pro/PCM12/PCM20 radio)" (in "Sound")
@@ -208,7 +208,7 @@ config RADIO_MIROPCM20_RDS
 
 config RADIO_SF16FMI
 	tristate "SF16FMI Radio"
-	depends on ISA && VIDEO_DEV
+	depends on ISA && VIDEO_V4L1
 	---help---
 	  Choose Y here if you have one of these FM radio cards.  If you
 	  compile the driver into the kernel and your card is not PnP one, you
@@ -225,7 +225,7 @@ config RADIO_SF16FMI
 
 config RADIO_SF16FMR2
 	tristate "SF16FMR2 Radio"
-	depends on ISA && VIDEO_DEV
+	depends on ISA && VIDEO_V4L1
 	---help---
 	  Choose Y here if you have one of these FM radio cards.
 
@@ -239,7 +239,7 @@ config RADIO_SF16FMR2
 
 config RADIO_TERRATEC
 	tristate "TerraTec ActiveRadio ISA Standalone"
-	depends on ISA && VIDEO_DEV
+	depends on ISA && VIDEO_V4L1
 	---help---
 	  Choose Y here if you have this FM radio card, and then fill in the
 	  port address below. (TODO)
@@ -268,7 +268,7 @@ config RADIO_TERRATEC_PORT
 
 config RADIO_TRUST
 	tristate "Trust FM radio card"
-	depends on ISA && VIDEO_DEV
+	depends on ISA && VIDEO_V4L1
 	help
 	  This is a driver for the Trust FM radio cards. Say Y if you have
 	  such a card and want to use it under Linux.
@@ -286,7 +286,7 @@ config RADIO_TRUST_PORT
 
 config RADIO_TYPHOON
 	tristate "Typhoon Radio (a.k.a. EcoRadio)"
-	depends on ISA && VIDEO_DEV
+	depends on ISA && VIDEO_V4L1
 	---help---
 	  Choose Y here if you have one of these FM radio cards, and then fill
 	  in the port address and the frequency used for muting below.
@@ -330,7 +330,7 @@ config RADIO_TYPHOON_MUTEFREQ
 
 config RADIO_ZOLTRIX
 	tristate "Zoltrix Radio"
-	depends on ISA && VIDEO_DEV
+	depends on ISA && VIDEO_V4L1
 	---help---
 	  Choose Y here if you have one of these FM radio cards, and then fill
 	  in the port address below.
diff --git a/drivers/media/video/Kconfig b/drivers/media/video/Kconfig
index 85888a8a93c9..bff9d8f51dab 100644
--- a/drivers/media/video/Kconfig
+++ b/drivers/media/video/Kconfig
@@ -2,10 +2,10 @@
 # Multimedia Video device configuration
 #
 
-menu "Video For Linux"
+menu "Video Capture Adapters"
 	depends on VIDEO_DEV
 
-comment "Video Adapters"
+comment "Video Capture Adapters"
 
 config VIDEO_ADV_DEBUG
 	bool "Enable advanced debug functionality"
@@ -20,7 +20,7 @@ source "drivers/media/video/bt8xx/Kconfig"
 
 config VIDEO_SAA6588
 	tristate "SAA6588 Radio Chip RDS decoder support on BT848 cards"
-	depends on VIDEO_DEV && I2C && VIDEO_BT848
+	depends on I2C && VIDEO_BT848
 
 	help
 	  Support for  Radio Data System (RDS) decoder. This allows seeing
@@ -32,7 +32,7 @@ config VIDEO_SAA6588
 
 config VIDEO_PMS
 	tristate "Mediavision Pro Movie Studio Video For Linux"
-	depends on VIDEO_DEV && ISA
+	depends on ISA && VIDEO_V4L1
 	help
 	  Say Y if you have such a thing.
 
@@ -41,7 +41,7 @@ config VIDEO_PMS
 
 config VIDEO_PLANB
 	tristate "PlanB Video-In on PowerMac"
-	depends on PPC_PMAC && VIDEO_DEV && BROKEN
+	depends on PPC_PMAC && VIDEO_V4L1 && BROKEN
 	help
 	  PlanB is the V4L driver for the PowerMac 7x00/8x00 series video
 	  input hardware. If you want to experiment with this, say Y.
@@ -52,7 +52,7 @@ config VIDEO_PLANB
 
 config VIDEO_BWQCAM
 	tristate "Quickcam BW Video For Linux"
-	depends on VIDEO_DEV && PARPORT
+	depends on PARPORT && VIDEO_V4L1
 	help
 	  Say Y have if you the black and white version of the QuickCam
 	  camera. See the next option for the color version.
@@ -62,7 +62,7 @@ config VIDEO_BWQCAM
 
 config VIDEO_CQCAM
 	tristate "QuickCam Colour Video For Linux (EXPERIMENTAL)"
-	depends on EXPERIMENTAL && VIDEO_DEV && PARPORT
+	depends on EXPERIMENTAL && PARPORT && VIDEO_V4L1
 	help
 	  This is the video4linux driver for the colour version of the
 	  Connectix QuickCam.  If you have one of these cameras, say Y here,
@@ -73,7 +73,7 @@ config VIDEO_CQCAM
 
 config VIDEO_W9966
 	tristate "W9966CF Webcam (FlyCam Supra and others) Video For Linux"
-	depends on PARPORT_1284 && VIDEO_DEV && PARPORT
+	depends on PARPORT_1284 && PARPORT && VIDEO_V4L1
 	help
 	  Video4linux driver for Winbond's w9966 based Webcams.
 	  Currently tested with the LifeView FlyCam Supra.
@@ -86,7 +86,7 @@ config VIDEO_W9966
 
 config VIDEO_CPIA
 	tristate "CPiA Video For Linux"
-	depends on VIDEO_DEV
+	depends on VIDEO_V4L1
 	---help---
 	  This is the video4linux driver for cameras based on Vision's CPiA
 	  (Colour Processor Interface ASIC), such as the Creative Labs Video
@@ -123,7 +123,7 @@ source "drivers/media/video/cpia2/Kconfig"
 
 config VIDEO_SAA5246A
 	tristate "SAA5246A, SAA5281 Teletext processor"
-	depends on VIDEO_DEV && I2C
+	depends on I2C && VIDEO_V4L1
 	help
 	  Support for I2C bus based teletext using the SAA5246A or SAA5281
 	  chip. Useful only if you live in Europe.
@@ -150,7 +150,7 @@ config TUNER_3036
 
 config VIDEO_VINO
 	tristate "SGI Vino Video For Linux (EXPERIMENTAL)"
-	depends on VIDEO_DEV && I2C && SGI_IP22 && EXPERIMENTAL
+	depends on I2C && SGI_IP22 && EXPERIMENTAL && VIDEO_V4L1
 	select I2C_ALGO_SGI
 	help
 	  Say Y here to build in support for the Vino video input system found
@@ -158,7 +158,7 @@ config VIDEO_VINO
 
 config VIDEO_STRADIS
 	tristate "Stradis 4:2:2 MPEG-2 video driver  (EXPERIMENTAL)"
-	depends on EXPERIMENTAL && VIDEO_DEV && PCI
+	depends on EXPERIMENTAL && PCI && VIDEO_V4L1
 	help
 	  Say Y here to enable support for the Stradis 4:2:2 MPEG-2 video
 	  driver for PCI.  There is a product page at
@@ -166,7 +166,7 @@ config VIDEO_STRADIS
 
 config VIDEO_ZORAN
 	tristate "Zoran ZR36057/36067 Video For Linux"
-	depends on VIDEO_DEV && PCI && I2C_ALGOBIT
+	depends on PCI && I2C_ALGOBIT && VIDEO_V4L1
 	help
 	  Say Y for support for MJPEG capture cards based on the Zoran
 	  36057/36067 PCI controller chipset. This includes the Iomega
@@ -214,7 +214,7 @@ config VIDEO_ZORAN_LML33R10
 
 config VIDEO_ZR36120
 	tristate "Zoran ZR36120/36125 Video For Linux"
-	depends on VIDEO_DEV && PCI && I2C && BROKEN
+	depends on PCI && I2C && VIDEO_V4L1 && BROKEN
 	help
 	  Support for ZR36120/ZR36125 based frame grabber/overlay boards.
 	  This includes the Victor II, WaveWatcher, Video Wonder, Maxi-TV,
@@ -226,7 +226,7 @@ config VIDEO_ZR36120
 
 config VIDEO_MEYE
 	tristate "Sony Vaio Picturebook Motion Eye Video For Linux"
-	depends on VIDEO_DEV && PCI && SONYPI
+	depends on PCI && SONYPI && VIDEO_V4L1
 	---help---
 	  This is the video4linux driver for the Motion Eye camera found
 	  in the Vaio Picturebook laptops. Please read the material in
@@ -242,7 +242,7 @@ source "drivers/media/video/saa7134/Kconfig"
 
 config VIDEO_MXB
 	tristate "Siemens-Nixdorf 'Multimedia eXtension Board'"
-	depends on VIDEO_DEV && PCI
+	depends on PCI && VIDEO_V4L1
 	select VIDEO_SAA7146_VV
 	select VIDEO_TUNER
 	---help---
@@ -254,8 +254,9 @@ config VIDEO_MXB
 
 config VIDEO_DPC
 	tristate "Philips-Semiconductors 'dpc7146 demonstration board'"
-	depends on VIDEO_DEV && PCI
+	depends on PCI && VIDEO_V4L1
 	select VIDEO_SAA7146_VV
+	select VIDEO_V4L2
 	---help---
 	  This is a video4linux driver for the 'dpc7146 demonstration
 	  board' by Philips-Semiconductors. It's the reference design
@@ -268,8 +269,9 @@ config VIDEO_DPC
 
 config VIDEO_HEXIUM_ORION
 	tristate "Hexium HV-PCI6 and Orion frame grabber"
-	depends on VIDEO_DEV && PCI
+	depends on PCI && VIDEO_V4L1
 	select VIDEO_SAA7146_VV
+	select VIDEO_V4L2
 	---help---
 	  This is a video4linux driver for the Hexium HV-PCI6 and
 	  Orion frame grabber cards by Hexium.
@@ -279,8 +281,9 @@ config VIDEO_HEXIUM_ORION
 
 config VIDEO_HEXIUM_GEMINI
 	tristate "Hexium Gemini frame grabber"
-	depends on VIDEO_DEV && PCI
+	depends on PCI && VIDEO_V4L1
 	select VIDEO_SAA7146_VV
+	select VIDEO_V4L2
 	---help---
 	  This is a video4linux driver for the Hexium Gemini frame
 	  grabber card by Hexium. Please note that the Gemini Dual
@@ -293,7 +296,7 @@ source "drivers/media/video/cx88/Kconfig"
 
 config VIDEO_OVCAMCHIP
 	tristate "OmniVision Camera Chip support"
-	depends on VIDEO_DEV && I2C
+	depends on I2C && VIDEO_V4L1
 	---help---
 	  Support for the OmniVision OV6xxx and OV7xxx series of camera chips.
 	  This driver is intended to be used with the ov511 and w9968cf USB
@@ -304,7 +307,7 @@ config VIDEO_OVCAMCHIP
 
 config VIDEO_M32R_AR
 	tristate "AR devices"
-	depends on M32R
+	depends on M32R && VIDEO_V4L1
 	---help---
 	  This is a video4linux driver for the Renesas AR (Artificial Retina)
 	  camera module.
@@ -365,17 +368,17 @@ config VIDEO_WM8739
 source "drivers/media/video/cx25840/Kconfig"
 
 config VIDEO_SAA711X
-	tristate "Philips SAA7113/4/5 video decoders"
-	depends on VIDEO_DEV && I2C && EXPERIMENTAL
+	tristate "Philips SAA7113/4/5 video decoders (OBSOLETED)"
+	depends on VIDEO_V4L1 && I2C && EXPERIMENTAL
 	---help---
-	  Support for the Philips SAA7113/4/5 video decoders.
+	  Old support for the Philips SAA7113/4 video decoders.
 
 	  To compile this driver as a module, choose M here: the
 	  module will be called saa7115.
 
 config VIDEO_SAA7127
 	tristate "Philips SAA7127/9 digital video encoders"
-	depends on VIDEO_DEV && I2C && EXPERIMENTAL
+	depends on VIDEO_V4L2 && I2C && EXPERIMENTAL
 	---help---
 	  Support for the Philips SAA7127/9 digital video encoders.
 
