185 files changed, 9197 insertions, 990 deletions

diff --git a/drivers/acpi/bay.c b/drivers/acpi/bay.c
index 26038c2a2a71..61b6c5beb2d3 100644
--- a/drivers/acpi/bay.c
+++ b/drivers/acpi/bay.c
@@ -377,6 +377,9 @@ static int __init bay_init(void)
 
         INIT_LIST_HEAD(&drive_bays);
 
+        if (acpi_disabled)
+                return -ENODEV;
+
         /* look for dockable drive bays */
         acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
                 ACPI_UINT32_MAX, find_bay, &bays, NULL);
diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c
index 96c542f7fded..bb7c51f712bd 100644
--- a/drivers/acpi/dock.c
+++ b/drivers/acpi/dock.c
@@ -917,6 +917,9 @@ static int __init dock_init(void)
 
         dock_station = NULL;
 
+        if (acpi_disabled)
+                return 0;
+
         /* look for a dock station */
         acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
                             ACPI_UINT32_MAX, find_dock, &num, NULL);
diff --git a/drivers/acpi/glue.c b/drivers/acpi/glue.c
index 2808dc60fd67..9b227d4dc9c9 100644
--- a/drivers/acpi/glue.c
+++ b/drivers/acpi/glue.c
@@ -333,6 +333,9 @@ static int __init acpi_rtc_init(void)
 {
         struct device *dev = get_rtc_dev();
 
+        if (acpi_disabled)
+                return 0;
+
         if (dev) {
                 rtc_wake_setup();
                 rtc_info.wake_on = rtc_wake_on;
diff --git a/drivers/acpi/sleep/main.c b/drivers/acpi/sleep/main.c
index c3b0cd88d09f..495c63a3e0af 100644
--- a/drivers/acpi/sleep/main.c
+++ b/drivers/acpi/sleep/main.c
@@ -36,9 +36,8 @@ static int acpi_sleep_prepare(u32 acpi_state)
                 if (!acpi_wakeup_address) {
                         return -EFAULT;
                 }
-                acpi_set_firmware_waking_vector((acpi_physical_address)
-                                                virt_to_phys((void *)
-                                                             acpi_wakeup_address));
+                acpi_set_firmware_waking_vector(
+                                (acpi_physical_address)acpi_wakeup_address);
 
         }
         ACPI_FLUSH_CPU_CACHE();
diff --git a/drivers/acpi/sleep/proc.c b/drivers/acpi/sleep/proc.c
index 224c57c03381..4ebbba2b6b19 100644
--- a/drivers/acpi/sleep/proc.c
+++ b/drivers/acpi/sleep/proc.c
@@ -315,8 +315,11 @@ acpi_system_write_alarm(struct file *file,
                 cmos_bcd_write(day, acpi_gbl_FADT.day_alarm, rtc_control);
         if (acpi_gbl_FADT.month_alarm)
                 cmos_bcd_write(mo, acpi_gbl_FADT.month_alarm, rtc_control);
-        if (acpi_gbl_FADT.century)
+        if (acpi_gbl_FADT.century) {
+                if (adjust)
+                        yr += cmos_bcd_read(acpi_gbl_FADT.century, rtc_control) * 100;
                 cmos_bcd_write(yr / 100, acpi_gbl_FADT.century, rtc_control);
+        }
         /* enable the rtc alarm interrupt */
         rtc_control |= RTC_AIE;
         CMOS_WRITE(rtc_control, RTC_CONTROL);
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 6a4a2a25d97a..5e6468a7ca4b 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -1777,7 +1777,7 @@ static irqreturn_t ahci_interrupt(int irq, void *dev_instance)
         struct ahci_host_priv *hpriv;
         unsigned int i, handled = 0;
         void __iomem *mmio;
-        u32 irq_stat, irq_ack = 0;
+        u32 irq_stat, irq_masked;
 
         VPRINTK("ENTER\n");
 
@@ -1786,16 +1786,17 @@ static irqreturn_t ahci_interrupt(int irq, void *dev_instance)
 
         /* sigh.  0xffffffff is a valid return from h/w */
         irq_stat = readl(mmio + HOST_IRQ_STAT);
-        irq_stat &= hpriv->port_map;
         if (!irq_stat)
                 return IRQ_NONE;
 
+        irq_masked = irq_stat & hpriv->port_map;
+
         spin_lock(&host->lock);
 
         for (i = 0; i < host->n_ports; i++) {
                 struct ata_port *ap;
 
-                if (!(irq_stat & (1 << i)))
+                if (!(irq_masked & (1 << i)))
                         continue;
 
                 ap = host->ports[i];
@@ -1809,14 +1810,20 @@ static irqreturn_t ahci_interrupt(int irq, void *dev_instance)
                                         "interrupt on disabled port %u\n", i);
                 }
 
-                irq_ack |= (1 << i);
-        }
-
-        if (irq_ack) {
-                writel(irq_ack, mmio + HOST_IRQ_STAT);
                 handled = 1;
         }
 
+        /* HOST_IRQ_STAT behaves as level triggered latch meaning that
+         * it should be cleared after all the port events are cleared;
+         * otherwise, it will raise a spurious interrupt after each
+         * valid one.  Please read section 10.6.2 of ahci 1.1 for more
+         * information.
+         *
+         * Also, use the unmasked value to clear interrupt as spurious
+         * pending event on a dummy port might cause screaming IRQ.
+         */
+        writel(irq_stat, mmio + HOST_IRQ_STAT);
+
         spin_unlock(&host->lock);
 
         VPRINTK("EXIT\n");
diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c
index 215d18672a5a..c0908c225483 100644
--- a/drivers/ata/libata-sff.c
+++ b/drivers/ata/libata-sff.c
@@ -1094,6 +1094,7 @@ static void ata_hsm_qc_complete(struct ata_queued_cmd *qc, int in_wq)
 int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc,
                      u8 status, int in_wq)
 {
+        struct ata_eh_info *ehi = &ap->link.eh_info;
         unsigned long flags = 0;
         int poll_next;
 
@@ -1125,9 +1126,12 @@ fsm_start:
                         if (likely(status & (ATA_ERR | ATA_DF)))
                                 /* device stops HSM for abort/error */
                                 qc->err_mask |= AC_ERR_DEV;
-                        else
+                        else {
                                 /* HSM violation. Let EH handle this */
+                                ata_ehi_push_desc(ehi,
+                                        "ST_FIRST: !(DRQ|ERR|DF)");
                                 qc->err_mask |= AC_ERR_HSM;
+                        }
 
                         ap->hsm_task_state = HSM_ST_ERR;
                         goto fsm_start;
@@ -1146,9 +1150,9 @@ fsm_start:
                          * the CDB.
                          */
                         if (!(qc->dev->horkage & ATA_HORKAGE_STUCK_ERR)) {
-                                ata_port_printk(ap, KERN_WARNING,
-                                                "DRQ=1 with device error, "
-                                                "dev_stat 0x%X\n", status);
+                                ata_ehi_push_desc(ehi, "ST_FIRST: "
+                                        "DRQ=1 with device error, "
+                                        "dev_stat 0x%X", status);
                                 qc->err_mask |= AC_ERR_HSM;
                                 ap->hsm_task_state = HSM_ST_ERR;
                                 goto fsm_start;
@@ -1205,9 +1209,9 @@ fsm_start:
                          * let the EH abort the command or reset the device.
                          */
                         if (unlikely(status & (ATA_ERR | ATA_DF))) {
-                                ata_port_printk(ap, KERN_WARNING, "DRQ=1 with "
-                                                "device error, dev_stat 0x%X\n",
-                                                status);
+                                ata_ehi_push_desc(ehi, "ST-ATAPI: "
+                                        "DRQ=1 with device error, "
+                                        "dev_stat 0x%X", status);
                                 qc->err_mask |= AC_ERR_HSM;
                                 ap->hsm_task_state = HSM_ST_ERR;
                                 goto fsm_start;
@@ -1226,13 +1230,17 @@ fsm_start:
                                 if (likely(status & (ATA_ERR | ATA_DF)))
                                         /* device stops HSM for abort/error */
                                         qc->err_mask |= AC_ERR_DEV;
-                                else
+                                else {
                                         /* HSM violation. Let EH handle this.
                                          * Phantom devices also trigger this
                                          * condition.  Mark hint.
                                          */
+                                        ata_ehi_push_desc(ehi, "ST-ATA: "
+                                                "DRQ=1 with device error, "
+                                                "dev_stat 0x%X", status);
                                         qc->err_mask |= AC_ERR_HSM |
                                                         AC_ERR_NODEV_HINT;
+                                }
 
                                 ap->hsm_task_state = HSM_ST_ERR;
                                 goto fsm_start;
@@ -1257,8 +1265,12 @@ fsm_start:
                                         status = ata_wait_idle(ap);
                                 }
 
-                                if (status & (ATA_BUSY | ATA_DRQ))
+                                if (status & (ATA_BUSY | ATA_DRQ)) {
+                                        ata_ehi_push_desc(ehi, "ST-ATA: "
+                                                "BUSY|DRQ persists on ERR|DF, "
+                                                "dev_stat 0x%X", status);
                                         qc->err_mask |= AC_ERR_HSM;
+                                }
 
                                 /* ata_pio_sectors() might change the
                                  * state to HSM_ST_LAST. so, the state
diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c
index 28092bc50146..ad169ffbc4cb 100644
--- a/drivers/ata/sata_mv.c
+++ b/drivers/ata/sata_mv.c
@@ -1607,7 +1607,7 @@ static unsigned int mv_qc_issue(struct ata_queued_cmd *qc)
                  * Much of the time, this could just work regardless.
                  * So for now, just log the incident, and allow the attempt.
                  */
-                if (limit_warnings && (qc->nbytes / qc->sect_size) > 1) {
+                if (limit_warnings > 0 && (qc->nbytes / qc->sect_size) > 1) {
                         --limit_warnings;
                         ata_link_printk(qc->dev->link, KERN_WARNING, DRV_NAME
                                         ": attempting PIO w/multiple DRQ: "
diff --git a/drivers/ata/sata_sil24.c b/drivers/ata/sata_sil24.c
index 8ee6b5b4ede7..84ffcc26a74b 100644
--- a/drivers/ata/sata_sil24.c
+++ b/drivers/ata/sata_sil24.c
@@ -370,6 +370,7 @@ static const struct pci_device_id sil24_pci_tbl[] = {
         { PCI_VDEVICE(INTEL, 0x3124), BID_SIL3124 },
         { PCI_VDEVICE(CMD, 0x3132), BID_SIL3132 },
         { PCI_VDEVICE(CMD, 0x0242), BID_SIL3132 },
+        { PCI_VDEVICE(CMD, 0x0244), BID_SIL3132 },
         { PCI_VDEVICE(CMD, 0x3131), BID_SIL3131 },
         { PCI_VDEVICE(CMD, 0x3531), BID_SIL3131 },
 
diff --git a/drivers/ata/sata_uli.c b/drivers/ata/sata_uli.c
index f277cea904ce..db529b849948 100644
--- a/drivers/ata/sata_uli.c
+++ b/drivers/ata/sata_uli.c
@@ -83,6 +83,7 @@ static struct ata_port_operations uli_ops = {
         .inherits               = &ata_bmdma_port_ops,
         .scr_read               = uli_scr_read,
         .scr_write              = uli_scr_write,
+        .hardreset              = ATA_OP_NULL,
 };
 
 static const struct ata_port_info uli_port_info = {
diff --git a/drivers/auxdisplay/Kconfig b/drivers/auxdisplay/Kconfig
index 043353bd0600..14b9d5f4c203 100644
--- a/drivers/auxdisplay/Kconfig
+++ b/drivers/auxdisplay/Kconfig
@@ -64,7 +64,7 @@ config KS0108_DELAY
           Amount of time the ks0108 should wait between each control write
           to the parallel port.
 
-          If your driver seems to miss random writings, increment this.
+          If your LCD seems to miss random writings, increment this.
 
           If you don't know what I'm talking about, ignore it.
 
diff --git a/drivers/auxdisplay/cfag12864b.c b/drivers/auxdisplay/cfag12864b.c
index 80bb06105387..683509f013ab 100644
--- a/drivers/auxdisplay/cfag12864b.c
+++ b/drivers/auxdisplay/cfag12864b.c
@@ -5,7 +5,7 @@
  *     License: GPLv2
  *     Depends: ks0108
  *
- *      Author: Copyright (C) Miguel Ojeda Sandonis <maxextreme@gmail.com>
+ *      Author: Copyright (C) Miguel Ojeda Sandonis
  *        Date: 2006-10-31
  *
  *  This program is free software; you can redistribute it and/or modify
@@ -398,5 +398,5 @@ module_init(cfag12864b_init);
 module_exit(cfag12864b_exit);
 
 MODULE_LICENSE("GPL v2");
-MODULE_AUTHOR("Miguel Ojeda Sandonis <maxextreme@gmail.com>");
+MODULE_AUTHOR("Miguel Ojeda Sandonis <miguel.ojeda.sandonis@gmail.com>");
 MODULE_DESCRIPTION("cfag12864b LCD driver");
diff --git a/drivers/auxdisplay/cfag12864bfb.c b/drivers/auxdisplay/cfag12864bfb.c
index 307c190699e0..fe3a865be4e5 100644
--- a/drivers/auxdisplay/cfag12864bfb.c
+++ b/drivers/auxdisplay/cfag12864bfb.c
@@ -5,7 +5,7 @@
  *     License: GPLv2
  *     Depends: cfag12864b
  *
- *      Author: Copyright (C) Miguel Ojeda Sandonis <maxextreme@gmail.com>
+ *      Author: Copyright (C) Miguel Ojeda Sandonis
  *        Date: 2006-10-31
  *
  *  This program is free software; you can redistribute it and/or modify
@@ -186,5 +186,5 @@ module_init(cfag12864bfb_init);
 module_exit(cfag12864bfb_exit);
 
 MODULE_LICENSE("GPL v2");
-MODULE_AUTHOR("Miguel Ojeda Sandonis <maxextreme@gmail.com>");
+MODULE_AUTHOR("Miguel Ojeda Sandonis <miguel.ojeda.sandonis@gmail.com>");
 MODULE_DESCRIPTION("cfag12864b LCD framebuffer driver");
diff --git a/drivers/auxdisplay/ks0108.c b/drivers/auxdisplay/ks0108.c
index e6c3646ef18c..5b93852392b8 100644
--- a/drivers/auxdisplay/ks0108.c
+++ b/drivers/auxdisplay/ks0108.c
@@ -5,7 +5,7 @@
  *     License: GPLv2
  *     Depends: parport
  *
- *      Author: Copyright (C) Miguel Ojeda Sandonis <maxextreme@gmail.com>
+ *      Author: Copyright (C) Miguel Ojeda Sandonis
  *        Date: 2006-10-31
  *
  *  This program is free software; you can redistribute it and/or modify
@@ -173,6 +173,6 @@ module_init(ks0108_init);
 module_exit(ks0108_exit);
 
 MODULE_LICENSE("GPL v2");
-MODULE_AUTHOR("Miguel Ojeda Sandonis <maxextreme@gmail.com>");
+MODULE_AUTHOR("Miguel Ojeda Sandonis <miguel.ojeda.sandonis@gmail.com>");
 MODULE_DESCRIPTION("ks0108 LCD Controller driver");
 
diff --git a/drivers/base/node.c b/drivers/base/node.c
index 39f3d1b3a213..0f867a083338 100644
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -84,8 +84,8 @@ static ssize_t node_read_meminfo(struct sys_device * dev, char * buf)
                        nid, K(i.totalram),
                        nid, K(i.freeram),
                        nid, K(i.totalram - i.freeram),
-                       nid, node_page_state(nid, NR_ACTIVE),
-                       nid, node_page_state(nid, NR_INACTIVE),
+                       nid, K(node_page_state(nid, NR_ACTIVE)),
+                       nid, K(node_page_state(nid, NR_INACTIVE)),
 #ifdef CONFIG_HIGHMEM
                        nid, K(i.totalhigh),
                        nid, K(i.freehigh),
diff --git a/drivers/base/power/trace.c b/drivers/base/power/trace.c
index 2b4b392dcbc1..87a7f1d02578 100644
--- a/drivers/base/power/trace.c
+++ b/drivers/base/power/trace.c
@@ -153,7 +153,7 @@ EXPORT_SYMBOL(set_trace_device);
  * it's not any guarantee, but it's a high _likelihood_ that
  * the match is valid).
  */
-void generate_resume_trace(void *tracedata, unsigned int user)
+void generate_resume_trace(const void *tracedata, unsigned int user)
 {
         unsigned short lineno = *(unsigned short *)tracedata;
         const char *file = *(const char **)(tracedata + 2);
diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c
index 5f1e1cc6165a..d81632cd7d06 100644
--- a/drivers/block/cciss.c
+++ b/drivers/block/cciss.c
@@ -106,35 +106,34 @@ MODULE_DEVICE_TABLE(pci, cciss_pci_device_id);
 /*  board_id = Subsystem Device ID & Vendor ID
  *  product = Marketing Name for the board
  *  access = Address of the struct of function pointers
- *  nr_cmds = Number of commands supported by controller
  */
 static struct board_type products[] = {
-        {0x40700E11, "Smart Array 5300", &SA5_access, 512},
-        {0x40800E11, "Smart Array 5i", &SA5B_access, 512},
-        {0x40820E11, "Smart Array 532", &SA5B_access, 512},
-        {0x40830E11, "Smart Array 5312", &SA5B_access, 512},
-        {0x409A0E11, "Smart Array 641", &SA5_access, 512},
-        {0x409B0E11, "Smart Array 642", &SA5_access, 512},
-        {0x409C0E11, "Smart Array 6400", &SA5_access, 512},
-        {0x409D0E11, "Smart Array 6400 EM", &SA5_access, 512},
-        {0x40910E11, "Smart Array 6i", &SA5_access, 512},
-        {0x3225103C, "Smart Array P600", &SA5_access, 512},
-        {0x3223103C, "Smart Array P800", &SA5_access, 512},
-        {0x3234103C, "Smart Array P400", &SA5_access, 512},
-        {0x3235103C, "Smart Array P400i", &SA5_access, 512},
-        {0x3211103C, "Smart Array E200i", &SA5_access, 120},
-        {0x3212103C, "Smart Array E200", &SA5_access, 120},
-        {0x3213103C, "Smart Array E200i", &SA5_access, 120},
-        {0x3214103C, "Smart Array E200i", &SA5_access, 120},
-        {0x3215103C, "Smart Array E200i", &SA5_access, 120},
-        {0x3237103C, "Smart Array E500", &SA5_access, 512},
-        {0x323D103C, "Smart Array P700m", &SA5_access, 512},
-        {0x3241103C, "Smart Array P212", &SA5_access, 384},
-        {0x3243103C, "Smart Array P410", &SA5_access, 384},
-        {0x3245103C, "Smart Array P410i", &SA5_access, 384},
-        {0x3247103C, "Smart Array P411", &SA5_access, 384},
-        {0x3249103C, "Smart Array P812", &SA5_access, 384},
-        {0xFFFF103C, "Unknown Smart Array", &SA5_access, 120},
+        {0x40700E11, "Smart Array 5300", &SA5_access},
+        {0x40800E11, "Smart Array 5i", &SA5B_access},
+        {0x40820E11, "Smart Array 532", &SA5B_access},
+        {0x40830E11, "Smart Array 5312", &SA5B_access},
+        {0x409A0E11, "Smart Array 641", &SA5_access},
+        {0x409B0E11, "Smart Array 642", &SA5_access},
+        {0x409C0E11, "Smart Array 6400", &SA5_access},
+        {0x409D0E11, "Smart Array 6400 EM", &SA5_access},
+        {0x40910E11, "Smart Array 6i", &SA5_access},
+        {0x3225103C, "Smart Array P600", &SA5_access},
+        {0x3223103C, "Smart Array P800", &SA5_access},
+        {0x3234103C, "Smart Array P400", &SA5_access},
+        {0x3235103C, "Smart Array P400i", &SA5_access},
+        {0x3211103C, "Smart Array E200i", &SA5_access},
+        {0x3212103C, "Smart Array E200", &SA5_access},
+        {0x3213103C, "Smart Array E200i", &SA5_access},
+        {0x3214103C, "Smart Array E200i", &SA5_access},
+        {0x3215103C, "Smart Array E200i", &SA5_access},
+        {0x3237103C, "Smart Array E500", &SA5_access},
+        {0x323D103C, "Smart Array P700m", &SA5_access},
+        {0x3241103C, "Smart Array P212", &SA5_access},
+        {0x3243103C, "Smart Array P410", &SA5_access},
+        {0x3245103C, "Smart Array P410i", &SA5_access},
+        {0x3247103C, "Smart Array P411", &SA5_access},
+        {0x3249103C, "Smart Array P812", &SA5_access},
+        {0xFFFF103C, "Unknown Smart Array", &SA5_access},
 };
 
 /* How long to wait (in milliseconds) for board to go into simple mode */
@@ -3086,11 +3085,20 @@ static int __devinit cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
         print_cfg_table(c->cfgtable);
 #endif                          /* CCISS_DEBUG */
 
+        /* Some controllers support Zero Memory Raid (ZMR).
+         * When configured in ZMR mode the number of supported
+         * commands drops to 64. So instead of just setting an
+         * arbitrary value we make the driver a little smarter.
+         * We read the config table to tell us how many commands
+         * are supported on the controller then subtract 4 to
+         * leave a little room for ioctl calls.
+         */
+        c->max_commands = readl(&(c->cfgtable->CmdsOutMax));
         for (i = 0; i < ARRAY_SIZE(products); i++) {
                 if (board_id == products[i].board_id) {
                         c->product_name = products[i].product_name;
                         c->access = *(products[i].access);
-                        c->nr_cmds = products[i].nr_cmds;
+                        c->nr_cmds = c->max_commands - 4;
                         break;
                 }
         }
@@ -3110,7 +3118,7 @@ static int __devinit cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
                 if (subsystem_vendor_id == PCI_VENDOR_ID_HP) {
                         c->product_name = products[i-1].product_name;
                         c->access = *(products[i-1].access);
-                        c->nr_cmds = products[i-1].nr_cmds;
+                        c->nr_cmds = c->max_commands - 4;
                         printk(KERN_WARNING "cciss: This is an unknown "
                                 "Smart Array controller.\n"
                                 "cciss: Please update to the latest driver "
@@ -3546,6 +3554,10 @@ static int __devinit cciss_init_one(struct pci_dev *pdev,
         for (j = 0; j <= hba[i]->highest_lun; j++)
                 add_disk(hba[i]->gendisk[j]);
 
+        /* we must register the controller even if no disks exist */
+        if (hba[i]->highest_lun == -1)
+                add_disk(hba[i]->gendisk[0]);
+
         return 1;
 
       clean4:
diff --git a/drivers/char/agp/amd64-agp.c b/drivers/char/agp/amd64-agp.c
index 13665db363d6..481ffe87c716 100644
--- a/drivers/char/agp/amd64-agp.c
+++ b/drivers/char/agp/amd64-agp.c
@@ -16,28 +16,9 @@
 #include <asm/page.h>           /* PAGE_SIZE */
 #include <asm/e820.h>
 #include <asm/k8.h>
+#include <asm/gart.h>
 #include "agp.h"
 
-/* PTE bits. */
-#define GPTE_VALID      1
-#define GPTE_COHERENT   2
-
-/* Aperture control register bits. */
-#define GARTEN          (1<<0)
-#define DISGARTCPU      (1<<4)
-#define DISGARTIO       (1<<5)
-
-/* GART cache control register bits. */
-#define INVGART         (1<<0)
-#define GARTPTEERR      (1<<1)
-
-/* K8 On-cpu GART registers */
-#define AMD64_GARTAPERTURECTL   0x90
-#define AMD64_GARTAPERTUREBASE  0x94
-#define AMD64_GARTTABLEBASE     0x98
-#define AMD64_GARTCACHECTL      0x9c
-#define AMD64_GARTEN            (1<<0)
-
 /* NVIDIA K8 registers */
 #define NVIDIA_X86_64_0_APBASE          0x10
 #define NVIDIA_X86_64_1_APBASE1         0x50
@@ -165,29 +146,18 @@ static int amd64_fetch_size(void)
  * In a multiprocessor x86-64 system, this function gets
  * called once for each CPU.
  */
-static u64 amd64_configure (struct pci_dev *hammer, u64 gatt_table)
+static u64 amd64_configure(struct pci_dev *hammer, u64 gatt_table)
 {
         u64 aperturebase;
         u32 tmp;
-        u64 addr, aper_base;
+        u64 aper_base;
 
         /* Address to map to */
-        pci_read_config_dword (hammer, AMD64_GARTAPERTUREBASE, &tmp);
+        pci_read_config_dword(hammer, AMD64_GARTAPERTUREBASE, &tmp);
         aperturebase = tmp << 25;
         aper_base = (aperturebase & PCI_BASE_ADDRESS_MEM_MASK);
 
-        /* address of the mappings table */
-        addr = (u64) gatt_table;
-        addr >>= 12;
-        tmp = (u32) addr<<4;
-        tmp &= ~0xf;
-        pci_write_config_dword (hammer, AMD64_GARTTABLEBASE, tmp);
-
-        /* Enable GART translation for this hammer. */
-        pci_read_config_dword(hammer, AMD64_GARTAPERTURECTL, &tmp);
-        tmp |= GARTEN;
-        tmp &= ~(DISGARTCPU | DISGARTIO);
-        pci_write_config_dword(hammer, AMD64_GARTAPERTURECTL, tmp);
+        enable_gart_translation(hammer, gatt_table);
 
         return aper_base;
 }
@@ -226,9 +196,9 @@ static void amd64_cleanup(void)
         for (i = 0; i < num_k8_northbridges; i++) {
                 struct pci_dev *dev = k8_northbridges[i];
                 /* disable gart translation */
-                pci_read_config_dword (dev, AMD64_GARTAPERTURECTL, &tmp);
+                pci_read_config_dword(dev, AMD64_GARTAPERTURECTL, &tmp);
                 tmp &= ~AMD64_GARTEN;
-                pci_write_config_dword (dev, AMD64_GARTAPERTURECTL, tmp);
+                pci_write_config_dword(dev, AMD64_GARTAPERTURECTL, tmp);
         }
 }
 
@@ -258,24 +228,10 @@ static const struct agp_bridge_driver amd_8151_driver = {
 };
 
 /* Some basic sanity checks for the aperture. */
-static int __devinit aperture_valid(u64 aper, u32 size)
+static int __devinit agp_aperture_valid(u64 aper, u32 size)
 {
-        if (aper == 0) {
-                printk(KERN_ERR PFX "No aperture\n");
-                return 0;
-        }
-        if (size < 32*1024*1024) {
-                printk(KERN_ERR PFX "Aperture too small (%d MB)\n", size>>20);
-                return 0;
-        }
-       if ((u64)aper + size > 0x100000000ULL) {
-                printk(KERN_ERR PFX "Aperture out of bounds\n");
+        if (!aperture_valid(aper, size, 32*1024*1024))
                 return 0;
-        }
-        if (e820_any_mapped(aper, aper + size, E820_RAM)) {
-                printk(KERN_ERR PFX "Aperture pointing to RAM\n");
-                return 0;
-        }
 
         /* Request the Aperture. This catches cases when someone else
            already put a mapping in there - happens with some very broken BIOS
@@ -308,11 +264,11 @@ static __devinit int fix_northbridge(struct pci_dev *nb, struct pci_dev *agp,
         u32 nb_order, nb_base;
         u16 apsize;
 
-        pci_read_config_dword(nb, 0x90, &nb_order);
+        pci_read_config_dword(nb, AMD64_GARTAPERTURECTL, &nb_order);
         nb_order = (nb_order >> 1) & 7;
-        pci_read_config_dword(nb, 0x94, &nb_base);
+        pci_read_config_dword(nb, AMD64_GARTAPERTUREBASE, &nb_base);
         nb_aper = nb_base << 25;
-        if (aperture_valid(nb_aper, (32*1024*1024)<<nb_order)) {
+        if (agp_aperture_valid(nb_aper, (32*1024*1024)<<nb_order)) {
                 return 0;
         }
 
@@ -331,12 +287,23 @@ static __devinit int fix_northbridge(struct pci_dev *nb, struct pci_dev *agp,
         pci_read_config_dword(agp, 0x10, &aper_low);
         pci_read_config_dword(agp, 0x14, &aper_hi);
         aper = (aper_low & ~((1<<22)-1)) | ((u64)aper_hi << 32);
+
+        /*
+         * On some sick chips APSIZE is 0. This means it wants 4G
+         * so let double check that order, and lets trust the AMD NB settings
+         */
+        if (order >=0 && aper + (32ULL<<(20 + order)) > 0x100000000ULL) {
+                printk(KERN_INFO "Aperture size %u MB is not right, using settings from NB\n",
+                                  32 << order);
+                order = nb_order;
+        }
+
         printk(KERN_INFO PFX "Aperture from AGP @ %Lx size %u MB\n", aper, 32 << order);
-        if (order < 0 || !aperture_valid(aper, (32*1024*1024)<<order))
+        if (order < 0 || !agp_aperture_valid(aper, (32*1024*1024)<<order))
                 return -1;
 
-        pci_write_config_dword(nb, 0x90, order << 1);
-        pci_write_config_dword(nb, 0x94, aper >> 25);
+        pci_write_config_dword(nb, AMD64_GARTAPERTURECTL, order << 1);
+        pci_write_config_dword(nb, AMD64_GARTAPERTUREBASE, aper >> 25);
 
         return 0;
 }
diff --git a/drivers/char/drm/i915_irq.c b/drivers/char/drm/i915_irq.c
index f7f16e7a8bf3..df036118b8b1 100644
--- a/drivers/char/drm/i915_irq.c
+++ b/drivers/char/drm/i915_irq.c
@@ -62,11 +62,11 @@ static void i915_vblank_tasklet(struct drm_device *dev)
         u32 ropcpp = (0xcc << 16) | ((cpp - 1) << 24);
         RING_LOCALS;
 
-        if (sarea_priv->front_tiled) {
+        if (IS_I965G(dev) && sarea_priv->front_tiled) {
                 cmd |= XY_SRC_COPY_BLT_DST_TILED;
                 dst_pitch >>= 2;
         }
-        if (sarea_priv->back_tiled) {
+        if (IS_I965G(dev) && sarea_priv->back_tiled) {
                 cmd |= XY_SRC_COPY_BLT_SRC_TILED;
                 src_pitch >>= 2;
         }
diff --git a/drivers/char/hvc_xen.c b/drivers/char/hvc_xen.c
index dd68f8541c2d..db2ae4216279 100644
--- a/drivers/char/hvc_xen.c
+++ b/drivers/char/hvc_xen.c
@@ -39,9 +39,14 @@ static int xencons_irq;
 
 /* ------------------------------------------------------------------ */
 
+static unsigned long console_pfn = ~0ul;
+
 static inline struct xencons_interface *xencons_interface(void)
 {
-        return mfn_to_virt(xen_start_info->console.domU.mfn);
+        if (console_pfn == ~0ul)
+                return mfn_to_virt(xen_start_info->console.domU.mfn);
+        else
+                return __va(console_pfn << PAGE_SHIFT);
 }
 
 static inline void notify_daemon(void)
@@ -101,20 +106,32 @@ static int __init xen_init(void)
 {
         struct hvc_struct *hp;
 
-        if (!is_running_on_xen())
-                return 0;
+        if (!is_running_on_xen() ||
+            is_initial_xendomain() ||
+            !xen_start_info->console.domU.evtchn)
+                return -ENODEV;
 
         xencons_irq = bind_evtchn_to_irq(xen_start_info->console.domU.evtchn);
         if (xencons_irq < 0)
-                xencons_irq = 0 /* NO_IRQ */;
+                xencons_irq = 0; /* NO_IRQ */
+
         hp = hvc_alloc(HVC_COOKIE, xencons_irq, &hvc_ops, 256);
         if (IS_ERR(hp))
                 return PTR_ERR(hp);
 
         hvc = hp;
+
+        console_pfn = mfn_to_pfn(xen_start_info->console.domU.mfn);
+
         return 0;
 }
 
+void xen_console_resume(void)
+{
+        if (xencons_irq)
+                rebind_evtchn_irq(xen_start_info->console.domU.evtchn, xencons_irq);
+}
+
 static void __exit xen_fini(void)
 {
         if (hvc)
@@ -134,12 +151,28 @@ module_init(xen_init);
 module_exit(xen_fini);
 console_initcall(xen_cons_init);
 
+static void raw_console_write(const char *str, int len)
+{
+        while(len > 0) {
+                int rc = HYPERVISOR_console_io(CONSOLEIO_write, len, (char *)str);
+                if (rc <= 0)
+                        break;
+
+                str += rc;
+                len -= rc;
+        }
+}
+
+#ifdef CONFIG_EARLY_PRINTK
 static void xenboot_write_console(struct console *console, const char *string,
                                   unsigned len)
 {
         unsigned int linelen, off = 0;
         const char *pos;
 
+        raw_console_write(string, len);
+
+        write_console(0, "(early) ", 8);
         while (off < len && NULL != (pos = strchr(string+off, '\n'))) {
                 linelen = pos-string+off;
                 if (off + linelen > len)
@@ -155,5 +188,23 @@ static void xenboot_write_console(struct console *console, const char *string,
 struct console xenboot_console = {
         .name           = "xenboot",
         .write          = xenboot_write_console,
-        .flags          = CON_PRINTBUFFER | CON_BOOT,
+        .flags          = CON_PRINTBUFFER | CON_BOOT | CON_ANYTIME,
 };
+#endif  /* CONFIG_EARLY_PRINTK */
+
+void xen_raw_console_write(const char *str)
+{
+        raw_console_write(str, strlen(str));
+}
+
+void xen_raw_printk(const char *fmt, ...)
+{
+        static char buf[512];
+        va_list ap;
+
+        va_start(ap, fmt);
+        vsnprintf(buf, sizeof(buf), fmt, ap);
+        va_end(ap);
+
+        xen_raw_console_write(buf);
+}
diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c
index e94bee032314..750131010af0 100644
--- a/drivers/char/tty_io.c
+++ b/drivers/char/tty_io.c
@@ -3322,7 +3322,7 @@ static int send_break(struct tty_struct *tty, unsigned int duration)
                 msleep_interruptible(duration);
         tty->ops->break_ctl(tty, 0);
         tty_write_unlock(tty);
-        if (!signal_pending(current))
+        if (signal_pending(current))
                 return -EINTR;
         return 0;
 }
diff --git a/drivers/connector/connector.c b/drivers/connector/connector.c
index 85e2ba7fcfba..bf4830082a13 100644
--- a/drivers/connector/connector.c
+++ b/drivers/connector/connector.c
@@ -27,6 +27,8 @@
 #include <linux/moduleparam.h>
 #include <linux/connector.h>
 #include <linux/mutex.h>
+#include <linux/proc_fs.h>
+#include <linux/spinlock.h>
 
 #include <net/sock.h>
 
@@ -403,6 +405,40 @@ static void cn_callback(void *data)
         mutex_unlock(&notify_lock);
 }
 
+static int cn_proc_show(struct seq_file *m, void *v)
+{
+        struct cn_queue_dev *dev = cdev.cbdev;
+        struct cn_callback_entry *cbq;
+
+        seq_printf(m, "Name            ID\n");
+
+        spin_lock_bh(&dev->queue_lock);
+
+        list_for_each_entry(cbq, &dev->queue_list, callback_entry) {
+                seq_printf(m, "%-15s %u:%u\n",
+                           cbq->id.name,
+                           cbq->id.id.idx,
+                           cbq->id.id.val);
+        }
+
+        spin_unlock_bh(&dev->queue_lock);
+
+        return 0;
+}
+
+static int cn_proc_open(struct inode *inode, struct file *file)
+{
+        return single_open(file, cn_proc_show, NULL);
+}
+
+static const struct file_operations cn_file_ops = {
+        .owner   = THIS_MODULE,
+        .open    = cn_proc_open,
+        .read    = seq_read,
+        .llseek  = seq_lseek,
+        .release = single_release
+};
+
 static int __devinit cn_init(void)
 {
         struct cn_dev *dev = &cdev;
@@ -434,6 +470,8 @@ static int __devinit cn_init(void)
                 return -EINVAL;
         }
 
+        proc_net_fops_create(&init_net, "connector", S_IRUGO, &cn_file_ops);
+
         return 0;
 }
 
@@ -443,6 +481,8 @@ static void __devexit cn_fini(void)
 
         cn_already_initialized = 0;
 
+        proc_net_remove(&init_net, "connector");
+
         cn_del_callback(&dev->id);
         cn_queue_free_dev(dev->cbdev);
         netlink_kernel_release(dev->nls);
diff --git a/drivers/firewire/fw-sbp2.c b/drivers/firewire/fw-sbp2.c
index b2458bb8e9ca..227d2e036cd8 100644
--- a/drivers/firewire/fw-sbp2.c
+++ b/drivers/firewire/fw-sbp2.c
@@ -1051,7 +1051,8 @@ static int sbp2_scan_unit_dir(struct sbp2_target *tgt, u32 *directory,
                         break;
 
                 case SBP2_CSR_LOGICAL_UNIT_DIRECTORY:
-                        if (sbp2_scan_logical_unit_dir(tgt, ci.p + value) < 0)
+                        /* Adjust for the increment in the iterator */
+                        if (sbp2_scan_logical_unit_dir(tgt, ci.p - 1 + value) < 0)
                                 return -ENOMEM;
                         break;
                 }
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index bbd28342e771..008c38ba774f 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -28,12 +28,18 @@ config DEBUG_GPIO
 comment "I2C GPIO expanders:"
 
 config GPIO_PCA953X
-        tristate "PCA953x I/O ports"
+        tristate "PCA953x, PCA955x, and MAX7310 I/O ports"
         depends on I2C
         help
-          Say yes here to support the PCA9534 (8-bit), PCA9535 (16-bit),
-          PCA9536 (4-bit), PCA9537 (4-bit), PCA9538 (8-bit), and PCA9539
-          (16-bit) I/O ports. These parts are made by NXP and TI.
+          Say yes here to provide access to several register-oriented
+          SMBus I/O expanders, made mostly by NXP or TI.  Compatible
+          models include:
+
+          4 bits:       pca9536, pca9537
+
+          8 bits:       max7310, pca9534, pca9538, pca9554, pca9557
+
+          16 bits:      pca9535, pca9539, pca9555
 
           This driver can also be built as a module.  If so, the module
           will be called pca953x.
diff --git a/drivers/gpio/pca953x.c b/drivers/gpio/pca953x.c
index 7e40e8a55edf..a380730b61ab 100644
--- a/drivers/gpio/pca953x.c
+++ b/drivers/gpio/pca953x.c
@@ -33,7 +33,7 @@ static const struct i2c_device_id pca953x_id[] = {
         { "pca9554", 8, },
         { "pca9555", 16, },
         { "pca9557", 8, },
-        /* REVISIT several pca955x parts should work here too */
+        { "max7310", 8, },
         { }
 };
 MODULE_DEVICE_TABLE(i2c, pca953x_id);
diff --git a/drivers/hwmon/hdaps.c b/drivers/hwmon/hdaps.c
index 26df06f840eb..50f22690d611 100644
--- a/drivers/hwmon/hdaps.c
+++ b/drivers/hwmon/hdaps.c
@@ -516,17 +516,23 @@ static struct dmi_system_id __initdata hdaps_whitelist[] = {
         HDAPS_DMI_MATCH_NORMAL("IBM", "ThinkPad R51"),
         HDAPS_DMI_MATCH_NORMAL("IBM", "ThinkPad R52"),
         HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad R61i"),
+        HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad R61"),
         HDAPS_DMI_MATCH_INVERT("IBM", "ThinkPad T41p"),
         HDAPS_DMI_MATCH_NORMAL("IBM", "ThinkPad T41"),
         HDAPS_DMI_MATCH_INVERT("IBM", "ThinkPad T42p"),
         HDAPS_DMI_MATCH_NORMAL("IBM", "ThinkPad T42"),
         HDAPS_DMI_MATCH_NORMAL("IBM", "ThinkPad T43"),
         HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad T60"),
+        HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad T61p"),
         HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad T61"),
         HDAPS_DMI_MATCH_NORMAL("IBM", "ThinkPad X40"),
         HDAPS_DMI_MATCH_NORMAL("IBM", "ThinkPad X41"),
         HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad X60"),
+        HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad X61s"),
+        HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad X61"),
         HDAPS_DMI_MATCH_NORMAL("IBM", "ThinkPad Z60m"),
+        HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad Z61m"),
+        HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad Z61p"),
         { .ident = NULL }
 };
 
diff --git a/drivers/i2c/busses/i2c-s3c2410.c b/drivers/i2c/busses/i2c-s3c2410.c
index 1305ef190fc1..9e8c875437be 100644
--- a/drivers/i2c/busses/i2c-s3c2410.c
+++ b/drivers/i2c/busses/i2c-s3c2410.c
@@ -290,12 +290,12 @@ static int i2s_s3c_irq_nextbyte(struct s3c24xx_i2c *i2c, unsigned long iicstat)
                  * bus, or started a new i2c message
                  */
                 
-                if (iicstat  & S3C2410_IICSTAT_LASTBIT &&
+                if (iicstat & S3C2410_IICSTAT_LASTBIT &&
                     !(i2c->msg->flags & I2C_M_IGNORE_NAK)) {
                         /* ack was not received... */
 
                         dev_dbg(i2c->dev, "ack was not received\n");
-                        s3c24xx_i2c_stop(i2c, -EREMOTEIO);
+                        s3c24xx_i2c_stop(i2c, -ENXIO);
                         goto out_ack;
                 }
 
@@ -305,7 +305,7 @@ static int i2s_s3c_irq_nextbyte(struct s3c24xx_i2c *i2c, unsigned long iicstat)
                         i2c->state = STATE_WRITE;
 
                 /* terminate the transfer if there is nothing to do
-                 * (used by the i2c probe to find devices */
+                 * as this is used by the i2c probe to find devices. */
 
                 if (is_lastmsg(i2c) && i2c->msg->len == 0) {
                         s3c24xx_i2c_stop(i2c, 0);
@@ -323,7 +323,17 @@ static int i2s_s3c_irq_nextbyte(struct s3c24xx_i2c *i2c, unsigned long iicstat)
                  * end of the message, and if so, work out what to do
                  */
 
+                if (!(i2c->msg->flags & I2C_M_IGNORE_NAK)) {
+                        if (iicstat & S3C2410_IICSTAT_LASTBIT) {
+                                dev_dbg(i2c->dev, "WRITE: No Ack\n");
+
+                                s3c24xx_i2c_stop(i2c, -ECONNREFUSED);
+                                goto out_ack;
+                        }
+                }
+
         retry_write:
+
                 if (!is_msgend(i2c)) {
                         byte = i2c->msg->buf[i2c->msg_ptr++];
                         writeb(byte, i2c->regs + S3C2410_IICDS);
@@ -377,17 +387,6 @@ static int i2s_s3c_irq_nextbyte(struct s3c24xx_i2c *i2c, unsigned long iicstat)
                  * going to do any more read/write
                  */
 
-                if (!(i2c->msg->flags & I2C_M_IGNORE_NAK) &&
-                    !(is_msglast(i2c) && is_lastmsg(i2c))) {
-
-                        if (iicstat & S3C2410_IICSTAT_LASTBIT) {
-                                dev_dbg(i2c->dev, "READ: No Ack\n");
-
-                                s3c24xx_i2c_stop(i2c, -ECONNREFUSED);
-                                goto out_ack;
-                        }
-                }
-
                 byte = readb(i2c->regs + S3C2410_IICDS);
                 i2c->msg->buf[i2c->msg_ptr++] = byte;
 
@@ -949,3 +948,4 @@ MODULE_DESCRIPTION("S3C24XX I2C Bus driver");
 MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("platform:s3c2410-i2c");
+MODULE_ALIAS("platform:s3c2440-i2c");
diff --git a/drivers/ide/Kconfig b/drivers/ide/Kconfig
index 8e07de23d220..1607536ff5fb 100644
--- a/drivers/ide/Kconfig
+++ b/drivers/ide/Kconfig
@@ -823,6 +823,13 @@ config BLK_DEV_IDE_RAPIDE
           Say Y here if you want to support the Yellowstone RapIDE controller
           manufactured for use with Acorn computers.
 
