Merge branch 'devel-stable' into devel

Conflicts:
	arch/arm/Kconfig
	arch/arm/include/asm/system.h
	arch/arm/mm/Kconfig

66 files changed, 218 insertions, 92 deletions

diff --git a/drivers/char/agp/amd-k7-agp.c b/drivers/char/agp/amd-k7-agp.c
index 73dbf40c874d..a7637d72cef6 100644
--- a/drivers/char/agp/amd-k7-agp.c
+++ b/drivers/char/agp/amd-k7-agp.c
@@ -6,9 +6,9 @@
 #include <linux/pci.h>
 #include <linux/init.h>
 #include <linux/agp_backend.h>
-#include <linux/gfp.h>
 #include <linux/page-flags.h>
 #include <linux/mm.h>
+#include <linux/slab.h>
 #include "agp.h"
 
 #define AMD_MMBASE	0x14
diff --git a/drivers/char/agp/backend.c b/drivers/char/agp/backend.c
index c3ab46da51a3..ee4f855611b6 100644
--- a/drivers/char/agp/backend.c
+++ b/drivers/char/agp/backend.c
@@ -30,6 +30,7 @@
 #include <linux/module.h>
 #include <linux/pci.h>
 #include <linux/init.h>
+#include <linux/slab.h>
 #include <linux/pagemap.h>
 #include <linux/miscdevice.h>
 #include <linux/pm.h>
diff --git a/drivers/char/agp/compat_ioctl.c b/drivers/char/agp/compat_ioctl.c
index 58c57cb2518c..9d2c97a69cdd 100644
--- a/drivers/char/agp/compat_ioctl.c
+++ b/drivers/char/agp/compat_ioctl.c
@@ -30,6 +30,7 @@
 #include <linux/pci.h>
 #include <linux/fs.h>
 #include <linux/agpgart.h>
+#include <linux/slab.h>
 #include <asm/uaccess.h>
 #include "agp.h"
 #include "compat_ioctl.h"
diff --git a/drivers/char/agp/generic.c b/drivers/char/agp/generic.c
index c50543966eb2..fb86708e47ed 100644
--- a/drivers/char/agp/generic.c
+++ b/drivers/char/agp/generic.c
@@ -38,6 +38,7 @@
 #include <linux/dma-mapping.h>
 #include <linux/mm.h>
 #include <linux/sched.h>
+#include <linux/slab.h>
 #include <asm/io.h>
 #include <asm/cacheflush.h>
 #include <asm/pgtable.h>
diff --git a/drivers/char/agp/hp-agp.c b/drivers/char/agp/hp-agp.c
index 58752b70efea..056b289a1e89 100644
--- a/drivers/char/agp/hp-agp.c
+++ b/drivers/char/agp/hp-agp.c
@@ -15,6 +15,7 @@
 #include <linux/init.h>
 #include <linux/agp_backend.h>
 #include <linux/log2.h>
+#include <linux/slab.h>
 
 #include <asm/acpi-ext.h>
 
diff --git a/drivers/char/agp/intel-agp.c b/drivers/char/agp/intel-agp.c
index a3e10dc7cc25..aa4248efc5d8 100644
--- a/drivers/char/agp/intel-agp.c
+++ b/drivers/char/agp/intel-agp.c
@@ -4,6 +4,7 @@
 
 #include <linux/module.h>
 #include <linux/pci.h>
+#include <linux/slab.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/pagemap.h>
@@ -97,6 +98,9 @@ EXPORT_SYMBOL(intel_agp_enabled);
 #define IS_PINEVIEW (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_PINEVIEW_M_HB || \
 		agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_PINEVIEW_HB)
 
+#define IS_SNB (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_SANDYBRIDGE_HB || \
+		agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_SANDYBRIDGE_M_HB)
+
 #define IS_G4X (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_EAGLELAKE_HB || \
 		agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_Q45_HB || \
 		agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_G45_HB || \
@@ -107,8 +111,7 @@ EXPORT_SYMBOL(intel_agp_enabled);
 		agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_IRONLAKE_M_HB || \
 		agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_IRONLAKE_MA_HB || \
 		agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_IRONLAKE_MC2_HB || \
-		agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_SANDYBRIDGE_HB || \
-		agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_SANDYBRIDGE_M_HB)
+		IS_SNB)
 
 extern int agp_memory_reserved;
 
@@ -175,6 +178,10 @@ extern int agp_memory_reserved;
 #define SNB_GMCH_GMS_STOLEN_448M	(0xe << 3)
 #define SNB_GMCH_GMS_STOLEN_480M	(0xf << 3)
 #define SNB_GMCH_GMS_STOLEN_512M	(0x10 << 3)
+#define SNB_GTT_SIZE_0M			(0 << 8)
+#define SNB_GTT_SIZE_1M			(1 << 8)
+#define SNB_GTT_SIZE_2M			(2 << 8)
+#define SNB_GTT_SIZE_MASK		(3 << 8)
 
 static const struct aper_size_info_fixed intel_i810_sizes[] =
 {
@@ -1200,6 +1207,9 @@ static void intel_i9xx_setup_flush(void)
 	if (intel_private.ifp_resource.start)
 		return;
 
+	if (IS_SNB)
+		return;
+
 	/* setup a resource for this object */
 	intel_private.ifp_resource.name = "Intel Flush Page";
 	intel_private.ifp_resource.flags = IORESOURCE_MEM;
@@ -1438,6 +1448,8 @@ static unsigned long intel_i965_mask_memory(struct agp_bridge_data *bridge,
 
 static void intel_i965_get_gtt_range(int *gtt_offset, int *gtt_size)
 {
+	u16 snb_gmch_ctl;
+
 	switch (agp_bridge->dev->device) {
 	case PCI_DEVICE_ID_INTEL_GM45_HB:
 	case PCI_DEVICE_ID_INTEL_EAGLELAKE_HB:
@@ -1449,9 +1461,26 @@ static void intel_i965_get_gtt_range(int *gtt_offset, int *gtt_size)
 	case PCI_DEVICE_ID_INTEL_IRONLAKE_M_HB:
 	case PCI_DEVICE_ID_INTEL_IRONLAKE_MA_HB:
 	case PCI_DEVICE_ID_INTEL_IRONLAKE_MC2_HB:
+		*gtt_offset = *gtt_size = MB(2);
+		break;
 	case PCI_DEVICE_ID_INTEL_SANDYBRIDGE_HB:
 	case PCI_DEVICE_ID_INTEL_SANDYBRIDGE_M_HB:
-		*gtt_offset = *gtt_size = MB(2);
+		*gtt_offset = MB(2);
+
+		pci_read_config_word(intel_private.pcidev, SNB_GMCH_CTRL, &snb_gmch_ctl);
+		switch (snb_gmch_ctl & SNB_GTT_SIZE_MASK) {
+		default:
+		case SNB_GTT_SIZE_0M:
+			printk(KERN_ERR "Bad GTT size mask: 0x%04x.\n", snb_gmch_ctl);
+			*gtt_size = MB(0);
+			break;
+		case SNB_GTT_SIZE_1M:
+			*gtt_size = MB(1);
+			break;
+		case SNB_GTT_SIZE_2M:
+			*gtt_size = MB(2);
+			break;
+		}
 		break;
 	default:
 		*gtt_offset = *gtt_size = KB(512);
@@ -1788,8 +1817,6 @@ static int intel_845_configure(void)
 	pci_write_config_byte(agp_bridge->dev, INTEL_I845_AGPM, temp2 | (1 << 1));
 	/* clear any possible error conditions */
 	pci_write_config_word(agp_bridge->dev, INTEL_I845_ERRSTS, 0x001c);
-
-	intel_i830_setup_flush();
 	return 0;
 }
 