@@ -384,7 +387,7 @@ config VIDEO_SAA7127
 
 config VIDEO_UPD64031A
 	tristate "NEC Electronics uPD64031A Ghost Reduction"
-	depends on VIDEO_DEV && I2C && EXPERIMENTAL
+	depends on VIDEO_V4L2 && I2C && EXPERIMENTAL
 	---help---
 	  Support for the NEC Electronics uPD64031A Ghost Reduction
 	  video chip. It is most often found in NTSC TV cards made for
@@ -396,7 +399,7 @@ config VIDEO_UPD64031A
 
 config VIDEO_UPD64083
 	tristate "NEC Electronics uPD64083 3-Dimensional Y/C separation"
-	depends on VIDEO_DEV && I2C && EXPERIMENTAL
+	depends on VIDEO_V4L2 && I2C && EXPERIMENTAL
 	---help---
 	  Support for the NEC Electronics uPD64083 3-Dimensional Y/C
 	  separation video chip. It is used to improve the quality of
@@ -418,7 +421,7 @@ source "drivers/media/video/em28xx/Kconfig"
 
 config USB_DSBR
 	tristate "D-Link USB FM radio support (EXPERIMENTAL)"
-	depends on USB && VIDEO_DEV && EXPERIMENTAL
+	depends on USB && VIDEO_V4L1 && EXPERIMENTAL
 	---help---
 	  Say Y here if you want to connect this type of radio to your
 	  computer's USB port. Note that the audio is not digital, and
@@ -434,7 +437,7 @@ source "drivers/media/video/et61x251/Kconfig"
 
 config USB_OV511
 	tristate "USB OV511 Camera support"
-	depends on USB && VIDEO_DEV
+	depends on USB && VIDEO_V4L1
 	---help---
 	  Say Y here if you want to connect this type of camera to your
 	  computer's USB port. See <file:Documentation/video4linux/ov511.txt>
@@ -445,7 +448,7 @@ config USB_OV511
 
 config USB_SE401
 	tristate "USB SE401 Camera support"
-	depends on USB && VIDEO_DEV
+	depends on USB && VIDEO_V4L1
 	---help---
 	  Say Y here if you want to connect this type of camera to your
 	  computer's USB port. See <file:Documentation/video4linux/se401.txt>
@@ -458,7 +461,7 @@ source "drivers/media/video/sn9c102/Kconfig"
 
 config USB_STV680
 	tristate "USB STV680 (Pencam) Camera support"
-	depends on USB && VIDEO_DEV
+	depends on USB && VIDEO_V4L1
 	---help---
 	  Say Y here if you want to connect this type of camera to your
 	  computer's USB port. This includes the Pencam line of cameras.
@@ -470,7 +473,7 @@ config USB_STV680
 
 config USB_W9968CF
 	tristate "USB W996[87]CF JPEG Dual Mode Camera support"
-	depends on USB && VIDEO_DEV && I2C
+	depends on USB && VIDEO_V4L1 && I2C
 	select VIDEO_OVCAMCHIP
 	---help---
 	  Say Y here if you want support for cameras based on OV681 or
diff --git a/drivers/media/video/Makefile b/drivers/media/video/Makefile
index b3ea2d63db9b..11b06dac347b 100644
--- a/drivers/media/video/Makefile
+++ b/drivers/media/video/Makefile
@@ -10,7 +10,8 @@ tuner-objs	:=	tuner-core.o tuner-types.o tuner-simple.o \
 
 msp3400-objs	:=	msp3400-driver.o msp3400-kthreads.o
 
-obj-$(CONFIG_VIDEO_DEV) += videodev.o v4l2-common.o v4l1-compat.o compat_ioctl32.o
+obj-$(CONFIG_VIDEO_DEV) += videodev.o v4l2-common.o compat_ioctl32.o
+obj-$(CONFIG_VIDEO_V4L1_COMPAT) += v4l1-compat.o
 
 obj-$(CONFIG_VIDEO_BT848) += bt8xx/
 obj-$(CONFIG_VIDEO_BT848) += tvaudio.o tda7432.o tda9875.o ir-kbd-i2c.o
diff --git a/drivers/media/video/bt8xx/Kconfig b/drivers/media/video/bt8xx/Kconfig
index 085477c12612..153f6a4a96c9 100644
--- a/drivers/media/video/bt8xx/Kconfig
+++ b/drivers/media/video/bt8xx/Kconfig
@@ -1,6 +1,6 @@
 config VIDEO_BT848
 	tristate "BT848 Video For Linux"
-	depends on VIDEO_DEV && PCI && I2C
+	depends on VIDEO_DEV && PCI && I2C && VIDEO_V4L2
 	select I2C_ALGOBIT
 	select FW_LOADER
 	select VIDEO_BTCX
diff --git a/drivers/media/video/cx88/cx88-video.c b/drivers/media/video/cx88/cx88-video.c
index 72a417b31745..694d1d80ff3f 100644
--- a/drivers/media/video/cx88/cx88-video.c
+++ b/drivers/media/video/cx88/cx88-video.c
@@ -35,8 +35,10 @@
 #include "cx88.h"
 #include <media/v4l2-common.h>
 
+#ifdef CONFIG_VIDEO_V4L1_COMPAT
 /* Include V4L1 specific functions. Should be removed soon */
 #include <linux/videodev.h>
+#endif
 
 MODULE_DESCRIPTION("v4l2 driver module for cx2388x based TV cards");
 MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
diff --git a/drivers/media/video/em28xx/Kconfig b/drivers/media/video/em28xx/Kconfig
index 5a793ae7cc23..dfb15bfb83dc 100644
--- a/drivers/media/video/em28xx/Kconfig
+++ b/drivers/media/video/em28xx/Kconfig
@@ -1,6 +1,6 @@
 config VIDEO_EM28XX
 	tristate "Empia EM2800/2820/2840 USB video capture support"
-	depends on VIDEO_DEV && USB && I2C
+	depends on VIDEO_V4L1 && USB && I2C
 	select VIDEO_BUF
 	select VIDEO_TUNER
 	select VIDEO_TVEEPROM
diff --git a/drivers/media/video/et61x251/Kconfig b/drivers/media/video/et61x251/Kconfig
index 6c43a90c6569..c6bff705688d 100644
--- a/drivers/media/video/et61x251/Kconfig
+++ b/drivers/media/video/et61x251/Kconfig
@@ -1,6 +1,6 @@
 config USB_ET61X251
 	tristate "USB ET61X[12]51 PC Camera Controller support"
-	depends on USB && VIDEO_DEV
+	depends on USB && VIDEO_V4L1
 	---help---
 	  Say Y here if you want support for cameras based on Etoms ET61X151
 	  or ET61X251 PC Camera Controllers.
diff --git a/drivers/media/video/pwc/Kconfig b/drivers/media/video/pwc/Kconfig
index 86376556f108..53cbc950f95c 100644
--- a/drivers/media/video/pwc/Kconfig
+++ b/drivers/media/video/pwc/Kconfig
@@ -1,6 +1,6 @@
 config USB_PWC
 	tristate "USB Philips Cameras"
-	depends on USB && VIDEO_DEV
+	depends on USB && VIDEO_V4L1
 	---help---
 	  Say Y or M here if you want to use one of these Philips & OEM
 	  webcams:
diff --git a/drivers/media/video/saa7134/saa7134-video.c b/drivers/media/video/saa7134/saa7134-video.c
index aeef80f88a6b..e4156ec9c6d7 100644
--- a/drivers/media/video/saa7134/saa7134-video.c
+++ b/drivers/media/video/saa7134/saa7134-video.c
@@ -31,8 +31,10 @@
 #include "saa7134.h"
 #include <media/v4l2-common.h>
 
+#ifdef CONFIG_VIDEO_V4L1_COMPAT
 /* Include V4L1 specific functions. Should be removed soon */
 #include <linux/videodev.h>
+#endif
 
 /* ------------------------------------------------------------------ */
 
diff --git a/drivers/media/video/sn9c102/Kconfig b/drivers/media/video/sn9c102/Kconfig
index 55f2bc11964b..cf552e6b8ecf 100644
--- a/drivers/media/video/sn9c102/Kconfig
+++ b/drivers/media/video/sn9c102/Kconfig
@@ -1,6 +1,6 @@
 config USB_SN9C102
 	tristate "USB SN9C10x PC Camera Controller support"
-	depends on USB && VIDEO_DEV
+	depends on USB && VIDEO_V4L1
 	---help---
 	  Say Y here if you want support for cameras based on SONiX SN9C101,
 	  SN9C102 or SN9C103 PC Camera Controllers.
diff --git a/drivers/media/video/usbvideo/Kconfig b/drivers/media/video/usbvideo/Kconfig
index 08a5d20bb2c0..39269a2c5635 100644
--- a/drivers/media/video/usbvideo/Kconfig
+++ b/drivers/media/video/usbvideo/Kconfig
@@ -3,7 +3,7 @@ config VIDEO_USBVIDEO
 
 config USB_VICAM
 	tristate "USB 3com HomeConnect (aka vicam) support (EXPERIMENTAL)"
-	depends on USB && VIDEO_DEV && EXPERIMENTAL
+	depends on USB && VIDEO_V4L1 && EXPERIMENTAL
 	select VIDEO_USBVIDEO
 	---help---
 	  Say Y here if you have 3com homeconnect camera (vicam).
@@ -13,7 +13,7 @@ config USB_VICAM
 
 config USB_IBMCAM
 	tristate "USB IBM (Xirlink) C-it Camera support"
-	depends on USB && VIDEO_DEV
+	depends on USB && VIDEO_V4L1
 	select VIDEO_USBVIDEO
 	---help---
 	  Say Y here if you want to connect a IBM "C-It" camera, also known as
@@ -28,7 +28,7 @@ config USB_IBMCAM
 
 config USB_KONICAWC
 	tristate "USB Konica Webcam support"
-	depends on USB && VIDEO_DEV
+	depends on USB && VIDEO_V4L1
 	select VIDEO_USBVIDEO
 	---help---
 	  Say Y here if you want support for webcams based on a Konica
diff --git a/drivers/media/video/vivi.c b/drivers/media/video/vivi.c
index 5e813404d068..9e42224b46b6 100644
--- a/drivers/media/video/vivi.c
+++ b/drivers/media/video/vivi.c
@@ -26,6 +26,10 @@
 #include <linux/random.h>
 #include <linux/version.h>
 #include <linux/videodev2.h>
+#ifdef CONFIG_VIDEO_V4L1_COMPAT
+/* Include V4L1 specific functions. Should be removed soon */
+#include <linux/videodev.h>
+#endif
 #include <linux/interrupt.h>
 #include <media/video-buf.h>
 #include <media/v4l2-common.h>
diff --git a/drivers/media/video/zc0301/Kconfig b/drivers/media/video/zc0301/Kconfig
index c3bf886b80cd..115833e4f4dd 100644
--- a/drivers/media/video/zc0301/Kconfig
+++ b/drivers/media/video/zc0301/Kconfig
@@ -1,6 +1,6 @@
 config USB_ZC0301
 	tristate "USB ZC0301 Image Processor and Control Chip support"
-	depends on USB && VIDEO_DEV
+	depends on USB && VIDEO_V4L1
 	---help---
 	  Say Y here if you want support for cameras based on the ZC0301
 	  Image Processor and Control Chip.
diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h
index d7670ec1ec1e..ad7fa9c86c10 100644
--- a/include/linux/videodev2.h
+++ b/include/linux/videodev2.h
@@ -1141,8 +1141,13 @@ extern char *v4l2_type_names[];
 /*  Compatibility layer interface  --  v4l1-compat module */
 typedef int (*v4l2_kioctl)(struct inode *inode, struct file *file,
 			   unsigned int cmd, void *arg);
+
+#ifdef CONFIG_VIDEO_V4L1_COMPAT
 int v4l_compat_translate_ioctl(struct inode *inode, struct file *file,
 			       int cmd, void *arg, v4l2_kioctl driver_ioctl);
+#else
+#define v4l_compat_translate_ioctl(inode,file,cmd,arg,ioctl) -EINVAL
+#endif
 
 /* 32 Bits compatibility layer for 64 bits processors */
 extern long v4l_compat_ioctl32(struct file *file, unsigned int cmd,
-- 
cgit v1.2.3


From 986733e01d258c26107f1da9d8d47c718349ad2f Mon Sep 17 00:00:00 2001
From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Mon, 15 May 2006 09:43:58 -0700
Subject: [PATCH] RCU: introduce rcu_needs_cpu() interface

With "Paul E. McKenney" <paulmck@us.ibm.com>

Introduce rcu_needs_cpu() interface.  This can be used to tell if there
will be a new rcu batch on a cpu soon by looking at the curlist pointer.
This can be used to avoid to enter a tickless idle state where the cpu
would miss that a new batch is ready when rcu_start_batch would be called
on a different cpu.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: "Paul E. McKenney" <paulmck@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 include/linux/rcupdate.h |  1 +
 kernel/rcupdate.c        | 19 +++++++++++++++++++
 2 files changed, 20 insertions(+)

(limited to 'include/linux')

diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h
index 5673008b61e1..970284f571a6 100644
--- a/include/linux/rcupdate.h
+++ b/include/linux/rcupdate.h
@@ -132,6 +132,7 @@ static inline void rcu_bh_qsctr_inc(int cpu)
 }
 
 extern int rcu_pending(int cpu);
+extern int rcu_needs_cpu(int cpu);
 
 /**
  * rcu_read_lock - mark the beginning of an RCU read-side critical section.
diff --git a/kernel/rcupdate.c b/kernel/rcupdate.c
index 6d32ff26f948..2058f88c7bbb 100644
--- a/kernel/rcupdate.c
+++ b/kernel/rcupdate.c
@@ -479,12 +479,31 @@ static int __rcu_pending(struct rcu_ctrlblk *rcp, struct rcu_data *rdp)
 	return 0;
 }
 
+/*
+ * Check to see if there is any immediate RCU-related work to be done
+ * by the current CPU, returning 1 if so.  This function is part of the
+ * RCU implementation; it is -not- an exported member of the RCU API.
+ */
 int rcu_pending(int cpu)
 {
 	return __rcu_pending(&rcu_ctrlblk, &per_cpu(rcu_data, cpu)) ||
 		__rcu_pending(&rcu_bh_ctrlblk, &per_cpu(rcu_bh_data, cpu));
 }
 
+/*
+ * Check to see if any future RCU-related work will need to be done
+ * by the current CPU, even if none need be done immediately, returning
+ * 1 if so.  This function is part of the RCU implementation; it is -not-
+ * an exported member of the RCU API.
+ */
+int rcu_needs_cpu(int cpu)
+{
+	struct rcu_data *rdp = &per_cpu(rcu_data, cpu);
+	struct rcu_data *rdp_bh = &per_cpu(rcu_bh_data, cpu);
+
+	return (!!rdp->curlist || !!rdp_bh->curlist || rcu_pending(cpu));
+}
+
 void rcu_check_callbacks(int cpu, int user)
 {
 	if (user || 
-- 
cgit v1.2.3


From 5e376613899076396d0c97de67ad072587267370 Mon Sep 17 00:00:00 2001
From: Trent Piepho <xyzzy@speakeasy.org>
Date: Mon, 15 May 2006 09:44:06 -0700
Subject: [PATCH] symbol_put_addr() locks kernel

Even since a previous patch:

Fix race between CONFIG_DEBUG_SLABALLOC and modules
Sun, 27 Jun 2004 17:55:19 +0000 (17:55 +0000)
http://www.kernel.org/git/?p=linux/kernel/git/torvalds/old-2.6-bkcvs.git;a=commit;h=92b3db26d31cf21b70e3c1eadc56c179506d8fbe

The function symbol_put_addr() will deadlock the kernel.

symbol_put_addr() would acquire modlist_lock, then while holding the lock call
two functions kernel_text_address() and module_text_address() which also try
to acquire the same lock.  This deadlocks the kernel of course.