+config BLK_DEV_IDE_BAST
+        tristate "Simtec BAST / Thorcom VR1000 IDE support"
+        depends on ARM && (ARCH_BAST || MACH_VR1000)
+        help
+          Say Y here if you want to support the onboard IDE channels on the
+          Simtec BAST or the Thorcom VR1000
+
 config IDE_H8300
         tristate "H8300 IDE support"
         depends on H8300
diff --git a/drivers/ide/arm/Makefile b/drivers/ide/arm/Makefile
index 5bc26053afa6..936e7b0237f5 100644
--- a/drivers/ide/arm/Makefile
+++ b/drivers/ide/arm/Makefile
@@ -1,6 +1,7 @@
 
 obj-$(CONFIG_BLK_DEV_IDE_ICSIDE)        += icside.o
 obj-$(CONFIG_BLK_DEV_IDE_RAPIDE)        += rapide.o
+obj-$(CONFIG_BLK_DEV_IDE_BAST)          += bast-ide.o
 obj-$(CONFIG_BLK_DEV_PALMCHIP_BK3710)   += palm_bk3710.o
 
 ifeq ($(CONFIG_IDE_ARM), m)
diff --git a/drivers/ide/arm/bast-ide.c b/drivers/ide/arm/bast-ide.c
new file mode 100644
index 000000000000..8e8c28104b45
--- /dev/null
+++ b/drivers/ide/arm/bast-ide.c
@@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 2003-2004 Simtec Electronics
+ *  Ben Dooks <ben@simtec.co.uk>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+*/
+
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/ide.h>
+#include <linux/init.h>
+
+#include <asm/mach-types.h>
+
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/arch/map.h>
+#include <asm/arch/bast-map.h>
+#include <asm/arch/bast-irq.h>
+
+#define DRV_NAME "bast-ide"
+
+static int __init bastide_register(unsigned int base, unsigned int aux, int irq)
+{
+        ide_hwif_t *hwif;
+        hw_regs_t hw;
+        int i;
+        u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
+
+        memset(&hw, 0, sizeof(hw));
+
+        base += BAST_IDE_CS;
+        aux  += BAST_IDE_CS;
+
+        for (i = 0; i <= 7; i++) {
+                hw.io_ports_array[i] = (unsigned long)base;
+                base += 0x20;
+        }
+
+        hw.io_ports.ctl_addr = aux + (6 * 0x20);
+        hw.irq = irq;
+        hw.chipset = ide_generic;
+
+        hwif = ide_find_port();
+        if (hwif == NULL)
+                goto out;
+
+        i = hwif->index;
+
+        ide_init_port_data(hwif, i);
+        ide_init_port_hw(hwif, &hw);
+        hwif->port_ops = NULL;
+
+        idx[0] = i;
+
+        ide_device_add(idx, NULL);
+out:
+        return 0;
+}
+
+static int __init bastide_init(void)
+{
+        unsigned long base = BAST_VA_IDEPRI + BAST_IDE_CS;
+
+        /* we can treat the VR1000 and the BAST the same */
+
+        if (!(machine_is_bast() || machine_is_vr1000()))
+                return 0;
+
+        printk("BAST: IDE driver, (c) 2003-2004 Simtec Electronics\n");
+
+        if (!request_mem_region(base, 0x400000, DRV_NAME)) {
+                printk(KERN_ERR "%s: resources busy\n", DRV_NAME);
+                return -EBUSY;
+        }
+
+        bastide_register(BAST_VA_IDEPRI, BAST_VA_IDEPRIAUX, IRQ_IDE0);
+        bastide_register(BAST_VA_IDESEC, BAST_VA_IDESECAUX, IRQ_IDE1);
+
+        return 0;
+}
+
+module_init(bastide_init);
+
+MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Simtec BAST / Thorcom VR1000 IDE driver");
diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c
index 380fa0c8cc84..d27061b39324 100644
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -646,8 +646,6 @@ static int ide_register_port(ide_hwif_t *hwif)
                 goto out;
         }
 
-        get_device(&hwif->gendev);
-
         hwif->portdev = device_create_drvdata(ide_port_class, &hwif->gendev,
                                               MKDEV(0, 0), hwif, hwif->name);
         if (IS_ERR(hwif->portdev)) {
diff --git a/drivers/ide/ide-proc.c b/drivers/ide/ide-proc.c
index 55ec7f798772..8af88bf0969b 100644
--- a/drivers/ide/ide-proc.c
+++ b/drivers/ide/ide-proc.c
@@ -76,7 +76,7 @@ static int proc_ide_read_mate
         ide_hwif_t      *hwif = (ide_hwif_t *) data;
         int             len;
 
-        if (hwif && hwif->mate && hwif->mate->present)
+        if (hwif && hwif->mate)
                 len = sprintf(page, "%s\n", hwif->mate->name);
         else
                 len = sprintf(page, "(none)\n");
diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index c758dcb13b14..300431d080a9 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -315,13 +315,14 @@ void ide_unregister(ide_hwif_t *hwif)
 
         BUG_ON(in_interrupt());
         BUG_ON(irqs_disabled());
+
         mutex_lock(&ide_cfg_mtx);
-        spin_lock_irq(&ide_lock);
-        if (!hwif->present)
-                goto abort;
-        __ide_port_unregister_devices(hwif);
-        hwif->present = 0;
 
+        spin_lock_irq(&ide_lock);
+        if (hwif->present) {
+                __ide_port_unregister_devices(hwif);
+                hwif->present = 0;
+        }
         spin_unlock_irq(&ide_lock);
 
         ide_proc_unregister_port(hwif);
@@ -351,16 +352,15 @@ void ide_unregister(ide_hwif_t *hwif)
         blk_unregister_region(MKDEV(hwif->major, 0), MAX_DRIVES<<PARTN_BITS);
         kfree(hwif->sg_table);
         unregister_blkdev(hwif->major, hwif->name);
-        spin_lock_irq(&ide_lock);
 
         if (hwif->dma_base)
                 ide_release_dma_engine(hwif);
 
+        spin_lock_irq(&ide_lock);
         /* restore hwif data to pristine status */
         ide_init_port_data(hwif, hwif->index);
-
-abort:
         spin_unlock_irq(&ide_lock);
+
         mutex_unlock(&ide_cfg_mtx);
 }
 
@@ -1094,13 +1094,6 @@ struct bus_type ide_bus_type = {
 
 EXPORT_SYMBOL_GPL(ide_bus_type);
 
-static void ide_port_class_release(struct device *portdev)
-{
-        ide_hwif_t *hwif = dev_get_drvdata(portdev);
-
-        put_device(&hwif->gendev);
-}
-
 int ide_vlb_clk;
 EXPORT_SYMBOL_GPL(ide_vlb_clk);
 
@@ -1305,7 +1298,6 @@ static int __init ide_init(void)
                 ret = PTR_ERR(ide_port_class);
                 goto out_port_class;
         }
-        ide_port_class->dev_release = ide_port_class_release;
 
         init_ide_data();
 
diff --git a/drivers/input/ff-core.c b/drivers/input/ff-core.c
index eebc72465fc9..72c63e5dd630 100644
--- a/drivers/input/ff-core.c
+++ b/drivers/input/ff-core.c
@@ -28,6 +28,7 @@
 #include <linux/input.h>
 #include <linux/module.h>
 #include <linux/mutex.h>
+#include <linux/sched.h>
 
 /*
  * Check that the effect_id is a valid effect and whether the user
@@ -166,8 +167,10 @@ int input_ff_upload(struct input_dev *dev, struct ff_effect *effect,
         if (ret)
                 goto out;
 
+        spin_lock_irq(&dev->event_lock);
         ff->effects[id] = *effect;
         ff->effect_owners[id] = file;
+        spin_unlock_irq(&dev->event_lock);
 
  out:
         mutex_unlock(&ff->mutex);
@@ -189,16 +192,22 @@ static int erase_effect(struct input_dev *dev, int effect_id,
         if (error)
                 return error;
 
+        spin_lock_irq(&dev->event_lock);
         ff->playback(dev, effect_id, 0);
+        ff->effect_owners[effect_id] = NULL;
+        spin_unlock_irq(&dev->event_lock);
 
         if (ff->erase) {
                 error = ff->erase(dev, effect_id);
-                if (error)
+                if (error) {
+                        spin_lock_irq(&dev->event_lock);
+                        ff->effect_owners[effect_id] = file;
+                        spin_unlock_irq(&dev->event_lock);
+
                         return error;
+                }
         }
 
-        ff->effect_owners[effect_id] = NULL;
-
         return 0;
 }
 
@@ -263,8 +272,6 @@ int input_ff_event(struct input_dev *dev, unsigned int type,
         if (type != EV_FF)
                 return 0;
 
-        mutex_lock(&ff->mutex);
-
         switch (code) {
         case FF_GAIN:
                 if (!test_bit(FF_GAIN, dev->ffbit) || value > 0xffff)
@@ -286,7 +293,6 @@ int input_ff_event(struct input_dev *dev, unsigned int type,
                 break;
         }
 
-        mutex_unlock(&ff->mutex);
         return 0;
 }
 EXPORT_SYMBOL_GPL(input_ff_event);
diff --git a/drivers/input/xen-kbdfront.c b/drivers/input/xen-kbdfront.c
index 0f47f4697cdf..9ce3b3baf3a2 100644
--- a/drivers/input/xen-kbdfront.c
+++ b/drivers/input/xen-kbdfront.c
@@ -66,6 +66,9 @@ static irqreturn_t input_handler(int rq, void *dev_id)
                 case XENKBD_TYPE_MOTION:
                         input_report_rel(dev, REL_X, event->motion.rel_x);
                         input_report_rel(dev, REL_Y, event->motion.rel_y);
+                        if (event->motion.rel_z)
+                                input_report_rel(dev, REL_WHEEL,
+                                                 -event->motion.rel_z);
                         break;
                 case XENKBD_TYPE_KEY:
                         dev = NULL;
@@ -84,6 +87,9 @@ static irqreturn_t input_handler(int rq, void *dev_id)
                 case XENKBD_TYPE_POS:
                         input_report_abs(dev, ABS_X, event->pos.abs_x);
                         input_report_abs(dev, ABS_Y, event->pos.abs_y);
+                        if (event->pos.rel_z)
+                                input_report_rel(dev, REL_WHEEL,
+                                                 -event->pos.rel_z);
                         break;
                 }
                 if (dev)
@@ -152,7 +158,7 @@ static int __devinit xenkbd_probe(struct xenbus_device *dev,
         ptr->evbit[0] = BIT(EV_KEY) | BIT(EV_REL) | BIT(EV_ABS);
         for (i = BTN_LEFT; i <= BTN_TASK; i++)
                 set_bit(i, ptr->keybit);
-        ptr->relbit[0] = BIT(REL_X) | BIT(REL_Y);
+        ptr->relbit[0] = BIT(REL_X) | BIT(REL_Y) | BIT(REL_WHEEL);
         input_set_abs_params(ptr, ABS_X, 0, XENFB_WIDTH, 0, 0);
         input_set_abs_params(ptr, ABS_Y, 0, XENFB_HEIGHT, 0, 0);
 
@@ -294,6 +300,16 @@ InitWait:
                  */
                 if (dev->state != XenbusStateConnected)
                         goto InitWait; /* no InitWait seen yet, fudge it */
+
+                /* Set input abs params to match backend screen res */
+                if (xenbus_scanf(XBT_NIL, info->xbdev->otherend,
+                                 "width", "%d", &val) > 0)
+                        input_set_abs_params(info->ptr, ABS_X, 0, val, 0, 0);
+
+                if (xenbus_scanf(XBT_NIL, info->xbdev->otherend,
+                                 "height", "%d", &val) > 0)
+                        input_set_abs_params(info->ptr, ABS_Y, 0, val, 0, 0);
+
                 break;
 
         case XenbusStateClosing:
@@ -337,4 +353,6 @@ static void __exit xenkbd_cleanup(void)
 module_init(xenkbd_init);
 module_exit(xenkbd_cleanup);
 
+MODULE_DESCRIPTION("Xen virtual keyboard/pointer device frontend");
 MODULE_LICENSE("GPL");
+MODULE_ALIAS("xen:vkbd");
diff --git a/drivers/lguest/lg.h b/drivers/lguest/lg.h
index 005bd045d2eb..5faefeaf6790 100644
--- a/drivers/lguest/lg.h
+++ b/drivers/lguest/lg.h
@@ -136,7 +136,6 @@ int run_guest(struct lg_cpu *cpu, unsigned long __user *user);
  * first step in the migration to the kernel types.  pte_pfn is already defined
  * in the kernel. */
 #define pgd_flags(x)    (pgd_val(x) & ~PAGE_MASK)
-#define pte_flags(x)    (pte_val(x) & ~PAGE_MASK)
 #define pgd_pfn(x)      (pgd_val(x) >> PAGE_SHIFT)
 
 /* interrupts_and_traps.c: */
diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index 835def11419d..ab6a61db63ce 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -432,6 +432,7 @@ static int crypt_convert(struct crypt_config *cc,
                 case 0:
                         atomic_dec(&ctx->pending);
                         ctx->sector++;
+                        cond_resched();
                         continue;
 
                 /* error */
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 7cf512a34ccf..2580ac1b9b0f 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -3897,8 +3897,10 @@ static void autorun_devices(int part)
 
                 md_probe(dev, NULL, NULL);
                 mddev = mddev_find(dev);
-                if (!mddev) {
-                        printk(KERN_ERR 
+                if (!mddev || !mddev->gendisk) {
+                        if (mddev)
+                                mddev_put(mddev);
+                        printk(KERN_ERR
                                 "md: cannot allocate memory for md drive.\n");
                         break;
                 }
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index 1de17da34a95..a71277b640ab 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -2137,6 +2137,8 @@ static int run(mddev_t *mddev)
                     !test_bit(In_sync, &disk->rdev->flags)) {
                         disk->head_position = 0;
                         mddev->degraded++;
+                        if (disk->rdev)
+                                conf->fullsync = 1;
                 }
         }
 
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index c37e256b1176..54c8ee28fcc4 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -2898,6 +2898,8 @@ static void handle_stripe5(struct stripe_head *sh)
 
                 for (i = conf->raid_disks; i--; ) {
                         set_bit(R5_Wantwrite, &sh->dev[i].flags);
+                        set_bit(R5_LOCKED, &dev->flags);
+                        s.locked++;
                         if (!test_and_set_bit(STRIPE_OP_IO, &sh->ops.pending))
                                 sh->ops.count++;
                 }
@@ -2911,6 +2913,7 @@ static void handle_stripe5(struct stripe_head *sh)
                         conf->raid_disks);
                 s.locked += handle_write_operations5(sh, 1, 1);
         } else if (s.expanded &&
+                   s.locked == 0 &&
                 !test_bit(STRIPE_OP_POSTXOR, &sh->ops.pending)) {
                 clear_bit(STRIPE_EXPAND_READY, &sh->state);
                 atomic_dec(&conf->reshape_stripes);
@@ -4305,7 +4308,9 @@ static int run(mddev_t *mddev)
                                 " disk %d\n", bdevname(rdev->bdev,b),
                                 raid_disk);
                         working_disks++;
-                }
+                } else
+                        /* Cannot rely on bitmap to complete recovery */
+                        conf->fullsync = 1;
         }
 
         /*
diff --git a/drivers/media/common/ir-keymaps.c b/drivers/media/common/ir-keymaps.c
index a3485817e46c..8fa91f846d59 100644
--- a/drivers/media/common/ir-keymaps.c
+++ b/drivers/media/common/ir-keymaps.c
@@ -2201,3 +2201,41 @@ IR_KEYTAB_TYPE ir_codes_powercolor_real_angel[IR_KEYTAB_SIZE] = {
         [0x25] = KEY_POWER,             /* power */
 };
 EXPORT_SYMBOL_GPL(ir_codes_powercolor_real_angel);
+
+IR_KEYTAB_TYPE ir_codes_avermedia_a16d[IR_KEYTAB_SIZE] = {
+        [0x20] = KEY_LIST,
+        [0x00] = KEY_POWER,
+        [0x28] = KEY_1,
+        [0x18] = KEY_2,
+        [0x38] = KEY_3,
+        [0x24] = KEY_4,
+        [0x14] = KEY_5,
+        [0x34] = KEY_6,
+        [0x2c] = KEY_7,
+        [0x1c] = KEY_8,
+        [0x3c] = KEY_9,
+        [0x12] = KEY_SUBTITLE,
+        [0x22] = KEY_0,
+        [0x32] = KEY_REWIND,
+        [0x3a] = KEY_SHUFFLE,
+        [0x02] = KEY_PRINT,
+        [0x11] = KEY_CHANNELDOWN,
+        [0x31] = KEY_CHANNELUP,
+        [0x0c] = KEY_ZOOM,
+        [0x1e] = KEY_VOLUMEDOWN,
+        [0x3e] = KEY_VOLUMEUP,
+        [0x0a] = KEY_MUTE,
+        [0x04] = KEY_AUDIO,
+        [0x26] = KEY_RECORD,
+        [0x06] = KEY_PLAY,
+        [0x36] = KEY_STOP,
+        [0x16] = KEY_PAUSE,
+        [0x2e] = KEY_REWIND,
+        [0x0e] = KEY_FASTFORWARD,
+        [0x30] = KEY_TEXT,
+        [0x21] = KEY_GREEN,
+        [0x01] = KEY_BLUE,
+        [0x08] = KEY_EPG,
+        [0x2a] = KEY_MENU,
+};
+EXPORT_SYMBOL_GPL(ir_codes_avermedia_a16d);
diff --git a/drivers/media/common/tuners/tda18271-common.c b/drivers/media/common/tuners/tda18271-common.c
index f1894fec32b9..6fb5b4586569 100644
--- a/drivers/media/common/tuners/tda18271-common.c
+++ b/drivers/media/common/tuners/tda18271-common.c
@@ -649,9 +649,17 @@ int tda18271_calc_rf_cal(struct dvb_frontend *fe, u32 *freq)
         u8 val;
 
         int ret = tda18271_lookup_map(fe, RF_CAL, freq, &val);
+        /* The TDA18271HD/C1 rf_cal map lookup is expected to go out of range
+         * for frequencies above 61.1 MHz.  In these cases, the internal RF
+         * tracking filters calibration mechanism is used.
+         *
+         * There is no need to warn the user about this.
+         */
+        if (ret < 0)
+                goto fail;
 
         regs[R_EB14] = val;
-
+fail:
         return ret;
 }
 
diff --git a/drivers/media/common/tuners/tda18271-fe.c b/drivers/media/common/tuners/tda18271-fe.c
index 89c01fb1f859..93063c6fbbf6 100644
--- a/drivers/media/common/tuners/tda18271-fe.c
+++ b/drivers/media/common/tuners/tda18271-fe.c
@@ -45,6 +45,21 @@ static inline int charge_pump_source(struct dvb_frontend *fe, int force)
                                            TDA18271_MAIN_PLL, force);
 }
 
+static inline void tda18271_set_if_notch(struct dvb_frontend *fe)
+{
+        struct tda18271_priv *priv = fe->tuner_priv;
+        unsigned char *regs = priv->tda18271_regs;
+
+        switch (priv->mode) {
+        case TDA18271_ANALOG:
+                regs[R_MPD]  &= ~0x80; /* IF notch = 0 */
+                break;
+        case TDA18271_DIGITAL:
+                regs[R_MPD]  |= 0x80; /* IF notch = 1 */
+                break;
+        }
+}
+
 static int tda18271_channel_configuration(struct dvb_frontend *fe,
                                           struct tda18271_std_map_item *map,
                                           u32 freq, u32 bw)
@@ -60,25 +75,18 @@ static int tda18271_channel_configuration(struct dvb_frontend *fe,
         regs[R_EP3]  &= ~0x1f; /* clear std bits */
         regs[R_EP3]  |= (map->agc_mode << 3) | map->std;
 
-        /* set rfagc to high speed mode */
-        regs[R_EP3] &= ~0x04;
+        if (priv->id == TDA18271HDC2) {
+                /* set rfagc to high speed mode */
+                regs[R_EP3] &= ~0x04;
+        }
 
         /* set cal mode to normal */
         regs[R_EP4]  &= ~0x03;
 
-        /* update IF output level & IF notch frequency */
+        /* update IF output level */
         regs[R_EP4]  &= ~0x1c; /* clear if level bits */
         regs[R_EP4]  |= (map->if_lvl << 2);
 
-        switch (priv->mode) {
-        case TDA18271_ANALOG:
-                regs[R_MPD]  &= ~0x80; /* IF notch = 0 */
-                break;
-        case TDA18271_DIGITAL:
-                regs[R_MPD]  |= 0x80; /* IF notch = 1 */
-                break;
-        }
-
         /* update FM_RFn */
         regs[R_EP4]  &= ~0x80;
         regs[R_EP4]  |= map->fm_rfn << 7;
@@ -95,6 +103,9 @@ static int tda18271_channel_configuration(struct dvb_frontend *fe,
         /* disable Power Level Indicator */
         regs[R_EP1]  |= 0x40;
 
+        /* make sure thermometer is off */
+        regs[R_TM]   &= ~0x10;
+
         /* frequency dependent parameters */
 
         tda18271_calc_ir_measure(fe, &freq);
@@ -135,6 +146,7 @@ static int tda18271_channel_configuration(struct dvb_frontend *fe,
         switch (priv->role) {
         case TDA18271_MASTER:
                 tda18271_calc_main_pll(fe, N);
+                tda18271_set_if_notch(fe);
                 tda18271_write_regs(fe, R_MPD, 4);
                 break;
         case TDA18271_SLAVE:
@@ -142,6 +154,7 @@ static int tda18271_channel_configuration(struct dvb_frontend *fe,
                 tda18271_write_regs(fe, R_CPD, 4);
 
                 regs[R_MPD] = regs[R_CPD] & 0x7f;
+                tda18271_set_if_notch(fe);
                 tda18271_write_regs(fe, R_MPD, 1);
                 break;
         }
@@ -160,12 +173,14 @@ static int tda18271_channel_configuration(struct dvb_frontend *fe,
 
         msleep(20);
 
-        /* set rfagc to normal speed mode */
-        if (map->fm_rfn)
-                regs[R_EP3] &= ~0x04;
-        else
-                regs[R_EP3] |= 0x04;
-        ret = tda18271_write_regs(fe, R_EP3, 1);
+        if (priv->id == TDA18271HDC2) {
+                /* set rfagc to normal speed mode */
+                if (map->fm_rfn)
+                        regs[R_EP3] &= ~0x04;
+                else
+                        regs[R_EP3] |= 0x04;
+                ret = tda18271_write_regs(fe, R_EP3, 1);
+        }
 fail:
         return ret;
 }
@@ -507,7 +522,7 @@ static int tda18271_powerscan_init(struct dvb_frontend *fe)
         /* set cal mode to normal */
         regs[R_EP4]  &= ~0x03;
 
-        /* update IF output level & IF notch frequency */
+        /* update IF output level */
         regs[R_EP4]  &= ~0x1c; /* clear if level bits */
 
         ret = tda18271_write_regs(fe, R_EP3, 2);
diff --git a/drivers/media/common/tuners/xc5000.c b/drivers/media/common/tuners/xc5000.c
index ceae6db901ec..7cf4f5bdb2ec 100644
--- a/drivers/media/common/tuners/xc5000.c
+++ b/drivers/media/common/tuners/xc5000.c
@@ -177,6 +177,7 @@ static XC_TV_STANDARD XC5000_Standard[MAX_TV_STANDARD] = {
         {"FM Radio-INPUT1",   0x0208, 0x9002}
 };
 
+static int  xc5000_is_firmware_loaded(struct dvb_frontend *fe);
 static int  xc5000_writeregs(struct xc5000_priv *priv, u8 *buf, u8 len);
 static int  xc5000_readregs(struct xc5000_priv *priv, u8 *buf, u8 len);
 static void xc5000_TunerReset(struct dvb_frontend *fe);
@@ -352,7 +353,7 @@ static int xc_SetTVStandard(struct xc5000_priv *priv,
 
 static int xc_shutdown(struct xc5000_priv *priv)
 {
-        return 0;
+        return XC_RESULT_SUCCESS;
         /* Fixme: cannot bring tuner back alive once shutdown
          *        without reloading the driver modules.
          *    return xc_write_reg(priv, XREG_POWER_DOWN, 0);
@@ -685,6 +686,25 @@ static int xc5000_set_params(struct dvb_frontend *fe,
         return 0;
 }
 
+static int xc5000_is_firmware_loaded(struct dvb_frontend *fe)
+{
+        struct xc5000_priv *priv = fe->tuner_priv;
+        int ret;
+        u16 id;
+
+        ret = xc5000_readreg(priv, XREG_PRODUCT_ID, &id);
+        if (ret == XC_RESULT_SUCCESS) {
+                if (id == XC_PRODUCT_ID_FW_NOT_LOADED)
+                        ret = XC_RESULT_RESET_FAILURE;
+                else
+                        ret = XC_RESULT_SUCCESS;
+        }
+
+        dprintk(1, "%s() returns %s id = 0x%x\n", __func__,
+                ret == XC_RESULT_SUCCESS ? "True" : "False", id);
+        return ret;
+}
+
 static int xc_load_fw_and_init_tuner(struct dvb_frontend *fe);
 
 static int xc5000_set_analog_params(struct dvb_frontend *fe,
@@ -693,7 +713,7 @@ static int xc5000_set_analog_params(struct dvb_frontend *fe,
         struct xc5000_priv *priv = fe->tuner_priv;
         int ret;
 
-        if(priv->fwloaded == 0)
+        if (xc5000_is_firmware_loaded(fe) != XC_RESULT_SUCCESS)
                 xc_load_fw_and_init_tuner(fe);
 
         dprintk(1, "%s() frequency=%d (in units of 62.5khz)\n",
@@ -808,11 +828,10 @@ static int xc_load_fw_and_init_tuner(struct dvb_frontend *fe)
         struct xc5000_priv *priv = fe->tuner_priv;
         int ret = 0;
 
-        if (priv->fwloaded == 0) {
+        if (xc5000_is_firmware_loaded(fe) != XC_RESULT_SUCCESS) {
                 ret = xc5000_fwupload(fe);
                 if (ret != XC_RESULT_SUCCESS)
                         return ret;
-                priv->fwloaded = 1;
         }
 
         /* Start the tuner self-calibration process */
@@ -852,7 +871,6 @@ static int xc5000_sleep(struct dvb_frontend *fe)
                 return -EREMOTEIO;
         }
         else {
-                /* priv->fwloaded = 0; */
                 return XC_RESULT_SUCCESS;
         }
 }
@@ -933,7 +951,6 @@ struct dvb_frontend *xc5000_attach(struct dvb_frontend *fe,
                         cfg->i2c_address);
                 printk(KERN_INFO
                         "xc5000: Firmware has been loaded previously\n");
-                priv->fwloaded = 1;
                 break;
         case XC_PRODUCT_ID_FW_NOT_LOADED:
                 printk(KERN_INFO
@@ -941,7 +958,6 @@ struct dvb_frontend *xc5000_attach(struct dvb_frontend *fe,
                         cfg->i2c_address);
                 printk(KERN_INFO
                         "xc5000: Firmware has not been loaded previously\n");
-                priv->fwloaded = 0;
                 break;
         default:
                 printk(KERN_ERR
diff --git a/drivers/media/common/tuners/xc5000_priv.h b/drivers/media/common/tuners/xc5000_priv.h
index ecebfe4745ad..a72a9887fe7f 100644
--- a/drivers/media/common/tuners/xc5000_priv.h
+++ b/drivers/media/common/tuners/xc5000_priv.h
@@ -30,7 +30,6 @@ struct xc5000_priv {
         u32 bandwidth;
         u8  video_standard;
         u8  rf_mode;
-        u8  fwloaded;
 
         void *devptr;
 };
diff --git a/drivers/media/dvb/dvb-usb/gl861.c b/drivers/media/dvb/dvb-usb/gl861.c
index 0a8ac64a4e33..037f7ffb47b2 100644
--- a/drivers/media/dvb/dvb-usb/gl861.c
+++ b/drivers/media/dvb/dvb-usb/gl861.c
@@ -47,6 +47,8 @@ static int gl861_i2c_msg(struct dvb_usb_device *d, u8 addr,
                 return -EINVAL;
         }
 
+        msleep(1); /* avoid I2C errors */
+
         return usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev, 0), req, type,
                                value, index, rbuf, rlen, 2000);
 }
@@ -92,16 +94,6 @@ static struct i2c_algorithm gl861_i2c_algo = {
 };
 
 /* Callbacks for DVB USB */
-static int gl861_identify_state(struct usb_device *udev,
-                                struct dvb_usb_device_properties *props,
-                                struct dvb_usb_device_description **desc,
-                                int *cold)
-{
-        *cold = 0;
-
-        return 0;
-}
-
 static struct zl10353_config gl861_zl10353_config = {
         .demod_address = 0x0f,
         .no_tuner = 1,
@@ -172,7 +164,6 @@ static struct dvb_usb_device_properties gl861_properties = {
 
         .size_of_priv     = 0,
 
-        .identify_state   = gl861_identify_state,
         .num_adapters = 1,
         .adapter = {{
 
@@ -194,13 +185,15 @@ static struct dvb_usb_device_properties gl861_properties = {
 
         .num_device_descs = 2,
         .devices = {
-                {   "MSI Mega Sky 55801 DVB-T USB2.0",
-                        { &gl861_table[0], NULL },
-                        { NULL },
+                {
+                        .name = "MSI Mega Sky 55801 DVB-T USB2.0",
+                        .cold_ids = { NULL },
+                        .warm_ids = { &gl861_table[0], NULL },
                 },
-                {   "A-LINK DTU DVB-T USB2.0",
-                        { &gl861_table[1], NULL },
-                        { NULL },
+                {
+                        .name = "A-LINK DTU DVB-T USB2.0",
+                        .cold_ids = { NULL },
+                        .warm_ids = { &gl861_table[1], NULL },
                 },
         }
 };
diff --git a/drivers/media/dvb/dvb-usb/umt-010.c b/drivers/media/dvb/dvb-usb/umt-010.c
index 9e7653bb3b66..118aab1a3e54 100644
--- a/drivers/media/dvb/dvb-usb/umt-010.c
+++ b/drivers/media/dvb/dvb-usb/umt-010.c
@@ -107,7 +107,7 @@ static struct dvb_usb_device_properties umt_properties = {
                         /* parameter for the MPEG2-data transfer */
                         .stream = {
                                 .type = USB_BULK,
-                                .count = 20,
+                                .count = MAX_NO_URBS_FOR_DATA_STREAM,
                                 .endpoint = 0x06,
                                 .u = {
                                         .bulk = {
diff --git a/drivers/media/dvb/frontends/au8522.c b/drivers/media/dvb/frontends/au8522.c
index 084a280c2d7f..03900d241a76 100644
--- a/drivers/media/dvb/frontends/au8522.c
+++ b/drivers/media/dvb/frontends/au8522.c
@@ -463,10 +463,13 @@ static int au8522_set_frontend(struct dvb_frontend *fe,
                                struct dvb_frontend_parameters *p)
 {
         struct au8522_state *state = fe->demodulator_priv;
+        int ret = -EINVAL;
 
         dprintk("%s(frequency=%d)\n", __func__, p->frequency);
 
-        state->current_frequency = p->frequency;
+        if ((state->current_frequency == p->frequency) &&
+            (state->current_modulation == p->u.vsb.modulation))
+                return 0;
 
         au8522_enable_modulation(fe, p->u.vsb.modulation);
 
@@ -476,11 +479,16 @@ static int au8522_set_frontend(struct dvb_frontend *fe,
         if (fe->ops.tuner_ops.set_params) {
                 if (fe->ops.i2c_gate_ctrl)
                         fe->ops.i2c_gate_ctrl(fe, 1);
-                fe->ops.tuner_ops.set_params(fe, p);
+                ret = fe->ops.tuner_ops.set_params(fe, p);
                 if (fe->ops.i2c_gate_ctrl)
                         fe->ops.i2c_gate_ctrl(fe, 0);
         }
 
+        if (ret < 0)
+                return ret;
+
+        state->current_frequency = p->frequency;
+
         return 0;
 }
 
@@ -498,6 +506,16 @@ static int au8522_init(struct dvb_frontend *fe)
         return 0;
 }
 
+static int au8522_sleep(struct dvb_frontend *fe)
+{
+        struct au8522_state *state = fe->demodulator_priv;
+        dprintk("%s()\n", __func__);
+
+        state->current_frequency = 0;
+
+        return 0;
+}
+
 static int au8522_read_status(struct dvb_frontend *fe, fe_status_t *status)
 {
         struct au8522_state *state = fe->demodulator_priv;
@@ -509,10 +527,8 @@ static int au8522_read_status(struct dvb_frontend *fe, fe_status_t *status)
         if (state->current_modulation == VSB_8) {
                 dprintk("%s() Checking VSB_8\n", __func__);
                 reg = au8522_readreg(state, 0x4088);
-                if (reg & 0x01)
-                        *status |= FE_HAS_VITERBI;
-                if (reg & 0x02)
-                        *status |= FE_HAS_LOCK | FE_HAS_SYNC;
+                if ((reg & 0x03) == 0x03)
+                        *status |= FE_HAS_LOCK | FE_HAS_SYNC | FE_HAS_VITERBI;
         } else {
                 dprintk("%s() Checking QAM\n", __func__);
                 reg = au8522_readreg(state, 0x4541);
@@ -672,6 +688,7 @@ static struct dvb_frontend_ops au8522_ops = {
         },
 
         .init                 = au8522_init,
+        .sleep                = au8522_sleep,
         .i2c_gate_ctrl        = au8522_i2c_gate_ctrl,
         .set_frontend         = au8522_set_frontend,
         .get_frontend         = au8522_get_frontend,
diff --git a/drivers/media/dvb/frontends/stv0299.c b/drivers/media/dvb/frontends/stv0299.c
index 17556183e871..35435bef8e79 100644
--- a/drivers/media/dvb/frontends/stv0299.c
+++ b/drivers/media/dvb/frontends/stv0299.c
@@ -63,6 +63,7 @@ struct stv0299_state {
         u32 symbol_rate;
         fe_code_rate_t fec_inner;
         int errmode;
+        u32 ucblocks;
 };
 
 #define STATUS_BER 0
@@ -501,8 +502,10 @@ static int stv0299_read_ber(struct dvb_frontend* fe, u32* ber)
 {
         struct stv0299_state* state = fe->demodulator_priv;
 
-        if (state->errmode != STATUS_BER) return 0;
-        *ber = (stv0299_readreg (state, 0x1d) << 8) | stv0299_readreg (state, 0x1e);
+        if (state->errmode != STATUS_BER)
+                return -ENOSYS;
+
+        *ber = stv0299_readreg(state, 0x1e) | (stv0299_readreg(state, 0x1d) << 8);
 
         return 0;
 }
@@ -540,8 +543,12 @@ static int stv0299_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
 {
         struct stv0299_state* state = fe->demodulator_priv;
 
-        if (state->errmode != STATUS_UCBLOCKS) *ucblocks = 0;
-        else *ucblocks = (stv0299_readreg (state, 0x1d) << 8) | stv0299_readreg (state, 0x1e);
+        if (state->errmode != STATUS_UCBLOCKS)
+                return -ENOSYS;
+
+        state->ucblocks += stv0299_readreg(state, 0x1e);
+        state->ucblocks += (stv0299_readreg(state, 0x1d) << 8);
+        *ucblocks = state->ucblocks;
 
         return 0;
 }
diff --git a/drivers/media/dvb/frontends/tda10023.c b/drivers/media/dvb/frontends/tda10023.c
index 0727b80bc4d2..c6ff5b82ff80 100644
--- a/drivers/media/dvb/frontends/tda10023.c
+++ b/drivers/media/dvb/frontends/tda10023.c
@@ -116,9 +116,12 @@ static u8 tda10023_readreg (struct tda10023_state* state, u8 reg)
         int ret;
 
         ret = i2c_transfer (state->i2c, msg, 2);
-        if (ret != 2)
-                printk("DVB: TDA10023: %s: readreg error (ret == %i)\n",
-                                 __func__, ret);
+        if (ret != 2) {
+                int num = state->frontend.dvb ? state->frontend.dvb->num : -1;
+                printk(KERN_ERR "DVB: TDA10023(%d): %s: readreg error "
+                        "(reg == 0x%02x, ret == %i)\n",
+                        num, __func__, reg, ret);
+        }
         return b1[0];
 }
 
@@ -129,11 +132,12 @@ static int tda10023_writereg (struct tda10023_state* state, u8 reg, u8 data)
         int ret;
 
         ret = i2c_transfer (state->i2c, &msg, 1);
-        if (ret != 1)
-                printk("DVB: TDA10023(%d): %s, writereg error "
+        if (ret != 1) {
+                int num = state->frontend.dvb ? state->frontend.dvb->num : -1;
+                printk(KERN_ERR "DVB: TDA10023(%d): %s, writereg error "
                         "(reg == 0x%02x, val == 0x%02x, ret == %i)\n",
-                        state->frontend.dvb->num, __func__, reg, data, ret);
-
+                        num, __func__, reg, data, ret);
+        }
         return (ret != 1) ? -EREMOTEIO : 0;
 }
 
@@ -464,7 +468,7 @@ struct dvb_frontend* tda10023_attach(const struct tda1002x_config* config,
         int i;
 
         /* allocate memory for the internal state */
-        state = kmalloc(sizeof(struct tda10023_state), GFP_KERNEL);
+        state = kzalloc(sizeof(struct tda10023_state), GFP_KERNEL);
         if (state == NULL) goto error;
 
         /* setup the state */
diff --git a/drivers/media/dvb/frontends/tda1004x.c b/drivers/media/dvb/frontends/tda1004x.c
index 49973846373e..a0d638653567 100644
--- a/drivers/media/dvb/frontends/tda1004x.c
+++ b/drivers/media/dvb/frontends/tda1004x.c
@@ -1248,11 +1248,14 @@ struct dvb_frontend* tda10045_attach(const struct tda1004x_config* config,
                                      struct i2c_adapter* i2c)
 {
         struct tda1004x_state *state;
+        int id;
 
         /* allocate memory for the internal state */
         state = kmalloc(sizeof(struct tda1004x_state), GFP_KERNEL);
-        if (!state)
+        if (!state) {
+                printk(KERN_ERR "Can't alocate memory for tda10045 state\n");
                 return NULL;
+        }
 
         /* setup the state */
         state->config = config;
@@ -1260,7 +1263,15 @@ struct dvb_frontend* tda10045_attach(const struct tda1004x_config* config,
         state->demod_type = TDA1004X_DEMOD_TDA10045;
 
         /* check if the demod is there */
-        if (tda1004x_read_byte(state, TDA1004X_CHIPID) != 0x25) {
+        id = tda1004x_read_byte(state, TDA1004X_CHIPID);
+        if (id < 0) {
+                printk(KERN_ERR "tda10045: chip is not answering. Giving up.\n");
+                kfree(state);
+                return NULL;
+        }
+
+        if (id != 0x25) {
+                printk(KERN_ERR "Invalid tda1004x ID = 0x%02x. Can't proceed\n", id);
                 kfree(state);
                 return NULL;
         }
@@ -1307,11 +1318,14 @@ struct dvb_frontend* tda10046_attach(const struct tda1004x_config* config,
                                      struct i2c_adapter* i2c)
 {
         struct tda1004x_state *state;
+        int id;
 