@@ -2159,7 +2186,6 @@ static const struct agp_bridge_driver intel_845_driver = {
 	.agp_destroy_page	= agp_generic_destroy_page,
 	.agp_destroy_pages      = agp_generic_destroy_pages,
 	.agp_type_to_mask_type  = agp_generic_type_to_mask_type,
-	.chipset_flush		= intel_i830_chipset_flush,
 };
 
 static const struct agp_bridge_driver intel_850_driver = {
diff --git a/drivers/char/agp/nvidia-agp.c b/drivers/char/agp/nvidia-agp.c
index 7e36d2b4f9d4..10f24e349a26 100644
--- a/drivers/char/agp/nvidia-agp.c
+++ b/drivers/char/agp/nvidia-agp.c
@@ -8,7 +8,6 @@
 #include <linux/pci.h>
 #include <linux/init.h>
 #include <linux/agp_backend.h>
-#include <linux/gfp.h>
 #include <linux/page-flags.h>
 #include <linux/mm.h>
 #include <linux/jiffies.h>
diff --git a/drivers/char/agp/sgi-agp.c b/drivers/char/agp/sgi-agp.c
index 0d426ae39c85..ffa888cd1c88 100644
--- a/drivers/char/agp/sgi-agp.c
+++ b/drivers/char/agp/sgi-agp.c
@@ -14,6 +14,7 @@
 #include <linux/acpi.h>
 #include <linux/module.h>
 #include <linux/pci.h>
+#include <linux/slab.h>
 #include <linux/init.h>
 #include <linux/agp_backend.h>
 #include <asm/sn/addrs.h>
diff --git a/drivers/char/agp/uninorth-agp.c b/drivers/char/agp/uninorth-agp.c
index d89da4ac061f..6f48931ac1ce 100644
--- a/drivers/char/agp/uninorth-agp.c
+++ b/drivers/char/agp/uninorth-agp.c
@@ -3,6 +3,7 @@
  */
 #include <linux/module.h>
 #include <linux/pci.h>
+#include <linux/slab.h>
 #include <linux/init.h>
 #include <linux/pagemap.h>
 #include <linux/agp_backend.h>
diff --git a/drivers/char/amiserial.c b/drivers/char/amiserial.c
index 6c32fbf07164..56b27671adc4 100644
--- a/drivers/char/amiserial.c
+++ b/drivers/char/amiserial.c
@@ -2021,8 +2021,6 @@ static int __init rs_init(void)
 	state->baud_base = amiga_colorclock;
 	state->xmit_fifo_size = 1;
 
-	local_irq_save(flags);
-
 	/* set ISRs, and then disable the rx interrupts */
 	error = request_irq(IRQ_AMIGA_TBE, ser_tx_int, 0, "serial TX", state);
 	if (error)
@@ -2033,6 +2031,8 @@ static int __init rs_init(void)
 	if (error)
 		goto fail_free_irq;
 
+	local_irq_save(flags);
+
 	/* turn off Rx and Tx interrupts */
 	custom.intena = IF_RBF | IF_TBE;
 	mb();
diff --git a/drivers/char/bfin_jtag_comm.c b/drivers/char/bfin_jtag_comm.c
index 2628c7415ea8..e397df3ad98e 100644
--- a/drivers/char/bfin_jtag_comm.c
+++ b/drivers/char/bfin_jtag_comm.c
@@ -21,6 +21,7 @@
 #include <linux/module.h>
 #include <linux/mutex.h>
 #include <linux/sched.h>
+#include <linux/slab.h>
 #include <linux/tty.h>
 #include <linux/tty_driver.h>
 #include <linux/tty_flip.h>
diff --git a/drivers/char/briq_panel.c b/drivers/char/briq_panel.c
index d8cff909001c..555cd93c2ee5 100644
--- a/drivers/char/briq_panel.c
+++ b/drivers/char/briq_panel.c
@@ -14,7 +14,6 @@
 #include <linux/kernel.h>
 #include <linux/wait.h>
 #include <linux/string.h>
-#include <linux/slab.h>
 #include <linux/ioport.h>
 #include <linux/delay.h>
 #include <linux/miscdevice.h>
diff --git a/drivers/char/bsr.c b/drivers/char/bsr.c
index c02db01f736e..7fef305774de 100644
--- a/drivers/char/bsr.c
+++ b/drivers/char/bsr.c
@@ -27,6 +27,7 @@
 #include <linux/cdev.h>
 #include <linux/list.h>
 #include <linux/mm.h>
+#include <linux/slab.h>
 #include <asm/pgtable.h>
 #include <asm/io.h>
 
diff --git a/drivers/char/cyclades.c b/drivers/char/cyclades.c
index b861c08263a4..9824b4162904 100644
--- a/drivers/char/cyclades.c
+++ b/drivers/char/cyclades.c
@@ -79,6 +79,7 @@
 #include <linux/bitops.h>
 #include <linux/firmware.h>
 #include <linux/device.h>
+#include <linux/slab.h>
 
 #include <linux/io.h>
 #include <linux/uaccess.h>
diff --git a/drivers/char/dsp56k.c b/drivers/char/dsp56k.c
index 85832ab924e6..8a1b28a10ef0 100644
--- a/drivers/char/dsp56k.c
+++ b/drivers/char/dsp56k.c
@@ -24,7 +24,6 @@
  */
 
 #include <linux/module.h>
-#include <linux/slab.h>	/* for kmalloc() and kfree() */
 #include <linux/major.h>
 #include <linux/types.h>
 #include <linux/errno.h>
diff --git a/drivers/char/epca.c b/drivers/char/epca.c
index 17b044a71e02..6f5ffe1320f7 100644
--- a/drivers/char/epca.c
+++ b/drivers/char/epca.c
@@ -36,7 +36,6 @@
 #include <linux/ctype.h>
 #include <linux/tty.h>
 #include <linux/tty_flip.h>
-#include <linux/slab.h>
 #include <linux/smp_lock.h>
 #include <linux/ioport.h>
 #include <linux/interrupt.h>
diff --git a/drivers/char/generic_serial.c b/drivers/char/generic_serial.c
index d400cbd280f2..5954ee1dc953 100644
--- a/drivers/char/generic_serial.c
+++ b/drivers/char/generic_serial.c
@@ -29,6 +29,7 @@
 #include <linux/interrupt.h>
 #include <linux/tty_flip.h>
 #include <linux/delay.h>
+#include <linux/gfp.h>
 #include <asm/uaccess.h>
 
 #define DEBUG 
diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c
index 9c5eea3ea4de..9ded667625ac 100644
--- a/drivers/char/hpet.c
+++ b/drivers/char/hpet.c
@@ -31,6 +31,7 @@
 #include <linux/seq_file.h>
 #include <linux/bitops.h>
 #include <linux/clocksource.h>
+#include <linux/slab.h>
 
 #include <asm/current.h>
 #include <asm/uaccess.h>
diff --git a/drivers/char/hvc_console.c b/drivers/char/hvc_console.c
index 465185fc0f52..35cca4c7fb18 100644
--- a/drivers/char/hvc_console.c
+++ b/drivers/char/hvc_console.c
@@ -38,6 +38,7 @@
 #include <linux/spinlock.h>
 #include <linux/delay.h>
 #include <linux/freezer.h>
+#include <linux/slab.h>
 
 #include <asm/uaccess.h>
 
@@ -312,6 +313,7 @@ static int hvc_open(struct tty_struct *tty, struct file * filp)
 	spin_lock_irqsave(&hp->lock, flags);
 	/* Check and then increment for fast path open. */
 	if (hp->count++ > 0) {
+		tty_kref_get(tty);
 		spin_unlock_irqrestore(&hp->lock, flags);
 		hvc_kick();
 		return 0;
@@ -319,7 +321,7 @@ static int hvc_open(struct tty_struct *tty, struct file * filp)
 
 	tty->driver_data = hp;
 