This patch changes symbol_put_addr() to not acquire the modlist_lock, it
doesn't need it since it never looks at the module list directly.  Also, it
now uses core_kernel_text() instead of kernel_text_address().  The latter has
an additional check for addr inside a module, but we don't need to do that
since we call module_text_address() (the same function kernel_text_address
uses) ourselves.

Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
Cc: Zwane Mwaikambo <zwane@fsmlabs.com>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 include/linux/kernel.h |  1 +
 kernel/extable.c       |  2 +-
 kernel/module.c        | 12 ++++++------
 3 files changed, 8 insertions(+), 7 deletions(-)

(limited to 'include/linux')

diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index e1bd0842f6a1..f4fc576ed4c4 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -124,6 +124,7 @@ extern int get_option(char **str, int *pint);
 extern char *get_options(const char *str, int nints, int *ints);
 extern unsigned long long memparse(char *ptr, char **retptr);
 
+extern int core_kernel_text(unsigned long addr);
 extern int __kernel_text_address(unsigned long addr);
 extern int kernel_text_address(unsigned long addr);
 extern int session_of_pgrp(int pgrp);
diff --git a/kernel/extable.c b/kernel/extable.c
index 7501b531ceed..7fe262855317 100644
--- a/kernel/extable.c
+++ b/kernel/extable.c
@@ -40,7 +40,7 @@ const struct exception_table_entry *search_exception_tables(unsigned long addr)
 	return e;
 }
 
-static int core_kernel_text(unsigned long addr)
+int core_kernel_text(unsigned long addr)
 {
 	if (addr >= (unsigned long)_stext &&
 	    addr <= (unsigned long)_etext)
diff --git a/kernel/module.c b/kernel/module.c
index d24deb0dbbc9..bbe04862e1b0 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -705,14 +705,14 @@ EXPORT_SYMBOL(__symbol_put);
 
 void symbol_put_addr(void *addr)
 {
-	unsigned long flags;
+	struct module *modaddr;
 
-	spin_lock_irqsave(&modlist_lock, flags);
-	if (!kernel_text_address((unsigned long)addr))
-		BUG();
+	if (core_kernel_text((unsigned long)addr))
+		return;
 
-	module_put(module_text_address((unsigned long)addr));
-	spin_unlock_irqrestore(&modlist_lock, flags);
+	if (!(modaddr = module_text_address((unsigned long)addr)))
+		BUG();
+	module_put(modaddr);
 }
 EXPORT_SYMBOL_GPL(symbol_put_addr);
 
-- 
cgit v1.2.3


From 39d24e64263cd3211705d3b61ea4171c65030921 Mon Sep 17 00:00:00 2001
From: Mike Kravetz <kravetz@us.ibm.com>
Date: Mon, 15 May 2006 09:44:13 -0700
Subject: [PATCH] add slab_is_available() routine for boot code

slab_is_available() indicates slab based allocators are available for use.
SPARSEMEM code needs to know this as it can be called at various times
during the boot process.

Signed-off-by: Mike Kravetz <kravetz@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 include/linux/slab.h | 1 +
 mm/slab.c            | 8 ++++++++
 mm/sparse.c          | 2 +-
 3 files changed, 10 insertions(+), 1 deletion(-)

(limited to 'include/linux')

diff --git a/include/linux/slab.h b/include/linux/slab.h
index 3af03b19c983..2d985d59c7b8 100644
--- a/include/linux/slab.h
+++ b/include/linux/slab.h
@@ -150,6 +150,7 @@ static inline void *kcalloc(size_t n, size_t size, gfp_t flags)
 
 extern void kfree(const void *);
 extern unsigned int ksize(const void *);
+extern int slab_is_available(void);
 
 #ifdef CONFIG_NUMA
 extern void *kmem_cache_alloc_node(kmem_cache_t *, gfp_t flags, int node);
diff --git a/mm/slab.c b/mm/slab.c
index c32af7e7581e..b1d643b5238d 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -700,6 +700,14 @@ static enum {
 	FULL
 } g_cpucache_up;
 
+/*
+ * used by boot code to determine if it can use slab based allocator
+ */
+int slab_is_available(void)
+{
+	return g_cpucache_up == FULL;
+}
+
 static DEFINE_PER_CPU(struct work_struct, reap_work);
 
 static void free_block(struct kmem_cache *cachep, void **objpp, int len,
diff --git a/mm/sparse.c b/mm/sparse.c
index d7c32de99ee8..c5e89eb9ac8f 100644
--- a/mm/sparse.c
+++ b/mm/sparse.c
@@ -32,7 +32,7 @@ static struct mem_section *sparse_index_alloc(int nid)
 	unsigned long array_size = SECTIONS_PER_ROOT *
 				   sizeof(struct mem_section);
 
-	if (system_state == SYSTEM_RUNNING)
+	if (slab_is_available())
 		section = kmalloc_node(array_size, GFP_KERNEL, nid);
 	else
 		section = alloc_bootmem_node(NODE_DATA(nid), array_size);
-- 
cgit v1.2.3


From e6333fd4ddf7a583480017f535b9ea53c116ab81 Mon Sep 17 00:00:00 2001
From: Hua Zhong <hzhong@gmail.com>
Date: Mon, 15 May 2006 09:44:22 -0700
Subject: [PATCH] fix can_share_swap_page() when !CONFIG_SWAP

can_share_swap_page() is used to check if the page has the last reference.
This avoids allocating a new page for COW if it's the last page.

However, if CONFIG_SWAP is not set, can_share_swap_page() is defined as 0,
thus always causes a copy for the last COW page.  The below simple patch
fixes it.

Signed-off-by: Hua Zhong <hzhong@gmail.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 include/linux/swap.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'include/linux')

diff --git a/include/linux/swap.h b/include/linux/swap.h
index 5b1fdf1cff4f..f03c24719302 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -296,7 +296,7 @@ static inline void disable_swap_token(void)
 #define read_swap_cache_async(swp,vma,addr)	NULL
 #define lookup_swap_cache(swp)			NULL
 #define valid_swaphandles(swp, off)		0
-#define can_share_swap_page(p)			0
+#define can_share_swap_page(p)			(page_mapcount(p) == 1)
 #define move_to_swap_cache(p, swp)		1
 #define move_from_swap_cache(p, i, m)		1
 #define __delete_from_swap_cache(p)		/*NOTHING*/
-- 
cgit v1.2.3


From 4cff33f94fefcce1b3c01a9d1da6bb85fe3cbdfa Mon Sep 17 00:00:00 2001
From: Imre Deak <imre.deak@nokia.com>
Date: Fri, 17 Feb 2006 10:02:18 -0800
Subject: [PATCH] SPI: per-transfer overrides for wordsize and clocking

Some protocols (like one for some bitmap displays) require different clock
speed or word size settings for each transfer in an SPI message. This adds
those parameters to struct spi_transfer.  They are to be used when they are
nonzero; otherwise the defaults from spi_device are to be used.

The patch also adds a setup_transfer callback to spi_bitbang, uses it for
messages that use those overrides, and implements it so that the pure
bitbanging code can help resolve any questions about how it should work.

Signed-off-by: Imre Deak <imre.deak@nokia.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/spi/spi_bitbang.c       | 77 +++++++++++++++++++++++++++++++++--------
 include/linux/spi/spi.h         |  8 +++++
 include/linux/spi/spi_bitbang.h |  6 ++++
 3 files changed, 77 insertions(+), 14 deletions(-)

(limited to 'include/linux')

diff --git a/drivers/spi/spi_bitbang.c b/drivers/spi/spi_bitbang.c
index f037e5593269..0525c99118c3 100644
--- a/drivers/spi/spi_bitbang.c
+++ b/drivers/spi/spi_bitbang.c
@@ -138,6 +138,43 @@ static unsigned bitbang_txrx_32(
 	return t->len - count;
 }
 
+static int
+bitbang_transfer_setup(struct spi_device *spi, struct spi_transfer *t)
+{
+	struct spi_bitbang_cs	*cs = spi->controller_state;
+	u8			bits_per_word;
+	u32			hz;
+
+	if (t) {
+		bits_per_word = t->bits_per_word;
+		hz = t->speed_hz;
+	} else {
+		bits_per_word = 0;
+		hz = 0;
+	}
+
+	/* spi_transfer level calls that work per-word */
+	if (!bits_per_word)
+		bits_per_word = spi->bits_per_word;
+	if (bits_per_word <= 8)
+		cs->txrx_bufs = bitbang_txrx_8;
+	else if (bits_per_word <= 16)
+		cs->txrx_bufs = bitbang_txrx_16;
+	else if (bits_per_word <= 32)
+		cs->txrx_bufs = bitbang_txrx_32;
+	else
+		return -EINVAL;
+
+	/* nsecs = (clock period)/2 */
+	if (!hz)
+		hz = spi->max_speed_hz;
+	cs->nsecs = (1000000000/2) / hz;
+	if (cs->nsecs > MAX_UDELAY_MS * 1000)
+		return -EINVAL;
+
+	return 0;
+}
+
 /**
  * spi_bitbang_setup - default setup for per-word I/O loops
  */
@@ -145,6 +182,7 @@ int spi_bitbang_setup(struct spi_device *spi)
 {
 	struct spi_bitbang_cs	*cs = spi->controller_state;
 	struct spi_bitbang	*bitbang;
+	int			retval;
 
 	if (!spi->max_speed_hz)
 		return -EINVAL;
@@ -160,25 +198,14 @@ int spi_bitbang_setup(struct spi_device *spi)
 	if (!spi->bits_per_word)
 		spi->bits_per_word = 8;
 
-	/* spi_transfer level calls that work per-word */
-	if (spi->bits_per_word <= 8)
-		cs->txrx_bufs = bitbang_txrx_8;
-	else if (spi->bits_per_word <= 16)
-		cs->txrx_bufs = bitbang_txrx_16;
-	else if (spi->bits_per_word <= 32)
-		cs->txrx_bufs = bitbang_txrx_32;
-	else
-		return -EINVAL;
-
 	/* per-word shift register access, in hardware or bitbanging */
 	cs->txrx_word = bitbang->txrx_word[spi->mode & (SPI_CPOL|SPI_CPHA)];
 	if (!cs->txrx_word)
 		return -EINVAL;
 
-	/* nsecs = (clock period)/2 */
-	cs->nsecs = (1000000000/2) / (spi->max_speed_hz);
-	if (cs->nsecs > MAX_UDELAY_MS * 1000)
-		return -EINVAL;
+	retval = bitbang_transfer_setup(spi, NULL);
+	if (retval < 0)
+		return retval;
 
 	dev_dbg(&spi->dev, "%s, mode %d, %u bits/w, %u nsec\n",
 			__FUNCTION__, spi->mode & (SPI_CPOL | SPI_CPHA),
@@ -246,6 +273,8 @@ static void bitbang_work(void *_bitbang)
 		unsigned		tmp;
 		unsigned		cs_change;
 		int			status;
+		int			(*setup_transfer)(struct spi_device *,
+						struct spi_transfer *);
 
 		m = container_of(bitbang->queue.next, struct spi_message,
 				queue);
@@ -262,6 +291,7 @@ static void bitbang_work(void *_bitbang)
 		tmp = 0;
 		cs_change = 1;
 		status = 0;
+		setup_transfer = NULL;
 
 		list_for_each_entry (t, &m->transfers, transfer_list) {
 			if (bitbang->shutdown) {
@@ -269,6 +299,20 @@ static void bitbang_work(void *_bitbang)
 				break;
 			}
 
+			/* override or restore speed and wordsize */
+			if (t->speed_hz || t->bits_per_word) {
+				setup_transfer = bitbang->setup_transfer;
+				if (!setup_transfer) {
+					status = -ENOPROTOOPT;
+					break;
+				}
+			}
+			if (setup_transfer) {
+				status = setup_transfer(spi, t);
+				if (status < 0)
+					break;
+			}
+
 			/* set up default clock polarity, and activate chip;
 			 * this implicitly updates clock and spi modes as
 			 * previously recorded for this device via setup().
@@ -325,6 +369,10 @@ static void bitbang_work(void *_bitbang)
 		m->status = status;
 		m->complete(m->context);
 