         /* allocate memory for the internal state */
         state = kmalloc(sizeof(struct tda1004x_state), GFP_KERNEL);
-        if (!state)
+        if (!state) {
+                printk(KERN_ERR "Can't alocate memory for tda10046 state\n");
                 return NULL;
+        }
 
         /* setup the state */
         state->config = config;
@@ -1319,7 +1333,14 @@ struct dvb_frontend* tda10046_attach(const struct tda1004x_config* config,
         state->demod_type = TDA1004X_DEMOD_TDA10046;
 
         /* check if the demod is there */
-        if (tda1004x_read_byte(state, TDA1004X_CHIPID) != 0x46) {
+        id = tda1004x_read_byte(state, TDA1004X_CHIPID);
+        if (id < 0) {
+                printk(KERN_ERR "tda10046: chip is not answering. Giving up.\n");
+                kfree(state);
+                return NULL;
+        }
+        if (id != 0x46) {
+                printk(KERN_ERR "Invalid tda1004x ID = 0x%02x. Can't proceed\n", id);
                 kfree(state);
                 return NULL;
         }
diff --git a/drivers/media/dvb/ttpci/Kconfig b/drivers/media/dvb/ttpci/Kconfig
index d4339b1b3b68..07643e010093 100644
--- a/drivers/media/dvb/ttpci/Kconfig
+++ b/drivers/media/dvb/ttpci/Kconfig
@@ -101,6 +101,7 @@ config DVB_BUDGET
 config DVB_BUDGET_CI
         tristate "Budget cards with onboard CI connector"
         depends on DVB_BUDGET_CORE && I2C
+        depends on INPUT # due to IR
         select DVB_STV0297 if !DVB_FE_CUSTOMISE
         select DVB_STV0299 if !DVB_FE_CUSTOMISE
         select DVB_TDA1004X if !DVB_FE_CUSTOMISE
diff --git a/drivers/media/dvb/ttpci/av7110_hw.c b/drivers/media/dvb/ttpci/av7110_hw.c
index 9d81074b31df..3a3f5279e927 100644
--- a/drivers/media/dvb/ttpci/av7110_hw.c
+++ b/drivers/media/dvb/ttpci/av7110_hw.c
@@ -427,6 +427,7 @@ static int __av7110_send_fw_cmd(struct av7110 *av7110, u16* buf, int length)
                         if (err) {
                                 printk(KERN_ERR "%s: timeout waiting on busy %s QUEUE\n",
                                         __func__, type);
+                                av7110->arm_errors++;
                                 return -ETIMEDOUT;
                         }
                         msleep(1);
@@ -853,10 +854,8 @@ static osd_raw_window_t bpp2bit[8] = {
 
 static inline int WaitUntilBmpLoaded(struct av7110 *av7110)
 {
-        int ret = wait_event_interruptible_timeout(av7110->bmpq,
+        int ret = wait_event_timeout(av7110->bmpq,
                                 av7110->bmp_state != BMP_LOADING, 10*HZ);
-        if (ret == -ERESTARTSYS)
-                return ret;
         if (ret == 0) {
                 printk("dvb-ttpci: warning: timeout waiting in LoadBitmap: %d, %d\n",
                        ret, av7110->bmp_state);
diff --git a/drivers/media/video/Kconfig b/drivers/media/video/Kconfig
index 3b26fbd3e558..5ccb0aeca8cc 100644
--- a/drivers/media/video/Kconfig
+++ b/drivers/media/video/Kconfig
@@ -793,6 +793,14 @@ menuconfig V4L_USB_DRIVERS
 
 if V4L_USB_DRIVERS && USB
 
+config USB_VIDEO_CLASS
+        tristate "USB Video Class (UVC)"
+        ---help---
+          Support for the USB Video Class (UVC).  Currently only video
+          input devices, such as webcams, are supported.
+
+          For more information see: <http://linux-uvc.berlios.de/>
+
 source "drivers/media/video/pvrusb2/Kconfig"
 
 source "drivers/media/video/em28xx/Kconfig"
diff --git a/drivers/media/video/Makefile b/drivers/media/video/Makefile
index dff0d6abe917..ecbbfaab24d5 100644
--- a/drivers/media/video/Makefile
+++ b/drivers/media/video/Makefile
@@ -136,6 +136,8 @@ obj-$(CONFIG_SOC_CAMERA_MT9V022)	+= mt9v022.o
 
 obj-$(CONFIG_VIDEO_AU0828) += au0828/
 
+obj-$(CONFIG_USB_VIDEO_CLASS)   += uvc/
+
 EXTRA_CFLAGS += -Idrivers/media/dvb/dvb-core
 EXTRA_CFLAGS += -Idrivers/media/dvb/frontends
 EXTRA_CFLAGS += -Idrivers/media/common/tuners
diff --git a/drivers/media/video/au0828/au0828-cards.c b/drivers/media/video/au0828/au0828-cards.c
index a2a6983444fa..898e12395e7c 100644
--- a/drivers/media/video/au0828/au0828-cards.c
+++ b/drivers/media/video/au0828/au0828-cards.c
@@ -77,8 +77,14 @@ static void hauppauge_eeprom(struct au0828_dev *dev, u8 *eeprom_data)
 
         /* Make sure we support the board model */
         switch (tv.model) {
+        case 72000: /* WinTV-HVR950q (Retail, IR, ATSC/QAM */
         case 72001: /* WinTV-HVR950q (Retail, IR, ATSC/QAM and basic analog video */
+        case 72211: /* WinTV-HVR950q (OEM, IR, ATSC/QAM and basic analog video */
+        case 72221: /* WinTV-HVR950q (OEM, IR, ATSC/QAM and basic analog video */
+        case 72231: /* WinTV-HVR950q (OEM, IR, ATSC/QAM and basic analog video */
+        case 72241: /* WinTV-HVR950q (OEM, No IR, ATSC/QAM and basic analog video */
         case 72301: /* WinTV-HVR850 (Retail, IR, ATSC and basic analog video */
+        case 72500: /* WinTV-HVR950q (OEM, No IR, ATSC/QAM */
                 break;
         default:
                 printk(KERN_WARNING "%s: warning: "
@@ -175,6 +181,18 @@ struct usb_device_id au0828_usb_id_table [] = {
                 .driver_info = AU0828_BOARD_HAUPPAUGE_HVR850 },
         { USB_DEVICE(0x0fe9, 0xd620),
                 .driver_info = AU0828_BOARD_DVICO_FUSIONHDTV7 },
+        { USB_DEVICE(0x2040, 0x7210),
+                .driver_info = AU0828_BOARD_HAUPPAUGE_HVR950Q },
+        { USB_DEVICE(0x2040, 0x7217),
+                .driver_info = AU0828_BOARD_HAUPPAUGE_HVR950Q },
+        { USB_DEVICE(0x2040, 0x721b),
+                .driver_info = AU0828_BOARD_HAUPPAUGE_HVR950Q },
+        { USB_DEVICE(0x2040, 0x721f),
+                .driver_info = AU0828_BOARD_HAUPPAUGE_HVR950Q },
+        { USB_DEVICE(0x2040, 0x7280),
+                .driver_info = AU0828_BOARD_HAUPPAUGE_HVR950Q },
+        { USB_DEVICE(0x0fd9, 0x0008),
+                .driver_info = AU0828_BOARD_HAUPPAUGE_HVR950Q },
         { },
 };
 
diff --git a/drivers/media/video/cx18/Kconfig b/drivers/media/video/cx18/Kconfig
index 5f942690570c..9aefdc5ea79a 100644
--- a/drivers/media/video/cx18/Kconfig
+++ b/drivers/media/video/cx18/Kconfig
@@ -10,8 +10,8 @@ config VIDEO_CX18
         select VIDEO_TVEEPROM
         select VIDEO_CX2341X
         select VIDEO_CS5345
-        select DVB_S5H1409
-        select MEDIA_TUNER_MXL5005S
+        select DVB_S5H1409 if !DVB_FE_CUSTOMISE
+        select MEDIA_TUNER_MXL5005S if !DVB_FE_CUSTOMISE
         ---help---
           This is a video4linux driver for Conexant cx23418 based
           PCI combo video recorder devices.
diff --git a/drivers/media/video/cx18/cx18-av-core.c b/drivers/media/video/cx18/cx18-av-core.c
index 9a26751615c6..faca43eb940f 100644
--- a/drivers/media/video/cx18/cx18-av-core.c
+++ b/drivers/media/video/cx18/cx18-av-core.c
@@ -69,6 +69,58 @@ int cx18_av_and_or4(struct cx18 *cx, u16 addr, u32 and_mask,
                              or_value);
 }
 
+int cx18_av_write_no_acfg(struct cx18 *cx, u16 addr, u8 value, int no_acfg_mask)
+{
+        int retval;
+        u32 saved_reg[8] = {0};
+
+        if (no_acfg_mask & CXADEC_NO_ACFG_AFE) {
+                saved_reg[0] = cx18_av_read4(cx, CXADEC_CHIP_CTRL);
+                saved_reg[1] = cx18_av_read4(cx, CXADEC_AFE_CTRL);
+        }
+
+        if (no_acfg_mask & CXADEC_NO_ACFG_PLL) {
+                saved_reg[2] = cx18_av_read4(cx, CXADEC_PLL_CTRL1);
+                saved_reg[3] = cx18_av_read4(cx, CXADEC_VID_PLL_FRAC);
+        }
+
+        if (no_acfg_mask & CXADEC_NO_ACFG_VID) {
+                saved_reg[4] = cx18_av_read4(cx, CXADEC_HORIZ_TIM_CTRL);
+                saved_reg[5] = cx18_av_read4(cx, CXADEC_VERT_TIM_CTRL);
+                saved_reg[6] = cx18_av_read4(cx, CXADEC_SRC_COMB_CFG);
+                saved_reg[7] = cx18_av_read4(cx, CXADEC_CHROMA_VBIOFF_CFG);
+        }
+
+        retval = cx18_av_write(cx, addr, value);
+
+        if (no_acfg_mask & CXADEC_NO_ACFG_AFE) {
+                cx18_av_write4(cx, CXADEC_CHIP_CTRL, saved_reg[0]);
+                cx18_av_write4(cx, CXADEC_AFE_CTRL,  saved_reg[1]);
+        }
+
+        if (no_acfg_mask & CXADEC_NO_ACFG_PLL) {
+                cx18_av_write4(cx, CXADEC_PLL_CTRL1,    saved_reg[2]);
+                cx18_av_write4(cx, CXADEC_VID_PLL_FRAC, saved_reg[3]);
+        }
+
+        if (no_acfg_mask & CXADEC_NO_ACFG_VID) {
+                cx18_av_write4(cx, CXADEC_HORIZ_TIM_CTRL,    saved_reg[4]);
+                cx18_av_write4(cx, CXADEC_VERT_TIM_CTRL,     saved_reg[5]);
+                cx18_av_write4(cx, CXADEC_SRC_COMB_CFG,      saved_reg[6]);
+                cx18_av_write4(cx, CXADEC_CHROMA_VBIOFF_CFG, saved_reg[7]);
+        }
+
+        return retval;
+}
+
+int cx18_av_and_or_no_acfg(struct cx18 *cx, u16 addr, unsigned and_mask,
+                           u8 or_value, int no_acfg_mask)
+{
+        return cx18_av_write_no_acfg(cx, addr,
+                                     (cx18_av_read(cx, addr) & and_mask) |
+                                     or_value, no_acfg_mask);
+}
+
 /* ----------------------------------------------------------------------- */
 
 static int set_input(struct cx18 *cx, enum cx18_av_video_input vid_input,
@@ -170,13 +222,15 @@ static void input_change(struct cx18 *cx)
 
         /* Follow step 8c and 8d of section 3.16 in the cx18_av datasheet */
         if (std & V4L2_STD_SECAM)
-                cx18_av_write(cx, 0x402, 0);
+                cx18_av_write_no_acfg(cx, 0x402, 0, CXADEC_NO_ACFG_ALL);
         else {
-                cx18_av_write(cx, 0x402, 0x04);
+                cx18_av_write_no_acfg(cx, 0x402, 0x04, CXADEC_NO_ACFG_ALL);
                 cx18_av_write(cx, 0x49f, (std & V4L2_STD_NTSC) ? 0x14 : 0x11);
         }
-        cx18_av_and_or(cx, 0x401, ~0x60, 0);
-        cx18_av_and_or(cx, 0x401, ~0x60, 0x60);
+        cx18_av_and_or_no_acfg(cx, 0x401, ~0x60, 0,
+                                CXADEC_NO_ACFG_PLL | CXADEC_NO_ACFG_VID);
+        cx18_av_and_or_no_acfg(cx, 0x401, ~0x60, 0x60,
+                                CXADEC_NO_ACFG_PLL | CXADEC_NO_ACFG_VID);
 
         if (std & V4L2_STD_525_60) {
                 if (std == V4L2_STD_NTSC_M_JP) {
@@ -228,7 +282,7 @@ static int set_input(struct cx18 *cx, enum cx18_av_video_input vid_input,
 
                 if ((vid_input & ~0xff0) ||
                     luma < CX18_AV_SVIDEO_LUMA1 ||
-                    luma > CX18_AV_SVIDEO_LUMA4 ||
+                    luma > CX18_AV_SVIDEO_LUMA8 ||
                     chroma < CX18_AV_SVIDEO_CHROMA4 ||
                     chroma > CX18_AV_SVIDEO_CHROMA8) {
                         CX18_ERR("0x%04x is not a valid video input!\n",
@@ -262,7 +316,8 @@ static int set_input(struct cx18 *cx, enum cx18_av_video_input vid_input,
 
         cx18_av_write(cx, 0x103, reg);
         /* Set INPUT_MODE to Composite (0) or S-Video (1) */
-        cx18_av_and_or(cx, 0x401, ~0x6, is_composite ? 0 : 0x02);
+        cx18_av_and_or_no_acfg(cx, 0x401, ~0x6, is_composite ? 0 : 0x02,
+                                CXADEC_NO_ACFG_PLL | CXADEC_NO_ACFG_VID);
         /* Set CH_SEL_ADC2 to 1 if input comes from CH3 */
         cx18_av_and_or(cx, 0x102, ~0x2, (reg & 0x80) == 0 ? 2 : 0);
         /* Set DUAL_MODE_ADC2 to 1 if input comes from both CH2 and CH3 */
@@ -318,12 +373,12 @@ static int set_v4lstd(struct cx18 *cx)
            This happens for example with the Yuan MPC622. */
         if (fmt >= 4 && fmt < 8) {
                 /* Set format to NTSC-M */
-                cx18_av_and_or(cx, 0x400, ~0xf, 1);
+                cx18_av_and_or_no_acfg(cx, 0x400, ~0xf, 1, CXADEC_NO_ACFG_AFE);
                 /* Turn off LCOMB */
                 cx18_av_and_or(cx, 0x47b, ~6, 0);
         }
-        cx18_av_and_or(cx, 0x400, ~0xf, fmt);
-        cx18_av_and_or(cx, 0x403, ~0x3, pal_m);
+        cx18_av_and_or_no_acfg(cx, 0x400, ~0xf, fmt, CXADEC_NO_ACFG_AFE);
+        cx18_av_and_or_no_acfg(cx, 0x403, ~0x3, pal_m, CXADEC_NO_ACFG_ALL);
         cx18_av_vbi_setup(cx);
         input_change(cx);
         return 0;
diff --git a/drivers/media/video/cx18/cx18-av-core.h b/drivers/media/video/cx18/cx18-av-core.h
index 786901d72e9a..c172823ce1d8 100644
--- a/drivers/media/video/cx18/cx18-av-core.h
+++ b/drivers/media/video/cx18/cx18-av-core.h
@@ -37,12 +37,16 @@ enum cx18_av_video_input {
         CX18_AV_COMPOSITE7,
         CX18_AV_COMPOSITE8,
 
-        /* S-Video inputs consist of one luma input (In1-In4) ORed with one
+        /* S-Video inputs consist of one luma input (In1-In8) ORed with one
            chroma input (In5-In8) */
         CX18_AV_SVIDEO_LUMA1 = 0x10,
         CX18_AV_SVIDEO_LUMA2 = 0x20,
         CX18_AV_SVIDEO_LUMA3 = 0x30,
         CX18_AV_SVIDEO_LUMA4 = 0x40,
+        CX18_AV_SVIDEO_LUMA5 = 0x50,
+        CX18_AV_SVIDEO_LUMA6 = 0x60,
+        CX18_AV_SVIDEO_LUMA7 = 0x70,
+        CX18_AV_SVIDEO_LUMA8 = 0x80,
         CX18_AV_SVIDEO_CHROMA4 = 0x400,
         CX18_AV_SVIDEO_CHROMA5 = 0x500,
         CX18_AV_SVIDEO_CHROMA6 = 0x600,
@@ -291,14 +295,24 @@ struct cx18_av_state {
 #define CXADEC_SELECT_AUDIO_STANDARD_FM    0xF9  /* FM radio */
 #define CXADEC_SELECT_AUDIO_STANDARD_AUTO  0xFF  /* Auto detect */
 
+/* Flags on what to preserve on write to 0x400-0x403 with cx18_av_.*_no_acfg()*/
+#define CXADEC_NO_ACFG_AFE      0x01 /* Preserve 0x100-0x107 */
+#define CXADEC_NO_ACFG_PLL      0x02 /* Preserve 0x108-0x10f */
+#define CXADEC_NO_ACFG_VID      0x04 /* Preserve 0x470-0x47f */
+#define CXADEC_NO_ACFG_ALL      0x07
+
 /* ----------------------------------------------------------------------- */
 /* cx18_av-core.c                                                          */
 int cx18_av_write(struct cx18 *cx, u16 addr, u8 value);
 int cx18_av_write4(struct cx18 *cx, u16 addr, u32 value);
+int cx18_av_write_no_acfg(struct cx18 *cx, u16 addr, u8 value,
+                                int no_acfg_mask);
 u8 cx18_av_read(struct cx18 *cx, u16 addr);
 u32 cx18_av_read4(struct cx18 *cx, u16 addr);
 int cx18_av_and_or(struct cx18 *cx, u16 addr, unsigned mask, u8 value);
 int cx18_av_and_or4(struct cx18 *cx, u16 addr, u32 mask, u32 value);
+int cx18_av_and_or_no_acfg(struct cx18 *cx, u16 addr, unsigned mask, u8 value,
+                                int no_acfg_mask);
 int cx18_av_cmd(struct cx18 *cx, unsigned int cmd, void *arg);
 
 /* ----------------------------------------------------------------------- */
diff --git a/drivers/media/video/cx18/cx18-cards.c b/drivers/media/video/cx18/cx18-cards.c
index baccd079243d..c26e0ef5b075 100644
--- a/drivers/media/video/cx18/cx18-cards.c
+++ b/drivers/media/video/cx18/cx18-cards.c
@@ -23,6 +23,7 @@
 
 #include "cx18-driver.h"
 #include "cx18-cards.h"
+#include "cx18-av-core.h"
 #include "cx18-i2c.h"
 #include <media/cs5345.h>
 
@@ -54,22 +55,22 @@ static const struct cx18_card cx18_card_hvr1600_esmt = {
         .hw_all = CX18_HW_TVEEPROM | CX18_HW_TUNER |
                   CX18_HW_CS5345 | CX18_HW_DVB,
         .video_inputs = {
-                { CX18_CARD_INPUT_VID_TUNER,  0, CX23418_COMPOSITE7 },
-                { CX18_CARD_INPUT_SVIDEO1,    1, CX23418_SVIDEO1    },
-                { CX18_CARD_INPUT_COMPOSITE1, 1, CX23418_COMPOSITE3 },
-                { CX18_CARD_INPUT_SVIDEO2,    2, CX23418_SVIDEO2    },
-                { CX18_CARD_INPUT_COMPOSITE2, 2, CX23418_COMPOSITE4 },
+                { CX18_CARD_INPUT_VID_TUNER,  0, CX18_AV_COMPOSITE7 },
+                { CX18_CARD_INPUT_SVIDEO1,    1, CX18_AV_SVIDEO1    },
+                { CX18_CARD_INPUT_COMPOSITE1, 1, CX18_AV_COMPOSITE3 },
+                { CX18_CARD_INPUT_SVIDEO2,    2, CX18_AV_SVIDEO2    },
+                { CX18_CARD_INPUT_COMPOSITE2, 2, CX18_AV_COMPOSITE4 },
         },
         .audio_inputs = {
                 { CX18_CARD_INPUT_AUD_TUNER,
-                  CX23418_AUDIO8, CS5345_IN_1 | CS5345_MCLK_1_5 },
+                  CX18_AV_AUDIO8, CS5345_IN_1 | CS5345_MCLK_1_5 },
                 { CX18_CARD_INPUT_LINE_IN1,
-                  CX23418_AUDIO_SERIAL, CS5345_IN_2 },
+                  CX18_AV_AUDIO_SERIAL, CS5345_IN_2 },
                 { CX18_CARD_INPUT_LINE_IN2,
-                  CX23418_AUDIO_SERIAL, CS5345_IN_2 },
+                  CX18_AV_AUDIO_SERIAL, CS5345_IN_3 },
         },
         .radio_input = { CX18_CARD_INPUT_AUD_TUNER,
-                         CX23418_AUDIO_SERIAL, 0 },
+                         CX18_AV_AUDIO_SERIAL, CS5345_IN_4 },
         .ddr = {
                 /* ESMT M13S128324A-5B memory */
                 .chip_config = 0x003,
@@ -81,6 +82,11 @@ static const struct cx18_card cx18_card_hvr1600_esmt = {
         },
         .gpio_init.initial_value = 0x3001,
         .gpio_init.direction = 0x3001,
+        .gpio_i2c_slave_reset = {
+                .active_lo_mask = 0x3001,
+                .msecs_asserted = 10,
+                .msecs_recovery = 40,
+        },
         .i2c = &cx18_i2c_std,
 };
 
@@ -94,22 +100,22 @@ static const struct cx18_card cx18_card_hvr1600_samsung = {
         .hw_all = CX18_HW_TVEEPROM | CX18_HW_TUNER |
                   CX18_HW_CS5345 | CX18_HW_DVB,
         .video_inputs = {
-                { CX18_CARD_INPUT_VID_TUNER,  0, CX23418_COMPOSITE7 },
-                { CX18_CARD_INPUT_SVIDEO1,    1, CX23418_SVIDEO1    },
-                { CX18_CARD_INPUT_COMPOSITE1, 1, CX23418_COMPOSITE3 },
-                { CX18_CARD_INPUT_SVIDEO2,    2, CX23418_SVIDEO2    },
-                { CX18_CARD_INPUT_COMPOSITE2, 2, CX23418_COMPOSITE4 },
+                { CX18_CARD_INPUT_VID_TUNER,  0, CX18_AV_COMPOSITE7 },
+                { CX18_CARD_INPUT_SVIDEO1,    1, CX18_AV_SVIDEO1    },
+                { CX18_CARD_INPUT_COMPOSITE1, 1, CX18_AV_COMPOSITE3 },
+                { CX18_CARD_INPUT_SVIDEO2,    2, CX18_AV_SVIDEO2    },
+                { CX18_CARD_INPUT_COMPOSITE2, 2, CX18_AV_COMPOSITE4 },
         },
         .audio_inputs = {
                 { CX18_CARD_INPUT_AUD_TUNER,
-                  CX23418_AUDIO8, CS5345_IN_1 | CS5345_MCLK_1_5 },
+                  CX18_AV_AUDIO8, CS5345_IN_1 | CS5345_MCLK_1_5 },
                 { CX18_CARD_INPUT_LINE_IN1,
-                  CX23418_AUDIO_SERIAL, CS5345_IN_2 },
+                  CX18_AV_AUDIO_SERIAL, CS5345_IN_2 },
                 { CX18_CARD_INPUT_LINE_IN2,
-                  CX23418_AUDIO_SERIAL, CS5345_IN_2 },
+                  CX18_AV_AUDIO_SERIAL, CS5345_IN_3 },
         },
         .radio_input = { CX18_CARD_INPUT_AUD_TUNER,
-                         CX23418_AUDIO_SERIAL, 0 },
+                         CX18_AV_AUDIO_SERIAL, CS5345_IN_4 },
         .ddr = {
                 /* Samsung K4D263238G-VC33 memory */
                 .chip_config = 0x003,
@@ -121,6 +127,11 @@ static const struct cx18_card cx18_card_hvr1600_samsung = {
         },
         .gpio_init.initial_value = 0x3001,
         .gpio_init.direction = 0x3001,
+        .gpio_i2c_slave_reset = {
+                .active_lo_mask = 0x3001,
+                .msecs_asserted = 10,
+                .msecs_recovery = 40,
+        },
         .i2c = &cx18_i2c_std,
 };
 
@@ -141,19 +152,19 @@ static const struct cx18_card cx18_card_h900 = {
         .hw_audio_ctrl = CX18_HW_CX23418,
         .hw_all = CX18_HW_TUNER,
         .video_inputs = {
-                { CX18_CARD_INPUT_VID_TUNER,  0, CX23418_COMPOSITE2 },
+                { CX18_CARD_INPUT_VID_TUNER,  0, CX18_AV_COMPOSITE2 },
                 { CX18_CARD_INPUT_SVIDEO1,    1,
-                        CX23418_SVIDEO_LUMA3 | CX23418_SVIDEO_CHROMA4 },
-                { CX18_CARD_INPUT_COMPOSITE1, 1, CX23418_COMPOSITE1 },
+                        CX18_AV_SVIDEO_LUMA3 | CX18_AV_SVIDEO_CHROMA4 },
+                { CX18_CARD_INPUT_COMPOSITE1, 1, CX18_AV_COMPOSITE1 },
         },
         .audio_inputs = {
                 { CX18_CARD_INPUT_AUD_TUNER,
-                  CX23418_AUDIO8, 0 },
+                  CX18_AV_AUDIO8, 0 },
                 { CX18_CARD_INPUT_LINE_IN1,
-                  CX23418_AUDIO_SERIAL, 0 },
+                  CX18_AV_AUDIO_SERIAL, 0 },
         },
         .radio_input = { CX18_CARD_INPUT_AUD_TUNER,
-                         CX23418_AUDIO_SERIAL, 0 },
+                         CX18_AV_AUDIO_SERIAL, 0 },
         .tuners = {
                 { .std = V4L2_STD_ALL, .tuner = TUNER_XC2028 },
         },
@@ -183,23 +194,26 @@ static const struct cx18_card_pci_info cx18_pci_mpc718[] = {
 static const struct cx18_card cx18_card_mpc718 = {
         .type = CX18_CARD_YUAN_MPC718,
         .name = "Yuan MPC718",
-        .comment = "Not yet supported!\n",
-        .v4l2_capabilities = 0,
+        .comment = "Some Composite and S-Video inputs are currently working.\n",
+        .v4l2_capabilities = CX18_CAP_ENCODER,
         .hw_audio_ctrl = CX18_HW_CX23418,
         .hw_all = CX18_HW_TUNER,
         .video_inputs = {
-                { CX18_CARD_INPUT_VID_TUNER,  0, CX23418_COMPOSITE7 },
-                { CX18_CARD_INPUT_SVIDEO1,    1, CX23418_SVIDEO1    },
-                { CX18_CARD_INPUT_COMPOSITE1, 1, CX23418_COMPOSITE3 },
+                { CX18_CARD_INPUT_VID_TUNER,  0, CX18_AV_COMPOSITE2 },
+                { CX18_CARD_INPUT_SVIDEO1,    1,
+                                CX18_AV_SVIDEO_LUMA3 | CX18_AV_SVIDEO_CHROMA4 },
+                { CX18_CARD_INPUT_COMPOSITE1, 1, CX18_AV_COMPOSITE1 },
+                { CX18_CARD_INPUT_SVIDEO2,    2,
+                                CX18_AV_SVIDEO_LUMA7 | CX18_AV_SVIDEO_CHROMA8 },
+                { CX18_CARD_INPUT_COMPOSITE2, 2, CX18_AV_COMPOSITE6 },
+                { CX18_CARD_INPUT_COMPOSITE3, 2, CX18_AV_COMPOSITE3 },
         },
         .audio_inputs = {
-                { CX18_CARD_INPUT_AUD_TUNER,
-                  CX23418_AUDIO8, 0 },
-                { CX18_CARD_INPUT_LINE_IN1,
-                  CX23418_AUDIO_SERIAL, 0 },
+                { CX18_CARD_INPUT_AUD_TUNER, CX18_AV_AUDIO5,       0 },
+                { CX18_CARD_INPUT_LINE_IN1,  CX18_AV_AUDIO_SERIAL, 0 },
+                { CX18_CARD_INPUT_LINE_IN2,  CX18_AV_AUDIO_SERIAL, 0 },
         },
-        .radio_input = { CX18_CARD_INPUT_AUD_TUNER,
-                         CX23418_AUDIO_SERIAL, 0 },
+        .radio_input = { CX18_CARD_INPUT_AUD_TUNER, CX18_AV_AUDIO_SERIAL, 0 },
         .tuners = {
                 /* XC3028 tuner */
                 { .std = V4L2_STD_ALL, .tuner = TUNER_XC2028 },
diff --git a/drivers/media/video/cx18/cx18-cards.h b/drivers/media/video/cx18/cx18-cards.h
index bccb67f0db16..dc2dd945d4c3 100644
--- a/drivers/media/video/cx18/cx18-cards.h
+++ b/drivers/media/video/cx18/cx18-cards.h
@@ -36,36 +36,6 @@
 #define CX18_CARD_INPUT_COMPOSITE2      5
 #define CX18_CARD_INPUT_COMPOSITE3      6
 
-enum cx34180_video_input {
-        /* Composite video inputs In1-In8 */
-        CX23418_COMPOSITE1 = 1,
-        CX23418_COMPOSITE2,
-        CX23418_COMPOSITE3,
-        CX23418_COMPOSITE4,
-        CX23418_COMPOSITE5,
-        CX23418_COMPOSITE6,
-        CX23418_COMPOSITE7,
-        CX23418_COMPOSITE8,
-
-        /* S-Video inputs consist of one luma input (In1-In4) ORed with one
-           chroma input (In5-In8) */
-        CX23418_SVIDEO_LUMA1 = 0x10,
-        CX23418_SVIDEO_LUMA2 = 0x20,
-        CX23418_SVIDEO_LUMA3 = 0x30,
-        CX23418_SVIDEO_LUMA4 = 0x40,
-        CX23418_SVIDEO_CHROMA4 = 0x400,
-        CX23418_SVIDEO_CHROMA5 = 0x500,
-        CX23418_SVIDEO_CHROMA6 = 0x600,
-        CX23418_SVIDEO_CHROMA7 = 0x700,
-        CX23418_SVIDEO_CHROMA8 = 0x800,
-
-        /* S-Video aliases for common luma/chroma combinations */
-        CX23418_SVIDEO1 = 0x510,
-        CX23418_SVIDEO2 = 0x620,
-        CX23418_SVIDEO3 = 0x730,
-        CX23418_SVIDEO4 = 0x840,
-};
-
 /* audio inputs */
 #define CX18_CARD_INPUT_AUD_TUNER       1
 #define CX18_CARD_INPUT_LINE_IN1        2
@@ -75,16 +45,6 @@ enum cx34180_video_input {
 #define CX18_CARD_MAX_AUDIO_INPUTS 3
 #define CX18_CARD_MAX_TUNERS       2
 
-enum cx23418_audio_input {
-        /* Audio inputs: serial or In4-In8 */
-        CX23418_AUDIO_SERIAL,
-        CX23418_AUDIO4 = 4,
-        CX23418_AUDIO5,
-        CX23418_AUDIO6,
-        CX23418_AUDIO7,
-        CX23418_AUDIO8,
-};
-
 /* V4L2 capability aliases */
 #define CX18_CAP_ENCODER (V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_TUNER | \
                           V4L2_CAP_AUDIO | V4L2_CAP_READWRITE)
@@ -118,6 +78,13 @@ struct cx18_gpio_init { /* set initial GPIO DIR and OUT values */
         u32 initial_value;
 };
 
+struct cx18_gpio_i2c_slave_reset {
+        u32 active_lo_mask; /* GPIO outputs that reset i2c chips when low */
+        u32 active_hi_mask; /* GPIO outputs that reset i2c chips when high */
+        int msecs_asserted; /* time period reset must remain asserted */
+        int msecs_recovery; /* time after deassert for chips to be ready */
+};
+
 struct cx18_card_tuner {
         v4l2_std_id std;        /* standard for which the tuner is suitable */
         int         tuner;      /* tuner ID (from tuner.h) */
@@ -154,7 +121,8 @@ struct cx18_card {
 
         /* GPIO card-specific settings */
         u8 xceive_pin;          /* XCeive tuner GPIO reset pin */
-        struct cx18_gpio_init           gpio_init;
+        struct cx18_gpio_init            gpio_init;
+        struct cx18_gpio_i2c_slave_reset gpio_i2c_slave_reset;
 
         struct cx18_card_tuner tuners[CX18_CARD_MAX_TUNERS];
         struct cx18_card_tuner_i2c *i2c;
diff --git a/drivers/media/video/cx18/cx18-dvb.c b/drivers/media/video/cx18/cx18-dvb.c
index c9744173f969..cae38985b131 100644
--- a/drivers/media/video/cx18/cx18-dvb.c
+++ b/drivers/media/video/cx18/cx18-dvb.c
@@ -69,11 +69,21 @@ static int cx18_dvb_start_feed(struct dvb_demux_feed *feed)
         struct dvb_demux *demux = feed->demux;
         struct cx18_stream *stream = (struct cx18_stream *) demux->priv;
         struct cx18 *cx = stream->cx;
-        int ret = -EINVAL;
+        int ret;
         u32 v;
 
         CX18_DEBUG_INFO("Start feed: pid = 0x%x index = %d\n",
                         feed->pid, feed->index);
+
+        mutex_lock(&cx->serialize_lock);
+        ret = cx18_init_on_first_open(cx);
+        mutex_unlock(&cx->serialize_lock);
+        if (ret) {
+                CX18_ERR("Failed to initialize firmware starting DVB feed\n");
+                return ret;
+        }
+        ret = -EINVAL;
+
         switch (cx->card->type) {
         case CX18_CARD_HVR_1600_ESMT:
         case CX18_CARD_HVR_1600_SAMSUNG:
@@ -101,6 +111,11 @@ static int cx18_dvb_start_feed(struct dvb_demux_feed *feed)
                 if (stream->dvb.feeding++ == 0) {
                         CX18_DEBUG_INFO("Starting Transport DMA\n");
                         ret = cx18_start_v4l2_encode_stream(stream);
+                        if (ret < 0) {
+                                CX18_DEBUG_INFO(
+                                        "Failed to start Transport DMA\n");
+                                stream->dvb.feeding--;
+                        }
                 } else
                         ret = 0;
                 mutex_unlock(&stream->dvb.feedlock);
diff --git a/drivers/media/video/cx18/cx18-gpio.c b/drivers/media/video/cx18/cx18-gpio.c
index ceb63653c926..b302833f6f9d 100644
--- a/drivers/media/video/cx18/cx18-gpio.c
+++ b/drivers/media/video/cx18/cx18-gpio.c
@@ -53,10 +53,34 @@ static void gpio_write(struct cx18 *cx)
         write_reg(((dir & 0xffff) << 16) | (val & 0xffff),
                         CX18_REG_GPIO_OUT1);
         write_reg(dir & 0xffff0000, CX18_REG_GPIO_DIR2);
-        write_reg((dir & 0xffff0000) | ((val & 0xffff0000) >> 16),
+        write_reg_sync((dir & 0xffff0000) | ((val & 0xffff0000) >> 16),
                         CX18_REG_GPIO_OUT2);
 }
 
+void cx18_reset_i2c_slaves_gpio(struct cx18 *cx)
+{
+        const struct cx18_gpio_i2c_slave_reset *p;
+
+        p = &cx->card->gpio_i2c_slave_reset;
+
+        if ((p->active_lo_mask | p->active_hi_mask) == 0)
+                return;
+
+        /* Assuming that the masks are a subset of the bits in gpio_dir */
+
+        /* Assert */
+        cx->gpio_val =
+                (cx->gpio_val | p->active_hi_mask) & ~(p->active_lo_mask);
+        gpio_write(cx);
+        schedule_timeout_uninterruptible(msecs_to_jiffies(p->msecs_asserted));
+
+        /* Deassert */
+        cx->gpio_val =
+                (cx->gpio_val | p->active_lo_mask) & ~(p->active_hi_mask);
+        gpio_write(cx);
+        schedule_timeout_uninterruptible(msecs_to_jiffies(p->msecs_recovery));
+}
+
 void cx18_gpio_init(struct cx18 *cx)
 {
         cx->gpio_dir = cx->card->gpio_init.direction;
diff --git a/drivers/media/video/cx18/cx18-gpio.h b/drivers/media/video/cx18/cx18-gpio.h
index 41bac8856b50..525c328f748a 100644
--- a/drivers/media/video/cx18/cx18-gpio.h
+++ b/drivers/media/video/cx18/cx18-gpio.h
@@ -21,4 +21,5 @@
  */
 
 void cx18_gpio_init(struct cx18 *cx);
+void cx18_reset_i2c_slaves_gpio(struct cx18 *cx);
 int cx18_reset_tuner_gpio(void *dev, int cmd, int value);
diff --git a/drivers/media/video/cx18/cx18-i2c.c b/drivers/media/video/cx18/cx18-i2c.c
index 1d6c51a75313..680bc4e35b79 100644
--- a/drivers/media/video/cx18/cx18-i2c.c
+++ b/drivers/media/video/cx18/cx18-i2c.c
@@ -405,6 +405,8 @@ int init_cx18_i2c(struct cx18 *cx)
         cx18_setscl(&cx->i2c_algo_cb_data[1], 1);
         cx18_setsda(&cx->i2c_algo_cb_data[1], 1);
 
+        cx18_reset_i2c_slaves_gpio(cx);
+
         return i2c_bit_add_bus(&cx->i2c_adap[0]) ||
                 i2c_bit_add_bus(&cx->i2c_adap[1]);
 }
diff --git a/drivers/media/video/cx25840/cx25840-core.c b/drivers/media/video/cx25840/cx25840-core.c
index 607efdcd22f8..1da6f134888d 100644
--- a/drivers/media/video/cx25840/cx25840-core.c
+++ b/drivers/media/video/cx25840/cx25840-core.c
@@ -433,7 +433,7 @@ static int set_input(struct i2c_client *client, enum cx25840_video_input vid_inp
                 int chroma = vid_input & 0xf00;
 
                 if ((vid_input & ~0xff0) ||
-                    luma < CX25840_SVIDEO_LUMA1 || luma > CX25840_SVIDEO_LUMA4 ||
+                    luma < CX25840_SVIDEO_LUMA1 || luma > CX25840_SVIDEO_LUMA8 ||
                     chroma < CX25840_SVIDEO_CHROMA4 || chroma > CX25840_SVIDEO_CHROMA8) {
                         v4l_err(client, "0x%04x is not a valid video input!\n",
                                 vid_input);
diff --git a/drivers/media/video/cx88/cx88-alsa.c b/drivers/media/video/cx88/cx88-alsa.c
index e976fc6bef7c..80c8883e54b5 100644
--- a/drivers/media/video/cx88/cx88-alsa.c
+++ b/drivers/media/video/cx88/cx88-alsa.c
@@ -332,6 +332,12 @@ static int snd_cx88_pcm_open(struct snd_pcm_substream *substream)
         struct snd_pcm_runtime *runtime = substream->runtime;
         int err;
 
+        if (!chip) {
+                printk(KERN_ERR "BUG: cx88 can't find device struct."
+                                " Can't proceed with open\n");
+                return -ENODEV;
+        }
+
         err = snd_pcm_hw_constraint_pow2(runtime, 0, SNDRV_PCM_HW_PARAM_PERIODS);
         if (err < 0)
                 goto _error;
diff --git a/drivers/media/video/em28xx/em28xx-audio.c b/drivers/media/video/em28xx/em28xx-audio.c
index 92b2a6db4fdc..3c006103c1eb 100644
--- a/drivers/media/video/em28xx/em28xx-audio.c
+++ b/drivers/media/video/em28xx/em28xx-audio.c
@@ -268,6 +268,12 @@ static int snd_em28xx_capture_open(struct snd_pcm_substream *substream)
 
         dprintk("opening device and trying to acquire exclusive lock\n");
 
+        if (!dev) {
+                printk(KERN_ERR "BUG: em28xx can't find device struct."
+                                " Can't proceed with open\n");
+                return -ENODEV;
+        }
+
         /* Sets volume, mute, etc */
 
         dev->mute = 0;
@@ -415,6 +421,12 @@ static int em28xx_audio_init(struct em28xx *dev)
         static int          devnr;
         int                 ret, err;
 
+        if (dev->has_audio_class) {
+                /* This device does not support the extension (in this case
+                   the device is expecting the snd-usb-audio module */
+                return 0;
+        }
+
         printk(KERN_INFO "em28xx-audio.c: probing for em28x1 "
                          "non standard usbaudio\n");
         printk(KERN_INFO "em28xx-audio.c: Copyright (C) 2006 Markus "
@@ -458,6 +470,12 @@ static int em28xx_audio_fini(struct em28xx *dev)
         if (dev == NULL)
                 return 0;
 