-	hp->tty = tty;
+	hp->tty = tty_kref_get(tty);
 
 	spin_unlock_irqrestore(&hp->lock, flags);
 
@@ -336,6 +338,7 @@ static int hvc_open(struct tty_struct *tty, struct file * filp)
 		spin_lock_irqsave(&hp->lock, flags);
 		hp->tty = NULL;
 		spin_unlock_irqrestore(&hp->lock, flags);
+		tty_kref_put(tty);
 		tty->driver_data = NULL;
 		kref_put(&hp->kref, destroy_hvc_struct);
 		printk(KERN_ERR "hvc_open: request_irq failed with rc %d.\n", rc);
@@ -363,6 +366,7 @@ static void hvc_close(struct tty_struct *tty, struct file * filp)
 		return;
 
 	hp = tty->driver_data;
+
 	spin_lock_irqsave(&hp->lock, flags);
 
 	if (--hp->count == 0) {
@@ -389,6 +393,7 @@ static void hvc_close(struct tty_struct *tty, struct file * filp)
 		spin_unlock_irqrestore(&hp->lock, flags);
 	}
 
+	tty_kref_put(tty);
 	kref_put(&hp->kref, destroy_hvc_struct);
 }
 
@@ -424,10 +429,11 @@ static void hvc_hangup(struct tty_struct *tty)
 	spin_unlock_irqrestore(&hp->lock, flags);
 
 	if (hp->ops->notifier_hangup)
-			hp->ops->notifier_hangup(hp, hp->data);
+		hp->ops->notifier_hangup(hp, hp->data);
 
 	while(temp_open_count) {
 		--temp_open_count;
+		tty_kref_put(tty);
 		kref_put(&hp->kref, destroy_hvc_struct);
 	}
 }
@@ -592,7 +598,7 @@ int hvc_poll(struct hvc_struct *hp)
 	}
 
 	/* No tty attached, just skip */
-	tty = hp->tty;
+	tty = tty_kref_get(hp->tty);
 	if (tty == NULL)
 		goto bail;
 
@@ -672,6 +678,8 @@ int hvc_poll(struct hvc_struct *hp)
 
 		tty_flip_buffer_push(tty);
 	}
+	if (tty)
+		tty_kref_put(tty);
 
 	return poll_mask;
 }
@@ -807,7 +815,7 @@ int hvc_remove(struct hvc_struct *hp)
 	struct tty_struct *tty;
 
 	spin_lock_irqsave(&hp->lock, flags);
-	tty = hp->tty;
+	tty = tty_kref_get(hp->tty);
 
 	if (hp->index < MAX_NR_HVC_CONSOLES)
 		vtermnos[hp->index] = -1;
@@ -819,18 +827,18 @@ int hvc_remove(struct hvc_struct *hp)
 	/*
 	 * We 'put' the instance that was grabbed when the kref instance
 	 * was initialized using kref_init().  Let the last holder of this
-	 * kref cause it to be removed, which will probably be the tty_hangup
+	 * kref cause it to be removed, which will probably be the tty_vhangup
 	 * below.
 	 */
 	kref_put(&hp->kref, destroy_hvc_struct);
 
 	/*
-	 * This function call will auto chain call hvc_hangup.  The tty should
-	 * always be valid at this time unless a simultaneous tty close already
-	 * cleaned up the hvc_struct.
+	 * This function call will auto chain call hvc_hangup.
 	 */
-	if (tty)
-		tty_hangup(tty);
+	if (tty) {
+		tty_vhangup(tty);
+		tty_kref_put(tty);
+	}
 	return 0;
 }
 EXPORT_SYMBOL_GPL(hvc_remove);
diff --git a/drivers/char/hvc_iucv.c b/drivers/char/hvc_iucv.c
index 37b0542a4eeb..5a80ad68ef22 100644
--- a/drivers/char/hvc_iucv.c
+++ b/drivers/char/hvc_iucv.c
@@ -12,6 +12,7 @@
 #define pr_fmt(fmt)		KMSG_COMPONENT ": " fmt
 
 #include <linux/types.h>
+#include <linux/slab.h>
 #include <asm/ebcdic.h>
 #include <linux/ctype.h>
 #include <linux/delay.h>
diff --git a/drivers/char/hvcs.c b/drivers/char/hvcs.c
index 266b858b8f85..bedc6c1b6fa5 100644
--- a/drivers/char/hvcs.c
+++ b/drivers/char/hvcs.c
@@ -74,6 +74,7 @@
 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <linux/sched.h>
+#include <linux/slab.h>
 #include <linux/spinlock.h>
 #include <linux/stat.h>
 #include <linux/tty.h>
diff --git a/drivers/char/hw_random/intel-rng.c b/drivers/char/hw_random/intel-rng.c
index 91b53eb1c053..86fe45c19968 100644
--- a/drivers/char/hw_random/intel-rng.c
+++ b/drivers/char/hw_random/intel-rng.c
@@ -30,6 +30,7 @@
 #include <linux/pci.h>
 #include <linux/stop_machine.h>
 #include <linux/delay.h>
+#include <linux/slab.h>
 #include <asm/io.h>
 
 
diff --git a/drivers/char/hw_random/octeon-rng.c b/drivers/char/hw_random/octeon-rng.c
index 54b0d9ba65cf..9cd0feca318c 100644
--- a/drivers/char/hw_random/octeon-rng.c
+++ b/drivers/char/hw_random/octeon-rng.c
@@ -15,6 +15,7 @@
 #include <linux/device.h>
 #include <linux/hw_random.h>
 #include <linux/io.h>
+#include <linux/gfp.h>
 
 #include <asm/octeon/octeon.h>
 #include <asm/octeon/cvmx-rnm-defs.h>
diff --git a/drivers/char/hw_random/tx4939-rng.c b/drivers/char/hw_random/tx4939-rng.c
index 544d9085a8e8..0bc0cb70210b 100644
--- a/drivers/char/hw_random/tx4939-rng.c
+++ b/drivers/char/hw_random/tx4939-rng.c
@@ -14,6 +14,7 @@
 #include <linux/io.h>
 #include <linux/platform_device.h>
 #include <linux/hw_random.h>
+#include <linux/gfp.h>
 
 #define TX4939_RNG_RCSR		0x00000000
 #define TX4939_RNG_ROR(n)	(0x00000018 + (n) * 8)
diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c
index ec5e3f8df648..c6ad4234378d 100644
--- a/drivers/char/ipmi/ipmi_msghandler.c
+++ b/drivers/char/ipmi/ipmi_msghandler.c
@@ -2272,42 +2272,52 @@ static int create_files(struct bmc_device *bmc)
 	bmc->device_id_attr.attr.name = "device_id";
 	bmc->device_id_attr.attr.mode = S_IRUGO;
 	bmc->device_id_attr.show = device_id_show;
+	sysfs_attr_init(&bmc->device_id_attr.attr);
 
 	bmc->provides_dev_sdrs_attr.attr.name = "provides_device_sdrs";
 	bmc->provides_dev_sdrs_attr.attr.mode = S_IRUGO;
 	bmc->provides_dev_sdrs_attr.show = provides_dev_sdrs_show;
+	sysfs_attr_init(&bmc->provides_dev_sdrs_attr.attr);
 
 	bmc->revision_attr.attr.name = "revision";
 	bmc->revision_attr.attr.mode = S_IRUGO;
 	bmc->revision_attr.show = revision_show;
+	sysfs_attr_init(&bmc->revision_attr.attr);
 