+		/* restore speed and wordsize */
+		if (setup_transfer)
+			setup_transfer(spi, NULL);
+
 		/* normally deactivate chipselect ... unless no error and
 		 * cs_change has hinted that the next message will probably
 		 * be for this chip too.
@@ -406,6 +454,7 @@ int spi_bitbang_start(struct spi_bitbang *bitbang)
 		bitbang->use_dma = 0;
 		bitbang->txrx_bufs = spi_bitbang_bufs;
 		if (!bitbang->master->setup) {
+			bitbang->setup_transfer = bitbang_transfer_setup;
 			bitbang->master->setup = spi_bitbang_setup;
 			bitbang->master->cleanup = spi_bitbang_cleanup;
 		}
diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h
index b05f1463a267..caa4665e3fa2 100644
--- a/include/linux/spi/spi.h
+++ b/include/linux/spi/spi.h
@@ -31,6 +31,7 @@ extern struct bus_type spi_bus_type;
  * @master: SPI controller used with the device.
  * @max_speed_hz: Maximum clock rate to be used with this chip
  *	(on this board); may be changed by the device's driver.
+ *	The spi_transfer.speed_hz can override this for each transfer.
  * @chip-select: Chipselect, distinguishing chips handled by "master".
  * @mode: The spi mode defines how data is clocked out and in.
  *	This may be changed by the device's driver.
@@ -38,6 +39,7 @@ extern struct bus_type spi_bus_type;
  * 	like eight or 12 bits are common.  In-memory wordsizes are
  *	powers of two bytes (e.g. 20 bit samples use 32 bits).
  *	This may be changed by the device's driver.
+ *	The spi_transfer.bits_per_word can override this for each transfer.
  * @irq: Negative, or the number passed to request_irq() to receive
  * 	interrupts from this device.
  * @controller_state: Controller's runtime state
@@ -268,6 +270,10 @@ extern struct spi_master *spi_busnum_to_master(u16 busnum);
  * @tx_dma: DMA address of tx_buf, if spi_message.is_dma_mapped
  * @rx_dma: DMA address of rx_buf, if spi_message.is_dma_mapped
  * @len: size of rx and tx buffers (in bytes)
+ * @speed_hz: Select a speed other then the device default for this
+ *      transfer. If 0 the default (from spi_device) is used.
+ * @bits_per_word: select a bits_per_word other then the device default
+ *      for this transfer. If 0 the default (from spi_device) is used.
  * @cs_change: affects chipselect after this transfer completes
  * @delay_usecs: microseconds to delay after this transfer before
  * 	(optionally) changing the chipselect status, then starting
@@ -322,7 +328,9 @@ struct spi_transfer {
 	dma_addr_t	rx_dma;
 
 	unsigned	cs_change:1;
+	u8		bits_per_word;
 	u16		delay_usecs;
+	u32		speed_hz;
 
 	struct list_head transfer_list;
 };
diff --git a/include/linux/spi/spi_bitbang.h b/include/linux/spi/spi_bitbang.h
index c961fe9bf3eb..c954557b757c 100644
--- a/include/linux/spi/spi_bitbang.h
+++ b/include/linux/spi/spi_bitbang.h
@@ -30,6 +30,12 @@ struct spi_bitbang {
 
 	struct spi_master	*master;
 
+	/* setup_transfer() changes clock and/or wordsize to match settings
+	 * for this transfer; zeroes restore defaults from spi_device.
+	 */
+	int	(*setup_transfer)(struct spi_device *spi,
+			struct spi_transfer *t);
+
 	void	(*chipselect)(struct spi_device *spi, int is_on);
 #define	BITBANG_CS_ACTIVE	1	/* normally nCS, active low */
 #define	BITBANG_CS_INACTIVE	0
-- 
cgit v1.2.3


From 747d844ee9a183ff3067bb1181f2a25c50649538 Mon Sep 17 00:00:00 2001
From: David Brownell <david-b@pacbell.net>
Date: Sun, 2 Apr 2006 10:33:37 -0800
Subject: [PATCH] SPI: spi whitespace fixes

This removes superfluous whitespace in the <linux/spi/spi.h> header.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 include/linux/spi/spi.h | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

(limited to 'include/linux')

diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h
index caa4665e3fa2..082006714b85 100644
--- a/include/linux/spi/spi.h
+++ b/include/linux/spi/spi.h
@@ -36,15 +36,15 @@ extern struct bus_type spi_bus_type;
  * @mode: The spi mode defines how data is clocked out and in.
  *	This may be changed by the device's driver.
  * @bits_per_word: Data transfers involve one or more words; word sizes
- * 	like eight or 12 bits are common.  In-memory wordsizes are
+ *	like eight or 12 bits are common.  In-memory wordsizes are
  *	powers of two bytes (e.g. 20 bit samples use 32 bits).
  *	This may be changed by the device's driver.
  *	The spi_transfer.bits_per_word can override this for each transfer.
  * @irq: Negative, or the number passed to request_irq() to receive
- * 	interrupts from this device.
+ *	interrupts from this device.
  * @controller_state: Controller's runtime state
  * @controller_data: Board-specific definitions for controller, such as
- * 	FIFO initialization parameters; from board_info.controller_data
+ *	FIFO initialization parameters; from board_info.controller_data
  *
  * An spi_device is used to interchange data between an SPI slave
  * (usually a discrete chip) and CPU memory.
@@ -145,13 +145,13 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv)
  * struct spi_master - interface to SPI master controller
  * @cdev: class interface to this driver
  * @bus_num: board-specific (and often SOC-specific) identifier for a
- * 	given SPI controller.
+ *	given SPI controller.
  * @num_chipselect: chipselects are used to distinguish individual
- * 	SPI slaves, and are numbered from zero to num_chipselects.
- * 	each slave has a chipselect signal, but it's common that not
- * 	every chipselect is connected to a slave.
+ *	SPI slaves, and are numbered from zero to num_chipselects.
+ *	each slave has a chipselect signal, but it's common that not
+ *	every chipselect is connected to a slave.
  * @setup: updates the device mode and clocking records used by a
- * 	device's SPI controller; protocol code may call this.
+ *	device's SPI controller; protocol code may call this.
  * @transfer: adds a message to the controller's transfer queue.
  * @cleanup: frees controller-specific state
  *
@@ -276,8 +276,8 @@ extern struct spi_master *spi_busnum_to_master(u16 busnum);
  *      for this transfer. If 0 the default (from spi_device) is used.
  * @cs_change: affects chipselect after this transfer completes
  * @delay_usecs: microseconds to delay after this transfer before
- * 	(optionally) changing the chipselect status, then starting
- * 	the next transfer or completing this spi_message.
+ *	(optionally) changing the chipselect status, then starting
+ *	the next transfer or completing this spi_message.
  * @transfer_list: transfers are sequenced through spi_message.transfers
  *
  * SPI transfers always write the same number of bytes as they read.
@@ -364,7 +364,7 @@ struct spi_transfer {
  * and its transfers, ignore them until its completion callback.
  */
 struct spi_message {
-	struct list_head 	transfers;
+	struct list_head	transfers;
 
 	struct spi_device	*spi;
 
@@ -382,7 +382,7 @@ struct spi_message {
 	 */
 
 	/* completion is reported through a callback */
-	void 			(*complete)(void *context);
+	void			(*complete)(void *context);
 	void			*context;
 	unsigned		actual_length;
 	int			status;
-- 
cgit v1.2.3


From ff9f4771b5f017ee0f57629488b6cd7a6ef3d19b Mon Sep 17 00:00:00 2001
From: Kumar Gala <galak@kernel.crashing.org>
Date: Sun, 2 Apr 2006 16:06:35 -0500
Subject: [PATCH] SPI: Renamed bitbang_transfer_setup to
 spi_bitbang_setup_transfer and export it

Renamed bitbang_transfer_setup to follow convention of other exported symbols
from spi-bitbang.  Exported spi_bitbang_setup_transfer to allow users of
spi-bitbang to use the function in their own setup_transfer.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/spi/spi_bitbang.c       | 10 ++++++----
 include/linux/spi/spi_bitbang.h |  2 ++
 2 files changed, 8 insertions(+), 4 deletions(-)

(limited to 'include/linux')

diff --git a/drivers/spi/spi_bitbang.c b/drivers/spi/spi_bitbang.c
index 0525c99118c3..6c3da64d609a 100644
--- a/drivers/spi/spi_bitbang.c
+++ b/drivers/spi/spi_bitbang.c
@@ -138,8 +138,7 @@ static unsigned bitbang_txrx_32(
 	return t->len - count;
 }
 
-static int
-bitbang_transfer_setup(struct spi_device *spi, struct spi_transfer *t)
+int spi_bitbang_setup_transfer(struct spi_device *spi, struct spi_transfer *t)
 {
 	struct spi_bitbang_cs	*cs = spi->controller_state;
 	u8			bits_per_word;
@@ -174,6 +173,7 @@ bitbang_transfer_setup(struct spi_device *spi, struct spi_transfer *t)
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(spi_bitbang_setup_transfer);
 
 /**
  * spi_bitbang_setup - default setup for per-word I/O loops
@@ -203,7 +203,7 @@ int spi_bitbang_setup(struct spi_device *spi)
 	if (!cs->txrx_word)
 		return -EINVAL;
 
-	retval = bitbang_transfer_setup(spi, NULL);
+	retval = spi_bitbang_setup_transfer(spi, NULL);
 	if (retval < 0)
 		return retval;
 
@@ -454,7 +454,9 @@ int spi_bitbang_start(struct spi_bitbang *bitbang)
 		bitbang->use_dma = 0;
 		bitbang->txrx_bufs = spi_bitbang_bufs;
 		if (!bitbang->master->setup) {
-			bitbang->setup_transfer = bitbang_transfer_setup;
+			if (!bitbang->setup_transfer)
+				bitbang->setup_transfer =
+					 spi_bitbang_setup_transfer;
 			bitbang->master->setup = spi_bitbang_setup;
 			bitbang->master->cleanup = spi_bitbang_cleanup;
 		}
diff --git a/include/linux/spi/spi_bitbang.h b/include/linux/spi/spi_bitbang.h
index c954557b757c..16ce178f54d7 100644
--- a/include/linux/spi/spi_bitbang.h
+++ b/include/linux/spi/spi_bitbang.h
@@ -57,6 +57,8 @@ struct spi_bitbang {
 extern int spi_bitbang_setup(struct spi_device *spi);
 extern void spi_bitbang_cleanup(const struct spi_device *spi);
 extern int spi_bitbang_transfer(struct spi_device *spi, struct spi_message *m);
+extern int spi_bitbang_setup_transfer(struct spi_device *spi,
+				      struct spi_transfer *t);
 
 /* start or stop queue processing */
 extern int spi_bitbang_start(struct spi_bitbang *spi);
-- 
cgit v1.2.3


From ccf77cc4af5b048e20cfd9327fcc286cb69c34cc Mon Sep 17 00:00:00 2001
From: David Brownell <david-b@pacbell.net>
Date: Mon, 3 Apr 2006 15:46:22 -0700
Subject: [PATCH] SPI: devices can require LSB-first encodings

Add spi_device hook for LSB-first word encoding, and update all the
(in-tree) controller drivers to reject such devices.  Eventually,
some controller drivers will be updated to support lsb-first encodings
on the wire; no current drivers need this.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/spi/spi_bitbang.c | 11 ++++++++++-
 include/linux/spi/spi.h   |  7 +++++--
 2 files changed, 15 insertions(+), 3 deletions(-)

(limited to 'include/linux')

diff --git a/drivers/spi/spi_bitbang.c b/drivers/spi/spi_bitbang.c
index 6c3da64d609a..0f7f5c64391c 100644
--- a/drivers/spi/spi_bitbang.c
+++ b/drivers/spi/spi_bitbang.c
@@ -187,13 +187,22 @@ int spi_bitbang_setup(struct spi_device *spi)
 	if (!spi->max_speed_hz)
 		return -EINVAL;
 
+	bitbang = spi_master_get_devdata(spi->master);
+
+	/* REVISIT: some systems will want to support devices using lsb-first
+	 * bit encodings on the wire.  In pure software that would be trivial,
+	 * just bitbang_txrx_le_cphaX() routines shifting the other way, and
+	 * some hardware controllers also have this support.
+	 */
+	if ((spi->mode & SPI_LSB_FIRST) != 0)
+		return -EINVAL;
+
 	if (!cs) {
 		cs = kzalloc(sizeof *cs, SLAB_KERNEL);
 		if (!cs)
 			return -ENOMEM;
 		spi->controller_state = cs;
 	}
-	bitbang = spi_master_get_devdata(spi->master);
 
 	if (!spi->bits_per_word)
 		spi->bits_per_word = 8;
diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h
index 082006714b85..77add901691d 100644
--- a/include/linux/spi/spi.h
+++ b/include/linux/spi/spi.h
@@ -35,10 +35,13 @@ extern struct bus_type spi_bus_type;
  * @chip-select: Chipselect, distinguishing chips handled by "master".
  * @mode: The spi mode defines how data is clocked out and in.
  *	This may be changed by the device's driver.
+ *	The "active low" default for chipselect mode can be overridden,
+ *	as can the "MSB first" default for each word in a transfer.
  * @bits_per_word: Data transfers involve one or more words; word sizes
  *	like eight or 12 bits are common.  In-memory wordsizes are
  *	powers of two bytes (e.g. 20 bit samples use 32 bits).
- *	This may be changed by the device's driver.
+ *	This may be changed by the device's driver, or left at the
+ *	default (0) indicating protocol words are eight bit bytes.
  *	The spi_transfer.bits_per_word can override this for each transfer.
  * @irq: Negative, or the number passed to request_irq() to receive
  *	interrupts from this device.
@@ -67,6 +70,7 @@ struct spi_device {
 #define	SPI_MODE_2	(SPI_CPOL|0)
 #define	SPI_MODE_3	(SPI_CPOL|SPI_CPHA)
 #define	SPI_CS_HIGH	0x04			/* chipselect active high? */
+#define	SPI_LSB_FIRST	0x08			/* per-word bits-on-wire */
 	u8			bits_per_word;
 	int			irq;
 	void			*controller_state;
@@ -75,7 +79,6 @@ struct spi_device {
 
 	// likely need more hooks for more protocol options affecting how
 	// the controller talks to each chip, like:
-	//  - bit order (default is wordwise msb-first)
 	//  - memory packing (12 bit samples into low bits, others zeroed)
 	//  - priority
 	//  - drop chipselect after each word
-- 
cgit v1.2.3


From a020ed7521a9737bcf3e34eb880867c60c3c68d0 Mon Sep 17 00:00:00 2001
From: David Brownell <david-b@pacbell.net>
Date: Mon, 3 Apr 2006 15:49:04 -0700
Subject: [PATCH] SPI: busnum == 0 needs to work

We need to be able to have a "SPI bus 0" matching chip numbering; but
that number was wrongly used to flag dynamic allocation of a bus number.