+        if (dev->has_audio_class) {
+                /* This device does not support the extension (in this case
+                   the device is expecting the snd-usb-audio module */
+                return 0;
+        }
+
         if (dev->adev) {
                 snd_card_free(dev->adev->sndcard);
                 kfree(dev->adev);
diff --git a/drivers/media/video/em28xx/em28xx-cards.c b/drivers/media/video/em28xx/em28xx-cards.c
index 3e4f3c7e92e7..8cbda43727c3 100644
--- a/drivers/media/video/em28xx/em28xx-cards.c
+++ b/drivers/media/video/em28xx/em28xx-cards.c
@@ -157,6 +157,7 @@ struct em28xx_board em28xx_boards[] = {
                 .tda9887_conf = TDA9887_PRESENT,
                 .tuner_type   = TUNER_XC2028,
                 .mts_firmware = 1,
+                .has_dvb        = 1,
                 .decoder      = EM28XX_TVP5150,
                 .input          = { {
                         .type     = EM28XX_VMUX_TELEVISION,
@@ -524,6 +525,9 @@ void em28xx_pre_card_setup(struct em28xx *dev)
         rc = em28xx_read_reg(dev, EM28XX_R0A_CHIPID);
         if (rc > 0) {
                 switch (rc) {
+                case CHIP_ID_EM2860:
+                        em28xx_info("chip ID is em2860\n");
+                        break;
                 case CHIP_ID_EM2883:
                         em28xx_info("chip ID is em2882/em2883\n");
                         dev->wait_after_write = 0;
diff --git a/drivers/media/video/em28xx/em28xx-dvb.c b/drivers/media/video/em28xx/em28xx-dvb.c
index 8cf4983f0039..0b2333ee07f8 100644
--- a/drivers/media/video/em28xx/em28xx-dvb.c
+++ b/drivers/media/video/em28xx/em28xx-dvb.c
@@ -382,6 +382,11 @@ static int dvb_init(struct em28xx *dev)
         int result = 0;
         struct em28xx_dvb *dvb;
 
+        if (!dev->has_dvb) {
+                /* This device does not support the extension */
+                return 0;
+        }
+
         dvb = kzalloc(sizeof(struct em28xx_dvb), GFP_KERNEL);
 
         if (dvb == NULL) {
@@ -444,6 +449,11 @@ out_free:
 
 static int dvb_fini(struct em28xx *dev)
 {
+        if (!dev->has_dvb) {
+                /* This device does not support the extension */
+                return 0;
+        }
+
         if (dev->dvb) {
                 unregister_dvb(dev->dvb);
                 dev->dvb = NULL;
diff --git a/drivers/media/video/em28xx/em28xx-reg.h b/drivers/media/video/em28xx/em28xx-reg.h
index 9058bed07953..fac1ab23f621 100644
--- a/drivers/media/video/em28xx/em28xx-reg.h
+++ b/drivers/media/video/em28xx/em28xx-reg.h
@@ -84,5 +84,6 @@
 
 /* FIXME: Need to be populated with the other chip ID's */
 enum em28xx_chip_id {
+        CHIP_ID_EM2860 = 34,
         CHIP_ID_EM2883 = 36,
 };
diff --git a/drivers/media/video/em28xx/em28xx-video.c b/drivers/media/video/em28xx/em28xx-video.c
index fb163ecd9216..285bc62bbe46 100644
--- a/drivers/media/video/em28xx/em28xx-video.c
+++ b/drivers/media/video/em28xx/em28xx-video.c
@@ -1848,32 +1848,28 @@ static DEFINE_MUTEX(em28xx_extension_devlist_lock);
 
 int em28xx_register_extension(struct em28xx_ops *ops)
 {
-        struct em28xx *h, *dev = NULL;
-
-        list_for_each_entry(h, &em28xx_devlist, devlist)
-                dev = h;
+        struct em28xx *dev = NULL;
 
         mutex_lock(&em28xx_extension_devlist_lock);
         list_add_tail(&ops->next, &em28xx_extension_devlist);
-        if (dev)
-                ops->init(dev);
-
+        list_for_each_entry(dev, &em28xx_devlist, devlist) {
+                if (dev)
+                        ops->init(dev);
+        }
         printk(KERN_INFO "Em28xx: Initialized (%s) extension\n", ops->name);
         mutex_unlock(&em28xx_extension_devlist_lock);
-
         return 0;
 }
 EXPORT_SYMBOL(em28xx_register_extension);
 
 void em28xx_unregister_extension(struct em28xx_ops *ops)
 {
-        struct em28xx *h, *dev = NULL;
-
-        list_for_each_entry(h, &em28xx_devlist, devlist)
-                dev = h;
+        struct em28xx *dev = NULL;
 
-        if (dev)
-                ops->fini(dev);
+        list_for_each_entry(dev, &em28xx_devlist, devlist) {
+                if (dev)
+                        ops->fini(dev);
+        }
 
         mutex_lock(&em28xx_extension_devlist_lock);
         printk(KERN_INFO "Em28xx: Removed (%s) extension\n", ops->name);
diff --git a/drivers/media/video/pxa_camera.c b/drivers/media/video/pxa_camera.c
index 7cc8e9b19fb7..5ec5bb9a94d2 100644
--- a/drivers/media/video/pxa_camera.c
+++ b/drivers/media/video/pxa_camera.c
@@ -1019,12 +1019,12 @@ static int pxa_camera_probe(struct platform_device *pdev)
         struct pxa_camera_dev *pcdev;
         struct resource *res;
         void __iomem *base;
-        unsigned int irq;
+        int irq;
         int err = 0;
 
         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
         irq = platform_get_irq(pdev, 0);
-        if (!res || !irq) {
+        if (!res || irq < 0) {
                 err = -ENODEV;
                 goto exit;
         }
diff --git a/drivers/media/video/saa7134/saa7134-alsa.c b/drivers/media/video/saa7134/saa7134-alsa.c
index ba3082422a01..f118de6e3672 100644
--- a/drivers/media/video/saa7134/saa7134-alsa.c
+++ b/drivers/media/video/saa7134/saa7134-alsa.c
@@ -613,9 +613,15 @@ static int snd_card_saa7134_capture_open(struct snd_pcm_substream * substream)
         struct snd_pcm_runtime *runtime = substream->runtime;
         snd_card_saa7134_pcm_t *pcm;
         snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
-        struct saa7134_dev *dev = saa7134->dev;
+        struct saa7134_dev *dev;
         int amux, err;
 
+        if (!saa7134) {
+                printk(KERN_ERR "BUG: saa7134 can't find device struct."
+                                " Can't proceed with open\n");
+                return -ENODEV;
+        }
+        dev = saa7134->dev;
         mutex_lock(&dev->dmasound.lock);
 
         dev->dmasound.read_count  = 0;
diff --git a/drivers/media/video/saa7134/saa7134-cards.c b/drivers/media/video/saa7134/saa7134-cards.c
index b111903aa322..2618cfa592e7 100644
--- a/drivers/media/video/saa7134/saa7134-cards.c
+++ b/drivers/media/video/saa7134/saa7134-cards.c
@@ -4114,11 +4114,7 @@ struct saa7134_board saa7134_boards[] = {
                 .radio_type     = UNSET,
                 .tuner_addr     = ADDR_UNSET,
                 .radio_addr     = ADDR_UNSET,
-                 /*
-                    TODO:
                  .mpeg           = SAA7134_MPEG_DVB,
-                 */
-
                  .inputs         = {{
                          .name = name_tv,
                          .vmux = 1,
@@ -4157,7 +4153,7 @@ struct saa7134_board saa7134_boards[] = {
                 } },
                 .radio = {
                         .name = name_radio,
-                        .amux = LINE1,
+                        .amux = TV,
                 },
         },
         [SAA7134_BOARD_AVERMEDIA_M115] = {
@@ -4167,6 +4163,7 @@ struct saa7134_board saa7134_boards[] = {
                 .radio_type     = UNSET,
                 .tuner_addr     = ADDR_UNSET,
                 .radio_addr     = ADDR_UNSET,
+                .mpeg           = SAA7134_MPEG_DVB,
                 .inputs         = {{
                         .name = name_tv,
                         .vmux = 1,
@@ -5351,22 +5348,21 @@ static int saa7134_xc2028_callback(struct saa7134_dev *dev,
 {
         switch (command) {
         case XC2028_TUNER_RESET:
-                saa_andorl(SAA7134_GPIO_GPMODE0 >> 2, 0x06e20000, 0x06e20000);
-                saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, 0x06a20000, 0x06a20000);
-                mdelay(250);
-                saa_andorl(SAA7134_GPIO_GPMODE0 >> 2, 0x06e20000, 0);
-                saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, 0x06a20000, 0);
-                mdelay(250);
-                saa_andorl(SAA7134_GPIO_GPMODE0 >> 2, 0x06e20000, 0x06e20000);
-                saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, 0x06a20000, 0x06a20000);
-                mdelay(250);
-                saa_andorl(SAA7133_ANALOG_IO_SELECT >> 2, 0x02, 0x02);
-                saa_andorl(SAA7134_ANALOG_IN_CTRL1 >> 2, 0x81, 0x81);
-                saa_andorl(SAA7134_AUDIO_CLOCK0 >> 2, 0x03187de7, 0x03187de7);
-                saa_andorl(SAA7134_AUDIO_PLL_CTRL >> 2, 0x03, 0x03);
-                saa_andorl(SAA7134_AUDIO_CLOCKS_PER_FIELD0 >> 2,
-                           0x0001e000, 0x0001e000);
-                return 0;
+                saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, 0x00008000, 0x00000000);
+                saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, 0x00008000, 0x00008000);
+                switch (dev->board) {
+                case SAA7134_BOARD_AVERMEDIA_CARDBUS_506:
+                        saa7134_set_gpio(dev, 23, 0);
+                        msleep(10);
+                        saa7134_set_gpio(dev, 23, 1);
+                break;
+                case SAA7134_BOARD_AVERMEDIA_A16D:
+                        saa7134_set_gpio(dev, 21, 0);
+                        msleep(10);
+                        saa7134_set_gpio(dev, 21, 1);
+                break;
+                }
+        return 0;
         }
         return -EINVAL;
 }
@@ -5553,9 +5549,7 @@ int saa7134_board_init1(struct saa7134_dev *dev)
                 saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, 0x08000000, 0x00000000);
                 break;
         case SAA7134_BOARD_AVERMEDIA_CARDBUS:
-        case SAA7134_BOARD_AVERMEDIA_CARDBUS_506:
         case SAA7134_BOARD_AVERMEDIA_M115:
-        case SAA7134_BOARD_AVERMEDIA_A16D:
                 /* power-down tuner chip */
                 saa_andorl(SAA7134_GPIO_GPMODE0 >> 2,   0xffffffff, 0);
                 saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, 0xffffffff, 0);
@@ -5565,6 +5559,18 @@ int saa7134_board_init1(struct saa7134_dev *dev)
                 saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, 0xffffffff, 0xffffffff);
                 msleep(10);
                 break;
+        case SAA7134_BOARD_AVERMEDIA_CARDBUS_506:
+                saa7134_set_gpio(dev, 23, 0);
+                msleep(10);
+                saa7134_set_gpio(dev, 23, 1);
+                break;
+        case SAA7134_BOARD_AVERMEDIA_A16D:
+                saa7134_set_gpio(dev, 21, 0);
+                msleep(10);
+                saa7134_set_gpio(dev, 21, 1);
+                msleep(1);
+                dev->has_remote = SAA7134_REMOTE_GPIO;
+                break;
         case SAA7134_BOARD_BEHOLD_COLUMBUS_TVFM:
                 /* power-down tuner chip */
                 saa_andorl(SAA7134_GPIO_GPMODE0 >> 2,   0x000A8004, 0x000A8004);
@@ -5615,7 +5621,8 @@ int saa7134_board_init1(struct saa7134_dev *dev)
                 saa_andorl(SAA7134_GPIO_GPMODE0 >> 2,   0x80040100, 0x80040100);
                 saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, 0x80040100, 0x00040100);
                 printk("%s: %s: hybrid analog/dvb card\n"
-                       "%s: Sorry, only the analog inputs are supported for now.\n",
+                       "%s: Sorry, only analog s-video and composite input "
+                       "are supported for now.\n",
                         dev->name, card(dev).name, dev->name);
                 break;
         }
@@ -5675,6 +5682,7 @@ static void saa7134_tuner_setup(struct saa7134_dev *dev)
 
                 switch (dev->board) {
                 case SAA7134_BOARD_AVERMEDIA_A16D:
+                case SAA7134_BOARD_AVERMEDIA_CARDBUS_506:
                         ctl.demod = XC3028_FE_ZARLINK456;
                         break;
                 default:
diff --git a/drivers/media/video/saa7134/saa7134-dvb.c b/drivers/media/video/saa7134/saa7134-dvb.c
index 469f93aac008..341b101b0357 100644
--- a/drivers/media/video/saa7134/saa7134-dvb.c
+++ b/drivers/media/video/saa7134/saa7134-dvb.c
@@ -153,12 +153,12 @@ static int mt352_aver777_init(struct dvb_frontend* fe)
         return 0;
 }
 
-static int mt352_aver_a16d_init(struct dvb_frontend *fe)
+static int mt352_avermedia_xc3028_init(struct dvb_frontend *fe)
 {
-        static u8 clock_config []  = { CLOCK_CTL,  0x38, 0x2d };
-        static u8 reset []         = { RESET,      0x80 };
-        static u8 adc_ctl_1_cfg [] = { ADC_CTL_1,  0x40 };
-        static u8 agc_cfg []       = { AGC_TARGET, 0x28, 0xa0 };
+        static u8 clock_config []  = { CLOCK_CTL, 0x38, 0x2d };
+        static u8 reset []         = { RESET, 0x80 };
+        static u8 adc_ctl_1_cfg [] = { ADC_CTL_1, 0x40 };
+        static u8 agc_cfg []       = { AGC_TARGET, 0xe };
         static u8 capt_range_cfg[] = { CAPT_RANGE, 0x33 };
 
         mt352_write(fe, clock_config,   sizeof(clock_config));
@@ -167,12 +167,9 @@ static int mt352_aver_a16d_init(struct dvb_frontend *fe)
         mt352_write(fe, adc_ctl_1_cfg,  sizeof(adc_ctl_1_cfg));
         mt352_write(fe, agc_cfg,        sizeof(agc_cfg));
         mt352_write(fe, capt_range_cfg, sizeof(capt_range_cfg));
-
         return 0;
 }
 
-
-
 static int mt352_pinnacle_tuner_set_params(struct dvb_frontend* fe,
                                            struct dvb_frontend_parameters* params)
 {
@@ -215,14 +212,10 @@ static struct mt352_config avermedia_777 = {
         .demod_init    = mt352_aver777_init,
 };
 
-static struct mt352_config avermedia_16d = {
-        .demod_address = 0xf,
-        .demod_init    = mt352_aver_a16d_init,
-};
-
-static struct mt352_config avermedia_e506r_mt352_dev = {
+static struct mt352_config avermedia_xc3028_mt352_dev = {
         .demod_address   = (0x1e >> 1),
         .no_tuner        = 1,
+        .demod_init      = mt352_avermedia_xc3028_init,
 };
 
 /* ==================================================================
@@ -975,9 +968,10 @@ static int dvb_init(struct saa7134_dev *dev)
                 }
                 break;
         case SAA7134_BOARD_AVERMEDIA_A16D:
-                dprintk("avertv A16D dvb setup\n");
-                dev->dvb.frontend = dvb_attach(mt352_attach, &avermedia_16d,
-                                               &dev->i2c_adap);
+                dprintk("AverMedia A16D dvb setup\n");
+                dev->dvb.frontend = dvb_attach(mt352_attach,
+                                                &avermedia_xc3028_mt352_dev,
+                                                &dev->i2c_adap);
                 attach_xc3028 = 1;
                 break;
         case SAA7134_BOARD_MD7134:
@@ -1091,7 +1085,8 @@ static int dvb_init(struct saa7134_dev *dev)
                                         ads_tech_duo_config.tuner_address);
                                 goto dettach_frontend;
                         }
-                }
+                } else
+                        wprintk("failed to attach tda10046\n");
                 break;
         case SAA7134_BOARD_TEVION_DVBT_220RF:
                 if (configure_tda827x_fe(dev, &tevion_dvbt220rf_config,
@@ -1260,11 +1255,14 @@ static int dvb_init(struct saa7134_dev *dev)
                         goto dettach_frontend;
                 break;
         case SAA7134_BOARD_AVERMEDIA_CARDBUS_506:
+                dprintk("AverMedia E506R dvb setup\n");
+                saa7134_set_gpio(dev, 25, 0);
+                msleep(10);
+                saa7134_set_gpio(dev, 25, 1);
                 dev->dvb.frontend = dvb_attach(mt352_attach,
-                                               &avermedia_e506r_mt352_dev,
-                                               &dev->i2c_adap);
+                                                &avermedia_xc3028_mt352_dev,
+                                                &dev->i2c_adap);
                 attach_xc3028 = 1;
-                break;
         case SAA7134_BOARD_MD7134_BRIDGE_2:
                 dev->dvb.frontend = dvb_attach(tda10086_attach,
                                                 &sd1878_4m, &dev->i2c_adap);
@@ -1338,7 +1336,8 @@ static int dvb_init(struct saa7134_dev *dev)
         return ret;
 
 dettach_frontend:
-        dvb_frontend_detach(dev->dvb.frontend);
+        if (dev->dvb.frontend)
+                dvb_frontend_detach(dev->dvb.frontend);
         dev->dvb.frontend = NULL;
 
         return -1;
diff --git a/drivers/media/video/saa7134/saa7134-empress.c b/drivers/media/video/saa7134/saa7134-empress.c
index 81431ee41842..3ae71a340822 100644
--- a/drivers/media/video/saa7134/saa7134-empress.c
+++ b/drivers/media/video/saa7134/saa7134-empress.c
@@ -110,9 +110,10 @@ static int ts_release(struct inode *inode, struct file *file)
 {
         struct saa7134_dev *dev = file->private_data;
 
+        mutex_lock(&dev->empress_tsq.vb_lock);
+
         videobuf_stop(&dev->empress_tsq);
         videobuf_mmap_free(&dev->empress_tsq);
-        dev->empress_users--;
 
         /* stop the encoder */
         ts_reset_encoder(dev);
@@ -121,6 +122,10 @@ static int ts_release(struct inode *inode, struct file *file)
         saa_writeb(SAA7134_AUDIO_MUTE_CTRL,
                 saa_readb(SAA7134_AUDIO_MUTE_CTRL) | (1 << 6));
 
+        dev->empress_users--;
+
+        mutex_unlock(&dev->empress_tsq.vb_lock);
+
         return 0;
 }
 
@@ -218,8 +223,7 @@ static int empress_enum_fmt_cap(struct file *file, void  *priv,
 static int empress_g_fmt_cap(struct file *file, void *priv,
                                 struct v4l2_format *f)
 {
-        struct saa7134_fh *fh = priv;
-        struct saa7134_dev *dev = fh->dev;
+        struct saa7134_dev *dev = file->private_data;
 
         saa7134_i2c_call_clients(dev, VIDIOC_G_FMT, f);
 
@@ -232,8 +236,7 @@ static int empress_g_fmt_cap(struct file *file, void *priv,
 static int empress_s_fmt_cap(struct file *file, void *priv,
                                 struct v4l2_format *f)
 {
-        struct saa7134_fh *fh = priv;
-        struct saa7134_dev *dev = fh->dev;
+        struct saa7134_dev *dev = file->private_data;
 
         saa7134_i2c_call_clients(dev, VIDIOC_S_FMT, f);
 
@@ -247,8 +250,7 @@ static int empress_s_fmt_cap(struct file *file, void *priv,
 static int empress_reqbufs(struct file *file, void *priv,
                                         struct v4l2_requestbuffers *p)
 {
-        struct saa7134_fh *fh = priv;
-        struct saa7134_dev *dev = fh->dev;
+        struct saa7134_dev *dev = file->private_data;
 
         return videobuf_reqbufs(&dev->empress_tsq, p);
 }
@@ -256,24 +258,21 @@ static int empress_reqbufs(struct file *file, void *priv,
 static int empress_querybuf(struct file *file, void *priv,
                                         struct v4l2_buffer *b)
 {
-        struct saa7134_fh *fh = priv;
-        struct saa7134_dev *dev = fh->dev;
+        struct saa7134_dev *dev = file->private_data;
 
         return videobuf_querybuf(&dev->empress_tsq, b);
 }
 
 static int empress_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
 {
-        struct saa7134_fh *fh = priv;
-        struct saa7134_dev *dev = fh->dev;
+        struct saa7134_dev *dev = file->private_data;
 
         return videobuf_qbuf(&dev->empress_tsq, b);
 }
 
 static int empress_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
 {
-        struct saa7134_fh *fh = priv;
-        struct saa7134_dev *dev = fh->dev;
+        struct saa7134_dev *dev = file->private_data;
 
         return videobuf_dqbuf(&dev->empress_tsq, b,
                                 file->f_flags & O_NONBLOCK);
@@ -282,8 +281,7 @@ static int empress_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
 static int empress_streamon(struct file *file, void *priv,
                                         enum v4l2_buf_type type)
 {
-        struct saa7134_fh *fh = priv;
-        struct saa7134_dev *dev = fh->dev;
+        struct saa7134_dev *dev = file->private_data;
 
         return videobuf_streamon(&dev->empress_tsq);
 }
@@ -291,8 +289,7 @@ static int empress_streamon(struct file *file, void *priv,
 static int empress_streamoff(struct file *file, void *priv,
                                         enum v4l2_buf_type type)
 {
-        struct saa7134_fh *fh = priv;
-        struct saa7134_dev *dev = fh->dev;
+        struct saa7134_dev *dev = file->private_data;
 
         return videobuf_streamoff(&dev->empress_tsq);
 }
@@ -300,8 +297,7 @@ static int empress_streamoff(struct file *file, void *priv,
 static int empress_s_ext_ctrls(struct file *file, void *priv,
                                struct v4l2_ext_controls *ctrls)
 {
-        struct saa7134_fh *fh = priv;
-        struct saa7134_dev *dev = fh->dev;
+        struct saa7134_dev *dev = file->private_data;
 
         /* count == 0 is abused in saa6752hs.c, so that special
                 case is handled here explicitly. */
@@ -320,8 +316,7 @@ static int empress_s_ext_ctrls(struct file *file, void *priv,
 static int empress_g_ext_ctrls(struct file *file, void *priv,
                                struct v4l2_ext_controls *ctrls)
 {
-        struct saa7134_fh *fh = priv;
-        struct saa7134_dev *dev = fh->dev;
+        struct saa7134_dev *dev = file->private_data;
 
         if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG)
                 return -EINVAL;
diff --git a/drivers/media/video/saa7134/saa7134-input.c b/drivers/media/video/saa7134/saa7134-input.c
index 919632b10aae..76e6501d238d 100644
--- a/drivers/media/video/saa7134/saa7134-input.c
+++ b/drivers/media/video/saa7134/saa7134-input.c
@@ -323,6 +323,15 @@ int saa7134_input_init1(struct saa7134_dev *dev)
                 saa_setb(SAA7134_GPIO_GPMODE1, 0x1);
                 saa_setb(SAA7134_GPIO_GPSTATUS1, 0x1);
                 break;
+        case SAA7134_BOARD_AVERMEDIA_A16D:
+                ir_codes     = ir_codes_avermedia_a16d;
+                mask_keycode = 0x02F200;
+                mask_keydown = 0x000400;
+                polling      = 50; /* ms */
+                /* Without this we won't receive key up events */
+                saa_setb(SAA7134_GPIO_GPMODE1, 0x1);
+                saa_setb(SAA7134_GPIO_GPSTATUS1, 0x1);
+                break;
         case SAA7134_BOARD_KWORLD_TERMINATOR:
                 ir_codes     = ir_codes_pixelview;
                 mask_keycode = 0x00001f;
diff --git a/drivers/media/video/soc_camera.c b/drivers/media/video/soc_camera.c
index a1b92446c8b4..d015bfe00950 100644
--- a/drivers/media/video/soc_camera.c
+++ b/drivers/media/video/soc_camera.c
@@ -763,15 +763,6 @@ static struct device_driver ic_drv = {
         .owner  = THIS_MODULE,
 };
 
-/*
- * Image capture host - this is a host device, not a bus device, so,
- * no bus reference, no probing.
- */
-static struct class soc_camera_host_class = {
-        .owner          = THIS_MODULE,
-        .name           = "camera_host",
-};
-
 static void dummy_release(struct device *dev)
 {
 }
@@ -801,7 +792,6 @@ int soc_camera_host_register(struct soc_camera_host *ici)
 
         /* Number might be equal to the platform device ID */
         sprintf(ici->dev.bus_id, "camera_host%d", ici->nr);
-        ici->dev.class = &soc_camera_host_class;
 
         mutex_lock(&list_lock);
         list_for_each_entry(ix, &hosts, list) {
@@ -1003,14 +993,9 @@ static int __init soc_camera_init(void)
         ret = driver_register(&ic_drv);
         if (ret)
                 goto edrvr;
-        ret = class_register(&soc_camera_host_class);
-        if (ret)
-                goto eclr;
 
         return 0;
 
-eclr:
-        driver_unregister(&ic_drv);
 edrvr:
         bus_unregister(&soc_camera_bus_type);
         return ret;
@@ -1018,7 +1003,6 @@ edrvr:
 