 	bmc->firmware_rev_attr.attr.name = "firmware_revision";
 	bmc->firmware_rev_attr.attr.mode = S_IRUGO;
 	bmc->firmware_rev_attr.show = firmware_rev_show;
+	sysfs_attr_init(&bmc->firmware_rev_attr.attr);
 
 	bmc->version_attr.attr.name = "ipmi_version";
 	bmc->version_attr.attr.mode = S_IRUGO;
 	bmc->version_attr.show = ipmi_version_show;
+	sysfs_attr_init(&bmc->version_attr.attr);
 
 	bmc->add_dev_support_attr.attr.name = "additional_device_support";
 	bmc->add_dev_support_attr.attr.mode = S_IRUGO;
 	bmc->add_dev_support_attr.show = add_dev_support_show;
+	sysfs_attr_init(&bmc->add_dev_support_attr.attr);
 
 	bmc->manufacturer_id_attr.attr.name = "manufacturer_id";
 	bmc->manufacturer_id_attr.attr.mode = S_IRUGO;
 	bmc->manufacturer_id_attr.show = manufacturer_id_show;
+	sysfs_attr_init(&bmc->manufacturer_id_attr.attr);
 
 	bmc->product_id_attr.attr.name = "product_id";
 	bmc->product_id_attr.attr.mode = S_IRUGO;
 	bmc->product_id_attr.show = product_id_show;
+	sysfs_attr_init(&bmc->product_id_attr.attr);
 
 	bmc->guid_attr.attr.name = "guid";
 	bmc->guid_attr.attr.mode = S_IRUGO;
 	bmc->guid_attr.show = guid_show;
+	sysfs_attr_init(&bmc->guid_attr.attr);
 
 	bmc->aux_firmware_rev_attr.attr.name = "aux_firmware_revision";
 	bmc->aux_firmware_rev_attr.attr.mode = S_IRUGO;
 	bmc->aux_firmware_rev_attr.show = aux_firmware_rev_show;
+	sysfs_attr_init(&bmc->aux_firmware_rev_attr.attr);
 
 	err = device_create_file(&bmc->dev->dev,
 			   &bmc->device_id_attr);
diff --git a/drivers/char/isicom.c b/drivers/char/isicom.c
index be2e8f9a27c3..c1ab303455cf 100644
--- a/drivers/char/isicom.c
+++ b/drivers/char/isicom.c
@@ -130,6 +130,7 @@
 #include <linux/timer.h>
 #include <linux/delay.h>
 #include <linux/ioport.h>
+#include <linux/slab.h>
 
 #include <linux/uaccess.h>
 #include <linux/io.h>
@@ -878,8 +879,8 @@ static int isicom_open(struct tty_struct *tty, struct file *filp)
 	if (tport == NULL)
 		return -ENODEV;
 	port = container_of(tport, struct isi_port, port);
-	card = &isi_card[BOARD(tty->index)];
 
+	tty->driver_data = port;
 	return tty_port_open(tport, tty, filp);
 }
 
@@ -935,7 +936,12 @@ static void isicom_shutdown(struct tty_port *port)
 static void isicom_close(struct tty_struct *tty, struct file *filp)
 {
 	struct isi_port *ip = tty->driver_data;
-	struct tty_port *port = &ip->port;
+	struct tty_port *port;
+
+	if (ip == NULL)
+		return;
+
+	port = &ip->port;
 	if (isicom_paranoia_check(ip, tty->name, "isicom_close"))
 		return;
 	tty_port_close(port, tty, filp);
diff --git a/drivers/char/istallion.c b/drivers/char/istallion.c
index 4cd6c527ee41..4e395c956a09 100644
--- a/drivers/char/istallion.c
+++ b/drivers/char/istallion.c
@@ -827,6 +827,8 @@ static int stli_open(struct tty_struct *tty, struct file *filp)
 		return -ENODEV;
 	if (portp->devnr < 1)
 		return -ENODEV;
+
+	tty->driver_data = portp;
 	return tty_port_open(&portp->port, tty, filp);
 }
 
diff --git a/drivers/char/mbcs.c b/drivers/char/mbcs.c
index 87c67b42bc08..83bef4efe376 100644
--- a/drivers/char/mbcs.c
+++ b/drivers/char/mbcs.c
@@ -26,6 +26,7 @@
 #include <linux/uio.h>
 #include <linux/mutex.h>
 #include <linux/smp_lock.h>
+#include <linux/slab.h>
 #include <asm/io.h>
 #include <asm/uaccess.h>
 #include <asm/system.h>
diff --git a/drivers/char/mem.c b/drivers/char/mem.c
index 1f3215ac085b..f54dab8acdcd 100644
--- a/drivers/char/mem.c
+++ b/drivers/char/mem.c
@@ -225,6 +225,7 @@ int __weak phys_mem_access_prot_allowed(struct file *file,
  * outside of main memory.
  *
  */
+#ifdef pgprot_noncached
 static int uncached_access(struct file *file, unsigned long addr)
 {
 #if defined(CONFIG_IA64)
@@ -251,6 +252,7 @@ static int uncached_access(struct file *file, unsigned long addr)
 	return addr >= __pa(high_memory);
 #endif
 }
+#endif
 
 static pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
 				     unsigned long size, pgprot_t vma_prot)
@@ -710,11 +712,6 @@ static loff_t memory_lseek(struct file *file, loff_t offset, int orig)
 	switch (orig) {
 	case SEEK_CUR:
 		offset += file->f_pos;
-		if ((unsigned long long)offset <
-		    (unsigned long long)file->f_pos) {
-			ret = -EOVERFLOW;
-			break;
-		}
 	case SEEK_SET:
 		/* to avoid userland mistaking f_pos=-9 as -EBADF=-9 */
 		if ((unsigned long long)offset >= ~0xFFFULL) {
@@ -908,6 +905,9 @@ static int __init chr_dev_init(void)
 		printk("unable to get major %d for memory devs\n", MEM_MAJOR);
 
 	mem_class = class_create(THIS_MODULE, "mem");
+	if (IS_ERR(mem_class))
+		return PTR_ERR(mem_class);
+
 	mem_class->devnode = mem_devnode;
 	for (minor = 1; minor < ARRAY_SIZE(devlist); minor++) {
 		if (!devlist[minor].name)
diff --git a/drivers/char/misc.c b/drivers/char/misc.c
index 94a136e96c06..92ab03d28294 100644
--- a/drivers/char/misc.c
+++ b/drivers/char/misc.c
@@ -40,7 +40,6 @@
 #include <linux/miscdevice.h>
 #include <linux/kernel.h>
 #include <linux/major.h>
-#include <linux/slab.h>
 #include <linux/mutex.h>
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
@@ -49,6 +48,7 @@
 #include <linux/device.h>
 #include <linux/tty.h>
 #include <linux/kmod.h>
+#include <linux/gfp.h>
 
 /*
  * Head entry for the doubly linked miscdevice list
diff --git a/drivers/char/mmtimer.c b/drivers/char/mmtimer.c
index 04fd0d843b3b..ea7c99fa978f 100644
--- a/drivers/char/mmtimer.c
+++ b/drivers/char/mmtimer.c
@@ -33,6 +33,7 @@
 #include <linux/time.h>
 #include <linux/math64.h>
 #include <linux/smp_lock.h>
+#include <linux/slab.h>
 
 #include <asm/uaccess.h>
 #include <asm/sn/addrs.h>
diff --git a/drivers/char/moxa.c b/drivers/char/moxa.c
index 166495d6a1d7..107b0bd58d19 100644
--- a/drivers/char/moxa.c
+++ b/drivers/char/moxa.c
@@ -43,6 +43,7 @@
 #include <linux/pci.h>
 #include <linux/init.h>
 #include <linux/bitops.h>
+#include <linux/slab.h>
 