This patch resolves that issue; now negative numbers trigger dynamic alloc.

It also updates the how-to-write-a-controller-driver overview to mention
this stuff.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 Documentation/spi/spi-summary | 34 +++++++++++++++++++++++++++++++++-
 drivers/spi/spi.c             |  4 ++--
 include/linux/spi/spi.h       |  6 +++---
 3 files changed, 38 insertions(+), 6 deletions(-)

(limited to 'include/linux')

diff --git a/Documentation/spi/spi-summary b/Documentation/spi/spi-summary
index a5ffba33a351..068732d32276 100644
--- a/Documentation/spi/spi-summary
+++ b/Documentation/spi/spi-summary
@@ -414,7 +414,33 @@ to get the driver-private data allocated for that device.
 The driver will initialize the fields of that spi_master, including the
 bus number (maybe the same as the platform device ID) and three methods
 used to interact with the SPI core and SPI protocol drivers.  It will
-also initialize its own internal state.
+also initialize its own internal state.  (See below about bus numbering
+and those methods.)
+
+After you initialize the spi_master, then use spi_register_master() to
+publish it to the rest of the system.  At that time, device nodes for
+the controller and any predeclared spi devices will be made available,
+and the driver model core will take care of binding them to drivers.
+
+If you need to remove your SPI controller driver, spi_unregister_master()
+will reverse the effect of spi_register_master().
+
+
+BUS NUMBERING
+
+Bus numbering is important, since that's how Linux identifies a given
+SPI bus (shared SCK, MOSI, MISO).  Valid bus numbers start at zero.  On
+SOC systems, the bus numbers should match the numbers defined by the chip
+manufacturer.  For example, hardware controller SPI2 would be bus number 2,
+and spi_board_info for devices connected to it would use that number.
+
+If you don't have such hardware-assigned bus number, and for some reason
+you can't just assign them, then provide a negative bus number.  That will
+then be replaced by a dynamically assigned number. You'd then need to treat
+this as a non-static configuration (see above).
+
+
+SPI MASTER METHODS
 
     master->setup(struct spi_device *spi)
 	This sets up the device clock rate, SPI mode, and word sizes.
@@ -431,6 +457,9 @@ also initialize its own internal state.
 	state it dynamically associates with that device.  If you do that,
 	be sure to provide the cleanup() method to free that state.
 
+
+SPI MESSAGE QUEUE
+
 The bulk of the driver will be managing the I/O queue fed by transfer().
 
 That queue could be purely conceptual.  For example, a driver used only
@@ -440,6 +469,9 @@ But the queue will probably be very real, using message->queue, PIO,
 often DMA (especially if the root filesystem is in SPI flash), and
 execution contexts like IRQ handlers, tasklets, or workqueues (such
 as keventd).  Your driver can be as fancy, or as simple, as you need.
+Such a transfer() method would normally just add the message to a
+queue, and then start some asynchronous transfer engine (unless it's
+already running).
 
 
 THANKS TO
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 1168ef015887..7a3f733051e9 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -395,7 +395,7 @@ EXPORT_SYMBOL_GPL(spi_alloc_master);
 int __init_or_module
 spi_register_master(struct spi_master *master)
 {
-	static atomic_t		dyn_bus_id = ATOMIC_INIT(0);
+	static atomic_t		dyn_bus_id = ATOMIC_INIT((1<<16) - 1);
 	struct device		*dev = master->cdev.dev;
 	int			status = -ENODEV;
 	int			dynamic = 0;
@@ -404,7 +404,7 @@ spi_register_master(struct spi_master *master)
 		return -ENODEV;
 
 	/* convention:  dynamically assigned bus IDs count down from the max */
-	if (master->bus_num == 0) {
+	if (master->bus_num < 0) {
 		master->bus_num = atomic_dec_return(&dyn_bus_id);
 		dynamic = 1;
 	}
diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h
index 77add901691d..e928c0dcc297 100644
--- a/include/linux/spi/spi.h
+++ b/include/linux/spi/spi.h
@@ -172,13 +172,13 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv)
 struct spi_master {
 	struct class_device	cdev;
 
-	/* other than zero (== assign one dynamically), bus_num is fully
+	/* other than negative (== assign one dynamically), bus_num is fully
 	 * board-specific.  usually that simplifies to being SOC-specific.
-	 * example:  one SOC has three SPI controllers, numbered 1..3,
+	 * example:  one SOC has three SPI controllers, numbered 0..2,
 	 * and one board's schematics might show it using SPI-2.  software
 	 * would normally use bus_num=2 for that controller.
 	 */
-	u16			bus_num;
+	s16			bus_num;
 
 	/* chipselects will be integral to many controllers; some others
 	 * might use board-specific GPIOs.
-- 
cgit v1.2.3


From 2c171bf13423dc5293188cea7f6c2da1720926e2 Mon Sep 17 00:00:00 2001
From: Pavel Pisa <ppisa@pikron.com>
Date: Fri, 19 May 2006 21:48:03 +0100
Subject: [ARM] 3531/1: i.MX/MX1 SD/MMC ensure, that clock are stopped before
 new command and cleanups

Patch from Pavel Pisa

There has been problems that for some paths that clock are not stopped
during new command programming and initiation. Result is issuing
of incorrect command to the card. Some other problems are cleaned too.
Noisy report of known ERRATUM #4 has been suppressed.

Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 drivers/mmc/au1xmmc.c   |  6 +++---
 drivers/mmc/imxmmc.c    | 24 ++++++++++++++----------
 drivers/mmc/mmc.c       |  1 +
 drivers/mmc/mmc_block.c |  1 +
 drivers/mmc/pxamci.c    |  4 ++--
 drivers/mmc/wbsd.c      |  8 ++++----
 include/linux/mmc/mmc.h |  1 +
 7 files changed, 26 insertions(+), 19 deletions(-)

(limited to 'include/linux')

diff --git a/drivers/mmc/au1xmmc.c b/drivers/mmc/au1xmmc.c
index 914d62b24064..5dc4bee7abeb 100644
--- a/drivers/mmc/au1xmmc.c
+++ b/drivers/mmc/au1xmmc.c
@@ -310,7 +310,7 @@ static void au1xmmc_data_complete(struct au1xmmc_host *host, u32 status)
 		}
 		else
 			data->bytes_xfered =
-				(data->blocks * (1 << data->blksz_bits)) -
+				(data->blocks * data->blksz) -
 				host->pio.len;
 	}
 
@@ -575,7 +575,7 @@ static int
 au1xmmc_prepare_data(struct au1xmmc_host *host, struct mmc_data *data)
 {
 
-	int datalen = data->blocks * (1 << data->blksz_bits);
+	int datalen = data->blocks * data->blksz;
 
 	if (dma != 0)
 		host->flags |= HOST_F_DMA;
@@ -596,7 +596,7 @@ au1xmmc_prepare_data(struct au1xmmc_host *host, struct mmc_data *data)
 	if (host->dma.len == 0)
 		return MMC_ERR_TIMEOUT;
 
-	au_writel((1 << data->blksz_bits) - 1, HOST_BLKSIZE(host));
+	au_writel(data->blksz - 1, HOST_BLKSIZE(host));
 
 	if (host->flags & HOST_F_DMA) {
 		int i;
diff --git a/drivers/mmc/imxmmc.c b/drivers/mmc/imxmmc.c
index 79358e223f57..a4eb1d0e7a71 100644
--- a/drivers/mmc/imxmmc.c
+++ b/drivers/mmc/imxmmc.c
@@ -218,8 +218,10 @@ static int imxmci_busy_wait_for_status(struct imxmci_host *host,
 	if(!loops)
 		return 0;
 
-	dev_info(mmc_dev(host->mmc), "busy wait for %d usec in %s, STATUS = 0x%x (0x%x)\n",
-		loops, where, *pstat, stat_mask);
+	/* The busy-wait is expected there for clock <8MHz due to SDHC hardware flaws */
+	if(!(stat_mask & STATUS_END_CMD_RESP) || (host->mmc->ios.clock>=8000000))
+		dev_info(mmc_dev(host->mmc), "busy wait for %d usec in %s, STATUS = 0x%x (0x%x)\n",
+			loops, where, *pstat, stat_mask);
 	return loops;
 }
 
@@ -333,6 +335,9 @@ static void imxmci_start_cmd(struct imxmci_host *host, struct mmc_command *cmd,
 	WARN_ON(host->cmd != NULL);
 	host->cmd = cmd;
 
+	/* Ensure, that clock are stopped else command programming and start fails */
+	imxmci_stop_clock(host);
+
 	if (cmd->flags & MMC_RSP_BUSY)
 		cmdat |= CMD_DAT_CONT_BUSY;
 
@@ -553,7 +558,7 @@ static int imxmci_cpu_driven_data(struct imxmci_host *host, unsigned int *pstat)
 	int trans_done = 0;
 	unsigned int stat = *pstat;
 
-	if(host->actual_bus_width == MMC_BUS_WIDTH_4)
+	if(host->actual_bus_width != MMC_BUS_WIDTH_4)
 		burst_len = 16;
 	else
 		burst_len = 64;
@@ -591,8 +596,7 @@ static int imxmci_cpu_driven_data(struct imxmci_host *host, unsigned int *pstat)
 			stat = MMC_STATUS;
 
 			/* Flush extra bytes from FIFO */
-			while(flush_len >= 2){
-				flush_len -= 2;
+			while(flush_len && !(stat & STATUS_DATA_TRANS_DONE)){
 				i = MMC_BUFFER_ACCESS;
 				stat = MMC_STATUS;
 				stat &= ~STATUS_CRC_READ_ERR; /* Stupid but required there */
@@ -746,10 +750,6 @@ static void imxmci_tasklet_fnc(unsigned long data)
 			data_dir_mask = STATUS_DATA_TRANS_DONE;
 		}
 
-		imxmci_busy_wait_for_status(host, &stat,
-				data_dir_mask,
-				50, "imxmci_tasklet_fnc data");
-
 		if(stat & data_dir_mask) {
 			clear_bit(IMXMCI_PEND_DMA_END_b, &host->pending_events);
 			imxmci_data_done(host, stat);
@@ -865,7 +865,11 @@ static void imxmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 
 		imxmci_stop_clock(host);
 		MMC_CLK_RATE = (prescaler<<3) | clk;
-		imxmci_start_clock(host);
+		/*
+		 * Under my understanding, clock should not be started there, because it would
+		 * initiate SDHC sequencer and send last or random command into card
+		 */
+		/*imxmci_start_clock(host);*/
 
 		dev_dbg(mmc_dev(host->mmc), "MMC_CLK_RATE: 0x%08x\n", MMC_CLK_RATE);
 	} else {
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index 1ca2c8b9c9b5..6201f3086a02 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -951,6 +951,7 @@ static void mmc_read_scrs(struct mmc_host *host)
 		data.timeout_ns = card->csd.tacc_ns * 10;
 		data.timeout_clks = card->csd.tacc_clks * 10;
 		data.blksz_bits = 3;
+		data.blksz = 1 << 3;
 		data.blocks = 1;
 		data.flags = MMC_DATA_READ;
 		data.sg = &sg;
diff --git a/drivers/mmc/mmc_block.c b/drivers/mmc/mmc_block.c
index 06bd1f4cb9b1..e39cc05c64c2 100644
--- a/drivers/mmc/mmc_block.c
+++ b/drivers/mmc/mmc_block.c
@@ -175,6 +175,7 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
 		brq.data.timeout_ns = card->csd.tacc_ns * 10;
 		brq.data.timeout_clks = card->csd.tacc_clks * 10;
 		brq.data.blksz_bits = md->block_bits;
+		brq.data.blksz = 1 << md->block_bits;
 		brq.data.blocks = req->nr_sectors >> (md->block_bits - 9);
 		brq.stop.opcode = MMC_STOP_TRANSMISSION;
 		brq.stop.arg = 0;
diff --git a/drivers/mmc/pxamci.c b/drivers/mmc/pxamci.c
index f97b472085cb..b49368fd96b8 100644
--- a/drivers/mmc/pxamci.c
+++ b/drivers/mmc/pxamci.c
@@ -119,7 +119,7 @@ static void pxamci_setup_data(struct pxamci_host *host, struct mmc_data *data)
 		nob = 0xffff;
 
 	writel(nob, host->base + MMC_NOB);
-	writel(1 << data->blksz_bits, host->base + MMC_BLKLEN);
+	writel(data->blksz, host->base + MMC_BLKLEN);
 
 	clks = (unsigned long long)data->timeout_ns * CLOCKRATE;
 	do_div(clks, 1000000000UL);
@@ -283,7 +283,7 @@ static int pxamci_data_done(struct pxamci_host *host, unsigned int stat)
 	 * data blocks as being in error.
 	 */
 	if (data->error == MMC_ERR_NONE)
-		data->bytes_xfered = data->blocks << data->blksz_bits;
+		data->bytes_xfered = data->blocks * data->blksz;
 	else
 		data->bytes_xfered = 0;
 
diff --git a/drivers/mmc/wbsd.c b/drivers/mmc/wbsd.c
index 39b3d97f891e..8167332d4013 100644
--- a/drivers/mmc/wbsd.c
+++ b/drivers/mmc/wbsd.c
@@ -662,14 +662,14 @@ static void wbsd_prepare_data(struct wbsd_host *host, struct mmc_data *data)
 	unsigned long dmaflags;
 