 static void __exit soc_camera_exit(void)
 {
-        class_unregister(&soc_camera_host_class);
         driver_unregister(&ic_drv);
         bus_unregister(&soc_camera_bus_type);
 }
diff --git a/drivers/media/video/uvc/Makefile b/drivers/media/video/uvc/Makefile
new file mode 100644
index 000000000000..968c1994eda0
--- /dev/null
+++ b/drivers/media/video/uvc/Makefile
@@ -0,0 +1,3 @@
+uvcvideo-objs  := uvc_driver.o uvc_queue.o uvc_v4l2.o uvc_video.o uvc_ctrl.o \
+                  uvc_status.o uvc_isight.o
+obj-$(CONFIG_USB_VIDEO_CLASS) += uvcvideo.o
diff --git a/drivers/media/video/uvc/uvc_ctrl.c b/drivers/media/video/uvc/uvc_ctrl.c
new file mode 100644
index 000000000000..f0ee46d15540
--- /dev/null
+++ b/drivers/media/video/uvc/uvc_ctrl.c
@@ -0,0 +1,1256 @@
+/*
+ *      uvc_ctrl.c  --  USB Video Class driver - Controls
+ *
+ *      Copyright (C) 2005-2008
+ *          Laurent Pinchart (laurent.pinchart@skynet.be)
+ *
+ *      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/kernel.h>
+#include <linux/version.h>
+#include <linux/list.h>
+#include <linux/module.h>
+#include <linux/uaccess.h>
+#include <linux/usb.h>
+#include <linux/videodev2.h>
+#include <linux/vmalloc.h>
+#include <linux/wait.h>
+#include <asm/atomic.h>
+
+#include "uvcvideo.h"
+
+#define UVC_CTRL_NDATA          2
+#define UVC_CTRL_DATA_CURRENT   0
+#define UVC_CTRL_DATA_BACKUP    1
+
+/* ------------------------------------------------------------------------
+ * Control, formats, ...
+ */
+
+static struct uvc_control_info uvc_ctrls[] = {
+        {
+                .entity         = UVC_GUID_UVC_PROCESSING,
+                .selector       = PU_BRIGHTNESS_CONTROL,
+                .index          = 0,
+                .size           = 2,
+                .flags          = UVC_CONTROL_SET_CUR | UVC_CONTROL_GET_RANGE
+                                | UVC_CONTROL_RESTORE,
+        },
+        {
+                .entity         = UVC_GUID_UVC_PROCESSING,
+                .selector       = PU_CONTRAST_CONTROL,
+                .index          = 1,
+                .size           = 2,
+                .flags          = UVC_CONTROL_SET_CUR | UVC_CONTROL_GET_RANGE
+                                | UVC_CONTROL_RESTORE,
+        },
+        {
+                .entity         = UVC_GUID_UVC_PROCESSING,
+                .selector       = PU_HUE_CONTROL,
+                .index          = 2,
+                .size           = 2,
+                .flags          = UVC_CONTROL_SET_CUR | UVC_CONTROL_GET_RANGE
+                                | UVC_CONTROL_RESTORE | UVC_CONTROL_AUTO_UPDATE,
+        },
+        {
+                .entity         = UVC_GUID_UVC_PROCESSING,
+                .selector       = PU_SATURATION_CONTROL,
+                .index          = 3,
+                .size           = 2,
+                .flags          = UVC_CONTROL_SET_CUR | UVC_CONTROL_GET_RANGE
+                                | UVC_CONTROL_RESTORE,
+        },
+        {
+                .entity         = UVC_GUID_UVC_PROCESSING,
+                .selector       = PU_SHARPNESS_CONTROL,
+                .index          = 4,
+                .size           = 2,
+                .flags          = UVC_CONTROL_SET_CUR | UVC_CONTROL_GET_RANGE
+                                | UVC_CONTROL_RESTORE,
+        },
+        {
+                .entity         = UVC_GUID_UVC_PROCESSING,
+                .selector       = PU_GAMMA_CONTROL,
+                .index          = 5,
+                .size           = 2,
+                .flags          = UVC_CONTROL_SET_CUR | UVC_CONTROL_GET_RANGE
+                                | UVC_CONTROL_RESTORE,
+        },
+        {
+                .entity         = UVC_GUID_UVC_PROCESSING,
+                .selector       = PU_BACKLIGHT_COMPENSATION_CONTROL,
+                .index          = 8,
+                .size           = 2,
+                .flags          = UVC_CONTROL_SET_CUR | UVC_CONTROL_GET_RANGE
+                                | UVC_CONTROL_RESTORE,
+        },
+        {
+                .entity         = UVC_GUID_UVC_PROCESSING,
+                .selector       = PU_GAIN_CONTROL,
+                .index          = 9,
+                .size           = 2,
+                .flags          = UVC_CONTROL_SET_CUR | UVC_CONTROL_GET_RANGE
+                                | UVC_CONTROL_RESTORE,
+        },
+        {
+                .entity         = UVC_GUID_UVC_PROCESSING,
+                .selector       = PU_POWER_LINE_FREQUENCY_CONTROL,
+                .index          = 10,
+                .size           = 1,
+                .flags          = UVC_CONTROL_SET_CUR | UVC_CONTROL_GET_RANGE
+                                | UVC_CONTROL_RESTORE,
+        },
+        {
+                .entity         = UVC_GUID_UVC_PROCESSING,
+                .selector       = PU_HUE_AUTO_CONTROL,
+                .index          = 11,
+                .size           = 1,
+                .flags          = UVC_CONTROL_SET_CUR | UVC_CONTROL_GET_CUR
+                                | UVC_CONTROL_GET_DEF | UVC_CONTROL_RESTORE,
+        },
+        {
+                .entity         = UVC_GUID_UVC_CAMERA,
+                .selector       = CT_AE_MODE_CONTROL,
+                .index          = 1,
+                .size           = 1,
+                .flags          = UVC_CONTROL_SET_CUR | UVC_CONTROL_GET_CUR
+                                | UVC_CONTROL_GET_DEF | UVC_CONTROL_GET_RES
+                                | UVC_CONTROL_RESTORE,
+        },
+        {
+                .entity         = UVC_GUID_UVC_CAMERA,
+                .selector       = CT_AE_PRIORITY_CONTROL,
+                .index          = 2,
+                .size           = 1,
+                .flags          = UVC_CONTROL_SET_CUR | UVC_CONTROL_GET_CUR
+                                | UVC_CONTROL_RESTORE,
+        },
+        {
+                .entity         = UVC_GUID_UVC_CAMERA,
+                .selector       = CT_EXPOSURE_TIME_ABSOLUTE_CONTROL,
+                .index          = 3,
+                .size           = 4,
+                .flags          = UVC_CONTROL_SET_CUR | UVC_CONTROL_GET_RANGE
+                                | UVC_CONTROL_RESTORE,
+        },
+        {
+                .entity         = UVC_GUID_UVC_CAMERA,
+                .selector       = CT_FOCUS_ABSOLUTE_CONTROL,
+                .index          = 5,
+                .size           = 2,
+                .flags          = UVC_CONTROL_SET_CUR | UVC_CONTROL_GET_RANGE
+                                | UVC_CONTROL_RESTORE | UVC_CONTROL_AUTO_UPDATE,
+        },
+        {
+                .entity         = UVC_GUID_UVC_CAMERA,
+                .selector       = CT_FOCUS_AUTO_CONTROL,
+                .index          = 17,
+                .size           = 1,
+                .flags          = UVC_CONTROL_SET_CUR | UVC_CONTROL_GET_CUR
+                                | UVC_CONTROL_GET_DEF | UVC_CONTROL_RESTORE,
+        },
+        {
+                .entity         = UVC_GUID_UVC_PROCESSING,
+                .selector       = PU_WHITE_BALANCE_TEMPERATURE_AUTO_CONTROL,
+                .index          = 12,
+                .size           = 1,
+                .flags          = UVC_CONTROL_SET_CUR | UVC_CONTROL_GET_CUR
+                                | UVC_CONTROL_GET_DEF | UVC_CONTROL_RESTORE,
+        },
+        {
+                .entity         = UVC_GUID_UVC_PROCESSING,
+                .selector       = PU_WHITE_BALANCE_TEMPERATURE_CONTROL,
+                .index          = 6,
+                .size           = 2,
+                .flags          = UVC_CONTROL_SET_CUR | UVC_CONTROL_GET_RANGE
+                                | UVC_CONTROL_RESTORE | UVC_CONTROL_AUTO_UPDATE,
+        },
+        {
+                .entity         = UVC_GUID_UVC_PROCESSING,
+                .selector       = PU_WHITE_BALANCE_COMPONENT_AUTO_CONTROL,
+                .index          = 13,
+                .size           = 1,
+                .flags          = UVC_CONTROL_SET_CUR | UVC_CONTROL_GET_CUR
+                                | UVC_CONTROL_GET_DEF | UVC_CONTROL_RESTORE,
+        },
+        {
+                .entity         = UVC_GUID_UVC_PROCESSING,
+                .selector       = PU_WHITE_BALANCE_COMPONENT_CONTROL,
+                .index          = 7,
+                .size           = 4,
+                .flags          = UVC_CONTROL_SET_CUR | UVC_CONTROL_GET_RANGE
+                                | UVC_CONTROL_RESTORE | UVC_CONTROL_AUTO_UPDATE,
+        },
+};
+
+static struct uvc_menu_info power_line_frequency_controls[] = {
+        { 0, "Disabled" },
+        { 1, "50 Hz" },
+        { 2, "60 Hz" },
+};
+
+static struct uvc_menu_info exposure_auto_controls[] = {
+        { 1, "Manual Mode" },
+        { 2, "Auto Mode" },
+        { 4, "Shutter Priority Mode" },
+        { 8, "Aperture Priority Mode" },
+};
+
+static struct uvc_control_mapping uvc_ctrl_mappings[] = {
+        {
+                .id             = V4L2_CID_BRIGHTNESS,
+                .name           = "Brightness",
+                .entity         = UVC_GUID_UVC_PROCESSING,
+                .selector       = PU_BRIGHTNESS_CONTROL,
+                .size           = 16,
+                .offset         = 0,
+                .v4l2_type      = V4L2_CTRL_TYPE_INTEGER,
+                .data_type      = UVC_CTRL_DATA_TYPE_SIGNED,
+        },
+        {
+                .id             = V4L2_CID_CONTRAST,
+                .name           = "Contrast",
+                .entity         = UVC_GUID_UVC_PROCESSING,
+                .selector       = PU_CONTRAST_CONTROL,
+                .size           = 16,
+                .offset         = 0,
+                .v4l2_type      = V4L2_CTRL_TYPE_INTEGER,
+                .data_type      = UVC_CTRL_DATA_TYPE_UNSIGNED,
+        },
+        {
+                .id             = V4L2_CID_HUE,
+                .name           = "Hue",
+                .entity         = UVC_GUID_UVC_PROCESSING,
+                .selector       = PU_HUE_CONTROL,
+                .size           = 16,
+                .offset         = 0,
+                .v4l2_type      = V4L2_CTRL_TYPE_INTEGER,
+                .data_type      = UVC_CTRL_DATA_TYPE_SIGNED,
+        },
+        {
+                .id             = V4L2_CID_SATURATION,
+                .name           = "Saturation",
+                .entity         = UVC_GUID_UVC_PROCESSING,
+                .selector       = PU_SATURATION_CONTROL,
+                .size           = 16,
+                .offset         = 0,
+                .v4l2_type      = V4L2_CTRL_TYPE_INTEGER,
+                .data_type      = UVC_CTRL_DATA_TYPE_UNSIGNED,
+        },
+        {
+                .id             = V4L2_CID_SHARPNESS,
+                .name           = "Sharpness",
+                .entity         = UVC_GUID_UVC_PROCESSING,
+                .selector       = PU_SHARPNESS_CONTROL,
+                .size           = 16,
+                .offset         = 0,
+                .v4l2_type      = V4L2_CTRL_TYPE_INTEGER,
+                .data_type      = UVC_CTRL_DATA_TYPE_UNSIGNED,
+        },
+        {
+                .id             = V4L2_CID_GAMMA,
+                .name           = "Gamma",
+                .entity         = UVC_GUID_UVC_PROCESSING,
+                .selector       = PU_GAMMA_CONTROL,
+                .size           = 16,
+                .offset         = 0,
+                .v4l2_type      = V4L2_CTRL_TYPE_INTEGER,
+                .data_type      = UVC_CTRL_DATA_TYPE_UNSIGNED,
+        },
+        {
+                .id             = V4L2_CID_BACKLIGHT_COMPENSATION,
+                .name           = "Backlight Compensation",
+                .entity         = UVC_GUID_UVC_PROCESSING,
+                .selector       = PU_BACKLIGHT_COMPENSATION_CONTROL,
+                .size           = 16,
+                .offset         = 0,
+                .v4l2_type      = V4L2_CTRL_TYPE_INTEGER,
+                .data_type      = UVC_CTRL_DATA_TYPE_UNSIGNED,
+        },
+        {
+                .id             = V4L2_CID_GAIN,
+                .name           = "Gain",
+                .entity         = UVC_GUID_UVC_PROCESSING,
+                .selector       = PU_GAIN_CONTROL,
+                .size           = 16,
+                .offset         = 0,
+                .v4l2_type      = V4L2_CTRL_TYPE_INTEGER,
+                .data_type      = UVC_CTRL_DATA_TYPE_UNSIGNED,
+        },
+        {
+                .id             = V4L2_CID_POWER_LINE_FREQUENCY,
+                .name           = "Power Line Frequency",
+                .entity         = UVC_GUID_UVC_PROCESSING,
+                .selector       = PU_POWER_LINE_FREQUENCY_CONTROL,
+                .size           = 2,
+                .offset         = 0,
+                .v4l2_type      = V4L2_CTRL_TYPE_MENU,
+                .data_type      = UVC_CTRL_DATA_TYPE_ENUM,
+                .menu_info      = power_line_frequency_controls,
+                .menu_count     = ARRAY_SIZE(power_line_frequency_controls),
+        },
+        {
+                .id             = V4L2_CID_HUE_AUTO,
+                .name           = "Hue, Auto",
+                .entity         = UVC_GUID_UVC_PROCESSING,
+                .selector       = PU_HUE_AUTO_CONTROL,
+                .size           = 1,
+                .offset         = 0,
+                .v4l2_type      = V4L2_CTRL_TYPE_BOOLEAN,
+                .data_type      = UVC_CTRL_DATA_TYPE_BOOLEAN,
+        },
+        {
+                .id             = V4L2_CID_EXPOSURE_AUTO,
+                .name           = "Exposure, Auto",
+                .entity         = UVC_GUID_UVC_CAMERA,
+                .selector       = CT_AE_MODE_CONTROL,
+                .size           = 4,
+                .offset         = 0,
+                .v4l2_type      = V4L2_CTRL_TYPE_MENU,
+                .data_type      = UVC_CTRL_DATA_TYPE_BITMASK,
+                .menu_info      = exposure_auto_controls,
+                .menu_count     = ARRAY_SIZE(exposure_auto_controls),
+        },
+        {
+                .id             = V4L2_CID_EXPOSURE_AUTO_PRIORITY,
+                .name           = "Exposure, Auto Priority",
+                .entity         = UVC_GUID_UVC_CAMERA,
+                .selector       = CT_AE_PRIORITY_CONTROL,
+                .size           = 1,
+                .offset         = 0,
+                .v4l2_type      = V4L2_CTRL_TYPE_BOOLEAN,
+                .data_type      = UVC_CTRL_DATA_TYPE_BOOLEAN,
+        },
+        {
+                .id             = V4L2_CID_EXPOSURE_ABSOLUTE,
+                .name           = "Exposure (Absolute)",
+                .entity         = UVC_GUID_UVC_CAMERA,
+                .selector       = CT_EXPOSURE_TIME_ABSOLUTE_CONTROL,
+                .size           = 32,
+                .offset         = 0,
+                .v4l2_type      = V4L2_CTRL_TYPE_INTEGER,
+                .data_type      = UVC_CTRL_DATA_TYPE_UNSIGNED,
+        },
+        {
+                .id             = V4L2_CID_AUTO_WHITE_BALANCE,
+                .name           = "White Balance Temperature, Auto",
+                .entity         = UVC_GUID_UVC_PROCESSING,
+                .selector       = PU_WHITE_BALANCE_TEMPERATURE_AUTO_CONTROL,
+                .size           = 1,
+                .offset         = 0,
+                .v4l2_type      = V4L2_CTRL_TYPE_BOOLEAN,
+                .data_type      = UVC_CTRL_DATA_TYPE_BOOLEAN,
+        },
+        {
+                .id             = V4L2_CID_WHITE_BALANCE_TEMPERATURE,
+                .name           = "White Balance Temperature",
+                .entity         = UVC_GUID_UVC_PROCESSING,
+                .selector       = PU_WHITE_BALANCE_TEMPERATURE_CONTROL,
+                .size           = 16,
+                .offset         = 0,
+                .v4l2_type      = V4L2_CTRL_TYPE_INTEGER,
+                .data_type      = UVC_CTRL_DATA_TYPE_UNSIGNED,
+        },
+        {
+                .id             = V4L2_CID_AUTO_WHITE_BALANCE,
+                .name           = "White Balance Component, Auto",
+                .entity         = UVC_GUID_UVC_PROCESSING,
+                .selector       = PU_WHITE_BALANCE_COMPONENT_AUTO_CONTROL,
+                .size           = 1,
+                .offset         = 0,
+                .v4l2_type      = V4L2_CTRL_TYPE_BOOLEAN,
+                .data_type      = UVC_CTRL_DATA_TYPE_BOOLEAN,
+        },
+        {
+                .id             = V4L2_CID_BLUE_BALANCE,
+                .name           = "White Balance Blue Component",
+                .entity         = UVC_GUID_UVC_PROCESSING,
+                .selector       = PU_WHITE_BALANCE_COMPONENT_CONTROL,
+                .size           = 16,
+                .offset         = 0,
+                .v4l2_type      = V4L2_CTRL_TYPE_INTEGER,
+                .data_type      = UVC_CTRL_DATA_TYPE_SIGNED,
+        },
+        {
+                .id             = V4L2_CID_RED_BALANCE,
+                .name           = "White Balance Red Component",
+                .entity         = UVC_GUID_UVC_PROCESSING,
+                .selector       = PU_WHITE_BALANCE_COMPONENT_CONTROL,
+                .size           = 16,
+                .offset         = 16,
+                .v4l2_type      = V4L2_CTRL_TYPE_INTEGER,
+                .data_type      = UVC_CTRL_DATA_TYPE_SIGNED,
+        },
+        {
+                .id             = V4L2_CID_FOCUS_ABSOLUTE,
+                .name           = "Focus (absolute)",
+                .entity         = UVC_GUID_UVC_CAMERA,
+                .selector       = CT_FOCUS_ABSOLUTE_CONTROL,
+                .size           = 16,
+                .offset         = 0,
+                .v4l2_type      = V4L2_CTRL_TYPE_INTEGER,
+                .data_type      = UVC_CTRL_DATA_TYPE_UNSIGNED,
+        },
+        {
+                .id             = V4L2_CID_FOCUS_AUTO,
+                .name           = "Focus, Auto",
+                .entity         = UVC_GUID_UVC_CAMERA,
+                .selector       = CT_FOCUS_AUTO_CONTROL,
+                .size           = 1,
+                .offset         = 0,
+                .v4l2_type      = V4L2_CTRL_TYPE_BOOLEAN,
+                .data_type      = UVC_CTRL_DATA_TYPE_BOOLEAN,
+        },
+};
+
+/* ------------------------------------------------------------------------
+ * Utility functions
+ */
+
+static inline __u8 *uvc_ctrl_data(struct uvc_control *ctrl, int id)
+{
+        return ctrl->data + id * ctrl->info->size;
+}
+
+static inline int uvc_get_bit(const __u8 *data, int bit)
+{
+        return (data[bit >> 3] >> (bit & 7)) & 1;
+}
+
+/* Extract the bit string specified by mapping->offset and mapping->size
+ * from the little-endian data stored at 'data' and return the result as
+ * a signed 32bit integer. Sign extension will be performed if the mapping
+ * references a signed data type.
+ */
+static __s32 uvc_get_le_value(const __u8 *data,
+        struct uvc_control_mapping *mapping)
+{
+        int bits = mapping->size;
+        int offset = mapping->offset;
+        __s32 value = 0;
+        __u8 mask;
+
+        data += offset / 8;
+        offset &= 7;
+        mask = ((1LL << bits) - 1) << offset;
+
+        for (; bits > 0; data++) {
+                __u8 byte = *data & mask;
+                value |= offset > 0 ? (byte >> offset) : (byte << (-offset));
+                bits -= 8 - (offset > 0 ? offset : 0);
+                offset -= 8;
+                mask = (1 << bits) - 1;
+        }
+
+        /* Sign-extend the value if needed */
+        if (mapping->data_type == UVC_CTRL_DATA_TYPE_SIGNED)
+                value |= -(value & (1 << (mapping->size - 1)));
+
+        return value;
+}
+
+/* Set the bit string specified by mapping->offset and mapping->size
+ * in the little-endian data stored at 'data' to the value 'value'.
+ */
+static void uvc_set_le_value(__s32 value, __u8 *data,
+        struct uvc_control_mapping *mapping)
+{
+        int bits = mapping->size;
+        int offset = mapping->offset;
+        __u8 mask;
+
+        data += offset / 8;
+        offset &= 7;
+
+        for (; bits > 0; data++) {
+                mask = ((1LL << bits) - 1) << offset;
+                *data = (*data & ~mask) | ((value << offset) & mask);
+                value >>= offset ? offset : 8;
+                bits -= 8 - offset;
+                offset = 0;
+        }
+}
+
+/* ------------------------------------------------------------------------
+ * Terminal and unit management
+ */
+
+static const __u8 uvc_processing_guid[16] = UVC_GUID_UVC_PROCESSING;
+static const __u8 uvc_camera_guid[16] = UVC_GUID_UVC_CAMERA;
+static const __u8 uvc_media_transport_input_guid[16] =
+        UVC_GUID_UVC_MEDIA_TRANSPORT_INPUT;
+
+static int uvc_entity_match_guid(struct uvc_entity *entity, __u8 guid[16])
+{
+        switch (UVC_ENTITY_TYPE(entity)) {
+        case ITT_CAMERA:
+                return memcmp(uvc_camera_guid, guid, 16) == 0;
+
+        case ITT_MEDIA_TRANSPORT_INPUT:
+                return memcmp(uvc_media_transport_input_guid, guid, 16) == 0;
+
+        case VC_PROCESSING_UNIT:
+                return memcmp(uvc_processing_guid, guid, 16) == 0;
+
+        case VC_EXTENSION_UNIT:
+                return memcmp(entity->extension.guidExtensionCode,
+                              guid, 16) == 0;
+
+        default:
+                return 0;
+        }
+}
+
+/* ------------------------------------------------------------------------
+ * UVC Controls
+ */
+
+static void __uvc_find_control(struct uvc_entity *entity, __u32 v4l2_id,
+        struct uvc_control_mapping **mapping, struct uvc_control **control,
+        int next)
+{
+        struct uvc_control *ctrl;
+        struct uvc_control_mapping *map;
+        unsigned int i;
+
+        if (entity == NULL)
+                return;
+
+        for (i = 0; i < entity->ncontrols; ++i) {
+                ctrl = &entity->controls[i];
+                if (ctrl->info == NULL)
+                        continue;
+
+                list_for_each_entry(map, &ctrl->info->mappings, list) {
+                        if ((map->id == v4l2_id) && !next) {
+                                *control = ctrl;
+                                *mapping = map;
+                                return;
+                        }
+
+                        if ((*mapping == NULL || (*mapping)->id > map->id) &&
+                            (map->id > v4l2_id) && next) {
+                                *control = ctrl;
+                                *mapping = map;
+                        }
+                }
+        }
+}
+
+struct uvc_control *uvc_find_control(struct uvc_video_device *video,
+        __u32 v4l2_id, struct uvc_control_mapping **mapping)
+{
+        struct uvc_control *ctrl = NULL;
+        struct uvc_entity *entity;
+        int next = v4l2_id & V4L2_CTRL_FLAG_NEXT_CTRL;
+
+        *mapping = NULL;
+
+        /* Mask the query flags. */
+        v4l2_id &= V4L2_CTRL_ID_MASK;
+
+        /* Find the control. */
+        __uvc_find_control(video->processing, v4l2_id, mapping, &ctrl, next);
+        if (ctrl && !next)
+                return ctrl;
+
+        list_for_each_entry(entity, &video->iterms, chain) {
+                __uvc_find_control(entity, v4l2_id, mapping, &ctrl, next);
+                if (ctrl && !next)
+                        return ctrl;
+        }
+
+        list_for_each_entry(entity, &video->extensions, chain) {
+                __uvc_find_control(entity, v4l2_id, mapping, &ctrl, next);
+                if (ctrl && !next)
+                        return ctrl;
+        }
+
+        if (ctrl == NULL && !next)
+                uvc_trace(UVC_TRACE_CONTROL, "Control 0x%08x not found.\n",
+                                v4l2_id);
+
+        return ctrl;
+}
+
+int uvc_query_v4l2_ctrl(struct uvc_video_device *video,
+        struct v4l2_queryctrl *v4l2_ctrl)
+{
+        struct uvc_control *ctrl;
+        struct uvc_control_mapping *mapping;
+        struct uvc_menu_info *menu;
+        unsigned int i;
+        __u8 data[8];
+        int ret;
+
+        ctrl = uvc_find_control(video, v4l2_ctrl->id, &mapping);
+        if (ctrl == NULL)
+                return -EINVAL;
+
+        v4l2_ctrl->id = mapping->id;
+        v4l2_ctrl->type = mapping->v4l2_type;
+        strncpy(v4l2_ctrl->name, mapping->name, sizeof v4l2_ctrl->name);
+        v4l2_ctrl->flags = 0;
+
+        if (!(ctrl->info->flags & UVC_CONTROL_SET_CUR))
+                v4l2_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+
+        if (ctrl->info->flags & UVC_CONTROL_GET_DEF) {
+                if ((ret = uvc_query_ctrl(video->dev, GET_DEF, ctrl->entity->id,
+                                video->dev->intfnum, ctrl->info->selector,
+                                &data, ctrl->info->size)) < 0)
+                        return ret;
+                v4l2_ctrl->default_value = uvc_get_le_value(data, mapping);
+        }
+
+        if (mapping->v4l2_type == V4L2_CTRL_TYPE_MENU) {
+                v4l2_ctrl->minimum = 0;
+                v4l2_ctrl->maximum = mapping->menu_count - 1;
+                v4l2_ctrl->step = 1;
+
+                menu = mapping->menu_info;
+                for (i = 0; i < mapping->menu_count; ++i, ++menu) {
+                        if (menu->value == v4l2_ctrl->default_value) {
+                                v4l2_ctrl->default_value = i;
+                                break;
+                        }
+                }
+
+                return 0;
+        }
+
+        if (ctrl->info->flags & UVC_CONTROL_GET_MIN) {
+                if ((ret = uvc_query_ctrl(video->dev, GET_MIN, ctrl->entity->id,
+                                video->dev->intfnum, ctrl->info->selector,
+                                &data, ctrl->info->size)) < 0)
+                        return ret;
+                v4l2_ctrl->minimum = uvc_get_le_value(data, mapping);
+        }
+        if (ctrl->info->flags & UVC_CONTROL_GET_MAX) {
+                if ((ret = uvc_query_ctrl(video->dev, GET_MAX, ctrl->entity->id,
+                                video->dev->intfnum, ctrl->info->selector,
+                                &data, ctrl->info->size)) < 0)
+                        return ret;
+                v4l2_ctrl->maximum = uvc_get_le_value(data, mapping);
+        }
+        if (ctrl->info->flags & UVC_CONTROL_GET_RES) {
+                if ((ret = uvc_query_ctrl(video->dev, GET_RES, ctrl->entity->id,
+                                video->dev->intfnum, ctrl->info->selector,
+                                &data, ctrl->info->size)) < 0)
+                        return ret;
+                v4l2_ctrl->step = uvc_get_le_value(data, mapping);
+        }
+
+        return 0;
+}
+
+
+/* --------------------------------------------------------------------------
+ * Control transactions
+ *
+ * To make extended set operations as atomic as the hardware allows, controls
+ * are handled using begin/commit/rollback operations.
+ *
+ * At the beginning of a set request, uvc_ctrl_begin should be called to
+ * initialize the request. This function acquires the control lock.
+ *
+ * When setting a control, the new value is stored in the control data field
+ * at position UVC_CTRL_DATA_CURRENT. The control is then marked as dirty for
+ * later processing. If the UVC and V4L2 control sizes differ, the current
+ * value is loaded from the hardware before storing the new value in the data
+ * field.
+ *
+ * After processing all controls in the transaction, uvc_ctrl_commit or
+ * uvc_ctrl_rollback must be called to apply the pending changes to the
+ * hardware or revert them. When applying changes, all controls marked as
+ * dirty will be modified in the UVC device, and the dirty flag will be
+ * cleared. When reverting controls, the control data field
+ * UVC_CTRL_DATA_CURRENT is reverted to its previous value
+ * (UVC_CTRL_DATA_BACKUP) for all dirty controls. Both functions release the
+ * control lock.
+ */
+int uvc_ctrl_begin(struct uvc_video_device *video)
+{
+        return mutex_lock_interruptible(&video->ctrl_mutex) ? -ERESTARTSYS : 0;
+}
+
+static int uvc_ctrl_commit_entity(struct uvc_device *dev,
+        struct uvc_entity *entity, int rollback)
+{
+        struct uvc_control *ctrl;
+        unsigned int i;
+        int ret;
+
+        if (entity == NULL)
+                return 0;
+
+        for (i = 0; i < entity->ncontrols; ++i) {
+                ctrl = &entity->controls[i];
+                if (ctrl->info == NULL || !ctrl->dirty)
+                        continue;
+
+                if (!rollback)
+                        ret = uvc_query_ctrl(dev, SET_CUR, ctrl->entity->id,
+                                dev->intfnum, ctrl->info->selector,
+                                uvc_ctrl_data(ctrl, UVC_CTRL_DATA_CURRENT),
+                                ctrl->info->size);
+                else
+                        ret = 0;
+
+                if (rollback || ret < 0)
+                        memcpy(uvc_ctrl_data(ctrl, UVC_CTRL_DATA_CURRENT),
+                               uvc_ctrl_data(ctrl, UVC_CTRL_DATA_BACKUP),
+                               ctrl->info->size);
+
+                if ((ctrl->info->flags & UVC_CONTROL_GET_CUR) == 0)
+                        ctrl->loaded = 0;
+
+                ctrl->dirty = 0;
+
+                if (ret < 0)
+                        return ret;
+        }
+
+        return 0;
+}
+
+int __uvc_ctrl_commit(struct uvc_video_device *video, int rollback)
+{
+        struct uvc_entity *entity;
+        int ret = 0;
+
+        /* Find the control. */
+        ret = uvc_ctrl_commit_entity(video->dev, video->processing, rollback);
+        if (ret < 0)
+                goto done;
+
+        list_for_each_entry(entity, &video->iterms, chain) {
+                ret = uvc_ctrl_commit_entity(video->dev, entity, rollback);
+                if (ret < 0)
+                        goto done;
+        }
+
+        list_for_each_entry(entity, &video->extensions, chain) {
+                ret = uvc_ctrl_commit_entity(video->dev, entity, rollback);
+                if (ret < 0)
+                        goto done;
+        }
+
+done:
+        mutex_unlock(&video->ctrl_mutex);
+        return ret;
+}
+
+int uvc_ctrl_get(struct uvc_video_device *video,
+        struct v4l2_ext_control *xctrl)
+{
+        struct uvc_control *ctrl;
+        struct uvc_control_mapping *mapping;
+        struct uvc_menu_info *menu;
+        unsigned int i;
+        int ret;
+
+        ctrl = uvc_find_control(video, xctrl->id, &mapping);
+        if (ctrl == NULL || (ctrl->info->flags & UVC_CONTROL_GET_CUR) == 0)
+                return -EINVAL;
+
+        if (!ctrl->loaded) {
+                ret = uvc_query_ctrl(video->dev, GET_CUR, ctrl->entity->id,
+                                video->dev->intfnum, ctrl->info->selector,
+                                uvc_ctrl_data(ctrl, UVC_CTRL_DATA_CURRENT),
+                                ctrl->info->size);
+                if (ret < 0)
+                        return ret;
+
+                if ((ctrl->info->flags & UVC_CONTROL_AUTO_UPDATE) == 0)
+                        ctrl->loaded = 1;
+        }
+
+        xctrl->value = uvc_get_le_value(
+                uvc_ctrl_data(ctrl, UVC_CTRL_DATA_CURRENT), mapping);
+
+        if (mapping->v4l2_type == V4L2_CTRL_TYPE_MENU) {
+                menu = mapping->menu_info;
+                for (i = 0; i < mapping->menu_count; ++i, ++menu) {
+                        if (menu->value == xctrl->value) {
+                                xctrl->value = i;
+                                break;
+                        }
+                }
+        }
+
+        return 0;
+}
+
+int uvc_ctrl_set(struct uvc_video_device *video,
+        struct v4l2_ext_control *xctrl)
+{
+        struct uvc_control *ctrl;
+        struct uvc_control_mapping *mapping;
+        s32 value = xctrl->value;
+        int ret;
+
+        ctrl = uvc_find_control(video, xctrl->id, &mapping);
+        if (ctrl == NULL || (ctrl->info->flags & UVC_CONTROL_SET_CUR) == 0)
+                return -EINVAL;
+
+        if (mapping->v4l2_type == V4L2_CTRL_TYPE_MENU) {
+                if (value < 0 || value >= mapping->menu_count)
+                        return -EINVAL;
+                value = mapping->menu_info[value].value;
+        }
+
+        if (!ctrl->loaded && (ctrl->info->size * 8) != mapping->size) {
+                if ((ctrl->info->flags & UVC_CONTROL_GET_CUR) == 0) {
+                        memset(uvc_ctrl_data(ctrl, UVC_CTRL_DATA_CURRENT),
+                                0, ctrl->info->size);
+                } else {
+                        ret = uvc_query_ctrl(video->dev, GET_CUR,
+                                ctrl->entity->id, video->dev->intfnum,
+                                ctrl->info->selector,
+                                uvc_ctrl_data(ctrl, UVC_CTRL_DATA_CURRENT),
+                                ctrl->info->size);
+                        if (ret < 0)
+                                return ret;
+                }
+
+                if ((ctrl->info->flags & UVC_CONTROL_AUTO_UPDATE) == 0)
+                        ctrl->loaded = 1;
+        }
+
+        if (!ctrl->dirty) {
+                memcpy(uvc_ctrl_data(ctrl, UVC_CTRL_DATA_BACKUP),
+                       uvc_ctrl_data(ctrl, UVC_CTRL_DATA_CURRENT),
+                       ctrl->info->size);
+        }
+
+        uvc_set_le_value(value,
+                uvc_ctrl_data(ctrl, UVC_CTRL_DATA_CURRENT), mapping);
+
+        ctrl->dirty = 1;
+        ctrl->modified = 1;
+        return 0;
+}
+
+/* --------------------------------------------------------------------------
+ * Dynamic controls
+ */
+
+int uvc_xu_ctrl_query(struct uvc_video_device *video,
+        struct uvc_xu_control *xctrl, int set)
+{
+        struct uvc_entity *entity;
+        struct uvc_control *ctrl = NULL;
+        unsigned int i, found = 0;
+        __u8 *data;
+        int ret;
+
+        /* Find the extension unit. */
+        list_for_each_entry(entity, &video->extensions, chain) {
+                if (entity->id == xctrl->unit)
+                        break;
+        }
+
+        if (entity->id != xctrl->unit) {
+                uvc_trace(UVC_TRACE_CONTROL, "Extension unit %u not found.\n",
+                        xctrl->unit);
+                return -EINVAL;
+        }
+
+        /* Find the control. */
+        for (i = 0; i < entity->ncontrols; ++i) {
+                ctrl = &entity->controls[i];
+                if (ctrl->info == NULL)
+                        continue;
+
+                if (ctrl->info->selector == xctrl->selector) {
+                        found = 1;
+                        break;
+                }
+        }
+
+        if (!found) {
+                uvc_trace(UVC_TRACE_CONTROL,
+                        "Control " UVC_GUID_FORMAT "/%u not found.\n",
+                        UVC_GUID_ARGS(entity->extension.guidExtensionCode),
+                        xctrl->selector);
+                return -EINVAL;
+        }
+
+        /* Validate control data size. */
+        if (ctrl->info->size != xctrl->size)
+                return -EINVAL;
+
+        if ((set && !(ctrl->info->flags & UVC_CONTROL_SET_CUR)) ||
+            (!set && !(ctrl->info->flags & UVC_CONTROL_GET_CUR)))
+                return -EINVAL;
+
+        if (mutex_lock_interruptible(&video->ctrl_mutex))
+                return -ERESTARTSYS;
+
+        memcpy(uvc_ctrl_data(ctrl, UVC_CTRL_DATA_BACKUP),
+               uvc_ctrl_data(ctrl, UVC_CTRL_DATA_CURRENT),
+               xctrl->size);
+        data = uvc_ctrl_data(ctrl, UVC_CTRL_DATA_CURRENT);
+
+        if (set && copy_from_user(data, xctrl->data, xctrl->size)) {
+                ret = -EFAULT;
+                goto out;
+        }
+
+        ret = uvc_query_ctrl(video->dev, set ? SET_CUR : GET_CUR, xctrl->unit,
+                             video->dev->intfnum, xctrl->selector, data,
+                             xctrl->size);
+        if (ret < 0)
+                goto out;
+
+        if (!set && copy_to_user(xctrl->data, data, xctrl->size)) {
+                ret = -EFAULT;
+                goto out;
+        }
+
+out:
+        if (ret)
+                memcpy(uvc_ctrl_data(ctrl, UVC_CTRL_DATA_CURRENT),
+                       uvc_ctrl_data(ctrl, UVC_CTRL_DATA_BACKUP),
+                       xctrl->size);
+
+        mutex_unlock(&video->ctrl_mutex);
+        return ret;
+}
+
+/* --------------------------------------------------------------------------
+ * Suspend/resume
+ */
+
+/*
+ * Restore control values after resume, skipping controls that haven't been
+ * changed.
+ *
+ * TODO
+ * - Don't restore modified controls that are back to their default value.
+ * - Handle restore order (Auto-Exposure Mode should be restored before
+ *   Exposure Time).
+ */
+int uvc_ctrl_resume_device(struct uvc_device *dev)
+{
+        struct uvc_control *ctrl;
+        struct uvc_entity *entity;
+        unsigned int i;
+        int ret;
+
+        /* Walk the entities list and restore controls when possible. */
+        list_for_each_entry(entity, &dev->entities, list) {
+
+                for (i = 0; i < entity->ncontrols; ++i) {
+                        ctrl = &entity->controls[i];
+
+                        if (ctrl->info == NULL || !ctrl->modified ||
+                            (ctrl->info->flags & UVC_CONTROL_RESTORE) == 0)
+                                continue;
+
+                        printk(KERN_INFO "restoring control " UVC_GUID_FORMAT
+                                "/%u/%u\n", UVC_GUID_ARGS(ctrl->info->entity),
+                                ctrl->info->index, ctrl->info->selector);
+                        ctrl->dirty = 1;
+                }
+
+                ret = uvc_ctrl_commit_entity(dev, entity, 0);
+                if (ret < 0)
+                        return ret;
+        }
+
+        return 0;
+}
+
+/* --------------------------------------------------------------------------
+ * Control and mapping handling
+ */
+
+static void uvc_ctrl_add_ctrl(struct uvc_device *dev,
+        struct uvc_control_info *info)
+{
+        struct uvc_entity *entity;
+        struct uvc_control *ctrl = NULL;
+        int ret, found = 0;
+        unsigned int i;
+
+        list_for_each_entry(entity, &dev->entities, list) {
+                if (!uvc_entity_match_guid(entity, info->entity))
+                        continue;
+
+                for (i = 0; i < entity->ncontrols; ++i) {
+                        ctrl = &entity->controls[i];
+                        if (ctrl->index == info->index) {
+                                found = 1;
+                                break;
+                        }
+                }
+
+                if (found)
+                        break;
+        }
+
+        if (!found)
+                return;
+
+        if (UVC_ENTITY_TYPE(entity) == VC_EXTENSION_UNIT) {
+                /* Check if the device control information and length match
+                 * the user supplied information.
+                 */
+                __u32 flags;
+                __le16 size;
+                __u8 inf;
+
+                if ((ret = uvc_query_ctrl(dev, GET_LEN, ctrl->entity->id,
+                        dev->intfnum, info->selector, (__u8 *)&size, 2)) < 0) {
+                        uvc_trace(UVC_TRACE_CONTROL, "GET_LEN failed on "
+                                "control " UVC_GUID_FORMAT "/%u (%d).\n",
+                                UVC_GUID_ARGS(info->entity), info->selector,
+                                ret);
+                        return;
+                }
+
+                if (info->size != le16_to_cpu(size)) {
+                        uvc_trace(UVC_TRACE_CONTROL, "Control " UVC_GUID_FORMAT
+                                "/%u size doesn't match user supplied "
+                                "value.\n", UVC_GUID_ARGS(info->entity),
+                                info->selector);
+                        return;
+                }
+
+                if ((ret = uvc_query_ctrl(dev, GET_INFO, ctrl->entity->id,
+                        dev->intfnum, info->selector, &inf, 1)) < 0) {
+                        uvc_trace(UVC_TRACE_CONTROL, "GET_INFO failed on "
+                                "control " UVC_GUID_FORMAT "/%u (%d).\n",
+                                UVC_GUID_ARGS(info->entity), info->selector,
+                                ret);
+                        return;
+                }
+
+                flags = info->flags;
+                if (((flags & UVC_CONTROL_GET_CUR) && !(inf & (1 << 0))) ||
+                    ((flags & UVC_CONTROL_SET_CUR) && !(inf & (1 << 1)))) {
+                        uvc_trace(UVC_TRACE_CONTROL, "Control "
+                                UVC_GUID_FORMAT "/%u flags don't match "
+                                "supported operations.\n",
+                                UVC_GUID_ARGS(info->entity), info->selector);
+                        return;
+                }
+        }
+
+        ctrl->info = info;
+        ctrl->data = kmalloc(ctrl->info->size * UVC_CTRL_NDATA, GFP_KERNEL);
+        uvc_trace(UVC_TRACE_CONTROL, "Added control " UVC_GUID_FORMAT "/%u "
+                "to device %s entity %u\n", UVC_GUID_ARGS(ctrl->info->entity),
+                ctrl->info->selector, dev->udev->devpath, entity->id);
+}
+
+/*
+ * Add an item to the UVC control information list, and instantiate a control
+ * structure for each device that supports the control.
+ */
+int uvc_ctrl_add_info(struct uvc_control_info *info)
+{
+        struct uvc_control_info *ctrl;
+        struct uvc_device *dev;
+        int ret = 0;
+
+        /* Find matching controls by walking the devices, entities and
+         * controls list.
+         */
+        mutex_lock(&uvc_driver.ctrl_mutex);
+
+        /* First check if the list contains a control matching the new one.
+         * Bail out if it does.
+         */
+        list_for_each_entry(ctrl, &uvc_driver.controls, list) {
+                if (memcmp(ctrl->entity, info->entity, 16))
+                        continue;
+
+                if (ctrl->selector == info->selector) {
+                        uvc_trace(UVC_TRACE_CONTROL, "Control "
+                                UVC_GUID_FORMAT "/%u is already defined.\n",
+                                UVC_GUID_ARGS(info->entity), info->selector);
+                        ret = -EEXIST;
+                        goto end;
+                }
+                if (ctrl->index == info->index) {
+                        uvc_trace(UVC_TRACE_CONTROL, "Control "
+                                UVC_GUID_FORMAT "/%u would overwrite index "
+                                "%d.\n", UVC_GUID_ARGS(info->entity),
+                                info->selector, info->index);
+                        ret = -EEXIST;
+                        goto end;
+                }
+        }
+
+        list_for_each_entry(dev, &uvc_driver.devices, list)
+                uvc_ctrl_add_ctrl(dev, info);
+
+        INIT_LIST_HEAD(&info->mappings);
+        list_add_tail(&info->list, &uvc_driver.controls);
+end:
+        mutex_unlock(&uvc_driver.ctrl_mutex);
+        return ret;
+}
+
+int uvc_ctrl_add_mapping(struct uvc_control_mapping *mapping)
+{
+        struct uvc_control_info *info;
+        struct uvc_control_mapping *map;
+        int ret = -EINVAL;
+
+        if (mapping->id & ~V4L2_CTRL_ID_MASK) {
+                uvc_trace(UVC_TRACE_CONTROL, "Can't add mapping '%s' with "
+                        "invalid control id 0x%08x\n", mapping->name,
+                        mapping->id);
+                return -EINVAL;
+        }
+
+        mutex_lock(&uvc_driver.ctrl_mutex);
+        list_for_each_entry(info, &uvc_driver.controls, list) {
+                if (memcmp(info->entity, mapping->entity, 16) ||
+                        info->selector != mapping->selector)
+                        continue;
+
+                if (info->size * 8 < mapping->size + mapping->offset) {
+                        uvc_trace(UVC_TRACE_CONTROL, "Mapping '%s' would "
+                                "overflow control " UVC_GUID_FORMAT "/%u\n",
+                                mapping->name, UVC_GUID_ARGS(info->entity),
+                                info->selector);
+                        ret = -EOVERFLOW;
+                        goto end;
+                }
+
+                /* Check if the list contains a mapping matching the new one.
+                 * Bail out if it does.
+                 */
+                list_for_each_entry(map, &info->mappings, list) {
+                        if (map->id == mapping->id) {
+                                uvc_trace(UVC_TRACE_CONTROL, "Mapping '%s' is "
+                                        "already defined.\n", mapping->name);
+                                ret = -EEXIST;
+                                goto end;
+                        }
+                }
+
+                mapping->ctrl = info;
+                list_add_tail(&mapping->list, &info->mappings);
+                uvc_trace(UVC_TRACE_CONTROL, "Adding mapping %s to control "
+                        UVC_GUID_FORMAT "/%u.\n", mapping->name,
+                        UVC_GUID_ARGS(info->entity), info->selector);
+
+                ret = 0;
+                break;
+        }
+end:
+        mutex_unlock(&uvc_driver.ctrl_mutex);
+        return ret;
+}
+
+/*
+ * Initialize device controls.
+ */
+int uvc_ctrl_init_device(struct uvc_device *dev)
+{
+        struct uvc_control_info *info;
+        struct uvc_control *ctrl;
+        struct uvc_entity *entity;
+        unsigned int i;
+
+        /* Walk the entities list and instantiate controls */
+        list_for_each_entry(entity, &dev->entities, list) {
+                unsigned int bControlSize = 0, ncontrols = 0;
+                __u8 *bmControls = NULL;
+
+                if (UVC_ENTITY_TYPE(entity) == VC_EXTENSION_UNIT) {
+                        bmControls = entity->extension.bmControls;
+                        bControlSize = entity->extension.bControlSize;
+                } else if (UVC_ENTITY_TYPE(entity) == VC_PROCESSING_UNIT) {
+                        bmControls = entity->processing.bmControls;
+                        bControlSize = entity->processing.bControlSize;
+                } else if (UVC_ENTITY_TYPE(entity) == ITT_CAMERA) {
+                        bmControls = entity->camera.bmControls;
+                        bControlSize = entity->camera.bControlSize;
+                }
+
+                for (i = 0; i < bControlSize; ++i)
+                        ncontrols += hweight8(bmControls[i]);