 #include <asm/system.h>
 #include <asm/io.h>
diff --git a/drivers/char/mxser.c b/drivers/char/mxser.c
index e0c5d2a69046..d2692d443f7b 100644
--- a/drivers/char/mxser.c
+++ b/drivers/char/mxser.c
@@ -33,12 +33,12 @@
 #include <linux/string.h>
 #include <linux/fcntl.h>
 #include <linux/ptrace.h>
-#include <linux/gfp.h>
 #include <linux/ioport.h>
 #include <linux/mm.h>
 #include <linux/delay.h>
 #include <linux/pci.h>
 #include <linux/bitops.h>
+#include <linux/slab.h>
 
 #include <asm/system.h>
 #include <asm/io.h>
@@ -1011,6 +1011,7 @@ static int mxser_open(struct tty_struct *tty, struct file *filp)
 	if (!info->ioaddr)
 		return -ENODEV;
 
+	tty->driver_data = info;
 	return tty_port_open(&info->port, tty, filp);
 }
 
@@ -1074,7 +1075,7 @@ static void mxser_close(struct tty_struct *tty, struct file *filp)
 	struct mxser_port *info = tty->driver_data;
 	struct tty_port *port = &info->port;
 
-	if (tty->index == MXSER_PORTS)
+	if (tty->index == MXSER_PORTS || info == NULL)
 		return;
 	if (tty_port_close_start(port, tty, filp) == 0)
 		return;
@@ -1768,7 +1769,7 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file,
 		int len, lsr;
 
 		len = mxser_chars_in_buffer(tty);
-		spin_lock(&info->slock);
+		spin_lock_irq(&info->slock);
 		lsr = inb(info->ioaddr + UART_LSR) & UART_LSR_THRE;
 		spin_unlock_irq(&info->slock);
 		len += (lsr ? 0 : 1);
@@ -1778,12 +1779,12 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file,
 	case MOXA_ASPP_MON: {
 		int mcr, status;
 
-		spin_lock(&info->slock);
+		spin_lock_irq(&info->slock);
 		status = mxser_get_msr(info->ioaddr, 1, tty->index);
 		mxser_check_modem_status(tty, info, status);
 
 		mcr = inb(info->ioaddr + UART_MCR);
-		spin_unlock(&info->slock);
+		spin_unlock_irq(&info->slock);
 
 		if (mcr & MOXA_MUST_MCR_XON_FLAG)
 			info->mon_data.hold_reason &= ~NPPI_NOTIFY_XOFFHOLD;
diff --git a/drivers/char/nozomi.c b/drivers/char/nozomi.c
index a3f32a15fde4..a6638003f530 100644
--- a/drivers/char/nozomi.c
+++ b/drivers/char/nozomi.c
@@ -55,6 +55,7 @@
 #include <linux/init.h>
 #include <linux/kfifo.h>
 #include <linux/uaccess.h>
+#include <linux/slab.h>
 #include <asm/byteorder.h>
 
 #include <linux/delay.h>
diff --git a/drivers/char/nvram.c b/drivers/char/nvram.c
index 5eb83c3ca20d..47e8f7b0e4c1 100644
--- a/drivers/char/nvram.c
+++ b/drivers/char/nvram.c
@@ -100,7 +100,6 @@
 #include <linux/types.h>
 #include <linux/errno.h>
 #include <linux/miscdevice.h>
-#include <linux/slab.h>
 #include <linux/ioport.h>
 #include <linux/fcntl.h>
 #include <linux/mc146818rtc.h>
diff --git a/drivers/char/pcmcia/cm4000_cs.c b/drivers/char/pcmcia/cm4000_cs.c
index c9bc896d68af..90b199f97bec 100644
--- a/drivers/char/pcmcia/cm4000_cs.c
+++ b/drivers/char/pcmcia/cm4000_cs.c
@@ -1026,14 +1026,16 @@ static ssize_t cmm_read(struct file *filp, __user char *buf, size_t count,
 
 	xoutb(0, REG_FLAGS1(iobase));	/* clear detectCMM */
 	/* last check before exit */
-	if (!io_detect_cm4000(iobase, dev))
-		count = -ENODEV;
+	if (!io_detect_cm4000(iobase, dev)) {
+		rc = -ENODEV;
+		goto release_io;
+	}
 
 	if (test_bit(IS_INVREV, &dev->flags) && count > 0)
 		str_invert_revert(dev->rbuf, count);
 
 	if (copy_to_user(buf, dev->rbuf, count))
-		return -EFAULT;
+		rc = -EFAULT;
 
 release_io:
 	clear_bit(LOCK_IO, &dev->flags);
diff --git a/drivers/char/pcmcia/ipwireless/network.c b/drivers/char/pcmcia/ipwireless/network.c
index 590762a7f217..65920163f53d 100644
--- a/drivers/char/pcmcia/ipwireless/network.c
+++ b/drivers/char/pcmcia/ipwireless/network.c
@@ -21,6 +21,7 @@
 #include <linux/netdevice.h>
 #include <linux/ppp_channel.h>
 #include <linux/ppp_defs.h>
+#include <linux/slab.h>
 #include <linux/if_ppp.h>
 #include <linux/skbuff.h>
 
diff --git a/drivers/char/ppdev.c b/drivers/char/ppdev.c
index 432655bcb04c..fdd37543aa79 100644
--- a/drivers/char/ppdev.c
+++ b/drivers/char/ppdev.c
@@ -64,6 +64,7 @@
 #include <linux/parport.h>
 #include <linux/ctype.h>
 #include <linux/poll.h>
+#include <linux/slab.h>
 #include <linux/major.h>
 #include <linux/ppdev.h>
 #include <linux/smp_lock.h>
diff --git a/drivers/char/ps3flash.c b/drivers/char/ps3flash.c
index f424d394a286..606048b72bcf 100644
--- a/drivers/char/ps3flash.c
+++ b/drivers/char/ps3flash.c
@@ -20,6 +20,7 @@
 
 #include <linux/fs.h>
 #include <linux/miscdevice.h>
+#include <linux/slab.h>
 #include <linux/uaccess.h>
 
 #include <asm/lv1call.h>
diff --git a/drivers/char/pty.c b/drivers/char/pty.c
index 5ee424817263..d83a43130df4 100644
--- a/drivers/char/pty.c
+++ b/drivers/char/pty.c
@@ -29,6 +29,7 @@
 #include <linux/uaccess.h>
 #include <linux/bitops.h>
 #include <linux/devpts_fs.h>
+#include <linux/slab.h>
 
 #include <asm/system.h>
 
diff --git a/drivers/char/raw.c b/drivers/char/raw.c
index 64acd05f71c8..8756ab0daa8b 100644
--- a/drivers/char/raw.c
+++ b/drivers/char/raw.c
@@ -20,6 +20,7 @@
 #include <linux/device.h>
 #include <linux/mutex.h>
 #include <linux/smp_lock.h>
+#include <linux/gfp.h>
 
 #include <asm/uaccess.h>
 
@@ -247,6 +248,7 @@ static const struct file_operations raw_fops = {
 	.aio_read = 	generic_file_aio_read,
 	.write	=	do_sync_write,
 	.aio_write =	blkdev_aio_write,
+	.fsync	=	blkdev_fsync,
 	.open	=	raw_open,
 	.release=	raw_release,
 	.ioctl	=	raw_ioctl,
diff --git a/drivers/char/rio/rioinit.c b/drivers/char/rio/rioinit.c
index be0ba401966e..24a282bb89d4 100644
--- a/drivers/char/rio/rioinit.c
+++ b/drivers/char/rio/rioinit.c
@@ -31,7 +31,6 @@
 */
 