 	DBGF("blksz %04x blks %04x flags %08x\n",
-		1 << data->blksz_bits, data->blocks, data->flags);
+		data->blksz, data->blocks, data->flags);
 	DBGF("tsac %d ms nsac %d clk\n",
 		data->timeout_ns / 1000000, data->timeout_clks);
 
 	/*
 	 * Calculate size.
 	 */
-	host->size = data->blocks << data->blksz_bits;
+	host->size = data->blocks * data->blksz;
 
 	/*
 	 * Check timeout values for overflow.
@@ -696,12 +696,12 @@ static void wbsd_prepare_data(struct wbsd_host *host, struct mmc_data *data)
 	 * Two bytes are needed for each data line.
 	 */
 	if (host->bus_width == MMC_BUS_WIDTH_1) {
-		blksize = (1 << data->blksz_bits) + 2;
+		blksize = data->blksz + 2;
 
 		wbsd_write_index(host, WBSD_IDX_PBSMSB, (blksize >> 4) & 0xF0);
 		wbsd_write_index(host, WBSD_IDX_PBSLSB, blksize & 0xFF);
 	} else if (host->bus_width == MMC_BUS_WIDTH_4) {
-		blksize = (1 << data->blksz_bits) + 2 * 4;
+		blksize = data->blksz + 2 * 4;
 
 		wbsd_write_index(host, WBSD_IDX_PBSMSB,
 			((blksize >> 4) & 0xF0) | WBSD_DATA_WIDTH);
diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h
index bdc556d88498..03a14a30c46a 100644
--- a/include/linux/mmc/mmc.h
+++ b/include/linux/mmc/mmc.h
@@ -69,6 +69,7 @@ struct mmc_data {
 	unsigned int		timeout_ns;	/* data timeout (in ns, max 80ms) */
 	unsigned int		timeout_clks;	/* data timeout (in clocks) */
 	unsigned int		blksz_bits;	/* data block size */
+	unsigned int		blksz;		/* data block size */
 	unsigned int		blocks;		/* number of blocks */
 	unsigned int		error;		/* data error */
 	unsigned int		flags;
-- 
cgit v1.2.3


From ccf06998fe179ae2cc9517ed1d75433dc0b5032d Mon Sep 17 00:00:00 2001
From: Kumar Gala <galak@kernel.crashing.org>
Date: Sat, 20 May 2006 15:00:15 -0700
Subject: [PATCH] spi: add spi master driver for Freescale MPC83xx SPI
 controller

This driver supports the SPI controller on the MPC83xx SoC devices from
Freescale.  Note, this driver supports only the simple shift register SPI
controller and not the descriptor based CPM or QUICCEngine SPI controller.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 drivers/spi/Kconfig         |  12 ++
 drivers/spi/Makefile        |   1 +
 drivers/spi/spi_mpc83xx.c   | 483 ++++++++++++++++++++++++++++++++++++++++++++
 include/linux/fsl_devices.h |  11 +
 4 files changed, 507 insertions(+)
 create mode 100644 drivers/spi/spi_mpc83xx.c

(limited to 'include/linux')

diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig
index 9ce1d01469b1..3867c6ef24f3 100644
--- a/drivers/spi/Kconfig
+++ b/drivers/spi/Kconfig
@@ -75,6 +75,18 @@ config SPI_BUTTERFLY
 	  inexpensive battery powered microcontroller evaluation board.
 	  This same cable can be used to flash new firmware.
 
+config SPI_MPC83xx
+	tristate "Freescale MPC83xx SPI controller"
+	depends on SPI_MASTER && PPC_83xx && EXPERIMENTAL
+	select SPI_BITBANG
+	help
+	  This enables using the Freescale MPC83xx SPI controller in master
+	  mode.
+
+	  Note, this driver uniquely supports the SPI controller on the MPC83xx
+	  family of PowerPC processors.  The MPC83xx uses a simple set of shift
+	  registers for data (opposed to the CPM based descriptor model).
+
 config SPI_PXA2XX
 	tristate "PXA2xx SSP SPI master"
 	depends on SPI_MASTER && ARCH_PXA && EXPERIMENTAL
diff --git a/drivers/spi/Makefile b/drivers/spi/Makefile
index 1bca5f95de25..5a410caa03c7 100644
--- a/drivers/spi/Makefile
+++ b/drivers/spi/Makefile
@@ -14,6 +14,7 @@ obj-$(CONFIG_SPI_MASTER)		+= spi.o
 obj-$(CONFIG_SPI_BITBANG)		+= spi_bitbang.o
 obj-$(CONFIG_SPI_BUTTERFLY)		+= spi_butterfly.o
 obj-$(CONFIG_SPI_PXA2XX)		+= pxa2xx_spi.o
+obj-$(CONFIG_SPI_MPC83xx)		+= spi_mpc83xx.o
 # 	... add above this line ...
 