+
+                if (ncontrols == 0)
+                        continue;
+
+                entity->controls = kzalloc(ncontrols*sizeof *ctrl, GFP_KERNEL);
+                if (entity->controls == NULL)
+                        return -ENOMEM;
+
+                entity->ncontrols = ncontrols;
+
+                ctrl = entity->controls;
+                for (i = 0; i < bControlSize * 8; ++i) {
+                        if (uvc_get_bit(bmControls, i) == 0)
+                                continue;
+
+                        ctrl->entity = entity;
+                        ctrl->index = i;
+                        ctrl++;
+                }
+        }
+
+        /* Walk the controls info list and associate them with the device
+         * controls, then add the device to the global device list. This has
+         * to be done while holding the controls lock, to make sure
+         * uvc_ctrl_add_info() will not get called in-between.
+         */
+        mutex_lock(&uvc_driver.ctrl_mutex);
+        list_for_each_entry(info, &uvc_driver.controls, list)
+                uvc_ctrl_add_ctrl(dev, info);
+
+        list_add_tail(&dev->list, &uvc_driver.devices);
+        mutex_unlock(&uvc_driver.ctrl_mutex);
+
+        return 0;
+}
+
+/*
+ * Cleanup device controls.
+ */
+void uvc_ctrl_cleanup_device(struct uvc_device *dev)
+{
+        struct uvc_entity *entity;
+        unsigned int i;
+
+        /* Remove the device from the global devices list */
+        mutex_lock(&uvc_driver.ctrl_mutex);
+        if (dev->list.next != NULL)
+                list_del(&dev->list);
+        mutex_unlock(&uvc_driver.ctrl_mutex);
+
+        list_for_each_entry(entity, &dev->entities, list) {
+                for (i = 0; i < entity->ncontrols; ++i)
+                        kfree(entity->controls[i].data);
+
+                kfree(entity->controls);
+        }
+}
+
+void uvc_ctrl_init(void)
+{
+        struct uvc_control_info *ctrl = uvc_ctrls;
+        struct uvc_control_info *cend = ctrl + ARRAY_SIZE(uvc_ctrls);
+        struct uvc_control_mapping *mapping = uvc_ctrl_mappings;
+        struct uvc_control_mapping *mend =
+                mapping + ARRAY_SIZE(uvc_ctrl_mappings);
+
+        for (; ctrl < cend; ++ctrl)
+                uvc_ctrl_add_info(ctrl);
+
+        for (; mapping < mend; ++mapping)
+                uvc_ctrl_add_mapping(mapping);
+}
diff --git a/drivers/media/video/uvc/uvc_driver.c b/drivers/media/video/uvc/uvc_driver.c
new file mode 100644
index 000000000000..60ced589f898
--- /dev/null
+++ b/drivers/media/video/uvc/uvc_driver.c
@@ -0,0 +1,1955 @@
+/*
+ *      uvc_driver.c  --  USB Video Class driver
+ *
+ *      Copyright (C) 2005-2008
+ *          Laurent Pinchart (laurent.pinchart@skynet.be)
+ *
+ *      This program is free software; you can redistribute it and/or modify
+ *      it under the terms of the GNU General Public License as published by
+ *      the Free Software Foundation; either version 2 of the License, or
+ *      (at your option) any later version.
+ *
+ */
+
+/*
+ * This driver aims to support video input devices compliant with the 'USB
+ * Video Class' specification.
+ *
+ * The driver doesn't support the deprecated v4l1 interface. It implements the
+ * mmap capture method only, and doesn't do any image format conversion in
+ * software. If your user-space application doesn't support YUYV or MJPEG, fix
+ * it :-). Please note that the MJPEG data have been stripped from their
+ * Huffman tables (DHT marker), you will need to add it back if your JPEG
+ * codec can't handle MJPEG data.
+ */
+
+#include <linux/kernel.h>
+#include <linux/version.h>
+#include <linux/list.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+#include <linux/videodev2.h>
+#include <linux/vmalloc.h>
+#include <linux/wait.h>
+#include <asm/atomic.h>
+
+#include <media/v4l2-common.h>
+
+#include "uvcvideo.h"
+
+#define DRIVER_AUTHOR           "Laurent Pinchart <laurent.pinchart@skynet.be>"
+#define DRIVER_DESC             "USB Video Class driver"
+#ifndef DRIVER_VERSION
+#define DRIVER_VERSION          "v0.1.0"
+#endif
+
+static unsigned int uvc_quirks_param;
+unsigned int uvc_trace_param;
+
+/* ------------------------------------------------------------------------
+ * Control, formats, ...
+ */
+
+static struct uvc_format_desc uvc_fmts[] = {
+        {
+                .name           = "YUV 4:2:2 (YUYV)",
+                .guid           = UVC_GUID_FORMAT_YUY2,
+                .fcc            = V4L2_PIX_FMT_YUYV,
+        },
+        {
+                .name           = "YUV 4:2:0 (NV12)",
+                .guid           = UVC_GUID_FORMAT_NV12,
+                .fcc            = V4L2_PIX_FMT_NV12,
+        },
+        {
+                .name           = "MJPEG",
+                .guid           = UVC_GUID_FORMAT_MJPEG,
+                .fcc            = V4L2_PIX_FMT_MJPEG,
+        },
+        {
+                .name           = "YVU 4:2:0 (YV12)",
+                .guid           = UVC_GUID_FORMAT_YV12,
+                .fcc            = V4L2_PIX_FMT_YVU420,
+        },
+        {
+                .name           = "YUV 4:2:0 (I420)",
+                .guid           = UVC_GUID_FORMAT_I420,
+                .fcc            = V4L2_PIX_FMT_YUV420,
+        },
+        {
+                .name           = "YUV 4:2:2 (UYVY)",
+                .guid           = UVC_GUID_FORMAT_UYVY,
+                .fcc            = V4L2_PIX_FMT_UYVY,
+        },
+        {
+                .name           = "Greyscale",
+                .guid           = UVC_GUID_FORMAT_Y800,
+                .fcc            = V4L2_PIX_FMT_GREY,
+        },
+        {
+                .name           = "RGB Bayer",
+                .guid           = UVC_GUID_FORMAT_BY8,
+                .fcc            = V4L2_PIX_FMT_SBGGR8,
+        },
+};
+
+/* ------------------------------------------------------------------------
+ * Utility functions
+ */
+
+struct usb_host_endpoint *uvc_find_endpoint(struct usb_host_interface *alts,
+                __u8 epaddr)
+{
+        struct usb_host_endpoint *ep;
+        unsigned int i;
+
+        for (i = 0; i < alts->desc.bNumEndpoints; ++i) {
+                ep = &alts->endpoint[i];
+                if (ep->desc.bEndpointAddress == epaddr)
+                        return ep;
+        }
+
+        return NULL;
+}
+
+static struct uvc_format_desc *uvc_format_by_guid(const __u8 guid[16])
+{
+        unsigned int len = ARRAY_SIZE(uvc_fmts);
+        unsigned int i;
+
+        for (i = 0; i < len; ++i) {
+                if (memcmp(guid, uvc_fmts[i].guid, 16) == 0)
+                        return &uvc_fmts[i];
+        }
+
+        return NULL;
+}
+
+static __u32 uvc_colorspace(const __u8 primaries)
+{
+        static const __u8 colorprimaries[] = {
+                0,
+                V4L2_COLORSPACE_SRGB,
+                V4L2_COLORSPACE_470_SYSTEM_M,
+                V4L2_COLORSPACE_470_SYSTEM_BG,
+                V4L2_COLORSPACE_SMPTE170M,
+                V4L2_COLORSPACE_SMPTE240M,
+        };
+
+        if (primaries < ARRAY_SIZE(colorprimaries))
+                return colorprimaries[primaries];
+
+        return 0;
+}
+
+/* Simplify a fraction using a simple continued fraction decomposition. The
+ * idea here is to convert fractions such as 333333/10000000 to 1/30 using
+ * 32 bit arithmetic only. The algorithm is not perfect and relies upon two
+ * arbitrary parameters to remove non-significative terms from the simple
+ * continued fraction decomposition. Using 8 and 333 for n_terms and threshold
+ * respectively seems to give nice results.
+ */
+void uvc_simplify_fraction(uint32_t *numerator, uint32_t *denominator,
+                unsigned int n_terms, unsigned int threshold)
+{
+        uint32_t *an;
+        uint32_t x, y, r;
+        unsigned int i, n;
+
+        an = kmalloc(n_terms * sizeof *an, GFP_KERNEL);
+        if (an == NULL)
+                return;
+
+        /* Convert the fraction to a simple continued fraction. See
+         * http://mathforum.org/dr.math/faq/faq.fractions.html
+         * Stop if the current term is bigger than or equal to the given
+         * threshold.
+         */
+        x = *numerator;
+        y = *denominator;
+
+        for (n = 0; n < n_terms && y != 0; ++n) {
+                an[n] = x / y;
+                if (an[n] >= threshold) {
+                        if (n < 2)
+                                n++;
+                        break;
+                }
+
+                r = x - an[n] * y;
+                x = y;
+                y = r;
+        }
+
+        /* Expand the simple continued fraction back to an integer fraction. */
+        x = 0;
+        y = 1;
+
+        for (i = n; i > 0; --i) {
+                r = y;
+                y = an[i-1] * y + x;
+                x = r;
+        }
+
+        *numerator = y;
+        *denominator = x;
+        kfree(an);
+}
+
+/* Convert a fraction to a frame interval in 100ns multiples. The idea here is
+ * to compute numerator / denominator * 10000000 using 32 bit fixed point
+ * arithmetic only.
+ */
+uint32_t uvc_fraction_to_interval(uint32_t numerator, uint32_t denominator)
+{
+        uint32_t multiplier;
+
+        /* Saturate the result if the operation would overflow. */
+        if (denominator == 0 ||
+            numerator/denominator >= ((uint32_t)-1)/10000000)
+                return (uint32_t)-1;
+
+        /* Divide both the denominator and the multiplier by two until
+         * numerator * multiplier doesn't overflow. If anyone knows a better
+         * algorithm please let me know.
+         */
+        multiplier = 10000000;
+        while (numerator > ((uint32_t)-1)/multiplier) {
+                multiplier /= 2;
+                denominator /= 2;
+        }
+
+        return denominator ? numerator * multiplier / denominator : 0;
+}
+
+/* ------------------------------------------------------------------------
+ * Terminal and unit management
+ */
+
+static struct uvc_entity *uvc_entity_by_id(struct uvc_device *dev, int id)
+{
+        struct uvc_entity *entity;
+
+        list_for_each_entry(entity, &dev->entities, list) {
+                if (entity->id == id)
+                        return entity;
+        }
+
+        return NULL;
+}
+
+static struct uvc_entity *uvc_entity_by_reference(struct uvc_device *dev,
+        int id, struct uvc_entity *entity)
+{
+        unsigned int i;
+
+        if (entity == NULL)
+                entity = list_entry(&dev->entities, struct uvc_entity, list);
+
+        list_for_each_entry_continue(entity, &dev->entities, list) {
+                switch (UVC_ENTITY_TYPE(entity)) {
+                case TT_STREAMING:
+                        if (entity->output.bSourceID == id)
+                                return entity;
+                        break;
+
+                case VC_PROCESSING_UNIT:
+                        if (entity->processing.bSourceID == id)
+                                return entity;
+                        break;
+
+                case VC_SELECTOR_UNIT:
+                        for (i = 0; i < entity->selector.bNrInPins; ++i)
+                                if (entity->selector.baSourceID[i] == id)
+                                        return entity;
+                        break;
+
+                case VC_EXTENSION_UNIT:
+                        for (i = 0; i < entity->extension.bNrInPins; ++i)
+                                if (entity->extension.baSourceID[i] == id)
+                                        return entity;
+                        break;
+                }
+        }
+
+        return NULL;
+}
+
+/* ------------------------------------------------------------------------
+ * Descriptors handling
+ */
+
+static int uvc_parse_format(struct uvc_device *dev,
+        struct uvc_streaming *streaming, struct uvc_format *format,
+        __u32 **intervals, unsigned char *buffer, int buflen)
+{
+        struct usb_interface *intf = streaming->intf;
+        struct usb_host_interface *alts = intf->cur_altsetting;
+        struct uvc_format_desc *fmtdesc;
+        struct uvc_frame *frame;
+        const unsigned char *start = buffer;
+        unsigned int interval;
+        unsigned int i, n;
+        __u8 ftype;
+
+        format->type = buffer[2];
+        format->index = buffer[3];
+
+        switch (buffer[2]) {
+        case VS_FORMAT_UNCOMPRESSED:
+        case VS_FORMAT_FRAME_BASED:
+                if (buflen < 27) {
+                        uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming"
+                               "interface %d FORMAT error\n",
+                               dev->udev->devnum,
+                               alts->desc.bInterfaceNumber);
+                        return -EINVAL;
+                }
+
+                /* Find the format descriptor from its GUID. */
+                fmtdesc = uvc_format_by_guid(&buffer[5]);
+
+                if (fmtdesc != NULL) {
+                        strncpy(format->name, fmtdesc->name,
+                                sizeof format->name);
+                        format->fcc = fmtdesc->fcc;
+                } else {
+                        uvc_printk(KERN_INFO, "Unknown video format "
+                                UVC_GUID_FORMAT "\n",
+                                UVC_GUID_ARGS(&buffer[5]));
+                        snprintf(format->name, sizeof format->name,
+                                UVC_GUID_FORMAT, UVC_GUID_ARGS(&buffer[5]));
+                        format->fcc = 0;
+                }
+
+                format->bpp = buffer[21];
+                if (buffer[2] == VS_FORMAT_UNCOMPRESSED) {
+                        ftype = VS_FRAME_UNCOMPRESSED;
+                } else {
+                        ftype = VS_FRAME_FRAME_BASED;
+                        if (buffer[27])
+                                format->flags = UVC_FMT_FLAG_COMPRESSED;
+                }
+                break;
+
+        case VS_FORMAT_MJPEG:
+                if (buflen < 11) {
+                        uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming"
+                               "interface %d FORMAT error\n",
+                               dev->udev->devnum,
+                               alts->desc.bInterfaceNumber);
+                        return -EINVAL;
+                }
+
+                strncpy(format->name, "MJPEG", sizeof format->name);
+                format->fcc = V4L2_PIX_FMT_MJPEG;
+                format->flags = UVC_FMT_FLAG_COMPRESSED;
+                format->bpp = 0;
+                ftype = VS_FRAME_MJPEG;
+                break;
+
+        case VS_FORMAT_DV:
+                if (buflen < 9) {
+                        uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming"
+                               "interface %d FORMAT error\n",
+                               dev->udev->devnum,
+                               alts->desc.bInterfaceNumber);
+                        return -EINVAL;
+                }
+
+                switch (buffer[8] & 0x7f) {
+                case 0:
+                        strncpy(format->name, "SD-DV", sizeof format->name);
+                        break;
+                case 1:
+                        strncpy(format->name, "SDL-DV", sizeof format->name);
+                        break;
+                case 2:
+                        strncpy(format->name, "HD-DV", sizeof format->name);
+                        break;
+                default:
+                        uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming"
+                               "interface %d: unknown DV format %u\n",
+                               dev->udev->devnum,
+                               alts->desc.bInterfaceNumber, buffer[8]);
+                        return -EINVAL;
+                }
+
+                strncat(format->name, buffer[8] & (1 << 7) ? " 60Hz" : " 50Hz",
+                        sizeof format->name);
+
+                format->fcc = V4L2_PIX_FMT_DV;
+                format->flags = UVC_FMT_FLAG_COMPRESSED | UVC_FMT_FLAG_STREAM;
+                format->bpp = 0;
+                ftype = 0;
+
+                /* Create a dummy frame descriptor. */
+                frame = &format->frame[0];
+                memset(&format->frame[0], 0, sizeof format->frame[0]);
+                frame->bFrameIntervalType = 1;
+                frame->dwDefaultFrameInterval = 1;
+                frame->dwFrameInterval = *intervals;
+                *(*intervals)++ = 1;
+                format->nframes = 1;
+                break;
+
+        case VS_FORMAT_MPEG2TS:
+        case VS_FORMAT_STREAM_BASED:
+                /* Not supported yet. */
+        default:
+                uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming"
+                       "interface %d unsupported format %u\n",
+                       dev->udev->devnum, alts->desc.bInterfaceNumber,
+                       buffer[2]);
+                return -EINVAL;
+        }
+
+        uvc_trace(UVC_TRACE_DESCR, "Found format %s.\n", format->name);
+
+        buflen -= buffer[0];
+        buffer += buffer[0];
+
+        /* Parse the frame descriptors. Only uncompressed, MJPEG and frame
+         * based formats have frame descriptors.
+         */
+        while (buflen > 2 && buffer[2] == ftype) {
+                frame = &format->frame[format->nframes];
+
+                if (ftype != VS_FRAME_FRAME_BASED)
+                        n = buflen > 25 ? buffer[25] : 0;
+                else
+                        n = buflen > 21 ? buffer[21] : 0;
+
+                n = n ? n : 3;
+
+                if (buflen < 26 + 4*n) {
+                        uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming"
+                               "interface %d FRAME error\n", dev->udev->devnum,
+                               alts->desc.bInterfaceNumber);
+                        return -EINVAL;
+                }
+
+                frame->bFrameIndex = buffer[3];
+                frame->bmCapabilities = buffer[4];
+                frame->wWidth = le16_to_cpup((__le16 *)&buffer[5]);
+                frame->wHeight = le16_to_cpup((__le16 *)&buffer[7]);
+                frame->dwMinBitRate = le32_to_cpup((__le32 *)&buffer[9]);
+                frame->dwMaxBitRate = le32_to_cpup((__le32 *)&buffer[13]);
+                if (ftype != VS_FRAME_FRAME_BASED) {
+                        frame->dwMaxVideoFrameBufferSize =
+                                le32_to_cpup((__le32 *)&buffer[17]);
+                        frame->dwDefaultFrameInterval =
+                                le32_to_cpup((__le32 *)&buffer[21]);
+                        frame->bFrameIntervalType = buffer[25];
+                } else {
+                        frame->dwMaxVideoFrameBufferSize = 0;
+                        frame->dwDefaultFrameInterval =
+                                le32_to_cpup((__le32 *)&buffer[17]);
+                        frame->bFrameIntervalType = buffer[21];
+                }
+                frame->dwFrameInterval = *intervals;
+
+                /* Several UVC chipsets screw up dwMaxVideoFrameBufferSize
+                 * completely. Observed behaviours range from setting the
+                 * value to 1.1x the actual frame size of hardwiring the
+                 * 16 low bits to 0. This results in a higher than necessary
+                 * memory usage as well as a wrong image size information. For
+                 * uncompressed formats this can be fixed by computing the
+                 * value from the frame size.
+                 */
+                if (!(format->flags & UVC_FMT_FLAG_COMPRESSED))
+                        frame->dwMaxVideoFrameBufferSize = format->bpp
+                                * frame->wWidth * frame->wHeight / 8;
+
+                /* Some bogus devices report dwMinFrameInterval equal to
+                 * dwMaxFrameInterval and have dwFrameIntervalStep set to
+                 * zero. Setting all null intervals to 1 fixes the problem and
+                 * some other divisions by zero which could happen.
+                 */
+                for (i = 0; i < n; ++i) {
+                        interval = le32_to_cpup((__le32 *)&buffer[26+4*i]);
+                        *(*intervals)++ = interval ? interval : 1;
+                }
+
+                /* Make sure that the default frame interval stays between
+                 * the boundaries.
+                 */
+                n -= frame->bFrameIntervalType ? 1 : 2;
+                frame->dwDefaultFrameInterval =
+                        min(frame->dwFrameInterval[n],
+                            max(frame->dwFrameInterval[0],
+                                frame->dwDefaultFrameInterval));
+
+                uvc_trace(UVC_TRACE_DESCR, "- %ux%u (%u.%u fps)\n",
+                        frame->wWidth, frame->wHeight,
+                        10000000/frame->dwDefaultFrameInterval,
+                        (100000000/frame->dwDefaultFrameInterval)%10);
+
+                format->nframes++;
+                buflen -= buffer[0];
+                buffer += buffer[0];
+        }
+
+        if (buflen > 2 && buffer[2] == VS_STILL_IMAGE_FRAME) {
+                buflen -= buffer[0];
+                buffer += buffer[0];
+        }
+
+        if (buflen > 2 && buffer[2] == VS_COLORFORMAT) {
+                if (buflen < 6) {
+                        uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming"
+                               "interface %d COLORFORMAT error\n",
+                               dev->udev->devnum,
+                               alts->desc.bInterfaceNumber);
+                        return -EINVAL;
+                }
+
+                format->colorspace = uvc_colorspace(buffer[3]);
+
+                buflen -= buffer[0];
+                buffer += buffer[0];
+        }
+
+        return buffer - start;
+}
+
+static int uvc_parse_streaming(struct uvc_device *dev,
+        struct usb_interface *intf)
+{
+        struct uvc_streaming *streaming = NULL;
+        struct uvc_format *format;
+        struct uvc_frame *frame;
+        struct usb_host_interface *alts = &intf->altsetting[0];
+        unsigned char *_buffer, *buffer = alts->extra;
+        int _buflen, buflen = alts->extralen;
+        unsigned int nformats = 0, nframes = 0, nintervals = 0;
+        unsigned int size, i, n, p;
+        __u32 *interval;
+        __u16 psize;
+        int ret = -EINVAL;
+
+        if (intf->cur_altsetting->desc.bInterfaceSubClass
+                != SC_VIDEOSTREAMING) {
+                uvc_trace(UVC_TRACE_DESCR, "device %d interface %d isn't a "
+                        "video streaming interface\n", dev->udev->devnum,
+                        intf->altsetting[0].desc.bInterfaceNumber);
+                return -EINVAL;
+        }
+
+        if (usb_driver_claim_interface(&uvc_driver.driver, intf, dev)) {
+                uvc_trace(UVC_TRACE_DESCR, "device %d interface %d is already "
+                        "claimed\n", dev->udev->devnum,
+                        intf->altsetting[0].desc.bInterfaceNumber);
+                return -EINVAL;
+        }
+
+        streaming = kzalloc(sizeof *streaming, GFP_KERNEL);
+        if (streaming == NULL) {
+                usb_driver_release_interface(&uvc_driver.driver, intf);
+                return -EINVAL;
+        }
+
+        mutex_init(&streaming->mutex);
+        streaming->intf = usb_get_intf(intf);
+        streaming->intfnum = intf->cur_altsetting->desc.bInterfaceNumber;
+
+        /* The Pico iMage webcam has its class-specific interface descriptors
+         * after the endpoint descriptors.
+         */
+        if (buflen == 0) {
+                for (i = 0; i < alts->desc.bNumEndpoints; ++i) {
+                        struct usb_host_endpoint *ep = &alts->endpoint[i];
+
+                        if (ep->extralen == 0)
+                                continue;
+
+                        if (ep->extralen > 2 &&
+                            ep->extra[1] == USB_DT_CS_INTERFACE) {
+                                uvc_trace(UVC_TRACE_DESCR, "trying extra data "
+                                        "from endpoint %u.\n", i);
+                                buffer = alts->endpoint[i].extra;
+                                buflen = alts->endpoint[i].extralen;
+                                break;
+                        }
+                }
+        }
+
+        /* Skip the standard interface descriptors. */
+        while (buflen > 2 && buffer[1] != USB_DT_CS_INTERFACE) {
+                buflen -= buffer[0];
+                buffer += buffer[0];
+        }
+
+        if (buflen <= 2) {
+                uvc_trace(UVC_TRACE_DESCR, "no class-specific streaming "
+                        "interface descriptors found.\n");
+                goto error;
+        }
+
+        /* Parse the header descriptor. */
+        if (buffer[2] == VS_OUTPUT_HEADER) {
+                uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface "
+                        "%d OUTPUT HEADER descriptor is not supported.\n",
+                        dev->udev->devnum, alts->desc.bInterfaceNumber);
+                goto error;
+        } else if (buffer[2] == VS_INPUT_HEADER) {
+                p = buflen >= 5 ? buffer[3] : 0;
+                n = buflen >= 12 ? buffer[12] : 0;
+
+                if (buflen < 13 + p*n || buffer[2] != VS_INPUT_HEADER) {
+                        uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
+                                "interface %d INPUT HEADER descriptor is "
+                                "invalid.\n", dev->udev->devnum,
+                                alts->desc.bInterfaceNumber);
+                        goto error;
+                }
+
+                streaming->header.bNumFormats = p;
+                streaming->header.bEndpointAddress = buffer[6];
+                streaming->header.bmInfo = buffer[7];
+                streaming->header.bTerminalLink = buffer[8];
+                streaming->header.bStillCaptureMethod = buffer[9];
+                streaming->header.bTriggerSupport = buffer[10];
+                streaming->header.bTriggerUsage = buffer[11];
+                streaming->header.bControlSize = n;
+
+                streaming->header.bmaControls = kmalloc(p*n, GFP_KERNEL);
+                if (streaming->header.bmaControls == NULL) {
+                        ret = -ENOMEM;
+                        goto error;
+                }
+
+                memcpy(streaming->header.bmaControls, &buffer[13], p*n);
+        } else {
+                uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface "
+                        "%d HEADER descriptor not found.\n", dev->udev->devnum,
+                        alts->desc.bInterfaceNumber);
+                goto error;
+        }
+
+        buflen -= buffer[0];
+        buffer += buffer[0];
+
+        _buffer = buffer;
+        _buflen = buflen;
+
+        /* Count the format and frame descriptors. */
+        while (_buflen > 2) {
+                switch (_buffer[2]) {
+                case VS_FORMAT_UNCOMPRESSED:
+                case VS_FORMAT_MJPEG:
+                case VS_FORMAT_FRAME_BASED:
+                        nformats++;
+                        break;
+
+                case VS_FORMAT_DV:
+                        /* DV format has no frame descriptor. We will create a
+                         * dummy frame descriptor with a dummy frame interval.
+                         */
+                        nformats++;
+                        nframes++;
+                        nintervals++;
+                        break;
+
+                case VS_FORMAT_MPEG2TS:
+                case VS_FORMAT_STREAM_BASED:
+                        uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
+                                "interface %d FORMAT %u is not supported.\n",
+                                dev->udev->devnum,
+                                alts->desc.bInterfaceNumber, _buffer[2]);
+                        break;
+
+                case VS_FRAME_UNCOMPRESSED:
+                case VS_FRAME_MJPEG:
+                        nframes++;
+                        if (_buflen > 25)
+                                nintervals += _buffer[25] ? _buffer[25] : 3;
+                        break;
+
+                case VS_FRAME_FRAME_BASED:
+                        nframes++;
+                        if (_buflen > 21)
+                                nintervals += _buffer[21] ? _buffer[21] : 3;
+                        break;
+                }
+
+                _buflen -= _buffer[0];
+                _buffer += _buffer[0];
+        }
+
+        if (nformats == 0) {
+                uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface "
+                        "%d has no supported formats defined.\n",
+                        dev->udev->devnum, alts->desc.bInterfaceNumber);
+                goto error;
+        }
+
+        size = nformats * sizeof *format + nframes * sizeof *frame
+             + nintervals * sizeof *interval;
+        format = kzalloc(size, GFP_KERNEL);
+        if (format == NULL) {
+                ret = -ENOMEM;
+                goto error;
+        }
+
+        frame = (struct uvc_frame *)&format[nformats];
+        interval = (__u32 *)&frame[nframes];
+
+        streaming->format = format;
+        streaming->nformats = nformats;
+
+        /* Parse the format descriptors. */
+        while (buflen > 2) {
+                switch (buffer[2]) {
+                case VS_FORMAT_UNCOMPRESSED:
+                case VS_FORMAT_MJPEG:
+                case VS_FORMAT_DV:
+                case VS_FORMAT_FRAME_BASED:
+                        format->frame = frame;
+                        ret = uvc_parse_format(dev, streaming, format,
+                                &interval, buffer, buflen);
+                        if (ret < 0)
+                                goto error;
+
+                        frame += format->nframes;
+                        format++;
+
+                        buflen -= ret;
+                        buffer += ret;
+                        continue;
+
+                default:
+                        break;
+                }
+
+                buflen -= buffer[0];
+                buffer += buffer[0];
+        }
+
+        /* Parse the alternate settings to find the maximum bandwidth. */
+        for (i = 0; i < intf->num_altsetting; ++i) {
+                struct usb_host_endpoint *ep;
+                alts = &intf->altsetting[i];
+                ep = uvc_find_endpoint(alts,
+                                streaming->header.bEndpointAddress);
+                if (ep == NULL)
+                        continue;
+
+                psize = le16_to_cpu(ep->desc.wMaxPacketSize);
+                psize = (psize & 0x07ff) * (1 + ((psize >> 11) & 3));
+                if (psize > streaming->maxpsize)
+                        streaming->maxpsize = psize;
+        }
+
+        list_add_tail(&streaming->list, &dev->streaming);
+        return 0;
+
+error:
+        usb_driver_release_interface(&uvc_driver.driver, intf);
+        usb_put_intf(intf);
+        kfree(streaming->format);
+        kfree(streaming->header.bmaControls);
+        kfree(streaming);
+        return ret;
+}
+
+/* Parse vendor-specific extensions. */
+static int uvc_parse_vendor_control(struct uvc_device *dev,
+        const unsigned char *buffer, int buflen)
+{
+        struct usb_device *udev = dev->udev;
+        struct usb_host_interface *alts = dev->intf->cur_altsetting;
+        struct uvc_entity *unit;
+        unsigned int n, p;
+        int handled = 0;
+
+        switch (le16_to_cpu(dev->udev->descriptor.idVendor)) {
+        case 0x046d:            /* Logitech */
+                if (buffer[1] != 0x41 || buffer[2] != 0x01)
+                        break;
+
+                /* Logitech implements several vendor specific functions
+                 * through vendor specific extension units (LXU).
+                 *
+                 * The LXU descriptors are similar to XU descriptors
+                 * (see "USB Device Video Class for Video Devices", section
+                 * 3.7.2.6 "Extension Unit Descriptor") with the following
+                 * differences:
+                 *
+                 * ----------------------------------------------------------
+                 * 0            bLength         1        Number
+                 *      Size of this descriptor, in bytes: 24+p+n*2
+                 * ----------------------------------------------------------
+                 * 23+p+n       bmControlsType  N       Bitmap
+                 *      Individual bits in the set are defined:
+                 *      0: Absolute
+                 *      1: Relative
+                 *
+                 *      This bitset is mapped exactly the same as bmControls.
+                 * ----------------------------------------------------------
+                 * 23+p+n*2     bReserved       1       Boolean
+                 * ----------------------------------------------------------
+                 * 24+p+n*2     iExtension      1       Index
+                 *      Index of a string descriptor that describes this
+                 *      extension unit.
+                 * ----------------------------------------------------------
+                 */
+                p = buflen >= 22 ? buffer[21] : 0;
+                n = buflen >= 25 + p ? buffer[22+p] : 0;
+
+                if (buflen < 25 + p + 2*n) {
+                        uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
+                                "interface %d EXTENSION_UNIT error\n",
+                                udev->devnum, alts->desc.bInterfaceNumber);
+                        break;
+                }
+
+                unit = kzalloc(sizeof *unit + p + 2*n, GFP_KERNEL);
+                if (unit == NULL)
+                        return -ENOMEM;
+
+                unit->id = buffer[3];
+                unit->type = VC_EXTENSION_UNIT;
+                memcpy(unit->extension.guidExtensionCode, &buffer[4], 16);
+                unit->extension.bNumControls = buffer[20];
+                unit->extension.bNrInPins =
+                        le16_to_cpup((__le16 *)&buffer[21]);
+                unit->extension.baSourceID = (__u8 *)unit + sizeof *unit;
+                memcpy(unit->extension.baSourceID, &buffer[22], p);
+                unit->extension.bControlSize = buffer[22+p];
+                unit->extension.bmControls = (__u8 *)unit + sizeof *unit + p;
+                unit->extension.bmControlsType = (__u8 *)unit + sizeof *unit
+                                               + p + n;
+                memcpy(unit->extension.bmControls, &buffer[23+p], 2*n);
+
+                if (buffer[24+p+2*n] != 0)
+                        usb_string(udev, buffer[24+p+2*n], unit->name,
+                                   sizeof unit->name);
+                else
+                        sprintf(unit->name, "Extension %u", buffer[3]);
+
+                list_add_tail(&unit->list, &dev->entities);
+                handled = 1;
+                break;
+        }
+
+        return handled;
+}
+
+static int uvc_parse_standard_control(struct uvc_device *dev,
+        const unsigned char *buffer, int buflen)
+{
+        struct usb_device *udev = dev->udev;
+        struct uvc_entity *unit, *term;
+        struct usb_interface *intf;
+        struct usb_host_interface *alts = dev->intf->cur_altsetting;
+        unsigned int i, n, p, len;
+        __u16 type;
+
+        switch (buffer[2]) {
+        case VC_HEADER:
+                n = buflen >= 12 ? buffer[11] : 0;
+
+                if (buflen < 12 || buflen < 12 + n) {
+                        uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
+                                "interface %d HEADER error\n", udev->devnum,
+                                alts->desc.bInterfaceNumber);
+                        return -EINVAL;
+                }
+
+                dev->uvc_version = le16_to_cpup((__le16 *)&buffer[3]);
+                dev->clock_frequency = le32_to_cpup((__le32 *)&buffer[7]);
+
+                /* Parse all USB Video Streaming interfaces. */
+                for (i = 0; i < n; ++i) {
+                        intf = usb_ifnum_to_if(udev, buffer[12+i]);
+                        if (intf == NULL) {
+                                uvc_trace(UVC_TRACE_DESCR, "device %d "
+                                        "interface %d doesn't exists\n",
+                                        udev->devnum, i);
+                                continue;
+                        }
+
+                        uvc_parse_streaming(dev, intf);
+                }
+                break;
+
+        case VC_INPUT_TERMINAL:
+                if (buflen < 8) {
+                        uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
+                                "interface %d INPUT_TERMINAL error\n",
+                                udev->devnum, alts->desc.bInterfaceNumber);
+                        return -EINVAL;
+                }
+
+                /* Make sure the terminal type MSB is not null, otherwise it
+                 * could be confused with a unit.
+                 */
+                type = le16_to_cpup((__le16 *)&buffer[4]);
+                if ((type & 0xff00) == 0) {
+                        uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
+                                "interface %d INPUT_TERMINAL %d has invalid "
+                                "type 0x%04x, skipping\n", udev->devnum,
+                                alts->desc.bInterfaceNumber,
+                                buffer[3], type);
+                        return 0;
+                }
+
+                n = 0;
+                p = 0;
+                len = 8;
+
+                if (type == ITT_CAMERA) {
+                        n = buflen >= 15 ? buffer[14] : 0;
+                        len = 15;
+
+                } else if (type == ITT_MEDIA_TRANSPORT_INPUT) {
+                        n = buflen >= 9 ? buffer[8] : 0;
+                        p = buflen >= 10 + n ? buffer[9+n] : 0;
+                        len = 10;
+                }
+
+                if (buflen < len + n + p) {
+                        uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
+                                "interface %d INPUT_TERMINAL error\n",
+                                udev->devnum, alts->desc.bInterfaceNumber);
+                        return -EINVAL;
+                }
+
+                term = kzalloc(sizeof *term + n + p, GFP_KERNEL);
+                if (term == NULL)
+                        return -ENOMEM;
+
+                term->id = buffer[3];
+                term->type = type | UVC_TERM_INPUT;
+
+                if (UVC_ENTITY_TYPE(term) == ITT_CAMERA) {
+                        term->camera.bControlSize = n;
+                        term->camera.bmControls = (__u8 *)term + sizeof *term;
+                        term->camera.wObjectiveFocalLengthMin =
+                                le16_to_cpup((__le16 *)&buffer[8]);
+                        term->camera.wObjectiveFocalLengthMax =
+                                le16_to_cpup((__le16 *)&buffer[10]);
+                        term->camera.wOcularFocalLength =
+                                le16_to_cpup((__le16 *)&buffer[12]);
+                        memcpy(term->camera.bmControls, &buffer[15], n);
+                } else if (UVC_ENTITY_TYPE(term) == ITT_MEDIA_TRANSPORT_INPUT) {
+                        term->media.bControlSize = n;
+                        term->media.bmControls = (__u8 *)term + sizeof *term;
+                        term->media.bTransportModeSize = p;
+                        term->media.bmTransportModes = (__u8 *)term
+                                                     + sizeof *term + n;
+                        memcpy(term->media.bmControls, &buffer[9], n);
+                        memcpy(term->media.bmTransportModes, &buffer[10+n], p);
+                }
+
+                if (buffer[7] != 0)
+                        usb_string(udev, buffer[7], term->name,
+                                   sizeof term->name);
+                else if (UVC_ENTITY_TYPE(term) == ITT_CAMERA)
+                        sprintf(term->name, "Camera %u", buffer[3]);
+                else if (UVC_ENTITY_TYPE(term) == ITT_MEDIA_TRANSPORT_INPUT)
+                        sprintf(term->name, "Media %u", buffer[3]);
+                else
+                        sprintf(term->name, "Input %u", buffer[3]);
+
+                list_add_tail(&term->list, &dev->entities);
+                break;
+
+        case VC_OUTPUT_TERMINAL:
+                if (buflen < 9) {
+                        uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
+                                "interface %d OUTPUT_TERMINAL error\n",
+                                udev->devnum, alts->desc.bInterfaceNumber);
+                        return -EINVAL;
+                }
+
+                /* Make sure the terminal type MSB is not null, otherwise it
+                 * could be confused with a unit.
+                 */
+                type = le16_to_cpup((__le16 *)&buffer[4]);
+                if ((type & 0xff00) == 0) {
+                        uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
+                                "interface %d OUTPUT_TERMINAL %d has invalid "
+                                "type 0x%04x, skipping\n", udev->devnum,
+                                alts->desc.bInterfaceNumber, buffer[3], type);
+                        return 0;
+                }
+
+                term = kzalloc(sizeof *term, GFP_KERNEL);
+                if (term == NULL)
+                        return -ENOMEM;
+
+                term->id = buffer[3];
+                term->type = type | UVC_TERM_OUTPUT;
+                term->output.bSourceID = buffer[7];
+
+                if (buffer[8] != 0)
+                        usb_string(udev, buffer[8], term->name,
+                                   sizeof term->name);
+                else
+                        sprintf(term->name, "Output %u", buffer[3]);
+
+                list_add_tail(&term->list, &dev->entities);
+                break;
+
+        case VC_SELECTOR_UNIT:
+                p = buflen >= 5 ? buffer[4] : 0;
+
+                if (buflen < 5 || buflen < 6 + p) {
+                        uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
+                                "interface %d SELECTOR_UNIT error\n",
+                                udev->devnum, alts->desc.bInterfaceNumber);
+                        return -EINVAL;
+                }
+
+                unit = kzalloc(sizeof *unit + p, GFP_KERNEL);
+                if (unit == NULL)
+                        return -ENOMEM;
+
+                unit->id = buffer[3];
+                unit->type = buffer[2];
+                unit->selector.bNrInPins = buffer[4];
+                unit->selector.baSourceID = (__u8 *)unit + sizeof *unit;
+                memcpy(unit->selector.baSourceID, &buffer[5], p);
+
+                if (buffer[5+p] != 0)
+                        usb_string(udev, buffer[5+p], unit->name,
+                                   sizeof unit->name);
+                else
+                        sprintf(unit->name, "Selector %u", buffer[3]);
+
+                list_add_tail(&unit->list, &dev->entities);
+                break;
+
+        case VC_PROCESSING_UNIT:
+                n = buflen >= 8 ? buffer[7] : 0;
+                p = dev->uvc_version >= 0x0110 ? 10 : 9;
+
+                if (buflen < p + n) {
+                        uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
+                                "interface %d PROCESSING_UNIT error\n",
+                                udev->devnum, alts->desc.bInterfaceNumber);
+                        return -EINVAL;
+                }
+
+                unit = kzalloc(sizeof *unit + n, GFP_KERNEL);
+                if (unit == NULL)
+                        return -ENOMEM;
+
+                unit->id = buffer[3];
+                unit->type = buffer[2];
+                unit->processing.bSourceID = buffer[4];
+                unit->processing.wMaxMultiplier =
+                        le16_to_cpup((__le16 *)&buffer[5]);
+                unit->processing.bControlSize = buffer[7];
+                unit->processing.bmControls = (__u8 *)unit + sizeof *unit;
+                memcpy(unit->processing.bmControls, &buffer[8], n);
+                if (dev->uvc_version >= 0x0110)
+                        unit->processing.bmVideoStandards = buffer[9+n];
+
+                if (buffer[8+n] != 0)
+                        usb_string(udev, buffer[8+n], unit->name,
+                                   sizeof unit->name);
+                else
+                        sprintf(unit->name, "Processing %u", buffer[3]);
+
+                list_add_tail(&unit->list, &dev->entities);
+                break;
+
+        case VC_EXTENSION_UNIT:
+                p = buflen >= 22 ? buffer[21] : 0;
+                n = buflen >= 24 + p ? buffer[22+p] : 0;
+
+                if (buflen < 24 + p + n) {
+                        uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
+                                "interface %d EXTENSION_UNIT error\n",
+                                udev->devnum, alts->desc.bInterfaceNumber);
+                        return -EINVAL;
+                }
+
+                unit = kzalloc(sizeof *unit + p + n, GFP_KERNEL);
+                if (unit == NULL)
+                        return -ENOMEM;
+
+                unit->id = buffer[3];
+                unit->type = buffer[2];
+                memcpy(unit->extension.guidExtensionCode, &buffer[4], 16);
+                unit->extension.bNumControls = buffer[20];
+                unit->extension.bNrInPins =
+                        le16_to_cpup((__le16 *)&buffer[21]);
+                unit->extension.baSourceID = (__u8 *)unit + sizeof *unit;
+                memcpy(unit->extension.baSourceID, &buffer[22], p);
+                unit->extension.bControlSize = buffer[22+p];
+                unit->extension.bmControls = (__u8 *)unit + sizeof *unit + p;
+                memcpy(unit->extension.bmControls, &buffer[23+p], n);
+
+                if (buffer[23+p+n] != 0)
+                        usb_string(udev, buffer[23+p+n], unit->name,
+                                   sizeof unit->name);
+                else
+                        sprintf(unit->name, "Extension %u", buffer[3]);
+
+                list_add_tail(&unit->list, &dev->entities);
+                break;
+