 #include <linux/module.h>
-#include <linux/slab.h>
 #include <linux/errno.h>
 #include <linux/delay.h>
 #include <asm/io.h>
diff --git a/drivers/char/rio/riointr.c b/drivers/char/rio/riointr.c
index 71f87600907c..2e71aecae206 100644
--- a/drivers/char/rio/riointr.c
+++ b/drivers/char/rio/riointr.c
@@ -31,7 +31,6 @@
 */
 
 #include <linux/module.h>
-#include <linux/slab.h>
 #include <linux/errno.h>
 #include <linux/tty.h>
 #include <linux/tty_flip.h>
diff --git a/drivers/char/rio/rioparam.c b/drivers/char/rio/rioparam.c
index d687c17be152..6415f3f32a72 100644
--- a/drivers/char/rio/rioparam.c
+++ b/drivers/char/rio/rioparam.c
@@ -31,7 +31,6 @@
 */
 
 #include <linux/module.h>
-#include <linux/slab.h>
 #include <linux/errno.h>
 #include <linux/tty.h>
 #include <asm/io.h>
diff --git a/drivers/char/rio/rioroute.c b/drivers/char/rio/rioroute.c
index 706c2a25f7aa..f9b936ac3394 100644
--- a/drivers/char/rio/rioroute.c
+++ b/drivers/char/rio/rioroute.c
@@ -31,7 +31,6 @@
 */
 
 #include <linux/module.h>
-#include <linux/slab.h>
 #include <linux/errno.h>
 #include <asm/io.h>
 #include <asm/system.h>
diff --git a/drivers/char/rio/riotty.c b/drivers/char/rio/riotty.c
index 47fab7c33073..8a90393faf3c 100644
--- a/drivers/char/rio/riotty.c
+++ b/drivers/char/rio/riotty.c
@@ -34,7 +34,6 @@
 
 #include <linux/module.h>
 #include <linux/sched.h>
-#include <linux/slab.h>
 #include <linux/errno.h>
 #include <linux/tty.h>
 #include <linux/string.h>
diff --git a/drivers/char/riscom8.c b/drivers/char/riscom8.c
index 0a8d1e56c993..b02332a5412f 100644
--- a/drivers/char/riscom8.c
+++ b/drivers/char/riscom8.c
@@ -909,6 +909,7 @@ static int rc_open(struct tty_struct *tty, struct file *filp)
 	if (error)
 		return error;
 
+	tty->driver_data = port;
 	return tty_port_open(&port->port, tty, filp);
 }
 
diff --git a/drivers/char/serial167.c b/drivers/char/serial167.c
index 1ec3d5cd748f..8dfd24721a82 100644
--- a/drivers/char/serial167.c
+++ b/drivers/char/serial167.c
@@ -64,6 +64,7 @@
 #include <linux/module.h>
 #include <linux/bitops.h>
 #include <linux/tty_flip.h>
+#include <linux/gfp.h>
 
 #include <asm/system.h>
 #include <asm/io.h>
diff --git a/drivers/char/snsc_event.c b/drivers/char/snsc_event.c
index 55a95892ccf9..ee156948b9f8 100644
--- a/drivers/char/snsc_event.c
+++ b/drivers/char/snsc_event.c
@@ -17,6 +17,7 @@
 
 #include <linux/interrupt.h>
 #include <linux/sched.h>
+#include <linux/slab.h>
 #include <asm/byteorder.h>
 #include <asm/sn/sn_sal.h>
 #include <asm/unaligned.h>
diff --git a/drivers/char/sonypi.c b/drivers/char/sonypi.c
index bba727c3807e..73f66d03624d 100644
--- a/drivers/char/sonypi.c
+++ b/drivers/char/sonypi.c
@@ -50,6 +50,7 @@
 #include <linux/err.h>
 #include <linux/kfifo.h>
 #include <linux/platform_device.h>
+#include <linux/gfp.h>
 
 #include <asm/uaccess.h>
 #include <asm/io.h>
diff --git a/drivers/char/specialix.c b/drivers/char/specialix.c
index 07ac14d949ce..2c24fcdc722a 100644
--- a/drivers/char/specialix.c
+++ b/drivers/char/specialix.c
@@ -94,6 +94,7 @@
 #include <linux/pci.h>
 #include <linux/init.h>
 #include <linux/uaccess.h>
+#include <linux/gfp.h>
 
 #include "specialix_io8.h"
 #include "cd1865.h"
diff --git a/drivers/char/stallion.c b/drivers/char/stallion.c
index 0e511d61f544..6049fd731924 100644
--- a/drivers/char/stallion.c
+++ b/drivers/char/stallion.c
@@ -724,7 +724,6 @@ static int stl_open(struct tty_struct *tty, struct file *filp)
 {
 	struct stlport	*portp;
 	struct stlbrd	*brdp;
-	struct tty_port *port;
 	unsigned int	minordev, brdnr, panelnr;
 	int		portnr;
 
@@ -754,7 +753,8 @@ static int stl_open(struct tty_struct *tty, struct file *filp)
 	portp = brdp->panels[panelnr]->ports[portnr];
 	if (portp == NULL)
 		return -ENODEV;
-	port = &portp->port;
+
+	tty->driver_data = portp;
 	return tty_port_open(&portp->port, tty, filp);
 
 }
@@ -841,7 +841,8 @@ static void stl_close(struct tty_struct *tty, struct file *filp)
 	pr_debug("stl_close(tty=%p,filp=%p)\n", tty, filp);
 
 	portp = tty->driver_data;
-	BUG_ON(portp == NULL);
+	if(portp == NULL)
+		return;
 	tty_port_close(&portp->port, tty, filp);
 }
 
diff --git a/drivers/char/sysrq.c b/drivers/char/sysrq.c
index 1ae2de7d8b4f..59de2525d303 100644
--- a/drivers/char/sysrq.c
+++ b/drivers/char/sysrq.c
@@ -38,6 +38,7 @@
 #include <linux/workqueue.h>
 #include <linux/hrtimer.h>
 #include <linux/oom.h>
+#include <linux/slab.h>
 
 #include <asm/ptrace.h>
 #include <asm/irq_regs.h>
diff --git a/drivers/char/tpm/tpm.c b/drivers/char/tpm/tpm.c
index f06bb37defb1..068c816e6942 100644
--- a/drivers/char/tpm/tpm.c
+++ b/drivers/char/tpm/tpm.c
@@ -24,6 +24,7 @@
  */
 
 #include <linux/poll.h>
+#include <linux/slab.h>
 #include <linux/mutex.h>
 #include <linux/spinlock.h>
 
diff --git a/drivers/char/tpm/tpm_bios.c b/drivers/char/tpm/tpm_bios.c
index bf2170fb1cdd..0636520fa9bf 100644
--- a/drivers/char/tpm/tpm_bios.c
+++ b/drivers/char/tpm/tpm_bios.c
@@ -22,6 +22,7 @@
 #include <linux/fs.h>
 #include <linux/security.h>
 #include <linux/module.h>
+#include <linux/slab.h>
 #include <acpi/acpi.h>
 #include "tpm.h"
 
diff --git a/drivers/char/tpm/tpm_nsc.c b/drivers/char/tpm/tpm_nsc.c
index 70efba2ee053..a605cb7dd898 100644
--- a/drivers/char/tpm/tpm_nsc.c
+++ b/drivers/char/tpm/tpm_nsc.c
@@ -20,6 +20,7 @@
  */
 