 # SPI protocol drivers (device/link on bus)
diff --git a/drivers/spi/spi_mpc83xx.c b/drivers/spi/spi_mpc83xx.c
new file mode 100644
index 000000000000..5d92a7e5cb41
--- /dev/null
+++ b/drivers/spi/spi_mpc83xx.c
@@ -0,0 +1,483 @@
+/*
+ * MPC83xx SPI controller driver.
+ *
+ * Maintainer: Kumar Gala
+ *
+ * Copyright (C) 2006 Polycom, Inc.
+ *
+ * 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.
+ */
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/completion.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/irq.h>
+#include <linux/device.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/spi_bitbang.h>
+#include <linux/platform_device.h>
+#include <linux/fsl_devices.h>
+
+#include <asm/irq.h>
+#include <asm/io.h>
+
+/* SPI Controller registers */
+struct mpc83xx_spi_reg {
+	u8 res1[0x20];
+	__be32 mode;
+	__be32 event;
+	__be32 mask;
+	__be32 command;
+	__be32 transmit;
+	__be32 receive;
+};
+
+/* SPI Controller mode register definitions */
+#define	SPMODE_CI_INACTIVEHIGH	(1 << 29)
+#define	SPMODE_CP_BEGIN_EDGECLK	(1 << 28)
+#define	SPMODE_DIV16		(1 << 27)
+#define	SPMODE_REV		(1 << 26)
+#define	SPMODE_MS		(1 << 25)
+#define	SPMODE_ENABLE		(1 << 24)
+#define	SPMODE_LEN(x)		((x) << 20)
+#define	SPMODE_PM(x)		((x) << 16)
+
+/*
+ * Default for SPI Mode:
+ * 	SPI MODE 0 (inactive low, phase middle, MSB, 8-bit length, slow clk
+ */
+#define	SPMODE_INIT_VAL (SPMODE_CI_INACTIVEHIGH | SPMODE_DIV16 | SPMODE_REV | \
+			 SPMODE_MS | SPMODE_LEN(7) | SPMODE_PM(0xf))
+
+/* SPIE register values */
+#define	SPIE_NE		0x00000200	/* Not empty */
+#define	SPIE_NF		0x00000100	/* Not full */
+
+/* SPIM register values */
+#define	SPIM_NE		0x00000200	/* Not empty */
+#define	SPIM_NF		0x00000100	/* Not full */
+
+/* SPI Controller driver's private data. */
+struct mpc83xx_spi {
+	/* bitbang has to be first */
+	struct spi_bitbang bitbang;
+	struct completion done;
+
+	struct mpc83xx_spi_reg __iomem *base;
+
+	/* rx & tx bufs from the spi_transfer */
+	const void *tx;
+	void *rx;
+
+	/* functions to deal with different sized buffers */
+	void (*get_rx) (u32 rx_data, struct mpc83xx_spi *);
+	u32(*get_tx) (struct mpc83xx_spi *);
+
+	unsigned int count;
+	u32 irq;
+
+	unsigned nsecs;		/* (clock cycle time)/2 */
+
+	u32 sysclk;
+	void (*activate_cs) (u8 cs, u8 polarity);
+	void (*deactivate_cs) (u8 cs, u8 polarity);
+};
+
+static inline void mpc83xx_spi_write_reg(__be32 __iomem * reg, u32 val)
+{
+	out_be32(reg, val);
+}
+
+static inline u32 mpc83xx_spi_read_reg(__be32 __iomem * reg)
+{
+	return in_be32(reg);
+}
+
+#define MPC83XX_SPI_RX_BUF(type) 					  \
+void mpc83xx_spi_rx_buf_##type(u32 data, struct mpc83xx_spi *mpc83xx_spi) \
+{									  \
+	type * rx = mpc83xx_spi->rx;					  \
+	*rx++ = (type)data;						  \
+	mpc83xx_spi->rx = rx;						  \
+}
+
+#define MPC83XX_SPI_TX_BUF(type)				\
+u32 mpc83xx_spi_tx_buf_##type(struct mpc83xx_spi *mpc83xx_spi)	\
+{								\
+	u32 data;						\
+	const type * tx = mpc83xx_spi->tx;			\
+	data = *tx++;						\
+	mpc83xx_spi->tx = tx;					\
+	return data;						\
+}
+
+MPC83XX_SPI_RX_BUF(u8)
+MPC83XX_SPI_RX_BUF(u16)
+MPC83XX_SPI_RX_BUF(u32)
+MPC83XX_SPI_TX_BUF(u8)
+MPC83XX_SPI_TX_BUF(u16)
+MPC83XX_SPI_TX_BUF(u32)
+
+static void mpc83xx_spi_chipselect(struct spi_device *spi, int value)
+{
+	struct mpc83xx_spi *mpc83xx_spi;
+	u8 pol = spi->mode & SPI_CS_HIGH ? 1 : 0;
+
+	mpc83xx_spi = spi_master_get_devdata(spi->master);
+
+	if (value == BITBANG_CS_INACTIVE) {
+		if (mpc83xx_spi->deactivate_cs)
+			mpc83xx_spi->deactivate_cs(spi->chip_select, pol);
+	}
+
+	if (value == BITBANG_CS_ACTIVE) {
+		u32 regval = mpc83xx_spi_read_reg(&mpc83xx_spi->base->mode);
+		u32 len = spi->bits_per_word;
+		if (len == 32)
+			len = 0;
+		else
+			len = len - 1;
+
+		/* mask out bits we are going to set */
+		regval &= ~0x38ff0000;
+
+		if (spi->mode & SPI_CPHA)
+			regval |= SPMODE_CP_BEGIN_EDGECLK;
+		if (spi->mode & SPI_CPOL)
+			regval |= SPMODE_CI_INACTIVEHIGH;
+
+		regval |= SPMODE_LEN(len);
+
+		if ((mpc83xx_spi->sysclk / spi->max_speed_hz) >= 64) {
+			u8 pm = mpc83xx_spi->sysclk / (spi->max_speed_hz * 64);
+			regval |= SPMODE_PM(pm) | SPMODE_DIV16;
+		} else {
+			u8 pm = mpc83xx_spi->sysclk / (spi->max_speed_hz * 4);
+			regval |= SPMODE_PM(pm);
+		}
+
+		mpc83xx_spi_write_reg(&mpc83xx_spi->base->mode, regval);
+		if (mpc83xx_spi->activate_cs)
+			mpc83xx_spi->activate_cs(spi->chip_select, pol);
+	}
+}
+
+static
+int mpc83xx_spi_setup_transfer(struct spi_device *spi, struct spi_transfer *t)
+{
+	struct mpc83xx_spi *mpc83xx_spi;
+	u32 regval;
+	u8 bits_per_word;
+	u32 hz;
+
+	mpc83xx_spi = spi_master_get_devdata(spi->master);
+
+	if (t) {
+		bits_per_word = t->bits_per_word;
+		hz = t->speed_hz;
+	} else {
+		bits_per_word = 0;
+		hz = 0;
+	}
+
+	/* spi_transfer level calls that work per-word */
+	if (!bits_per_word)
+		bits_per_word = spi->bits_per_word;
+
+	/* Make sure its a bit width we support [4..16, 32] */
+	if ((bits_per_word < 4)
+	    || ((bits_per_word > 16) && (bits_per_word != 32)))
+		return -EINVAL;
+
+	if (bits_per_word <= 8) {
+		mpc83xx_spi->get_rx = mpc83xx_spi_rx_buf_u8;
+		mpc83xx_spi->get_tx = mpc83xx_spi_tx_buf_u8;
+	} else if (bits_per_word <= 16) {
+		mpc83xx_spi->get_rx = mpc83xx_spi_rx_buf_u16;
+		mpc83xx_spi->get_tx = mpc83xx_spi_tx_buf_u16;
+	} else if (bits_per_word <= 32) {
+		mpc83xx_spi->get_rx = mpc83xx_spi_rx_buf_u32;
+		mpc83xx_spi->get_tx = mpc83xx_spi_tx_buf_u32;
+	} else
+		return -EINVAL;
+
+	/* nsecs = (clock period)/2 */
+	if (!hz)
+		hz = spi->max_speed_hz;
+	mpc83xx_spi->nsecs = (1000000000 / 2) / hz;
+	if (mpc83xx_spi->nsecs > MAX_UDELAY_MS * 1000)
+		return -EINVAL;
+
+	if (bits_per_word == 32)
+		bits_per_word = 0;
+	else
+		bits_per_word = bits_per_word - 1;
+
+	regval = mpc83xx_spi_read_reg(&mpc83xx_spi->base->mode);
+
+	/* Mask out bits_per_wordgth */
+	regval &= 0xff0fffff;
+	regval |= SPMODE_LEN(bits_per_word);
+
+	mpc83xx_spi_write_reg(&mpc83xx_spi->base->mode, regval);
+
+	return 0;
+}
+
+static int mpc83xx_spi_setup(struct spi_device *spi)
+{
+	struct spi_bitbang *bitbang;
+	struct mpc83xx_spi *mpc83xx_spi;
+	int retval;
+
+	if (!spi->max_speed_hz)
+		return -EINVAL;
+
+	bitbang = spi_master_get_devdata(spi->master);
+	mpc83xx_spi = spi_master_get_devdata(spi->master);
+
+	if (!spi->bits_per_word)
+		spi->bits_per_word = 8;
+
+	retval = mpc83xx_spi_setup_transfer(spi, NULL);
+	if (retval < 0)
+		return retval;
+
+	dev_dbg(&spi->dev, "%s, mode %d, %u bits/w, %u nsec\n",
+		__FUNCTION__, spi->mode & (SPI_CPOL | SPI_CPHA),
+		spi->bits_per_word, 2 * mpc83xx_spi->nsecs);
+
+	/* NOTE we _need_ to call chipselect() early, ideally with adapter
+	 * setup, unless the hardware defaults cooperate to avoid confusion
+	 * between normal (active low) and inverted chipselects.
+	 */
+
+	/* deselect chip (low or high) */
+	spin_lock(&bitbang->lock);
+	if (!bitbang->busy) {
+		bitbang->chipselect(spi, BITBANG_CS_INACTIVE);
+		ndelay(mpc83xx_spi->nsecs);
+	}
+	spin_unlock(&bitbang->lock);
+
+	return 0;
+}
+
+static int mpc83xx_spi_bufs(struct spi_device *spi, struct spi_transfer *t)
+{
+	struct mpc83xx_spi *mpc83xx_spi;
+	u32 word;
+
+	mpc83xx_spi = spi_master_get_devdata(spi->master);
+
+	mpc83xx_spi->tx = t->tx_buf;
+	mpc83xx_spi->rx = t->rx_buf;
+	mpc83xx_spi->count = t->len;
+	INIT_COMPLETION(mpc83xx_spi->done);
+
+	/* enable rx ints */
+	mpc83xx_spi_write_reg(&mpc83xx_spi->base->mask, SPIM_NE);
+
+	/* transmit word */
+	word = mpc83xx_spi->get_tx(mpc83xx_spi);
+	mpc83xx_spi_write_reg(&mpc83xx_spi->base->transmit, word);
+
+	wait_for_completion(&mpc83xx_spi->done);
+
+	/* disable rx ints */
+	mpc83xx_spi_write_reg(&mpc83xx_spi->base->mask, 0);
+
+	return t->len - mpc83xx_spi->count;
+}
+
+irqreturn_t mpc83xx_spi_irq(s32 irq, void *context_data,
+			    struct pt_regs * ptregs)
+{
+	struct mpc83xx_spi *mpc83xx_spi = context_data;
+	u32 event;
+	irqreturn_t ret = IRQ_NONE;
+
+	/* Get interrupt events(tx/rx) */
+	event = mpc83xx_spi_read_reg(&mpc83xx_spi->base->event);
+
+	/* We need handle RX first */
+	if (event & SPIE_NE) {
+		u32 rx_data = mpc83xx_spi_read_reg(&mpc83xx_spi->base->receive);
+
+		if (mpc83xx_spi->rx)
+			mpc83xx_spi->get_rx(rx_data, mpc83xx_spi);
+
+		ret = IRQ_HANDLED;
+	}
+
+	if ((event & SPIE_NF) == 0)
+		/* spin until TX is done */
+		while (((event =
+			 mpc83xx_spi_read_reg(&mpc83xx_spi->base->event)) &
+						SPIE_NF) == 0)
+			 cpu_relax();
+
+	mpc83xx_spi->count -= 1;
+	if (mpc83xx_spi->count) {
+		if (mpc83xx_spi->tx) {
+			u32 word = mpc83xx_spi->get_tx(mpc83xx_spi);
+			mpc83xx_spi_write_reg(&mpc83xx_spi->base->transmit,
+					      word);
+		}
+	} else {
+		complete(&mpc83xx_spi->done);
+	}
+
+	/* Clear the events */
+	mpc83xx_spi_write_reg(&mpc83xx_spi->base->event, event);
+
+	return ret;
+}
+
+static int __init mpc83xx_spi_probe(struct platform_device *dev)
+{
+	struct spi_master *master;
+	struct mpc83xx_spi *mpc83xx_spi;
+	struct fsl_spi_platform_data *pdata;
+	struct resource *r;
+	u32 regval;
+	int ret = 0;
+
+	/* Get resources(memory, IRQ) associated with the device */
+	master = spi_alloc_master(&dev->dev, sizeof(struct mpc83xx_spi));
+
+	if (master == NULL) {
+		ret = -ENOMEM;
+		goto err;
+	}
+
+	platform_set_drvdata(dev, master);
+	pdata = dev->dev.platform_data;
+
+	if (pdata == NULL) {
+		ret = -ENODEV;
+		goto free_master;
+	}
+
+	r = platform_get_resource(dev, IORESOURCE_MEM, 0);
+	if (r == NULL) {
+		ret = -ENODEV;
+		goto free_master;
+	}
+
+	mpc83xx_spi = spi_master_get_devdata(master);
+	mpc83xx_spi->bitbang.master = spi_master_get(master);
+	mpc83xx_spi->bitbang.chipselect = mpc83xx_spi_chipselect;
+	mpc83xx_spi->bitbang.setup_transfer = mpc83xx_spi_setup_transfer;
+	mpc83xx_spi->bitbang.txrx_bufs = mpc83xx_spi_bufs;
+	mpc83xx_spi->sysclk = pdata->sysclk;
+	mpc83xx_spi->activate_cs = pdata->activate_cs;
+	mpc83xx_spi->deactivate_cs = pdata->deactivate_cs;
+	mpc83xx_spi->get_rx = mpc83xx_spi_rx_buf_u8;
+	mpc83xx_spi->get_tx = mpc83xx_spi_tx_buf_u8;
+
+	mpc83xx_spi->bitbang.master->setup = mpc83xx_spi_setup;
+	init_completion(&mpc83xx_spi->done);
+
+	mpc83xx_spi->base = ioremap(r->start, r->end - r->start + 1);
+	if (mpc83xx_spi->base == NULL) {
+		ret = -ENOMEM;
+		goto put_master;
+	}
+
+	mpc83xx_spi->irq = platform_get_irq(dev, 0);
+
+	if (mpc83xx_spi->irq < 0) {
+		ret = -ENXIO;
+		goto unmap_io;
+	}
+
+	/* Register for SPI Interrupt */
+	ret = request_irq(mpc83xx_spi->irq, mpc83xx_spi_irq,
+			  0, "mpc83xx_spi", mpc83xx_spi);
+
+	if (ret != 0)
+		goto unmap_io;
+
+	master->bus_num = pdata->bus_num;
+	master->num_chipselect = pdata->max_chipselect;
+
+	/* SPI controller initializations */
+	mpc83xx_spi_write_reg(&mpc83xx_spi->base->mode, 0);
+	mpc83xx_spi_write_reg(&mpc83xx_spi->base->mask, 0);
+	mpc83xx_spi_write_reg(&mpc83xx_spi->base->command, 0);
+	mpc83xx_spi_write_reg(&mpc83xx_spi->base->event, 0xffffffff);
+
+	/* Enable SPI interface */
+	regval = pdata->initial_spmode | SPMODE_INIT_VAL | SPMODE_ENABLE;
+	mpc83xx_spi_write_reg(&mpc83xx_spi->base->mode, regval);
+
+	ret = spi_bitbang_start(&mpc83xx_spi->bitbang);
+
+	if (ret != 0)
+		goto free_irq;
+
+	printk(KERN_INFO
+	       "%s: MPC83xx SPI Controller driver at 0x%p (irq = %d)\n",
+	       dev->dev.bus_id, mpc83xx_spi->base, mpc83xx_spi->irq);
+
+	return ret;
+
+free_irq:
+	free_irq(mpc83xx_spi->irq, mpc83xx_spi);
+unmap_io:
+	iounmap(mpc83xx_spi->base);
+put_master:
+	spi_master_put(master);
+free_master:
+	kfree(master);
+err:
+	return ret;
+}
+
+static int __devexit mpc83xx_spi_remove(struct platform_device *dev)
+{
+	struct mpc83xx_spi *mpc83xx_spi;
+	struct spi_master *master;
+
+	master = platform_get_drvdata(dev);
+	mpc83xx_spi = spi_master_get_devdata(master);
+
+	spi_bitbang_stop(&mpc83xx_spi->bitbang);
+	free_irq(mpc83xx_spi->irq, mpc83xx_spi);
+	iounmap(mpc83xx_spi->base);
+	spi_master_put(mpc83xx_spi->bitbang.master);
+
+	return 0;
+}
+
+static struct platform_driver mpc83xx_spi_driver = {
+	.probe = mpc83xx_spi_probe,
+	.remove = __devexit_p(mpc83xx_spi_remove),
+	.driver = {
+		   .name = "mpc83xx_spi",
+	},
+};
+
+static int __init mpc83xx_spi_init(void)
+{
+	return platform_driver_register(&mpc83xx_spi_driver);
+}
+
+static void __exit mpc83xx_spi_exit(void)
+{
+	platform_driver_unregister(&mpc83xx_spi_driver);
+}
+
+module_init(mpc83xx_spi_init);
+module_exit(mpc83xx_spi_exit);
+
+MODULE_AUTHOR("Kumar Gala");
+MODULE_DESCRIPTION("Simple MPC83xx SPI Driver");
+MODULE_LICENSE("GPL");
diff --git a/include/linux/fsl_devices.h b/include/linux/fsl_devices.h
index a3a0e078f79d..16fbe59edeb1 100644
--- a/include/linux/fsl_devices.h
+++ b/include/linux/fsl_devices.h
@@ -110,5 +110,16 @@ struct fsl_usb2_platform_data {
 #define FSL_USB2_PORT0_ENABLED	0x00000001
 #define FSL_USB2_PORT1_ENABLED	0x00000002
 
+struct fsl_spi_platform_data {
+	u32 	initial_spmode;	/* initial SPMODE value */
+	u16	bus_num;
+
+	/* board specific information */
+	u16	max_chipselect;
+	void	(*activate_cs)(u8 cs, u8 polarity);
+	void	(*deactivate_cs)(u8 cs, u8 polarity);
+	u32	sysclk;
+};
+
 #endif				/* _FSL_DEVICE_H_ */
 #endif				/* __KERNEL__ */
-- 
cgit v1.2.3


From 1b81d6637d27a0e6a0506ecef65493b50d859cfc Mon Sep 17 00:00:00 2001
From: Adrian Bunk <bunk@stusta.de>
Date: Sat, 20 May 2006 15:00:16 -0700
Subject: [PATCH] drivers/base/firmware_class.c: cleanups

- remove the following global function that is both unused and
  unimplemented:
  - register_firmware()

- make the following needlessly global function static:
  - firmware_class_uevent()

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 Documentation/firmware_class/README                | 17 ----------
 .../firmware_class/firmware_sample_driver.c        | 11 ------
 drivers/base/firmware_class.c                      | 39 +++++-----------------
 include/linux/firmware.h                           |  1 -
 4 files changed, 8 insertions(+), 60 deletions(-)

(limited to 'include/linux')

diff --git a/Documentation/firmware_class/README b/Documentation/firmware_class/README
index 43e836c07ae8..e9cc8bb26f7d 100644
--- a/Documentation/firmware_class/README
+++ b/Documentation/firmware_class/README
@@ -105,20 +105,3 @@
    on the setup, so I think that the choice on what firmware to make
    persistent should be left to userspace.
 