+        default:
+                uvc_trace(UVC_TRACE_DESCR, "Found an unknown CS_INTERFACE "
+                        "descriptor (%u)\n", buffer[2]);
+                break;
+        }
+
+        return 0;
+}
+
+static int uvc_parse_control(struct uvc_device *dev)
+{
+        struct usb_host_interface *alts = dev->intf->cur_altsetting;
+        unsigned char *buffer = alts->extra;
+        int buflen = alts->extralen;
+        int ret;
+
+        /* Parse the default alternate setting only, as the UVC specification
+         * defines a single alternate setting, the default alternate setting
+         * zero.
+         */
+
+        while (buflen > 2) {
+                if (uvc_parse_vendor_control(dev, buffer, buflen) ||
+                    buffer[1] != USB_DT_CS_INTERFACE)
+                        goto next_descriptor;
+
+                if ((ret = uvc_parse_standard_control(dev, buffer, buflen)) < 0)
+                        return ret;
+
+next_descriptor:
+                buflen -= buffer[0];
+                buffer += buffer[0];
+        }
+
+        /* Check if the optional status endpoint is present. */
+        if (alts->desc.bNumEndpoints == 1) {
+                struct usb_host_endpoint *ep = &alts->endpoint[0];
+                struct usb_endpoint_descriptor *desc = &ep->desc;
+
+                if (usb_endpoint_is_int_in(desc) &&
+                    le16_to_cpu(desc->wMaxPacketSize) >= 8 &&
+                    desc->bInterval != 0) {
+                        uvc_trace(UVC_TRACE_DESCR, "Found a Status endpoint "
+                                "(addr %02x).\n", desc->bEndpointAddress);
+                        dev->int_ep = ep;
+                }
+        }
+
+        return 0;
+}
+
+/* ------------------------------------------------------------------------
+ * USB probe and disconnect
+ */
+
+/*
+ * Unregister the video devices.
+ */
+static void uvc_unregister_video(struct uvc_device *dev)
+{
+        if (dev->video.vdev) {
+                if (dev->video.vdev->minor == -1)
+                        video_device_release(dev->video.vdev);
+                else
+                        video_unregister_device(dev->video.vdev);
+                dev->video.vdev = NULL;
+        }
+}
+
+/*
+ * Scan the UVC descriptors to locate a chain starting at an Output Terminal
+ * and containing the following units:
+ *
+ * - a USB Streaming Output Terminal
+ * - zero or one Processing Unit
+ * - zero, one or mode single-input Selector Units
+ * - zero or one multiple-input Selector Units, provided all inputs are
+ *   connected to input terminals
+ * - zero, one or mode single-input Extension Units
+ * - one Camera Input Terminal, or one or more External terminals.
+ *
+ * A side forward scan is made on each detected entity to check for additional
+ * extension units.
+ */
+static int uvc_scan_chain_entity(struct uvc_video_device *video,
+        struct uvc_entity *entity)
+{
+        switch (UVC_ENTITY_TYPE(entity)) {
+        case VC_EXTENSION_UNIT:
+                if (uvc_trace_param & UVC_TRACE_PROBE)
+                        printk(" <- XU %d", entity->id);
+
+                if (entity->extension.bNrInPins != 1) {
+                        uvc_trace(UVC_TRACE_DESCR, "Extension unit %d has more "
+                                "than 1 input pin.\n", entity->id);
+                        return -1;
+                }
+
+                list_add_tail(&entity->chain, &video->extensions);
+                break;
+
+        case VC_PROCESSING_UNIT:
+                if (uvc_trace_param & UVC_TRACE_PROBE)
+                        printk(" <- PU %d", entity->id);
+
+                if (video->processing != NULL) {
+                        uvc_trace(UVC_TRACE_DESCR, "Found multiple "
+                                "Processing Units in chain.\n");
+                        return -1;
+                }
+
+                video->processing = entity;
+                break;
+
+        case VC_SELECTOR_UNIT:
+                if (uvc_trace_param & UVC_TRACE_PROBE)
+                        printk(" <- SU %d", entity->id);
+
+                /* Single-input selector units are ignored. */
+                if (entity->selector.bNrInPins == 1)
+                        break;
+
+                if (video->selector != NULL) {
+                        uvc_trace(UVC_TRACE_DESCR, "Found multiple Selector "
+                                "Units in chain.\n");
+                        return -1;
+                }
+
+                video->selector = entity;
+                break;
+
+        case ITT_VENDOR_SPECIFIC:
+        case ITT_CAMERA:
+        case ITT_MEDIA_TRANSPORT_INPUT:
+                if (uvc_trace_param & UVC_TRACE_PROBE)
+                        printk(" <- IT %d\n", entity->id);
+
+                list_add_tail(&entity->chain, &video->iterms);
+                break;
+
+        default:
+                uvc_trace(UVC_TRACE_DESCR, "Unsupported entity type "
+                        "0x%04x found in chain.\n", UVC_ENTITY_TYPE(entity));
+                return -1;
+        }
+
+        return 0;
+}
+
+static int uvc_scan_chain_forward(struct uvc_video_device *video,
+        struct uvc_entity *entity, struct uvc_entity *prev)
+{
+        struct uvc_entity *forward;
+        int found;
+
+        /* Forward scan */
+        forward = NULL;
+        found = 0;
+
+        while (1) {
+                forward = uvc_entity_by_reference(video->dev, entity->id,
+                        forward);
+                if (forward == NULL)
+                        break;
+
+                if (UVC_ENTITY_TYPE(forward) != VC_EXTENSION_UNIT ||
+                    forward == prev)
+                        continue;
+
+                if (forward->extension.bNrInPins != 1) {
+                        uvc_trace(UVC_TRACE_DESCR, "Extension unit %d has"
+                                "more than 1 input pin.\n", entity->id);
+                        return -1;
+                }
+
+                list_add_tail(&forward->chain, &video->extensions);
+                if (uvc_trace_param & UVC_TRACE_PROBE) {
+                        if (!found)
+                                printk(" (-> XU");
+
+                        printk(" %d", forward->id);
+                        found = 1;
+                }
+        }
+        if (found)
+                printk(")");
+
+        return 0;
+}
+
+static int uvc_scan_chain_backward(struct uvc_video_device *video,
+        struct uvc_entity *entity)
+{
+        struct uvc_entity *term;
+        int id = -1, i;
+
+        switch (UVC_ENTITY_TYPE(entity)) {
+        case VC_EXTENSION_UNIT:
+                id = entity->extension.baSourceID[0];
+                break;
+
+        case VC_PROCESSING_UNIT:
+                id = entity->processing.bSourceID;
+                break;
+
+        case VC_SELECTOR_UNIT:
+                /* Single-input selector units are ignored. */
+                if (entity->selector.bNrInPins == 1) {
+                        id = entity->selector.baSourceID[0];
+                        break;
+                }
+
+                if (uvc_trace_param & UVC_TRACE_PROBE)
+                        printk(" <- IT");
+
+                video->selector = entity;
+                for (i = 0; i < entity->selector.bNrInPins; ++i) {
+                        id = entity->selector.baSourceID[i];
+                        term = uvc_entity_by_id(video->dev, id);
+                        if (term == NULL || !UVC_ENTITY_IS_ITERM(term)) {
+                                uvc_trace(UVC_TRACE_DESCR, "Selector unit %d "
+                                        "input %d isn't connected to an "
+                                        "input terminal\n", entity->id, i);
+                                return -1;
+                        }
+
+                        if (uvc_trace_param & UVC_TRACE_PROBE)
+                                printk(" %d", term->id);
+
+                        list_add_tail(&term->chain, &video->iterms);
+                        uvc_scan_chain_forward(video, term, entity);
+                }
+
+                if (uvc_trace_param & UVC_TRACE_PROBE)
+                        printk("\n");
+
+                id = 0;
+                break;
+        }
+
+        return id;
+}
+
+static int uvc_scan_chain(struct uvc_video_device *video)
+{
+        struct uvc_entity *entity, *prev;
+        int id;
+
+        entity = video->oterm;
+        uvc_trace(UVC_TRACE_PROBE, "Scanning UVC chain: OT %d", entity->id);
+        id = entity->output.bSourceID;
+        while (id != 0) {
+                prev = entity;
+                entity = uvc_entity_by_id(video->dev, id);
+                if (entity == NULL) {
+                        uvc_trace(UVC_TRACE_DESCR, "Found reference to "
+                                "unknown entity %d.\n", id);
+                        return -1;
+                }
+
+                /* Process entity */
+                if (uvc_scan_chain_entity(video, entity) < 0)
+                        return -1;
+
+                /* Forward scan */
+                if (uvc_scan_chain_forward(video, entity, prev) < 0)
+                        return -1;
+
+                /* Stop when a terminal is found. */
+                if (!UVC_ENTITY_IS_UNIT(entity))
+                        break;
+
+                /* Backward scan */
+                id = uvc_scan_chain_backward(video, entity);
+                if (id < 0)
+                        return id;
+        }
+
+        /* Initialize the video buffers queue. */
+        uvc_queue_init(&video->queue);
+
+        return 0;
+}
+
+/*
+ * Register the video devices.
+ *
+ * The driver currently supports a single video device per control interface
+ * only. The terminal and units must match the following structure:
+ *
+ * ITT_CAMERA -> VC_PROCESSING_UNIT -> VC_EXTENSION_UNIT{0,n} -> TT_STREAMING
+ *
+ * The Extension Units, if present, must have a single input pin. The
+ * Processing Unit and Extension Units can be in any order. Additional
+ * Extension Units connected to the main chain as single-unit branches are
+ * also supported.
+ */
+static int uvc_register_video(struct uvc_device *dev)
+{
+        struct video_device *vdev;
+        struct uvc_entity *term;
+        int found = 0, ret;
+
+        /* Check if the control interface matches the structure we expect. */
+        list_for_each_entry(term, &dev->entities, list) {
+                struct uvc_streaming *streaming;
+
+                if (UVC_ENTITY_TYPE(term) != TT_STREAMING)
+                        continue;
+
+                memset(&dev->video, 0, sizeof dev->video);
+                mutex_init(&dev->video.ctrl_mutex);
+                INIT_LIST_HEAD(&dev->video.iterms);
+                INIT_LIST_HEAD(&dev->video.extensions);
+                dev->video.oterm = term;
+                dev->video.dev = dev;
+                if (uvc_scan_chain(&dev->video) < 0)
+                        continue;
+
+                list_for_each_entry(streaming, &dev->streaming, list) {
+                        if (streaming->header.bTerminalLink == term->id) {
+                                dev->video.streaming = streaming;
+                                found = 1;
+                                break;
+                        }
+                }
+
+                if (found)
+                        break;
+        }
+
+        if (!found) {
+                uvc_printk(KERN_INFO, "No valid video chain found.\n");
+                return -1;
+        }
+
+        if (uvc_trace_param & UVC_TRACE_PROBE) {
+                uvc_printk(KERN_INFO, "Found a valid video chain (");
+                list_for_each_entry(term, &dev->video.iterms, chain) {
+                        printk("%d", term->id);
+                        if (term->chain.next != &dev->video.iterms)
+                                printk(",");
+                }
+                printk(" -> %d).\n", dev->video.oterm->id);
+        }
+
+        /* Initialize the streaming interface with default streaming
+         * parameters.
+         */
+        if ((ret = uvc_video_init(&dev->video)) < 0) {
+                uvc_printk(KERN_ERR, "Failed to initialize the device "
+                        "(%d).\n", ret);
+                return ret;
+        }
+
+        /* Register the device with V4L. */
+        vdev = video_device_alloc();
+        if (vdev == NULL)
+                return -1;
+
+        /* We already hold a reference to dev->udev. The video device will be
+         * unregistered before the reference is released, so we don't need to
+         * get another one.
+         */
+        vdev->dev = &dev->intf->dev;
+        vdev->type = 0;
+        vdev->type2 = 0;
+        vdev->minor = -1;
+        vdev->fops = &uvc_fops;
+        vdev->release = video_device_release;
+        strncpy(vdev->name, dev->name, sizeof vdev->name);
+
+        /* Set the driver data before calling video_register_device, otherwise
+         * uvc_v4l2_open might race us.
+         *
+         * FIXME: usb_set_intfdata hasn't been called so far. Is that a
+         *        problem ? Does any function which could be called here get
+         *        a pointer to the usb_interface ?
+         */
+        dev->video.vdev = vdev;
+        video_set_drvdata(vdev, &dev->video);
+
+        if (video_register_device(vdev, VFL_TYPE_GRABBER, -1) < 0) {
+                dev->video.vdev = NULL;
+                video_device_release(vdev);
+                return -1;
+        }
+
+        return 0;
+}
+
+/*
+ * Delete the UVC device.
+ *
+ * Called by the kernel when the last reference to the uvc_device structure
+ * is released.
+ *
+ * Unregistering the video devices is done here because every opened instance
+ * must be closed before the device can be unregistered. An alternative would
+ * have been to use another reference count for uvc_v4l2_open/uvc_release, and
+ * unregister the video devices on disconnect when that reference count drops
+ * to zero.
+ *
+ * As this function is called after or during disconnect(), all URBs have
+ * already been canceled by the USB core. There is no need to kill the
+ * interrupt URB manually.
+ */
+void uvc_delete(struct kref *kref)
+{
+        struct uvc_device *dev = container_of(kref, struct uvc_device, kref);
+        struct list_head *p, *n;
+
+        /* Unregister the video device */
+        uvc_unregister_video(dev);
+        usb_put_intf(dev->intf);
+        usb_put_dev(dev->udev);
+
+        uvc_status_cleanup(dev);
+        uvc_ctrl_cleanup_device(dev);
+
+        list_for_each_safe(p, n, &dev->entities) {
+                struct uvc_entity *entity;
+                entity = list_entry(p, struct uvc_entity, list);
+                kfree(entity);
+        }
+
+        list_for_each_safe(p, n, &dev->streaming) {
+                struct uvc_streaming *streaming;
+                streaming = list_entry(p, struct uvc_streaming, list);
+                usb_driver_release_interface(&uvc_driver.driver,
+                        streaming->intf);
+                usb_put_intf(streaming->intf);
+                kfree(streaming->format);
+                kfree(streaming->header.bmaControls);
+                kfree(streaming);
+        }
+
+        kfree(dev);
+}
+
+static int uvc_probe(struct usb_interface *intf,
+                     const struct usb_device_id *id)
+{
+        struct usb_device *udev = interface_to_usbdev(intf);
+        struct uvc_device *dev;
+        int ret;
+
+        if (id->idVendor && id->idProduct)
+                uvc_trace(UVC_TRACE_PROBE, "Probing known UVC device %s "
+                                "(%04x:%04x)\n", udev->devpath, id->idVendor,
+                                id->idProduct);
+        else
+                uvc_trace(UVC_TRACE_PROBE, "Probing generic UVC device %s\n",
+                                udev->devpath);
+
+        /* Allocate memory for the device and initialize it */
+        if ((dev = kzalloc(sizeof *dev, GFP_KERNEL)) == NULL)
+                return -ENOMEM;
+
+        INIT_LIST_HEAD(&dev->entities);
+        INIT_LIST_HEAD(&dev->streaming);
+        kref_init(&dev->kref);
+
+        dev->udev = usb_get_dev(udev);
+        dev->intf = usb_get_intf(intf);
+        dev->intfnum = intf->cur_altsetting->desc.bInterfaceNumber;
+        dev->quirks = id->driver_info | uvc_quirks_param;
+
+        if (udev->product != NULL)
+                strncpy(dev->name, udev->product, sizeof dev->name);
+        else
+                snprintf(dev->name, sizeof dev->name,
+                        "UVC Camera (%04x:%04x)",
+                        le16_to_cpu(udev->descriptor.idVendor),
+                        le16_to_cpu(udev->descriptor.idProduct));
+
+        /* Parse the Video Class control descriptor */
+        if (uvc_parse_control(dev) < 0) {
+                uvc_trace(UVC_TRACE_PROBE, "Unable to parse UVC "
+                        "descriptors.\n");
+                goto error;
+        }
+
+        uvc_printk(KERN_INFO, "Found UVC %u.%02u device %s (%04x:%04x)\n",
+                dev->uvc_version >> 8, dev->uvc_version & 0xff,
+                udev->product ? udev->product : "<unnamed>",
+                le16_to_cpu(udev->descriptor.idVendor),
+                le16_to_cpu(udev->descriptor.idProduct));
+
+        if (uvc_quirks_param != 0) {
+                uvc_printk(KERN_INFO, "Forcing device quirks 0x%x by module "
+                        "parameter for testing purpose.\n", uvc_quirks_param);
+                uvc_printk(KERN_INFO, "Please report required quirks to the "
+                        "linux-uvc-devel mailing list.\n");
+        }
+
+        /* Initialize controls */
+        if (uvc_ctrl_init_device(dev) < 0)
+                goto error;
+
+        /* Register the video devices */
+        if (uvc_register_video(dev) < 0)
+                goto error;
+
+        /* Save our data pointer in the interface data */
+        usb_set_intfdata(intf, dev);
+
+        /* Initialize the interrupt URB */
+        if ((ret = uvc_status_init(dev)) < 0) {
+                uvc_printk(KERN_INFO, "Unable to initialize the status "
+                        "endpoint (%d), status interrupt will not be "
+                        "supported.\n", ret);
+        }
+
+        uvc_trace(UVC_TRACE_PROBE, "UVC device initialized.\n");
+        return 0;
+
+error:
+        kref_put(&dev->kref, uvc_delete);
+        return -ENODEV;
+}
+
+static void uvc_disconnect(struct usb_interface *intf)
+{
+        struct uvc_device *dev = usb_get_intfdata(intf);
+
+        /* Set the USB interface data to NULL. This can be done outside the
+         * lock, as there's no other reader.
+         */
+        usb_set_intfdata(intf, NULL);
+
+        if (intf->cur_altsetting->desc.bInterfaceSubClass == SC_VIDEOSTREAMING)
+                return;
+
+        /* uvc_v4l2_open() might race uvc_disconnect(). A static driver-wide
+         * lock is needed to prevent uvc_disconnect from releasing its
+         * reference to the uvc_device instance after uvc_v4l2_open() received
+         * the pointer to the device (video_devdata) but before it got the
+         * chance to increase the reference count (kref_get).
+         */
+        mutex_lock(&uvc_driver.open_mutex);
+
+        dev->state |= UVC_DEV_DISCONNECTED;
+        kref_put(&dev->kref, uvc_delete);
+
+        mutex_unlock(&uvc_driver.open_mutex);
+}
+
+static int uvc_suspend(struct usb_interface *intf, pm_message_t message)
+{
+        struct uvc_device *dev = usb_get_intfdata(intf);
+
+        uvc_trace(UVC_TRACE_SUSPEND, "Suspending interface %u\n",
+                intf->cur_altsetting->desc.bInterfaceNumber);
+
+        /* Controls are cached on the fly so they don't need to be saved. */
+        if (intf->cur_altsetting->desc.bInterfaceSubClass == SC_VIDEOCONTROL)
+                return uvc_status_suspend(dev);
+
+        if (dev->video.streaming->intf != intf) {
+                uvc_trace(UVC_TRACE_SUSPEND, "Suspend: video streaming USB "
+                                "interface mismatch.\n");
+                return -EINVAL;
+        }
+
+        return uvc_video_suspend(&dev->video);
+}
+
+static int uvc_resume(struct usb_interface *intf)
+{
+        struct uvc_device *dev = usb_get_intfdata(intf);
+        int ret;
+
+        uvc_trace(UVC_TRACE_SUSPEND, "Resuming interface %u\n",
+                intf->cur_altsetting->desc.bInterfaceNumber);
+
+        if (intf->cur_altsetting->desc.bInterfaceSubClass == SC_VIDEOCONTROL) {
+                if ((ret = uvc_ctrl_resume_device(dev)) < 0)
+                        return ret;
+
+                return uvc_status_resume(dev);
+        }
+
+        if (dev->video.streaming->intf != intf) {
+                uvc_trace(UVC_TRACE_SUSPEND, "Resume: video streaming USB "
+                                "interface mismatch.\n");
+                return -EINVAL;
+        }
+
+        return uvc_video_resume(&dev->video);
+}
+
+/* ------------------------------------------------------------------------
+ * Driver initialization and cleanup
+ */
+
+/*
+ * The Logitech cameras listed below have their interface class set to
+ * VENDOR_SPEC because they don't announce themselves as UVC devices, even
+ * though they are compliant.
+ */
+static struct usb_device_id uvc_ids[] = {
+        /* ALi M5606 (Clevo M540SR) */
+        { .match_flags          = USB_DEVICE_ID_MATCH_DEVICE
+                                | USB_DEVICE_ID_MATCH_INT_INFO,
+          .idVendor             = 0x0402,
+          .idProduct            = 0x5606,
+          .bInterfaceClass      = USB_CLASS_VIDEO,
+          .bInterfaceSubClass   = 1,
+          .bInterfaceProtocol   = 0,
+          .driver_info          = UVC_QUIRK_PROBE_MINMAX },
+        /* Creative Live! Optia */
+        { .match_flags          = USB_DEVICE_ID_MATCH_DEVICE
+                                | USB_DEVICE_ID_MATCH_INT_INFO,
+          .idVendor             = 0x041e,
+          .idProduct            = 0x4057,
+          .bInterfaceClass      = USB_CLASS_VIDEO,
+          .bInterfaceSubClass   = 1,
+          .bInterfaceProtocol   = 0,
+          .driver_info          = UVC_QUIRK_PROBE_MINMAX },
+        /* Microsoft Lifecam NX-6000 */
+        { .match_flags          = USB_DEVICE_ID_MATCH_DEVICE
+                                | USB_DEVICE_ID_MATCH_INT_INFO,
+          .idVendor             = 0x045e,
+          .idProduct            = 0x00f8,
+          .bInterfaceClass      = USB_CLASS_VIDEO,
+          .bInterfaceSubClass   = 1,
+          .bInterfaceProtocol   = 0,
+          .driver_info          = UVC_QUIRK_PROBE_MINMAX },
+        /* Microsoft Lifecam VX-7000 */
+        { .match_flags          = USB_DEVICE_ID_MATCH_DEVICE
+                                | USB_DEVICE_ID_MATCH_INT_INFO,
+          .idVendor             = 0x045e,
+          .idProduct            = 0x0723,
+          .bInterfaceClass      = USB_CLASS_VIDEO,
+          .bInterfaceSubClass   = 1,
+          .bInterfaceProtocol   = 0,
+          .driver_info          = UVC_QUIRK_PROBE_MINMAX },
+        /* Logitech Quickcam Fusion */
+        { .match_flags          = USB_DEVICE_ID_MATCH_DEVICE
+                                | USB_DEVICE_ID_MATCH_INT_INFO,
+          .idVendor             = 0x046d,
+          .idProduct            = 0x08c1,
+          .bInterfaceClass      = USB_CLASS_VENDOR_SPEC,
+          .bInterfaceSubClass   = 1,
+          .bInterfaceProtocol   = 0 },
+        /* Logitech Quickcam Orbit MP */
+        { .match_flags          = USB_DEVICE_ID_MATCH_DEVICE
+                                | USB_DEVICE_ID_MATCH_INT_INFO,
+          .idVendor             = 0x046d,
+          .idProduct            = 0x08c2,
+          .bInterfaceClass      = USB_CLASS_VENDOR_SPEC,
+          .bInterfaceSubClass   = 1,
+          .bInterfaceProtocol   = 0 },
+        /* Logitech Quickcam Pro for Notebook */
+        { .match_flags          = USB_DEVICE_ID_MATCH_DEVICE
+                                | USB_DEVICE_ID_MATCH_INT_INFO,
+          .idVendor             = 0x046d,
+          .idProduct            = 0x08c3,
+          .bInterfaceClass      = USB_CLASS_VENDOR_SPEC,
+          .bInterfaceSubClass   = 1,
+          .bInterfaceProtocol   = 0 },
+        /* Logitech Quickcam Pro 5000 */
+        { .match_flags          = USB_DEVICE_ID_MATCH_DEVICE
+                                | USB_DEVICE_ID_MATCH_INT_INFO,
+          .idVendor             = 0x046d,
+          .idProduct            = 0x08c5,
+          .bInterfaceClass      = USB_CLASS_VENDOR_SPEC,
+          .bInterfaceSubClass   = 1,
+          .bInterfaceProtocol   = 0 },
+        /* Logitech Quickcam OEM Dell Notebook */
+        { .match_flags          = USB_DEVICE_ID_MATCH_DEVICE
+                                | USB_DEVICE_ID_MATCH_INT_INFO,
+          .idVendor             = 0x046d,
+          .idProduct            = 0x08c6,
+          .bInterfaceClass      = USB_CLASS_VENDOR_SPEC,
+          .bInterfaceSubClass   = 1,
+          .bInterfaceProtocol   = 0 },
+        /* Logitech Quickcam OEM Cisco VT Camera II */
+        { .match_flags          = USB_DEVICE_ID_MATCH_DEVICE
+                                | USB_DEVICE_ID_MATCH_INT_INFO,
+          .idVendor             = 0x046d,
+          .idProduct            = 0x08c7,
+          .bInterfaceClass      = USB_CLASS_VENDOR_SPEC,
+          .bInterfaceSubClass   = 1,
+          .bInterfaceProtocol   = 0 },
+        /* Apple Built-In iSight */
+        { .match_flags          = USB_DEVICE_ID_MATCH_DEVICE
+                                | USB_DEVICE_ID_MATCH_INT_INFO,
+          .idVendor             = 0x05ac,
+          .idProduct            = 0x8501,
+          .bInterfaceClass      = USB_CLASS_VIDEO,
+          .bInterfaceSubClass   = 1,
+          .bInterfaceProtocol   = 0,
+          .driver_info          = UVC_QUIRK_PROBE_MINMAX
+                                | UVC_QUIRK_BUILTIN_ISIGHT },
+        /* Genesys Logic USB 2.0 PC Camera */
+        { .match_flags          = USB_DEVICE_ID_MATCH_DEVICE
+                                | USB_DEVICE_ID_MATCH_INT_INFO,
+          .idVendor             = 0x05e3,
+          .idProduct            = 0x0505,
+          .bInterfaceClass      = USB_CLASS_VIDEO,
+          .bInterfaceSubClass   = 1,
+          .bInterfaceProtocol   = 0,
+          .driver_info          = UVC_QUIRK_STREAM_NO_FID },
+        /* Silicon Motion SM371 */
+        { .match_flags          = USB_DEVICE_ID_MATCH_DEVICE
+                                | USB_DEVICE_ID_MATCH_INT_INFO,
+          .idVendor             = 0x090c,
+          .idProduct            = 0xb371,
+          .bInterfaceClass      = USB_CLASS_VIDEO,
+          .bInterfaceSubClass   = 1,
+          .bInterfaceProtocol   = 0,
+          .driver_info          = UVC_QUIRK_PROBE_MINMAX },
+        /* MT6227 */
+        { .match_flags          = USB_DEVICE_ID_MATCH_DEVICE
+                                | USB_DEVICE_ID_MATCH_INT_INFO,
+          .idVendor             = 0x0e8d,
+          .idProduct            = 0x0004,
+          .bInterfaceClass      = USB_CLASS_VIDEO,
+          .bInterfaceSubClass   = 1,
+          .bInterfaceProtocol   = 0,
+          .driver_info          = UVC_QUIRK_PROBE_MINMAX },
+        /* Syntek (HP Spartan) */
+        { .match_flags          = USB_DEVICE_ID_MATCH_DEVICE
+                                | USB_DEVICE_ID_MATCH_INT_INFO,
+          .idVendor             = 0x174f,
+          .idProduct            = 0x5212,
+          .bInterfaceClass      = USB_CLASS_VIDEO,
+          .bInterfaceSubClass   = 1,
+          .bInterfaceProtocol   = 0,
+          .driver_info          = UVC_QUIRK_STREAM_NO_FID },
+        /* Syntek (Asus U3S) */
+        { .match_flags          = USB_DEVICE_ID_MATCH_DEVICE
+                                | USB_DEVICE_ID_MATCH_INT_INFO,
+          .idVendor             = 0x174f,
+          .idProduct            = 0x8a33,
+          .bInterfaceClass      = USB_CLASS_VIDEO,
+          .bInterfaceSubClass   = 1,
+          .bInterfaceProtocol   = 0,
+          .driver_info          = UVC_QUIRK_STREAM_NO_FID },
+        /* Ecamm Pico iMage */
+        { .match_flags          = USB_DEVICE_ID_MATCH_DEVICE
+                                | USB_DEVICE_ID_MATCH_INT_INFO,
+          .idVendor             = 0x18cd,
+          .idProduct            = 0xcafe,
+          .bInterfaceClass      = USB_CLASS_VIDEO,
+          .bInterfaceSubClass   = 1,
+          .bInterfaceProtocol   = 0,
+          .driver_info          = UVC_QUIRK_PROBE_EXTRAFIELDS },
+        /* Bodelin ProScopeHR */
+        { .match_flags          = USB_DEVICE_ID_MATCH_DEVICE
+                                | USB_DEVICE_ID_MATCH_DEV_HI
+                                | USB_DEVICE_ID_MATCH_INT_INFO,
+          .idVendor             = 0x19ab,
+          .idProduct            = 0x1000,
+          .bcdDevice_hi         = 0x0126,
+          .bInterfaceClass      = USB_CLASS_VIDEO,
+          .bInterfaceSubClass   = 1,
+          .bInterfaceProtocol   = 0,
+          .driver_info          = UVC_QUIRK_STATUS_INTERVAL },
+        /* SiGma Micro USB Web Camera */
+        { .match_flags          = USB_DEVICE_ID_MATCH_DEVICE
+                                | USB_DEVICE_ID_MATCH_INT_INFO,
+          .idVendor             = 0x1c4f,
+          .idProduct            = 0x3000,
+          .bInterfaceClass      = USB_CLASS_VIDEO,
+          .bInterfaceSubClass   = 1,
+          .bInterfaceProtocol   = 0,
+          .driver_info          = UVC_QUIRK_PROBE_MINMAX
+                                | UVC_QUIRK_IGNORE_SELECTOR_UNIT},
+        /* Acer OEM Webcam - Unknown vendor */
+        { .match_flags          = USB_DEVICE_ID_MATCH_DEVICE
+                                | USB_DEVICE_ID_MATCH_INT_INFO,
+          .idVendor             = 0x5986,
+          .idProduct            = 0x0100,
+          .bInterfaceClass      = USB_CLASS_VIDEO,
+          .bInterfaceSubClass   = 1,
+          .bInterfaceProtocol   = 0,
+          .driver_info          = UVC_QUIRK_PROBE_MINMAX },
+        /* Packard Bell OEM Webcam */
+        { .match_flags          = USB_DEVICE_ID_MATCH_DEVICE
+                                | USB_DEVICE_ID_MATCH_INT_INFO,
+          .idVendor             = 0x5986,
+          .idProduct            = 0x0101,
+          .bInterfaceClass      = USB_CLASS_VIDEO,
+          .bInterfaceSubClass   = 1,
+          .bInterfaceProtocol   = 0,
+          .driver_info          = UVC_QUIRK_PROBE_MINMAX },
+        /* Acer Crystal Eye webcam */
+        { .match_flags          = USB_DEVICE_ID_MATCH_DEVICE
+                                | USB_DEVICE_ID_MATCH_INT_INFO,
+          .idVendor             = 0x5986,
+          .idProduct            = 0x0102,
+          .bInterfaceClass      = USB_CLASS_VIDEO,
+          .bInterfaceSubClass   = 1,
+          .bInterfaceProtocol   = 0,
+          .driver_info          = UVC_QUIRK_PROBE_MINMAX },
+        /* Acer OrbiCam - Unknown vendor */
+        { .match_flags          = USB_DEVICE_ID_MATCH_DEVICE
+                                | USB_DEVICE_ID_MATCH_INT_INFO,
+          .idVendor             = 0x5986,
+          .idProduct            = 0x0200,
+          .bInterfaceClass      = USB_CLASS_VIDEO,
+          .bInterfaceSubClass   = 1,
+          .bInterfaceProtocol   = 0,
+          .driver_info          = UVC_QUIRK_PROBE_MINMAX },
+        /* Generic USB Video Class */
+        { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, 0) },
+        {}
+};
+
+MODULE_DEVICE_TABLE(usb, uvc_ids);
+
+struct uvc_driver uvc_driver = {
+        .driver = {
+                .name           = "uvcvideo",
+                .probe          = uvc_probe,
+                .disconnect     = uvc_disconnect,
+                .suspend        = uvc_suspend,
+                .resume         = uvc_resume,
+                .id_table       = uvc_ids,
+                .supports_autosuspend = 1,
+        },
+};
+
+static int __init uvc_init(void)
+{
+        int result;
+
+        INIT_LIST_HEAD(&uvc_driver.devices);
+        INIT_LIST_HEAD(&uvc_driver.controls);
+        mutex_init(&uvc_driver.open_mutex);
+        mutex_init(&uvc_driver.ctrl_mutex);
+
+        uvc_ctrl_init();
+
+        result = usb_register(&uvc_driver.driver);
+        if (result == 0)
+                printk(KERN_INFO DRIVER_DESC " (" DRIVER_VERSION ")\n");
+        return result;
+}
+
+static void __exit uvc_cleanup(void)
+{
+        usb_deregister(&uvc_driver.driver);
+}
+
+module_init(uvc_init);
+module_exit(uvc_cleanup);
+
+module_param_named(quirks, uvc_quirks_param, uint, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(quirks, "Forced device quirks");
+module_param_named(trace, uvc_trace_param, uint, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(trace, "Trace level bitmask");
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRIVER_VERSION);
diff --git a/drivers/media/video/uvc/uvc_isight.c b/drivers/media/video/uvc/uvc_isight.c
new file mode 100644
index 000000000000..37bdefdbead5
--- /dev/null
+++ b/drivers/media/video/uvc/uvc_isight.c
@@ -0,0 +1,134 @@
+/*
+ *      uvc_isight.c  --  USB Video Class driver - iSight support
+ *
+ *      Copyright (C) 2006-2007
+ *              Ivan N. Zlatev <contact@i-nz.net>
+ *
+ *      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/usb.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+
+#include "uvcvideo.h"
+
+/* Built-in iSight webcams implements most of UVC 1.0 except a
+ * different packet format. Instead of sending a header at the
+ * beginning of each isochronous transfer payload, the webcam sends a
+ * single header per image (on its own in a packet), followed by
+ * packets containing data only.
+ *
+ * Offset   Size (bytes)        Description
+ * ------------------------------------------------------------------
+ * 0x00         1       Header length
+ * 0x01         1       Flags (UVC-compliant)
+ * 0x02         4       Always equal to '11223344'
+ * 0x06         8       Always equal to 'deadbeefdeadface'
+ * 0x0e         16      Unknown
+ *
+ * The header can be prefixed by an optional, unknown-purpose byte.
+ */
+
+static int isight_decode(struct uvc_video_queue *queue, struct uvc_buffer *buf,
+                const __u8 *data, unsigned int len)
+{
+        static const __u8 hdr[] = {
+                0x11, 0x22, 0x33, 0x44,
+                0xde, 0xad, 0xbe, 0xef,
+                0xde, 0xad, 0xfa, 0xce
+        };
+
+        unsigned int maxlen, nbytes;
+        __u8 *mem;
+        int is_header = 0;
+
+        if (buf == NULL)
+                return 0;
+
+        if ((len >= 14 && memcmp(&data[2], hdr, 12) == 0) ||
+            (len >= 15 && memcmp(&data[3], hdr, 12) == 0)) {
+                uvc_trace(UVC_TRACE_FRAME, "iSight header found\n");
+                is_header = 1;
+        }
+
+        /* Synchronize to the input stream by waiting for a header packet. */
+        if (buf->state != UVC_BUF_STATE_ACTIVE) {
+                if (!is_header) {
+                        uvc_trace(UVC_TRACE_FRAME, "Dropping packet (out of "
+                                  "sync).\n");
+                        return 0;
+                }
+
+                buf->state = UVC_BUF_STATE_ACTIVE;
+        }
+
+        /* Mark the buffer as done if we're at the beginning of a new frame.
+         *
+         * Empty buffers (bytesused == 0) don't trigger end of frame detection
+         * as it doesn't make sense to return an empty buffer.
+         */
+        if (is_header && buf->buf.bytesused != 0) {
+                buf->state = UVC_BUF_STATE_DONE;
+                return -EAGAIN;
+        }
+
+        /* Copy the video data to the buffer. Skip header packets, as they
+         * contain no data.
+         */
+        if (!is_header) {
+                maxlen = buf->buf.length - buf->buf.bytesused;
+                mem = queue->mem + buf->buf.m.offset + buf->buf.bytesused;
+                nbytes = min(len, maxlen);
+                memcpy(mem, data, nbytes);
+                buf->buf.bytesused += nbytes;
+
+                if (len > maxlen || buf->buf.bytesused == buf->buf.length) {
+                        uvc_trace(UVC_TRACE_FRAME, "Frame complete "
+                                  "(overflow).\n");
+                        buf->state = UVC_BUF_STATE_DONE;
+                }
+        }
+
+        return 0;
+}
+
+void uvc_video_decode_isight(struct urb *urb, struct uvc_video_device *video,
+                struct uvc_buffer *buf)
+{
+        int ret, i;
+
+        for (i = 0; i < urb->number_of_packets; ++i) {
+                if (urb->iso_frame_desc[i].status < 0) {
+                        uvc_trace(UVC_TRACE_FRAME, "USB isochronous frame "
+                                  "lost (%d).\n",
+                                  urb->iso_frame_desc[i].status);
+                }
+
+                /* Decode the payload packet.
+                 * uvc_video_decode is entered twice when a frame transition
+                 * has been detected because the end of frame can only be
+                 * reliably detected when the first packet of the new frame
+                 * is processed. The first pass detects the transition and
+                 * closes the previous frame's buffer, the second pass
+                 * processes the data of the first payload of the new frame.
+                 */
+                do {
+                        ret = isight_decode(&video->queue, buf,
+                                        urb->transfer_buffer +
+                                        urb->iso_frame_desc[i].offset,
+                                        urb->iso_frame_desc[i].actual_length);
+
+                        if (buf == NULL)
+                                break;
+
+                        if (buf->state == UVC_BUF_STATE_DONE ||
+                            buf->state == UVC_BUF_STATE_ERROR)
+                                buf = uvc_queue_next_buffer(&video->queue, buf);
+                } while (ret == -EAGAIN);
+        }
+}
diff --git a/drivers/media/video/uvc/uvc_queue.c b/drivers/media/video/uvc/uvc_queue.c
new file mode 100644
index 000000000000..0923f0e3b3d4
--- /dev/null
+++ b/drivers/media/video/uvc/uvc_queue.c
@@ -0,0 +1,477 @@
+/*
+ *      uvc_queue.c  --  USB Video Class driver - Buffers management
+ *
+ *      Copyright (C) 2005-2008
+ *          Laurent Pinchart (laurent.pinchart@skynet.be)
+ *
+ *      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/kernel.h>
+#include <linux/version.h>
+#include <linux/list.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+#include <linux/videodev2.h>
+#include <linux/vmalloc.h>
+#include <linux/wait.h>
+#include <asm/atomic.h>
+
+#include "uvcvideo.h"
+
+/* ------------------------------------------------------------------------
+ * Video buffers queue management.
+ *
+ * Video queues is initialized by uvc_queue_init(). The function performs
+ * basic initialization of the uvc_video_queue struct and never fails.
+ *
+ * Video buffer allocation and freeing are performed by uvc_alloc_buffers and
+ * uvc_free_buffers respectively. The former acquires the video queue lock,
+ * while the later must be called with the lock held (so that allocation can
+ * free previously allocated buffers). Trying to free buffers that are mapped
+ * to user space will return -EBUSY.
+ *
+ * Video buffers are managed using two queues. However, unlike most USB video
+ * drivers which use an in queue and an out queue, we use a main queue which
+ * holds all queued buffers (both 'empty' and 'done' buffers), and an irq
+ * queue which holds empty buffers. This design (copied from video-buf)
+ * minimizes locking in interrupt, as only one queue is shared between
+ * interrupt and user contexts.
+ *
+ * Use cases
+ * ---------
+ *
+ * Unless stated otherwise, all operations which modify the irq buffers queue
+ * are protected by the irq spinlock.
+ *
+ * 1. The user queues the buffers, starts streaming and dequeues a buffer.
+ *
+ *    The buffers are added to the main and irq queues. Both operations are
+ *    protected by the queue lock, and the latert is protected by the irq
+ *    spinlock as well.
+ *
+ *    The completion handler fetches a buffer from the irq queue and fills it
+ *    with video data. If no buffer is available (irq queue empty), the handler
+ *    returns immediately.
+ *
+ *    When the buffer is full, the completion handler removes it from the irq
+ *    queue, marks it as ready (UVC_BUF_STATE_DONE) and wake its wait queue.
+ *    At that point, any process waiting on the buffer will be woken up. If a
+ *    process tries to dequeue a buffer after it has been marked ready, the
+ *    dequeing will succeed immediately.
+ *
+ * 2. Buffers are queued, user is waiting on a buffer and the device gets
+ *    disconnected.
+ *
+ *    When the device is disconnected, the kernel calls the completion handler
+ *    with an appropriate status code. The handler marks all buffers in the
+ *    irq queue as being erroneous (UVC_BUF_STATE_ERROR) and wakes them up so
+ *    that any process waiting on a buffer gets woken up.
+ *
+ *    Waking up up the first buffer on the irq list is not enough, as the
+ *    process waiting on the buffer might restart the dequeue operation
+ *    immediately.
+ *
+ */
+
+void uvc_queue_init(struct uvc_video_queue *queue)
+{
+        mutex_init(&queue->mutex);
+        spin_lock_init(&queue->irqlock);
+        INIT_LIST_HEAD(&queue->mainqueue);
+        INIT_LIST_HEAD(&queue->irqqueue);
+}
+
+/*
+ * Allocate the video buffers.
+ *
+ * Pages are reserved to make sure they will not be swaped, as they will be
+ * filled in URB completion handler.
+ *
+ * Buffers will be individually mapped, so they must all be page aligned.
+ */
+int uvc_alloc_buffers(struct uvc_video_queue *queue, unsigned int nbuffers,
+                unsigned int buflength)
+{
+        unsigned int bufsize = PAGE_ALIGN(buflength);
+        unsigned int i;
+        void *mem = NULL;
+        int ret;
+
+        if (nbuffers > UVC_MAX_VIDEO_BUFFERS)
+                nbuffers = UVC_MAX_VIDEO_BUFFERS;
+
+        mutex_lock(&queue->mutex);
+
+        if ((ret = uvc_free_buffers(queue)) < 0)
+                goto done;
+
+        /* Bail out if no buffers should be allocated. */
+        if (nbuffers == 0)
+                goto done;
+
+        /* Decrement the number of buffers until allocation succeeds. */
+        for (; nbuffers > 0; --nbuffers) {
+                mem = vmalloc_32(nbuffers * bufsize);
+                if (mem != NULL)
+                        break;
+        }
+
+        if (mem == NULL) {
+                ret = -ENOMEM;
+                goto done;
+        }
+
+        for (i = 0; i < nbuffers; ++i) {
+                memset(&queue->buffer[i], 0, sizeof queue->buffer[i]);
+                queue->buffer[i].buf.index = i;
+                queue->buffer[i].buf.m.offset = i * bufsize;
+                queue->buffer[i].buf.length = buflength;
+                queue->buffer[i].buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+                queue->buffer[i].buf.sequence = 0;
+                queue->buffer[i].buf.field = V4L2_FIELD_NONE;
+                queue->buffer[i].buf.memory = V4L2_MEMORY_MMAP;
+                queue->buffer[i].buf.flags = 0;
+                init_waitqueue_head(&queue->buffer[i].wait);
+        }
+
+        queue->mem = mem;
+        queue->count = nbuffers;
+        queue->buf_size = bufsize;
+        ret = nbuffers;
+
+done:
+        mutex_unlock(&queue->mutex);
+        return ret;
+}
+
+/*
+ * Free the video buffers.
+ *
+ * This function must be called with the queue lock held.
+ */
+int uvc_free_buffers(struct uvc_video_queue *queue)
+{
+        unsigned int i;
+
+        for (i = 0; i < queue->count; ++i) {
+                if (queue->buffer[i].vma_use_count != 0)
+                        return -EBUSY;
+        }
+
+        if (queue->count) {
+                vfree(queue->mem);
+                queue->count = 0;
+        }
+
+        return 0;
+}
+
+static void __uvc_query_buffer(struct uvc_buffer *buf,
+                struct v4l2_buffer *v4l2_buf)
+{
+        memcpy(v4l2_buf, &buf->buf, sizeof *v4l2_buf);
+
+        if (buf->vma_use_count)
+                v4l2_buf->flags |= V4L2_BUF_FLAG_MAPPED;
+
+        switch (buf->state) {
+        case UVC_BUF_STATE_ERROR:
+        case UVC_BUF_STATE_DONE:
+                v4l2_buf->flags |= V4L2_BUF_FLAG_DONE;
+                break;
+        case UVC_BUF_STATE_QUEUED:
+        case UVC_BUF_STATE_ACTIVE:
+                v4l2_buf->flags |= V4L2_BUF_FLAG_QUEUED;
+                break;
+        case UVC_BUF_STATE_IDLE:
+        default:
+                break;
+        }
+}
+
+int uvc_query_buffer(struct uvc_video_queue *queue,
+                struct v4l2_buffer *v4l2_buf)
+{
+        int ret = 0;
+
+        mutex_lock(&queue->mutex);
+        if (v4l2_buf->index >= queue->count) {
+                ret = -EINVAL;
+                goto done;
+        }
+
+        __uvc_query_buffer(&queue->buffer[v4l2_buf->index], v4l2_buf);
+
+done:
+       mutex_unlock(&queue->mutex);
+       return ret;
+}
+
+/*
+ * Queue a video buffer. Attempting to queue a buffer that has already been
+ * queued will return -EINVAL.
+ */
+int uvc_queue_buffer(struct uvc_video_queue *queue,
+        struct v4l2_buffer *v4l2_buf)
+{
+        struct uvc_buffer *buf;
+        unsigned long flags;
+        int ret = 0;
+
+        uvc_trace(UVC_TRACE_CAPTURE, "Queuing buffer %u.\n", v4l2_buf->index);
+
+        if (v4l2_buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
+            v4l2_buf->memory != V4L2_MEMORY_MMAP) {
+                uvc_trace(UVC_TRACE_CAPTURE, "[E] Invalid buffer type (%u) "
+                        "and/or memory (%u).\n", v4l2_buf->type,
+                        v4l2_buf->memory);
+                return -EINVAL;
+        }
+
+        mutex_lock(&queue->mutex);
+        if (v4l2_buf->index >= queue->count)  {
+                uvc_trace(UVC_TRACE_CAPTURE, "[E] Out of range index.\n");
+                ret = -EINVAL;
+                goto done;
+        }
+
+        buf = &queue->buffer[v4l2_buf->index];
+        if (buf->state != UVC_BUF_STATE_IDLE) {
+                uvc_trace(UVC_TRACE_CAPTURE, "[E] Invalid buffer state "
+                        "(%u).\n", buf->state);
+                ret = -EINVAL;
+                goto done;
+        }
+
+        spin_lock_irqsave(&queue->irqlock, flags);
+        if (queue->flags & UVC_QUEUE_DISCONNECTED) {
+                spin_unlock_irqrestore(&queue->irqlock, flags);
+                ret = -ENODEV;
+                goto done;
+        }