 #include <linux/platform_device.h>
+#include <linux/slab.h>
 #include "tpm.h"
 
 /* National definitions */
diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c
index 2405f17b29dd..94345994f8a6 100644
--- a/drivers/char/tpm/tpm_tis.c
+++ b/drivers/char/tpm/tpm_tis.c
@@ -22,6 +22,7 @@
 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <linux/pnp.h>
+#include <linux/slab.h>
 #include <linux/interrupt.h>
 #include <linux/wait.h>
 #include "tpm.h"
diff --git a/drivers/char/tty_audit.c b/drivers/char/tty_audit.c
index 283a15bc84e3..1b8ee590b4ca 100644
--- a/drivers/char/tty_audit.c
+++ b/drivers/char/tty_audit.c
@@ -10,6 +10,7 @@
  */
 
 #include <linux/audit.h>
+#include <linux/slab.h>
 #include <linux/tty.h>
 
 struct tty_audit_buf {
diff --git a/drivers/char/tty_buffer.c b/drivers/char/tty_buffer.c
index af8d97715728..7ee52164d474 100644
--- a/drivers/char/tty_buffer.c
+++ b/drivers/char/tty_buffer.c
@@ -248,7 +248,7 @@ int tty_insert_flip_string_fixed_flag(struct tty_struct *tty,
 {
 	int copied = 0;
 	do {
-		int goal = min(size - copied, TTY_BUFFER_PAGE);
+		int goal = min_t(size_t, size - copied, TTY_BUFFER_PAGE);
 		int space = tty_buffer_request_room(tty, goal);
 		struct tty_buffer *tb = tty->buf.tail;
 		/* If there is no space then tb may be NULL */
@@ -285,7 +285,7 @@ int tty_insert_flip_string_flags(struct tty_struct *tty,
 {
 	int copied = 0;
 	do {
-		int goal = min(size - copied, TTY_BUFFER_PAGE);
+		int goal = min_t(size_t, size - copied, TTY_BUFFER_PAGE);
 		int space = tty_buffer_request_room(tty, goal);
 		struct tty_buffer *tb = tty->buf.tail;
 		/* If there is no space then tb may be NULL */
diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c
index a42c466f7092..6da962c9b21c 100644
--- a/drivers/char/tty_io.c
+++ b/drivers/char/tty_io.c
@@ -1423,6 +1423,8 @@ static void release_one_tty(struct work_struct *work)
 	list_del_init(&tty->tty_files);
 	file_list_unlock();
 
+	put_pid(tty->pgrp);
+	put_pid(tty->session);
 	free_tty_struct(tty);
 }
 
diff --git a/drivers/char/tty_port.c b/drivers/char/tty_port.c
index be492dd66437..a3bd1d0b66cf 100644
--- a/drivers/char/tty_port.c
+++ b/drivers/char/tty_port.c
@@ -119,7 +119,7 @@ EXPORT_SYMBOL(tty_port_tty_set);
 static void tty_port_shutdown(struct tty_port *port)
 {
 	mutex_lock(&port->mutex);
-	if (port->ops->shutdown &&
+	if (port->ops->shutdown && !port->console &&
 		test_and_clear_bit(ASYNCB_INITIALIZED, &port->flags))
 			port->ops->shutdown(port);
 	mutex_unlock(&port->mutex);
diff --git a/drivers/char/viotape.c b/drivers/char/viotape.c
index 042c8149a6d1..1144a04cda6e 100644
--- a/drivers/char/viotape.c
+++ b/drivers/char/viotape.c
@@ -47,6 +47,7 @@
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
 #include <linux/smp_lock.h>
+#include <linux/slab.h>
 
 #include <asm/uaccess.h>
 #include <asm/ioctls.h>
diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c
index f404ccfc9c20..196428c2287a 100644
--- a/drivers/char/virtio_console.c
+++ b/drivers/char/virtio_console.c
@@ -25,6 +25,7 @@
 #include <linux/list.h>
 #include <linux/poll.h>
 #include <linux/sched.h>
+#include <linux/slab.h>
 #include <linux/spinlock.h>
 #include <linux/virtio.h>
 #include <linux/virtio_console.h>
@@ -32,6 +33,35 @@
 #include <linux/workqueue.h>
 #include "hvc_console.h"
 
+/* Moved here from .h file in order to disable MULTIPORT. */
+#define VIRTIO_CONSOLE_F_MULTIPORT 1	/* Does host provide multiple ports? */
+
+struct virtio_console_multiport_conf {
+	struct virtio_console_config config;
+	/* max. number of ports this device can hold */
+	__u32 max_nr_ports;
+	/* number of ports added so far */
+	__u32 nr_ports;
+} __attribute__((packed));
+
+/*
+ * A message that's passed between the Host and the Guest for a
+ * particular port.
+ */
+struct virtio_console_control {
+	__u32 id;		/* Port number */
+	__u16 event;		/* The kind of control event (see below) */
+	__u16 value;		/* Extra information for the key */
+};
+
+/* Some events for control messages */
+#define VIRTIO_CONSOLE_PORT_READY	0
+#define VIRTIO_CONSOLE_CONSOLE_PORT	1
+#define VIRTIO_CONSOLE_RESIZE		2
+#define VIRTIO_CONSOLE_PORT_OPEN	3
+#define VIRTIO_CONSOLE_PORT_NAME	4
+#define VIRTIO_CONSOLE_PORT_REMOVE	5
+
 /*
  * This is a global struct for storing common data for all the devices
  * this driver handles.
@@ -120,7 +150,7 @@ struct ports_device {
 	spinlock_t cvq_lock;
 
 	/* The current config space is stored here */
-	struct virtio_console_config config;
+	struct virtio_console_multiport_conf config;
 
 	/* The virtio device we're associated with */
 	struct virtio_device *vdev;
@@ -415,20 +445,16 @@ static ssize_t send_buf(struct port *port, void *in_buf, size_t in_count)
 	out_vq->vq_ops->kick(out_vq);
 
 	if (ret < 0) {
-		len = 0;
+		in_count = 0;
 		goto fail;
 	}
 
-	/*
-	 * Wait till the host acknowledges it pushed out the data we
-	 * sent. Also ensure we return to userspace the number of
-	 * bytes that were successfully consumed by the host.
-	 */
+	/* Wait till the host acknowledges it pushed out the data we sent. */
 	while (!out_vq->vq_ops->get_buf(out_vq, &len))
 		cpu_relax();
 fail:
 	/* We're expected to return the amount of data we wrote */
-	return len;
+	return in_count;
 }
 
 /*
@@ -645,13 +671,13 @@ static int put_chars(u32 vtermno, const char *buf, int count)
 {
 	struct port *port;
 
+	if (unlikely(early_put_chars))
+		return early_put_chars(vtermno, buf, count);
+
 	port = find_port_by_vtermno(vtermno);
 	if (!port)
 		return 0;
 
-	if (unlikely(early_put_chars))
-		return early_put_chars(vtermno, buf, count);
-
 	return send_buf(port, (void *)buf, count);
 }
 
@@ -681,6 +707,10 @@ static void resize_console(struct port *port)
 	struct virtio_device *vdev;
 	struct winsize ws;
 