- - Why register_firmware()+__init can be useful:
- 	- For boot devices needing firmware.
-	- To make the transition easier:
-		The firmware can be declared __init and register_firmware()
-		called on module_init. Then the firmware is warranted to be
-		there even if "firmware hotplug userspace" is not there yet or
-		it doesn't yet provide the needed firmware.
-		Once the firmware is widely available in userspace, it can be
-		removed from the kernel. Or made optional (CONFIG_.*_FIRMWARE).
-
-	In either case, if firmware hotplug support is there, it can move the
-	firmware out of kernel memory into the real filesystem for later
-	usage.
-
-	Note: If persistence is implemented on top of initramfs,
-	register_firmware() may not be appropriate.
-
diff --git a/Documentation/firmware_class/firmware_sample_driver.c b/Documentation/firmware_class/firmware_sample_driver.c
index ad3edaba4533..87feccdb5c9f 100644
--- a/Documentation/firmware_class/firmware_sample_driver.c
+++ b/Documentation/firmware_class/firmware_sample_driver.c
@@ -5,8 +5,6 @@
  *
  * Sample code on how to use request_firmware() from drivers.
  *
- * Note that register_firmware() is currently useless.
- *
  */
 
 #include <linux/module.h>
@@ -17,11 +15,6 @@
 
 #include "linux/firmware.h"
 
-#define WE_CAN_NEED_FIRMWARE_BEFORE_USERSPACE_IS_AVAILABLE
-#ifdef WE_CAN_NEED_FIRMWARE_BEFORE_USERSPACE_IS_AVAILABLE
-char __init inkernel_firmware[] = "let's say that this is firmware\n";
-#endif
-
 static struct device ghost_device = {
 	.bus_id    = "ghost0",
 };
@@ -104,10 +97,6 @@ static void sample_probe_async(void)
 
 static int sample_init(void)
 {
-#ifdef WE_CAN_NEED_FIRMWARE_BEFORE_USERSPACE_IS_AVAILABLE
-	register_firmware("sample_driver_fw", inkernel_firmware,
-			  sizeof(inkernel_firmware));
-#endif
 	device_initialize(&ghost_device);
 	/* since there is no real hardware insertion I just call the
 	 * sample probe functions here */
diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c
index 472318205236..0c99ae6a3407 100644
--- a/drivers/base/firmware_class.c
+++ b/drivers/base/firmware_class.c
@@ -86,18 +86,9 @@ firmware_timeout_store(struct class *class, const char *buf, size_t count)
 static CLASS_ATTR(timeout, 0644, firmware_timeout_show, firmware_timeout_store);
 
 static void  fw_class_dev_release(struct class_device *class_dev);
-int firmware_class_uevent(struct class_device *dev, char **envp,
-			   int num_envp, char *buffer, int buffer_size);
 
-static struct class firmware_class = {
-	.name		= "firmware",
-	.uevent	= firmware_class_uevent,
-	.release	= fw_class_dev_release,
-};
-
-int
-firmware_class_uevent(struct class_device *class_dev, char **envp,
-		       int num_envp, char *buffer, int buffer_size)
+static int firmware_class_uevent(struct class_device *class_dev, char **envp,
+				 int num_envp, char *buffer, int buffer_size)
 {
 	struct firmware_priv *fw_priv = class_get_devdata(class_dev);
 	int i = 0, len = 0;
@@ -116,6 +107,12 @@ firmware_class_uevent(struct class_device *class_dev, char **envp,
 	return 0;
 }
 
+static struct class firmware_class = {
+	.name		= "firmware",
+	.uevent		= firmware_class_uevent,
+	.release	= fw_class_dev_release,
+};
+
 static ssize_t
 firmware_loading_show(struct class_device *class_dev, char *buf)
 {
@@ -493,25 +490,6 @@ release_firmware(const struct firmware *fw)
 	}
 }
 
-/**
- * register_firmware: - provide a firmware image for later usage
- * @name: name of firmware image file
- * @data: buffer pointer for the firmware image
- * @size: size of the data buffer area
- *
- *	Make sure that @data will be available by requesting firmware @name.
- *
- *	Note: This will not be possible until some kind of persistence
- *	is available.
- **/
-void
-register_firmware(const char *name, const u8 *data, size_t size)
-{
-	/* This is meaningless without firmware caching, so until we
-	 * decide if firmware caching is reasonable just leave it as a
-	 * noop */
-}
-
 /* Async support */
 struct firmware_work {
 	struct work_struct work;
@@ -630,4 +608,3 @@ module_exit(firmware_class_exit);
 EXPORT_SYMBOL(release_firmware);
 EXPORT_SYMBOL(request_firmware);
 EXPORT_SYMBOL(request_firmware_nowait);
-EXPORT_SYMBOL(register_firmware);
diff --git a/include/linux/firmware.h b/include/linux/firmware.h
index 2d716080be4a..33d8f2087b6e 100644
--- a/include/linux/firmware.h
+++ b/include/linux/firmware.h
@@ -19,5 +19,4 @@ int request_firmware_nowait(
 	void (*cont)(const struct firmware *fw, void *context));
 
 void release_firmware(const struct firmware *fw);
-void register_firmware(const char *name, const u8 *data, size_t size);
 #endif
-- 
cgit v1.2.3


From e984bb43f7450312ba66fe0e67a99efa6be3b246 Mon Sep 17 00:00:00 2001
From: Bob Picco <bob.picco@hp.com>
Date: Sat, 20 May 2006 15:00:31 -0700
Subject: [PATCH] Align the node_mem_map endpoints to a MAX_ORDER boundary

Andy added code to buddy allocator which does not require the zone's
endpoints to be aligned to MAX_ORDER.  An issue is that the buddy allocator
requires the node_mem_map's endpoints to be MAX_ORDER aligned.  Otherwise
__page_find_buddy could compute a buddy not in node_mem_map for partial
MAX_ORDER regions at zone's endpoints.  page_is_buddy will detect that
these pages at endpoints are not PG_buddy (they were zeroed out by bootmem
allocator and not part of zone).  Of course the negative here is we could
waste a little memory but the positive is eliminating all the old checks
for zone boundary conditions.

SPARSEMEM won't encounter this issue because of MAX_ORDER size constraint
when SPARSEMEM is configured.  ia64 VIRTUAL_MEM_MAP doesn't need the logic
either because the holes and endpoints are handled differently.  This
leaves checking alloc_remap and other arches which privately allocate for
node_mem_map.

Signed-off-by: Bob Picco <bob.picco@hp.com>
Acked-by: Mel Gorman <mel@csn.ul.ie>
Cc: Dave Hansen <haveblue@us.ibm.com>
Cc: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 include/linux/mmzone.h |  1 +
 mm/page_alloc.c        | 14 +++++++++++---
 2 files changed, 12 insertions(+), 3 deletions(-)

(limited to 'include/linux')

diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index b5c21122c299..36740354d4db 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -22,6 +22,7 @@
 #else
 #define MAX_ORDER CONFIG_FORCE_MAX_ZONEORDER
 #endif
+#define MAX_ORDER_NR_PAGES (1 << (MAX_ORDER - 1))
 
 struct free_area {
 	struct list_head	free_list;
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index bb3416932ab0..253a450c400d 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -2125,14 +2125,22 @@ static void __init alloc_node_mem_map(struct pglist_data *pgdat)
 #ifdef CONFIG_FLAT_NODE_MEM_MAP
 	/* ia64 gets its own node_mem_map, before this, without bootmem */
 	if (!pgdat->node_mem_map) {
-		unsigned long size;
+		unsigned long size, start, end;
 		struct page *map;
 
-		size = (pgdat->node_spanned_pages + 1) * sizeof(struct page);
+		/*
+		 * The zone's endpoints aren't required to be MAX_ORDER
+		 * aligned but the node_mem_map endpoints must be in order
+		 * for the buddy allocator to function correctly.
+		 */
+		start = pgdat->node_start_pfn & ~(MAX_ORDER_NR_PAGES - 1);
+		end = pgdat->node_start_pfn + pgdat->node_spanned_pages;
+		end = ALIGN(end, MAX_ORDER_NR_PAGES);
+		size =  (end - start) * sizeof(struct page);
 		map = alloc_remap(pgdat->node_id, size);
 		if (!map)
 			map = alloc_bootmem_node(pgdat, size);
-		pgdat->node_mem_map = map;
+		pgdat->node_mem_map = map + (pgdat->node_start_pfn - start);
 	}
 #ifdef CONFIG_FLATMEM
 	/*
-- 
cgit v1.2.3


From e46e490368f87032a6e54969194413339b35a385 Mon Sep 17 00:00:00 2001
From: Andrew Morton <akpm@osdl.org>
Date: Mon, 22 May 2006 22:35:24 -0700
Subject: [PATCH] sys_sync_file_range(): move exported flags outside __KERNEL__

These flags are needed by userspace - move them outside __KERNEL__

(Pointed out by dwmw2)

Cc: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 include/linux/fs.h | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

(limited to 'include/linux')

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 3de2bfb2410f..f813bc8266aa 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -213,6 +213,10 @@ extern int dir_notify_enable;
 #define FIBMAP	   _IO(0x00,1)	/* bmap access */
 #define FIGETBSZ   _IO(0x00,2)	/* get the block size used for bmap */
 
+#define SYNC_FILE_RANGE_WAIT_BEFORE	1
+#define SYNC_FILE_RANGE_WRITE		2
+#define SYNC_FILE_RANGE_WAIT_AFTER	4
+
 #ifdef __KERNEL__
 
 #include <linux/linkage.h>
@@ -758,9 +762,6 @@ extern int fcntl_setlease(unsigned int fd, struct file *filp, long arg);
 extern int fcntl_getlease(struct file *filp);
 
 /* fs/sync.c */
-#define SYNC_FILE_RANGE_WAIT_BEFORE	1
-#define SYNC_FILE_RANGE_WRITE		2
-#define SYNC_FILE_RANGE_WAIT_AFTER	4
 extern int do_sync_file_range(struct file *file, loff_t offset, loff_t endbyte,
 			unsigned int flags);
 
-- 
cgit v1.2.3


From 0f0410823792ae0ecb45f2578598b115835ffdbb Mon Sep 17 00:00:00 2001
From: David Woodhouse <dwmw2@infradead.org>
Date: Tue, 23 May 2006 07:46:40 -0700
Subject: [PATCH] powerpc: wire up sys_[gs]et_robust_list

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Paul Mackerras <paulus@samba.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/powerpc/kernel/systbl.S                | 2 ++
 arch/powerpc/platforms/cell/spu_callbacks.c | 2 ++
 include/asm-powerpc/unistd.h                | 4 +++-
 include/linux/syscalls.h                    | 6 ++++++
 4 files changed, 13 insertions(+), 1 deletion(-)

(limited to 'include/linux')

diff --git a/arch/powerpc/kernel/systbl.S b/arch/powerpc/kernel/systbl.S
index cf56a1d499ff..26ed1f5ef16e 100644
--- a/arch/powerpc/kernel/systbl.S
+++ b/arch/powerpc/kernel/systbl.S
@@ -338,6 +338,8 @@ SYSCALL(symlinkat)
 SYSCALL(readlinkat)
 SYSCALL(fchmodat)
 SYSCALL(faccessat)
+COMPAT_SYS(get_robust_list)
+COMPAT_SYS(set_robust_list)
 
 /*
  * please add new calls to arch/powerpc/platforms/cell/spu_callbacks.c
diff --git a/arch/powerpc/platforms/cell/spu_callbacks.c b/arch/powerpc/platforms/cell/spu_callbacks.c
index 5a0f9e3beb24..b47fcc5ddb78 100644
--- a/arch/powerpc/platforms/cell/spu_callbacks.c
+++ b/arch/powerpc/platforms/cell/spu_callbacks.c
@@ -333,6 +333,8 @@ void *spu_syscall_table[] = {
 	[__NR_readlinkat]		sys_readlinkat,
 	[__NR_fchmodat]			sys_fchmodat,
 	[__NR_faccessat]		sys_faccessat,
+	[__NR_get_robust_list]		sys_get_robust_list,
+	[__NR_set_robust_list]		sys_set_robust_list,
 };
 
 long spu_sys_callback(struct spu_syscall_block *s)
diff --git a/include/asm-powerpc/unistd.h b/include/asm-powerpc/unistd.h
index 908acb44cb8a..edde2462bf52 100644
--- a/include/asm-powerpc/unistd.h
+++ b/include/asm-powerpc/unistd.h
@@ -321,8 +321,10 @@
 #define __NR_readlinkat		296
 #define __NR_fchmodat		297
 #define __NR_faccessat		298
+#define __NR_get_robust_list	299
+#define __NR_set_robust_list	300
 
-#define __NR_syscalls		299
+#define __NR_syscalls		301
 
 #ifdef __KERNEL__
 #define __NR__exit __NR_exit
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index 3996960fc565..60d49e5456e7 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -52,6 +52,7 @@ struct utimbuf;
 struct mq_attr;
 struct compat_stat;
 struct compat_timeval;
+struct robust_list_head;
 
 #include <linux/config.h>
 #include <linux/types.h>
@@ -581,5 +582,10 @@ asmlinkage long sys_tee(int fdin, int fdout, size_t len, unsigned int flags);
 
 asmlinkage long sys_sync_file_range(int fd, loff_t offset, loff_t nbytes,
 					unsigned int flags);
+asmlinkage long sys_get_robust_list(int pid,
+				    struct robust_list_head __user **head_ptr,
+				    size_t __user *len_ptr);
+asmlinkage long sys_set_robust_list(struct robust_list_head __user *head,
+				    size_t len);
 
 #endif
-- 
cgit v1.2.3