+	/* The port could have been hot-unplugged */
+	if (!port)
+		return;
+
 	vdev = port->portdev->vdev;
 	if (virtio_has_feature(vdev, VIRTIO_CONSOLE_F_SIZE)) {
 		vdev->config->get(vdev,
@@ -947,11 +977,18 @@ static void handle_control_message(struct ports_device *portdev,
 		 */
 		err = sysfs_create_group(&port->dev->kobj,
 					 &port_attribute_group);
-		if (err)
+		if (err) {
 			dev_err(port->dev,
 				"Error %d creating sysfs device attributes\n",
 				err);
-
+		} else {
+			/*
+			 * Generate a udev event so that appropriate
+			 * symlinks can be created based on udev
+			 * rules.
+			 */
+			kobject_uevent(&port->dev->kobj, KOBJ_CHANGE);
+		}
 		break;
 	case VIRTIO_CONSOLE_PORT_REMOVE:
 		/*
@@ -1206,7 +1243,7 @@ fail:
  */
 static void config_work_handler(struct work_struct *work)
 {
-	struct virtio_console_config virtconconf;
+	struct virtio_console_multiport_conf virtconconf;
 	struct ports_device *portdev;
 	struct virtio_device *vdev;
 	int err;
@@ -1215,7 +1252,8 @@ static void config_work_handler(struct work_struct *work)
 
 	vdev = portdev->vdev;
 	vdev->config->get(vdev,
-			  offsetof(struct virtio_console_config, nr_ports),
+			  offsetof(struct virtio_console_multiport_conf,
+				   nr_ports),
 			  &virtconconf.nr_ports,
 			  sizeof(virtconconf.nr_ports));
 
@@ -1407,16 +1445,19 @@ static int __devinit virtcons_probe(struct virtio_device *vdev)
 	multiport = false;
 	portdev->config.nr_ports = 1;
 	portdev->config.max_nr_ports = 1;
+#if 0 /* Multiport is not quite ready yet --RR */
 	if (virtio_has_feature(vdev, VIRTIO_CONSOLE_F_MULTIPORT)) {
 		multiport = true;
 		vdev->features[0] |= 1 << VIRTIO_CONSOLE_F_MULTIPORT;
 
-		vdev->config->get(vdev, offsetof(struct virtio_console_config,
-						 nr_ports),
+		vdev->config->get(vdev,
+				  offsetof(struct virtio_console_multiport_conf,
+					   nr_ports),
 				  &portdev->config.nr_ports,
 				  sizeof(portdev->config.nr_ports));
-		vdev->config->get(vdev, offsetof(struct virtio_console_config,
-						 max_nr_ports),
+		vdev->config->get(vdev,
+				  offsetof(struct virtio_console_multiport_conf,
+					   max_nr_ports),
 				  &portdev->config.max_nr_ports,
 				  sizeof(portdev->config.max_nr_ports));
 		if (portdev->config.nr_ports > portdev->config.max_nr_ports) {
@@ -1432,6 +1473,7 @@ static int __devinit virtcons_probe(struct virtio_device *vdev)
 
 	/* Let the Host know we support multiple ports.*/
 	vdev->config->finalize_features(vdev);
+#endif
 
 	err = init_vqs(portdev);
 	if (err < 0) {
@@ -1514,7 +1556,6 @@ static struct virtio_device_id id_table[] = {
 
 static unsigned int features[] = {
 	VIRTIO_CONSOLE_F_SIZE,
-	VIRTIO_CONSOLE_F_MULTIPORT,
 };
 
 static struct virtio_driver virtio_console = {
diff --git a/drivers/char/vme_scc.c b/drivers/char/vme_scc.c
index 8b24729fec89..12de1202d22c 100644
--- a/drivers/char/vme_scc.c
+++ b/drivers/char/vme_scc.c
@@ -27,7 +27,6 @@
 #include <linux/fcntl.h>
 #include <linux/major.h>
 #include <linux/delay.h>
-#include <linux/slab.h>
 #include <linux/miscdevice.h>
 #include <linux/console.h>
 #include <linux/init.h>
diff --git a/drivers/char/vt_ioctl.c b/drivers/char/vt_ioctl.c
index 87778dcf8727..6aa10284104a 100644
--- a/drivers/char/vt_ioctl.c
+++ b/drivers/char/vt_ioctl.c
@@ -888,7 +888,7 @@ int vt_ioctl(struct tty_struct *tty, struct file * file,
 			ret = -EFAULT;
 			goto out;
 		}
-		if (tmp.mode != VT_AUTO && tmp.mode != VT_PROCESS && tmp.mode != VT_PROCESS_AUTO) {
+		if (tmp.mode != VT_AUTO && tmp.mode != VT_PROCESS) {
 			ret = -EINVAL;
 			goto out;
 		}
@@ -1622,7 +1622,7 @@ static void complete_change_console(struct vc_data *vc)
 	 * telling it that it has acquired. Also check if it has died and
 	 * clean up (similar to logic employed in change_console())
 	 */
-	if (vc->vt_mode.mode == VT_PROCESS || vc->vt_mode.mode == VT_PROCESS_AUTO) {
+	if (vc->vt_mode.mode == VT_PROCESS) {
 		/*
 		 * Send the signal as privileged - kill_pid() will
 		 * tell us if the process has gone or something else
@@ -1682,7 +1682,7 @@ void change_console(struct vc_data *new_vc)
 	 * vt to auto control.
 	 */
 	vc = vc_cons[fg_console].d;
-	if (vc->vt_mode.mode == VT_PROCESS || vc->vt_mode.mode == VT_PROCESS_AUTO) {
+	if (vc->vt_mode.mode == VT_PROCESS) {
 		/*
 		 * Send the signal as privileged - kill_pid() will
 		 * tell us if the process has gone or something else
@@ -1693,28 +1693,27 @@ void change_console(struct vc_data *new_vc)
 		 */
 		vc->vt_newvt = new_vc->vc_num;
 		if (kill_pid(vc->vt_pid, vc->vt_mode.relsig, 1) == 0) {
-			if(vc->vt_mode.mode == VT_PROCESS)
-				/*
-				 * It worked. Mark the vt to switch to and
-				 * return. The process needs to send us a
-				 * VT_RELDISP ioctl to complete the switch.
-				 */
-				return;
-		} else {
 			/*
-			 * The controlling process has died, so we revert back to
-			 * normal operation. In this case, we'll also change back
-			 * to KD_TEXT mode. I'm not sure if this is strictly correct
-			 * but it saves the agony when the X server dies and the screen
-			 * remains blanked due to KD_GRAPHICS! It would be nice to do
-			 * this outside of VT_PROCESS but there is no single process
-			 * to account for and tracking tty count may be undesirable.
+			 * It worked. Mark the vt to switch to and
+			 * return. The process needs to send us a
+			 * VT_RELDISP ioctl to complete the switch.
 			 */
-			reset_vc(vc);
+			return;
 		}
 
 		/*
-		 * Fall through to normal (VT_AUTO and VT_PROCESS_AUTO) handling of the switch...
+		 * The controlling process has died, so we revert back to
+		 * normal operation. In this case, we'll also change back
+		 * to KD_TEXT mode. I'm not sure if this is strictly correct
+		 * but it saves the agony when the X server dies and the screen
+		 * remains blanked due to KD_GRAPHICS! It would be nice to do
+		 * this outside of VT_PROCESS but there is no single process
+		 * to account for and tracking tty count may be undesirable.
+		 */
+		reset_vc(vc);
+
+		/*
+		 * Fall through to normal (VT_AUTO) handling of the switch...
 		 */
 	}
 
diff --git a/drivers/char/xilinx_hwicap/xilinx_hwicap.c b/drivers/char/xilinx_hwicap/xilinx_hwicap.c
index 4846d50199f3..7261b8d9087c 100644
--- a/drivers/char/xilinx_hwicap/xilinx_hwicap.c
+++ b/drivers/char/xilinx_hwicap/xilinx_hwicap.c
@@ -86,6 +86,7 @@
 #include <linux/fs.h>
 #include <linux/cdev.h>
 #include <linux/platform_device.h>
+#include <linux/slab.h>
 
 #include <asm/io.h>
 #include <asm/uaccess.h>