+        buf->state = UVC_BUF_STATE_QUEUED;
+        buf->buf.bytesused = 0;
+        list_add_tail(&buf->stream, &queue->mainqueue);
+        list_add_tail(&buf->queue, &queue->irqqueue);
+        spin_unlock_irqrestore(&queue->irqlock, flags);
+
+done:
+        mutex_unlock(&queue->mutex);
+        return ret;
+}
+
+static int uvc_queue_waiton(struct uvc_buffer *buf, int nonblocking)
+{
+        if (nonblocking) {
+                return (buf->state != UVC_BUF_STATE_QUEUED &&
+                        buf->state != UVC_BUF_STATE_ACTIVE)
+                        ? 0 : -EAGAIN;
+        }
+
+        return wait_event_interruptible(buf->wait,
+                buf->state != UVC_BUF_STATE_QUEUED &&
+                buf->state != UVC_BUF_STATE_ACTIVE);
+}
+
+/*
+ * Dequeue a video buffer. If nonblocking is false, block until a buffer is
+ * available.
+ */
+int uvc_dequeue_buffer(struct uvc_video_queue *queue,
+                struct v4l2_buffer *v4l2_buf, int nonblocking)
+{
+        struct uvc_buffer *buf;
+        int ret = 0;
+
+        if (v4l2_buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
+            v4l2_buf->memory != V4L2_MEMORY_MMAP) {
+                uvc_trace(UVC_TRACE_CAPTURE, "[E] Invalid buffer type (%u) "
+                        "and/or memory (%u).\n", v4l2_buf->type,
+                        v4l2_buf->memory);
+                return -EINVAL;
+        }
+
+        mutex_lock(&queue->mutex);
+        if (list_empty(&queue->mainqueue)) {
+                uvc_trace(UVC_TRACE_CAPTURE, "[E] Empty buffer queue.\n");
+                ret = -EINVAL;
+                goto done;
+        }
+
+        buf = list_first_entry(&queue->mainqueue, struct uvc_buffer, stream);
+        if ((ret = uvc_queue_waiton(buf, nonblocking)) < 0)
+                goto done;
+
+        uvc_trace(UVC_TRACE_CAPTURE, "Dequeuing buffer %u (%u, %u bytes).\n",
+                buf->buf.index, buf->state, buf->buf.bytesused);
+
+        switch (buf->state) {
+        case UVC_BUF_STATE_ERROR:
+                uvc_trace(UVC_TRACE_CAPTURE, "[W] Corrupted data "
+                        "(transmission error).\n");
+                ret = -EIO;
+        case UVC_BUF_STATE_DONE:
+                buf->state = UVC_BUF_STATE_IDLE;
+                break;
+
+        case UVC_BUF_STATE_IDLE:
+        case UVC_BUF_STATE_QUEUED:
+        case UVC_BUF_STATE_ACTIVE:
+        default:
+                uvc_trace(UVC_TRACE_CAPTURE, "[E] Invalid buffer state %u "
+                        "(driver bug?).\n", buf->state);
+                ret = -EINVAL;
+                goto done;
+        }
+
+        list_del(&buf->stream);
+        __uvc_query_buffer(buf, v4l2_buf);
+
+done:
+        mutex_unlock(&queue->mutex);
+        return ret;
+}
+
+/*
+ * Poll the video queue.
+ *
+ * This function implements video queue polling and is intended to be used by
+ * the device poll handler.
+ */
+unsigned int uvc_queue_poll(struct uvc_video_queue *queue, struct file *file,
+                poll_table *wait)
+{
+        struct uvc_buffer *buf;
+        unsigned int mask = 0;
+
+        mutex_lock(&queue->mutex);
+        if (list_empty(&queue->mainqueue)) {
+                mask |= POLLERR;
+                goto done;
+        }
+        buf = list_first_entry(&queue->mainqueue, struct uvc_buffer, stream);
+
+        poll_wait(file, &buf->wait, wait);
+        if (buf->state == UVC_BUF_STATE_DONE ||
+            buf->state == UVC_BUF_STATE_ERROR)
+                mask |= POLLIN | POLLRDNORM;
+
+done:
+        mutex_unlock(&queue->mutex);
+        return mask;
+}
+
+/*
+ * Enable or disable the video buffers queue.
+ *
+ * The queue must be enabled before starting video acquisition and must be
+ * disabled after stopping it. This ensures that the video buffers queue
+ * state can be properly initialized before buffers are accessed from the
+ * interrupt handler.
+ *
+ * Enabling the video queue initializes parameters (such as sequence number,
+ * sync pattern, ...). If the queue is already enabled, return -EBUSY.
+ *
+ * Disabling the video queue cancels the queue and removes all buffers from
+ * the main queue.
+ *
+ * This function can't be called from interrupt context. Use
+ * uvc_queue_cancel() instead.
+ */
+int uvc_queue_enable(struct uvc_video_queue *queue, int enable)
+{
+        unsigned int i;
+        int ret = 0;
+
+        mutex_lock(&queue->mutex);
+        if (enable) {
+                if (uvc_queue_streaming(queue)) {
+                        ret = -EBUSY;
+                        goto done;
+                }
+                queue->sequence = 0;
+                queue->flags |= UVC_QUEUE_STREAMING;
+        } else {
+                uvc_queue_cancel(queue, 0);
+                INIT_LIST_HEAD(&queue->mainqueue);
+
+                for (i = 0; i < queue->count; ++i)
+                        queue->buffer[i].state = UVC_BUF_STATE_IDLE;
+
+                queue->flags &= ~UVC_QUEUE_STREAMING;
+        }
+
+done:
+        mutex_unlock(&queue->mutex);
+        return ret;
+}
+
+/*
+ * Cancel the video buffers queue.
+ *
+ * Cancelling the queue marks all buffers on the irq queue as erroneous,
+ * wakes them up and remove them from the queue.
+ *
+ * If the disconnect parameter is set, further calls to uvc_queue_buffer will
+ * fail with -ENODEV.
+ *
+ * This function acquires the irq spinlock and can be called from interrupt
+ * context.
+ */
+void uvc_queue_cancel(struct uvc_video_queue *queue, int disconnect)
+{
+        struct uvc_buffer *buf;
+        unsigned long flags;
+
+        spin_lock_irqsave(&queue->irqlock, flags);
+        while (!list_empty(&queue->irqqueue)) {
+                buf = list_first_entry(&queue->irqqueue, struct uvc_buffer,
+                                       queue);
+                list_del(&buf->queue);
+                buf->state = UVC_BUF_STATE_ERROR;
+                wake_up(&buf->wait);
+        }
+        /* This must be protected by the irqlock spinlock to avoid race
+         * conditions between uvc_queue_buffer and the disconnection event that
+         * could result in an interruptible wait in uvc_dequeue_buffer. Do not
+         * blindly replace this logic by checking for the UVC_DEV_DISCONNECTED
+         * state outside the queue code.
+         */
+        if (disconnect)
+                queue->flags |= UVC_QUEUE_DISCONNECTED;
+        spin_unlock_irqrestore(&queue->irqlock, flags);
+}
+
+struct uvc_buffer *uvc_queue_next_buffer(struct uvc_video_queue *queue,
+                struct uvc_buffer *buf)
+{
+        struct uvc_buffer *nextbuf;
+        unsigned long flags;
+
+        if ((queue->flags & UVC_QUEUE_DROP_INCOMPLETE) &&
+            buf->buf.length != buf->buf.bytesused) {
+                buf->state = UVC_BUF_STATE_QUEUED;
+                buf->buf.bytesused = 0;
+                return buf;
+        }
+
+        spin_lock_irqsave(&queue->irqlock, flags);
+        list_del(&buf->queue);
+        if (!list_empty(&queue->irqqueue))
+                nextbuf = list_first_entry(&queue->irqqueue, struct uvc_buffer,
+                                           queue);
+        else
+                nextbuf = NULL;
+        spin_unlock_irqrestore(&queue->irqlock, flags);
+
+        buf->buf.sequence = queue->sequence++;
+        do_gettimeofday(&buf->buf.timestamp);
+
+        wake_up(&buf->wait);
+        return nextbuf;
+}
diff --git a/drivers/media/video/uvc/uvc_status.c b/drivers/media/video/uvc/uvc_status.c
new file mode 100644
index 000000000000..be9084e5eace
--- /dev/null
+++ b/drivers/media/video/uvc/uvc_status.c
@@ -0,0 +1,207 @@
+/*
+ *      uvc_status.c  --  USB Video Class driver - Status endpoint
+ *
+ *      Copyright (C) 2007-2008
+ *          Laurent Pinchart (laurent.pinchart@skynet.be)
+ *
+ *      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/kernel.h>
+#include <linux/version.h>
+#include <linux/input.h>
+#include <linux/usb.h>
+#include <linux/usb/input.h>
+
+#include "uvcvideo.h"
+
+/* --------------------------------------------------------------------------
+ * Input device
+ */
+static int uvc_input_init(struct uvc_device *dev)
+{
+        struct usb_device *udev = dev->udev;
+        struct input_dev *input;
+        char *phys = NULL;
+        int ret;
+
+        input = input_allocate_device();
+        if (input == NULL)
+                return -ENOMEM;
+
+        phys = kmalloc(6 + strlen(udev->bus->bus_name) + strlen(udev->devpath),
+                        GFP_KERNEL);
+        if (phys == NULL) {
+                ret = -ENOMEM;
+                goto error;
+        }
+        sprintf(phys, "usb-%s-%s", udev->bus->bus_name, udev->devpath);
+
+        input->name = dev->name;
+        input->phys = phys;
+        usb_to_input_id(udev, &input->id);
+        input->dev.parent = &dev->intf->dev;
+
+        set_bit(EV_KEY, input->evbit);
+        set_bit(BTN_0, input->keybit);
+
+        if ((ret = input_register_device(input)) < 0)
+                goto error;
+
+        dev->input = input;
+        return 0;
+
+error:
+        input_free_device(input);
+        kfree(phys);
+        return ret;
+}
+
+static void uvc_input_cleanup(struct uvc_device *dev)
+{
+        if (dev->input)
+                input_unregister_device(dev->input);
+}
+
+/* --------------------------------------------------------------------------
+ * Status interrupt endpoint
+ */
+static void uvc_event_streaming(struct uvc_device *dev, __u8 *data, int len)
+{
+        if (len < 3) {
+                uvc_trace(UVC_TRACE_STATUS, "Invalid streaming status event "
+                                "received.\n");
+                return;
+        }
+
+        if (data[2] == 0) {
+                if (len < 4)
+                        return;
+                uvc_trace(UVC_TRACE_STATUS, "Button (intf %u) %s len %d\n",
+                        data[1], data[3] ? "pressed" : "released", len);
+                if (dev->input)
+                        input_report_key(dev->input, BTN_0, data[3]);
+        } else {
+                uvc_trace(UVC_TRACE_STATUS, "Stream %u error event %02x %02x "
+                        "len %d.\n", data[1], data[2], data[3], len);
+        }
+}
+
+static void uvc_event_control(struct uvc_device *dev, __u8 *data, int len)
+{
+        char *attrs[3] = { "value", "info", "failure" };
+
+        if (len < 6 || data[2] != 0 || data[4] > 2) {
+                uvc_trace(UVC_TRACE_STATUS, "Invalid control status event "
+                                "received.\n");
+                return;
+        }
+
+        uvc_trace(UVC_TRACE_STATUS, "Control %u/%u %s change len %d.\n",
+                data[1], data[3], attrs[data[4]], len);
+}
+
+static void uvc_status_complete(struct urb *urb)
+{
+        struct uvc_device *dev = urb->context;
+        int len, ret;
+
+        switch (urb->status) {
+        case 0:
+                break;
+
+        case -ENOENT:           /* usb_kill_urb() called. */
+        case -ECONNRESET:       /* usb_unlink_urb() called. */
+        case -ESHUTDOWN:        /* The endpoint is being disabled. */
+        case -EPROTO:           /* Device is disconnected (reported by some
+                                 * host controller). */
+                return;
+
+        default:
+                uvc_printk(KERN_WARNING, "Non-zero status (%d) in status "
+                        "completion handler.\n", urb->status);
+                return;
+        }
+
+        len = urb->actual_length;
+        if (len > 0) {
+                switch (dev->status[0] & 0x0f) {
+                case UVC_STATUS_TYPE_CONTROL:
+                        uvc_event_control(dev, dev->status, len);
+                        break;
+
+                case UVC_STATUS_TYPE_STREAMING:
+                        uvc_event_streaming(dev, dev->status, len);
+                        break;
+
+                default:
+                        uvc_printk(KERN_INFO, "unknown event type %u.\n",
+                                dev->status[0]);
+                        break;
+                }
+        }
+
+        /* Resubmit the URB. */
+        urb->interval = dev->int_ep->desc.bInterval;
+        if ((ret = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
+                uvc_printk(KERN_ERR, "Failed to resubmit status URB (%d).\n",
+                        ret);
+        }
+}
+
+int uvc_status_init(struct uvc_device *dev)
+{
+        struct usb_host_endpoint *ep = dev->int_ep;
+        unsigned int pipe;
+        int interval;
+
+        if (ep == NULL)
+                return 0;
+
+        uvc_input_init(dev);
+
+        dev->int_urb = usb_alloc_urb(0, GFP_KERNEL);
+        if (dev->int_urb == NULL)
+                return -ENOMEM;
+
+        pipe = usb_rcvintpipe(dev->udev, ep->desc.bEndpointAddress);
+
+        /* For high-speed interrupt endpoints, the bInterval value is used as
+         * an exponent of two. Some developers forgot about it.
+         */
+        interval = ep->desc.bInterval;
+        if (interval > 16 && dev->udev->speed == USB_SPEED_HIGH &&
+            (dev->quirks & UVC_QUIRK_STATUS_INTERVAL))
+                interval = fls(interval) - 1;
+
+        usb_fill_int_urb(dev->int_urb, dev->udev, pipe,
+                dev->status, sizeof dev->status, uvc_status_complete,
+                dev, interval);
+
+        return usb_submit_urb(dev->int_urb, GFP_KERNEL);
+}
+
+void uvc_status_cleanup(struct uvc_device *dev)
+{
+        usb_kill_urb(dev->int_urb);
+        usb_free_urb(dev->int_urb);
+        uvc_input_cleanup(dev);
+}
+
+int uvc_status_suspend(struct uvc_device *dev)
+{
+        usb_kill_urb(dev->int_urb);
+        return 0;
+}
+
+int uvc_status_resume(struct uvc_device *dev)
+{
+        if (dev->int_urb == NULL)
+                return 0;
+
+        return usb_submit_urb(dev->int_urb, GFP_KERNEL);
+}
diff --git a/drivers/media/video/uvc/uvc_v4l2.c b/drivers/media/video/uvc/uvc_v4l2.c
new file mode 100644
index 000000000000..2e0a66575bb4
--- /dev/null
+++ b/drivers/media/video/uvc/uvc_v4l2.c
@@ -0,0 +1,1105 @@
+/*
+ *      uvc_v4l2.c  --  USB Video Class driver - V4L2 API
+ *
+ *      Copyright (C) 2005-2008
+ *          Laurent Pinchart (laurent.pinchart@skynet.be)
+ *
+ *      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/kernel.h>
+#include <linux/version.h>
+#include <linux/list.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+#include <linux/videodev2.h>
+#include <linux/vmalloc.h>
+#include <linux/mm.h>
+#include <linux/wait.h>
+#include <asm/atomic.h>
+
+#include <media/v4l2-common.h>
+
+#include "uvcvideo.h"
+
+/* ------------------------------------------------------------------------
+ * V4L2 interface
+ */
+
+/*
+ * Mapping V4L2 controls to UVC controls can be straighforward if done well.
+ * Most of the UVC controls exist in V4L2, and can be mapped directly. Some
+ * must be grouped (for instance the Red Balance, Blue Balance and Do White
+ * Balance V4L2 controls use the White Balance Component UVC control) or
+ * otherwise translated. The approach we take here is to use a translation
+ * table for the controls which can be mapped directly, and handle the others
+ * manually.
+ */
+static int uvc_v4l2_query_menu(struct uvc_video_device *video,
+        struct v4l2_querymenu *query_menu)
+{
+        struct uvc_menu_info *menu_info;
+        struct uvc_control_mapping *mapping;
+        struct uvc_control *ctrl;
+
+        ctrl = uvc_find_control(video, query_menu->id, &mapping);
+        if (ctrl == NULL || mapping->v4l2_type != V4L2_CTRL_TYPE_MENU)
+                return -EINVAL;
+
+        if (query_menu->index >= mapping->menu_count)
+                return -EINVAL;
+
+        menu_info = &mapping->menu_info[query_menu->index];
+        strncpy(query_menu->name, menu_info->name, 32);
+        return 0;
+}
+
+/*
+ * Find the frame interval closest to the requested frame interval for the
+ * given frame format and size. This should be done by the device as part of
+ * the Video Probe and Commit negotiation, but some hardware don't implement
+ * that feature.
+ */
+static __u32 uvc_try_frame_interval(struct uvc_frame *frame, __u32 interval)
+{
+        unsigned int i;
+
+        if (frame->bFrameIntervalType) {
+                __u32 best = -1, dist;
+
+                for (i = 0; i < frame->bFrameIntervalType; ++i) {
+                        dist = interval > frame->dwFrameInterval[i]
+                             ? interval - frame->dwFrameInterval[i]
+                             : frame->dwFrameInterval[i] - interval;
+
+                        if (dist > best)
+                                break;
+
+                        best = dist;
+                }
+
+                interval = frame->dwFrameInterval[i-1];
+        } else {
+                const __u32 min = frame->dwFrameInterval[0];
+                const __u32 max = frame->dwFrameInterval[1];
+                const __u32 step = frame->dwFrameInterval[2];
+
+                interval = min + (interval - min + step/2) / step * step;
+                if (interval > max)
+                        interval = max;
+        }
+
+        return interval;
+}
+
+static int uvc_v4l2_try_format(struct uvc_video_device *video,
+        struct v4l2_format *fmt, struct uvc_streaming_control *probe,
+        struct uvc_format **uvc_format, struct uvc_frame **uvc_frame)
+{
+        struct uvc_format *format = NULL;
+        struct uvc_frame *frame = NULL;
+        __u16 rw, rh;
+        unsigned int d, maxd;
+        unsigned int i;
+        __u32 interval;
+        int ret = 0;
+        __u8 *fcc;
+
+        if (fmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+                return -EINVAL;
+
+        fcc = (__u8 *)&fmt->fmt.pix.pixelformat;
+        uvc_trace(UVC_TRACE_FORMAT, "Trying format 0x%08x (%c%c%c%c): %ux%u.\n",
+                        fmt->fmt.pix.pixelformat,
+                        fcc[0], fcc[1], fcc[2], fcc[3],
+                        fmt->fmt.pix.width, fmt->fmt.pix.height);
+
+        /* Check if the hardware supports the requested format. */
+        for (i = 0; i < video->streaming->nformats; ++i) {
+                format = &video->streaming->format[i];
+                if (format->fcc == fmt->fmt.pix.pixelformat)
+                        break;
+        }
+
+        if (format == NULL || format->fcc != fmt->fmt.pix.pixelformat) {
+                uvc_trace(UVC_TRACE_FORMAT, "Unsupported format 0x%08x.\n",
+                                fmt->fmt.pix.pixelformat);
+                return -EINVAL;
+        }
+
+        /* Find the closest image size. The distance between image sizes is
+         * the size in pixels of the non-overlapping regions between the
+         * requested size and the frame-specified size.
+         */
+        rw = fmt->fmt.pix.width;
+        rh = fmt->fmt.pix.height;
+        maxd = (unsigned int)-1;
+
+        for (i = 0; i < format->nframes; ++i) {
+                __u16 w = format->frame[i].wWidth;
+                __u16 h = format->frame[i].wHeight;
+
+                d = min(w, rw) * min(h, rh);
+                d = w*h + rw*rh - 2*d;
+                if (d < maxd) {
+                        maxd = d;
+                        frame = &format->frame[i];
+                }
+
+                if (maxd == 0)
+                        break;
+        }
+
+        if (frame == NULL) {
+                uvc_trace(UVC_TRACE_FORMAT, "Unsupported size %ux%u.\n",
+                                fmt->fmt.pix.width, fmt->fmt.pix.height);
+                return -EINVAL;
+        }
+
+        /* Use the default frame interval. */
+        interval = frame->dwDefaultFrameInterval;
+        uvc_trace(UVC_TRACE_FORMAT, "Using default frame interval %u.%u us "
+                "(%u.%u fps).\n", interval/10, interval%10, 10000000/interval,
+                (100000000/interval)%10);
+
+        /* Set the format index, frame index and frame interval. */
+        memset(probe, 0, sizeof *probe);
+        probe->bmHint = 1;      /* dwFrameInterval */
+        probe->bFormatIndex = format->index;
+        probe->bFrameIndex = frame->bFrameIndex;
+        probe->dwFrameInterval = uvc_try_frame_interval(frame, interval);
+        /* Some webcams stall the probe control set request when the
+         * dwMaxVideoFrameSize field is set to zero. The UVC specification
+         * clearly states that the field is read-only from the host, so this
+         * is a webcam bug. Set dwMaxVideoFrameSize to the value reported by
+         * the webcam to work around the problem.
+         *
+         * The workaround could probably be enabled for all webcams, so the
+         * quirk can be removed if needed. It's currently useful to detect
+         * webcam bugs and fix them before they hit the market (providing
+         * developers test their webcams with the Linux driver as well as with
+         * the Windows driver).
+         */
+        if (video->dev->quirks & UVC_QUIRK_PROBE_EXTRAFIELDS)
+                probe->dwMaxVideoFrameSize =
+                        video->streaming->ctrl.dwMaxVideoFrameSize;
+
+        /* Probe the device */
+        if ((ret = uvc_probe_video(video, probe)) < 0)
+                goto done;
+
+        fmt->fmt.pix.width = frame->wWidth;
+        fmt->fmt.pix.height = frame->wHeight;
+        fmt->fmt.pix.field = V4L2_FIELD_NONE;
+        fmt->fmt.pix.bytesperline = format->bpp * frame->wWidth / 8;
+        fmt->fmt.pix.sizeimage = probe->dwMaxVideoFrameSize;
+        fmt->fmt.pix.colorspace = format->colorspace;
+        fmt->fmt.pix.priv = 0;
+
+        if (uvc_format != NULL)
+                *uvc_format = format;
+        if (uvc_frame != NULL)
+                *uvc_frame = frame;
+
+done:
+        return ret;
+}
+
+static int uvc_v4l2_get_format(struct uvc_video_device *video,
+        struct v4l2_format *fmt)
+{
+        struct uvc_format *format = video->streaming->cur_format;
+        struct uvc_frame *frame = video->streaming->cur_frame;
+
+        if (fmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+                return -EINVAL;
+
+        if (format == NULL || frame == NULL)
+                return -EINVAL;
+
+        fmt->fmt.pix.pixelformat = format->fcc;
+        fmt->fmt.pix.width = frame->wWidth;
+        fmt->fmt.pix.height = frame->wHeight;
+        fmt->fmt.pix.field = V4L2_FIELD_NONE;
+        fmt->fmt.pix.bytesperline = format->bpp * frame->wWidth / 8;
+        fmt->fmt.pix.sizeimage = video->streaming->ctrl.dwMaxVideoFrameSize;
+        fmt->fmt.pix.colorspace = format->colorspace;
+        fmt->fmt.pix.priv = 0;
+
+        return 0;
+}
+
+static int uvc_v4l2_set_format(struct uvc_video_device *video,
+        struct v4l2_format *fmt)
+{
+        struct uvc_streaming_control probe;
+        struct uvc_format *format;
+        struct uvc_frame *frame;
+        int ret;
+
+        if (fmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+                return -EINVAL;
+
+        if (uvc_queue_streaming(&video->queue))
+                return -EBUSY;
+
+        ret = uvc_v4l2_try_format(video, fmt, &probe, &format, &frame);
+        if (ret < 0)
+                return ret;
+
+        if ((ret = uvc_set_video_ctrl(video, &probe, 0)) < 0)
+                return ret;
+
+        memcpy(&video->streaming->ctrl, &probe, sizeof probe);
+        video->streaming->cur_format = format;
+        video->streaming->cur_frame = frame;
+
+        return 0;
+}
+
+static int uvc_v4l2_get_streamparm(struct uvc_video_device *video,
+                struct v4l2_streamparm *parm)
+{
+        uint32_t numerator, denominator;
+
+        if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+                return -EINVAL;
+
+        numerator = video->streaming->ctrl.dwFrameInterval;
+        denominator = 10000000;
+        uvc_simplify_fraction(&numerator, &denominator, 8, 333);
+
+        memset(parm, 0, sizeof *parm);
+        parm->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+        parm->parm.capture.capability = V4L2_CAP_TIMEPERFRAME;
+        parm->parm.capture.capturemode = 0;
+        parm->parm.capture.timeperframe.numerator = numerator;
+        parm->parm.capture.timeperframe.denominator = denominator;
+        parm->parm.capture.extendedmode = 0;
+        parm->parm.capture.readbuffers = 0;
+
+        return 0;
+}
+
+static int uvc_v4l2_set_streamparm(struct uvc_video_device *video,
+                struct v4l2_streamparm *parm)
+{
+        struct uvc_frame *frame = video->streaming->cur_frame;
+        struct uvc_streaming_control probe;
+        uint32_t interval;
+        int ret;
+
+        if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+                return -EINVAL;
+
+        if (uvc_queue_streaming(&video->queue))
+                return -EBUSY;
+
+        memcpy(&probe, &video->streaming->ctrl, sizeof probe);
+        interval = uvc_fraction_to_interval(
+                        parm->parm.capture.timeperframe.numerator,
+                        parm->parm.capture.timeperframe.denominator);
+
+        uvc_trace(UVC_TRACE_FORMAT, "Setting frame interval to %u/%u (%u).\n",
+                        parm->parm.capture.timeperframe.numerator,
+                        parm->parm.capture.timeperframe.denominator,
+                        interval);
+        probe.dwFrameInterval = uvc_try_frame_interval(frame, interval);
+
+        /* Probe the device with the new settings. */
+        if ((ret = uvc_probe_video(video, &probe)) < 0)
+                return ret;
+
+        /* Commit the new settings. */
+        if ((ret = uvc_set_video_ctrl(video, &probe, 0)) < 0)
+                return ret;
+
+        memcpy(&video->streaming->ctrl, &probe, sizeof probe);
+
+        /* Return the actual frame period. */
+        parm->parm.capture.timeperframe.numerator = probe.dwFrameInterval;
+        parm->parm.capture.timeperframe.denominator = 10000000;
+        uvc_simplify_fraction(&parm->parm.capture.timeperframe.numerator,
+                                &parm->parm.capture.timeperframe.denominator,
+                                8, 333);
+
+        return 0;
+}
+
+/* ------------------------------------------------------------------------
+ * Privilege management
+ */
+
+/*
+ * Privilege management is the multiple-open implementation basis. The current
+ * implementation is completely transparent for the end-user and doesn't
+ * require explicit use of the VIDIOC_G_PRIORITY and VIDIOC_S_PRIORITY ioctls.
+ * Those ioctls enable finer control on the device (by making possible for a
+ * user to request exclusive access to a device), but are not mature yet.
+ * Switching to the V4L2 priority mechanism might be considered in the future
+ * if this situation changes.
+ *
+ * Each open instance of a UVC device can either be in a privileged or
+ * unprivileged state. Only a single instance can be in a privileged state at
+ * a given time. Trying to perform an operation which requires privileges will
+ * automatically acquire the required privileges if possible, or return -EBUSY
+ * otherwise. Privileges are dismissed when closing the instance.
+ *
+ * Operations which require privileges are:
+ *
+ * - VIDIOC_S_INPUT
+ * - VIDIOC_S_PARM
+ * - VIDIOC_S_FMT
+ * - VIDIOC_TRY_FMT
+ * - VIDIOC_REQBUFS
+ */
+static int uvc_acquire_privileges(struct uvc_fh *handle)
+{
+        int ret = 0;
+
+        /* Always succeed if the handle is already privileged. */
+        if (handle->state == UVC_HANDLE_ACTIVE)
+                return 0;
+
+        /* Check if the device already has a privileged handle. */
+        mutex_lock(&uvc_driver.open_mutex);
+        if (atomic_inc_return(&handle->device->active) != 1) {
+                atomic_dec(&handle->device->active);
+                ret = -EBUSY;
+                goto done;
+        }
+
+        handle->state = UVC_HANDLE_ACTIVE;
+
+done:
+        mutex_unlock(&uvc_driver.open_mutex);
+        return ret;
+}
+
+static void uvc_dismiss_privileges(struct uvc_fh *handle)
+{
+        if (handle->state == UVC_HANDLE_ACTIVE)
+                atomic_dec(&handle->device->active);
+
+        handle->state = UVC_HANDLE_PASSIVE;
+}
+
+static int uvc_has_privileges(struct uvc_fh *handle)
+{
+        return handle->state == UVC_HANDLE_ACTIVE;
+}
+
+/* ------------------------------------------------------------------------
+ * V4L2 file operations
+ */
+
+static int uvc_v4l2_open(struct inode *inode, struct file *file)
+{
+        struct video_device *vdev;
+        struct uvc_video_device *video;
+        struct uvc_fh *handle;
+        int ret = 0;
+
+        uvc_trace(UVC_TRACE_CALLS, "uvc_v4l2_open\n");
+        mutex_lock(&uvc_driver.open_mutex);
+        vdev = video_devdata(file);
+        video = video_get_drvdata(vdev);
+
+        if (video->dev->state & UVC_DEV_DISCONNECTED) {
+                ret = -ENODEV;
+                goto done;
+        }
+
+        ret = usb_autopm_get_interface(video->dev->intf);
+        if (ret < 0)
+                goto done;
+
+        /* Create the device handle. */
+        handle = kzalloc(sizeof *handle, GFP_KERNEL);
+        if (handle == NULL) {
+                usb_autopm_put_interface(video->dev->intf);
+                ret = -ENOMEM;
+                goto done;
+        }
+
+        handle->device = video;
+        handle->state = UVC_HANDLE_PASSIVE;
+        file->private_data = handle;
+
+        kref_get(&video->dev->kref);
+
+done:
+        mutex_unlock(&uvc_driver.open_mutex);
+        return ret;
+}
+
+static int uvc_v4l2_release(struct inode *inode, struct file *file)
+{
+        struct video_device *vdev = video_devdata(file);
+        struct uvc_video_device *video = video_get_drvdata(vdev);
+        struct uvc_fh *handle = (struct uvc_fh *)file->private_data;
+
+        uvc_trace(UVC_TRACE_CALLS, "uvc_v4l2_release\n");
+
+        /* Only free resources if this is a privileged handle. */
+        if (uvc_has_privileges(handle)) {
+                uvc_video_enable(video, 0);
+
+                mutex_lock(&video->queue.mutex);
+                if (uvc_free_buffers(&video->queue) < 0)
+                        uvc_printk(KERN_ERR, "uvc_v4l2_release: Unable to "
+                                        "free buffers.\n");
+                mutex_unlock(&video->queue.mutex);
+        }
+
+        /* Release the file handle. */
+        uvc_dismiss_privileges(handle);
+        kfree(handle);
+        file->private_data = NULL;
+
+        usb_autopm_put_interface(video->dev->intf);
+        kref_put(&video->dev->kref, uvc_delete);
+        return 0;
+}
+
+static int uvc_v4l2_do_ioctl(struct inode *inode, struct file *file,
+                     unsigned int cmd, void *arg)
+{
+        struct video_device *vdev = video_devdata(file);
+        struct uvc_video_device *video = video_get_drvdata(vdev);
+        struct uvc_fh *handle = (struct uvc_fh *)file->private_data;
+        int ret = 0;
+
+        if (uvc_trace_param & UVC_TRACE_IOCTL)
+                v4l_printk_ioctl(cmd);
+
+        switch (cmd) {
+        /* Query capabilities */
+        case VIDIOC_QUERYCAP:
+        {
+                struct v4l2_capability *cap = arg;
+
+                memset(cap, 0, sizeof *cap);
+                strncpy(cap->driver, "uvcvideo", sizeof cap->driver);
+                strncpy(cap->card, vdev->name, 32);
+                strncpy(cap->bus_info, video->dev->udev->bus->bus_name,
+                        sizeof cap->bus_info);
+                cap->version = DRIVER_VERSION_NUMBER;
+                cap->capabilities = V4L2_CAP_VIDEO_CAPTURE
+                                  | V4L2_CAP_STREAMING;
+                break;
+        }
+
+        /* Get, Set & Query control */
+        case VIDIOC_QUERYCTRL:
+                return uvc_query_v4l2_ctrl(video, arg);
+
+        case VIDIOC_G_CTRL:
+        {
+                struct v4l2_control *ctrl = arg;
+                struct v4l2_ext_control xctrl;
+
+                memset(&xctrl, 0, sizeof xctrl);
+                xctrl.id = ctrl->id;
+
+                uvc_ctrl_begin(video);
+                ret = uvc_ctrl_get(video, &xctrl);
+                uvc_ctrl_rollback(video);
+                if (ret >= 0)
+                        ctrl->value = xctrl.value;
+                break;
+        }
+
+        case VIDIOC_S_CTRL:
+        {
+                struct v4l2_control *ctrl = arg;
+                struct v4l2_ext_control xctrl;
+
+                memset(&xctrl, 0, sizeof xctrl);
+                xctrl.id = ctrl->id;
+                xctrl.value = ctrl->value;
+
+                uvc_ctrl_begin(video);
+                ret = uvc_ctrl_set(video, &xctrl);
+                if (ret < 0) {
+                        uvc_ctrl_rollback(video);
+                        return ret;
+                }
+                ret = uvc_ctrl_commit(video);
+                break;
+        }
+
+        case VIDIOC_QUERYMENU:
+                return uvc_v4l2_query_menu(video, arg);
+
+        case VIDIOC_G_EXT_CTRLS:
+        {
+                struct v4l2_ext_controls *ctrls = arg;
+                struct v4l2_ext_control *ctrl = ctrls->controls;
+                unsigned int i;
+
+                uvc_ctrl_begin(video);
+                for (i = 0; i < ctrls->count; ++ctrl, ++i) {
+                        ret = uvc_ctrl_get(video, ctrl);
+                        if (ret < 0) {
+                                uvc_ctrl_rollback(video);
+                                ctrls->error_idx = i;
+                                return ret;
+                        }
+                }
+                ctrls->error_idx = 0;
+                ret = uvc_ctrl_rollback(video);
+                break;
+        }
+
+        case VIDIOC_S_EXT_CTRLS:
+        case VIDIOC_TRY_EXT_CTRLS:
+        {
+                struct v4l2_ext_controls *ctrls = arg;
+                struct v4l2_ext_control *ctrl = ctrls->controls;
+                unsigned int i;
+
+                ret = uvc_ctrl_begin(video);
+                if (ret < 0)
+                        return ret;
+
+                for (i = 0; i < ctrls->count; ++ctrl, ++i) {
+                        ret = uvc_ctrl_set(video, ctrl);
+                        if (ret < 0) {
+                                uvc_ctrl_rollback(video);
+                                ctrls->error_idx = i;
+                                return ret;
+                        }
+                }
+
+                ctrls->error_idx = 0;
+
+                if (cmd == VIDIOC_S_EXT_CTRLS)
+                        ret = uvc_ctrl_commit(video);
+                else
+                        ret = uvc_ctrl_rollback(video);
+                break;
+        }
+
+        /* Get, Set & Enum input */
+        case VIDIOC_ENUMINPUT:
+        {
+                const struct uvc_entity *selector = video->selector;
+                struct v4l2_input *input = arg;
+                struct uvc_entity *iterm = NULL;
+                u32 index = input->index;
+                int pin = 0;
+
+                if (selector == NULL ||
+                    (video->dev->quirks & UVC_QUIRK_IGNORE_SELECTOR_UNIT)) {
+                        if (index != 0)
+                                return -EINVAL;
+                        iterm = list_first_entry(&video->iterms,
+                                        struct uvc_entity, chain);
+                        pin = iterm->id;
+                } else if (pin < selector->selector.bNrInPins) {
+                        pin = selector->selector.baSourceID[index];
+                        list_for_each_entry(iterm, video->iterms.next, chain) {
+                                if (iterm->id == pin)
+                                        break;
+                        }
+                }
+
+                if (iterm == NULL || iterm->id != pin)
+                        return -EINVAL;
+
+                memset(input, 0, sizeof *input);
+                input->index = index;
+                strncpy(input->name, iterm->name, sizeof input->name);
+                if (UVC_ENTITY_TYPE(iterm) == ITT_CAMERA)
+                        input->type = V4L2_INPUT_TYPE_CAMERA;
+                break;
+        }
+
+        case VIDIOC_G_INPUT:
+        {
+                u8 input;
+
+                if (video->selector == NULL ||
+                    (video->dev->quirks & UVC_QUIRK_IGNORE_SELECTOR_UNIT)) {
+                        *(int *)arg = 0;
+                        break;
+                }
+
+                ret = uvc_query_ctrl(video->dev, GET_CUR, video->selector->id,
+                        video->dev->intfnum, SU_INPUT_SELECT_CONTROL,
+                        &input, 1);
+                if (ret < 0)
+                        return ret;
+
+                *(int *)arg = input - 1;
+                break;
+        }
+
+        case VIDIOC_S_INPUT:
+        {
+                u8 input = *(u32 *)arg + 1;
+
+                if ((ret = uvc_acquire_privileges(handle)) < 0)
+                        return ret;
+
+                if (video->selector == NULL ||
+                    (video->dev->quirks & UVC_QUIRK_IGNORE_SELECTOR_UNIT)) {
+                        if (input != 1)
+                                return -EINVAL;
+                        break;
+                }
+
+                if (input > video->selector->selector.bNrInPins)
+                        return -EINVAL;
+
+                return uvc_query_ctrl(video->dev, SET_CUR, video->selector->id,
+                        video->dev->intfnum, SU_INPUT_SELECT_CONTROL,
+                        &input, 1);
+        }
+
+        /* Try, Get, Set & Enum format */
+        case VIDIOC_ENUM_FMT:
+        {
+                struct v4l2_fmtdesc *fmt = arg;
+                struct uvc_format *format;
+
+                if (fmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
+                    fmt->index >= video->streaming->nformats)
+                        return -EINVAL;
+
+                format = &video->streaming->format[fmt->index];
+                fmt->flags = 0;
+                if (format->flags & UVC_FMT_FLAG_COMPRESSED)
+                        fmt->flags |= V4L2_FMT_FLAG_COMPRESSED;
+                strncpy(fmt->description, format->name,
+                        sizeof fmt->description);
+                fmt->description[sizeof fmt->description - 1] = 0;
+                fmt->pixelformat = format->fcc;
+                break;
+        }
+
+        case VIDIOC_TRY_FMT:
+        {
+                struct uvc_streaming_control probe;
+
+                if ((ret = uvc_acquire_privileges(handle)) < 0)
+                        return ret;
+
+                return uvc_v4l2_try_format(video, arg, &probe, NULL, NULL);
+        }
+
+        case VIDIOC_S_FMT:
+                if ((ret = uvc_acquire_privileges(handle)) < 0)
+                        return ret;
+
+                return uvc_v4l2_set_format(video, arg);
+
+        case VIDIOC_G_FMT:
+                return uvc_v4l2_get_format(video, arg);
+
+        /* Frame size enumeration */
+        case VIDIOC_ENUM_FRAMESIZES:
+        {
+                struct v4l2_frmsizeenum *fsize = arg;
+                struct uvc_format *format = NULL;
+                struct uvc_frame *frame;
+                int i;
+
+                /* Look for the given pixel format */
+                for (i = 0; i < video->streaming->nformats; i++) {
+                        if (video->streaming->format[i].fcc ==
+                                        fsize->pixel_format) {
+                                format = &video->streaming->format[i];
+                                break;
+                        }
+                }
+                if (format == NULL)
+                        return -EINVAL;
+
+                if (fsize->index >= format->nframes)
+                        return -EINVAL;
+
+                frame = &format->frame[fsize->index];
+                fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
+                fsize->discrete.width = frame->wWidth;
+                fsize->discrete.height = frame->wHeight;
+                break;
+        }
+
+        /* Frame interval enumeration */
+        case VIDIOC_ENUM_FRAMEINTERVALS:
+        {
+                struct v4l2_frmivalenum *fival = arg;
+                struct uvc_format *format = NULL;
+                struct uvc_frame *frame = NULL;
+                int i;
+
+                /* Look for the given pixel format and frame size */
+                for (i = 0; i < video->streaming->nformats; i++) {
+                        if (video->streaming->format[i].fcc ==
+                                        fival->pixel_format) {
+                                format = &video->streaming->format[i];
+                                break;
+                        }
+                }
+                if (format == NULL)
+                        return -EINVAL;
+
+                for (i = 0; i < format->nframes; i++) {
+                        if (format->frame[i].wWidth == fival->width &&
+                            format->frame[i].wHeight == fival->height) {
+                                frame = &format->frame[i];
+                                break;
+                        }
+                }
+                if (frame == NULL)
+                        return -EINVAL;
+
+                if (frame->bFrameIntervalType) {
+                        if (fival->index >= frame->bFrameIntervalType)
+                                return -EINVAL;
+
+                        fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
+                        fival->discrete.numerator =
+                                frame->dwFrameInterval[fival->index];
+                        fival->discrete.denominator = 10000000;
+                        uvc_simplify_fraction(&fival->discrete.numerator,
+                                &fival->discrete.denominator, 8, 333);
+                } else {
+                        fival->type = V4L2_FRMIVAL_TYPE_STEPWISE;
+                        fival->stepwise.min.numerator =
+                                frame->dwFrameInterval[0];
+                        fival->stepwise.min.denominator = 10000000;
+                        fival->stepwise.max.numerator =
+                                frame->dwFrameInterval[1];
+                        fival->stepwise.max.denominator = 10000000;
+                        fival->stepwise.step.numerator =
+                                frame->dwFrameInterval[2];
+                        fival->stepwise.step.denominator = 10000000;
+                        uvc_simplify_fraction(&fival->stepwise.min.numerator,
+                                &fival->stepwise.min.denominator, 8, 333);
+                        uvc_simplify_fraction(&fival->stepwise.max.numerator,
+                                &fival->stepwise.max.denominator, 8, 333);
+                        uvc_simplify_fraction(&fival->stepwise.step.numerator,
+                                &fival->stepwise.step.denominator, 8, 333);
+                }
+                break;
+        }
+
+        /* Get & Set streaming parameters */
+        case VIDIOC_G_PARM:
+                return uvc_v4l2_get_streamparm(video, arg);
+
+        case VIDIOC_S_PARM:
+                if ((ret = uvc_acquire_privileges(handle)) < 0)
+                        return ret;
+
+                return uvc_v4l2_set_streamparm(video, arg);
+
+        /* Cropping and scaling */
+        case VIDIOC_CROPCAP:
+        {
+                struct v4l2_cropcap *ccap = arg;
+                struct uvc_frame *frame = video->streaming->cur_frame;
+
+                if (ccap->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+                        return -EINVAL;
+
+                ccap->bounds.left = 0;
+                ccap->bounds.top = 0;
+                ccap->bounds.width = frame->wWidth;
+                ccap->bounds.height = frame->wHeight;
+
+                ccap->defrect = ccap->bounds;
+
+                ccap->pixelaspect.numerator = 1;
+                ccap->pixelaspect.denominator = 1;
+                break;
+        }
+
+        case VIDIOC_G_CROP:
+        case VIDIOC_S_CROP:
+                return -EINVAL;
+
+        /* Buffers & streaming */
+        case VIDIOC_REQBUFS:
+        {
+                struct v4l2_requestbuffers *rb = arg;
+                unsigned int bufsize =
+                        video->streaming->ctrl.dwMaxVideoFrameSize;
+
+                if (rb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
+                    rb->memory != V4L2_MEMORY_MMAP)
+                        return -EINVAL;
+
+                if ((ret = uvc_acquire_privileges(handle)) < 0)
+                        return ret;
+
+                ret = uvc_alloc_buffers(&video->queue, rb->count, bufsize);
+                if (ret < 0)
+                        return ret;
+
+                if (!(video->streaming->cur_format->flags &
+                    UVC_FMT_FLAG_COMPRESSED))
+                        video->queue.flags |= UVC_QUEUE_DROP_INCOMPLETE;
+
+                rb->count = ret;
+                ret = 0;
+                break;
+        }
+
+        case VIDIOC_QUERYBUF:
+        {
+                struct v4l2_buffer *buf = arg;
+
+                if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+                        return -EINVAL;
+
+                if (!uvc_has_privileges(handle))
+                        return -EBUSY;
+
+                return uvc_query_buffer(&video->queue, buf);
+        }
+
+        case VIDIOC_QBUF:
+                if (!uvc_has_privileges(handle))
+                        return -EBUSY;
+
+                return uvc_queue_buffer(&video->queue, arg);
+
+        case VIDIOC_DQBUF:
+                if (!uvc_has_privileges(handle))
+                        return -EBUSY;
+
+                return uvc_dequeue_buffer(&video->queue, arg,
+                        file->f_flags & O_NONBLOCK);
+
+        case VIDIOC_STREAMON:
+        {
+                int *type = arg;
+
+                if (*type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+                        return -EINVAL;
+
+                if (!uvc_has_privileges(handle))
+                        return -EBUSY;
+
+                if ((ret = uvc_video_enable(video, 1)) < 0)
+                        return ret;
+                break;
+        }
+
+        case VIDIOC_STREAMOFF:
+        {
+                int *type = arg;
+
+                if (*type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+                        return -EINVAL;
+
+                if (!uvc_has_privileges(handle))
+                        return -EBUSY;
+
+                return uvc_video_enable(video, 0);
+        }
+
+        /* Analog video standards make no sense for digital cameras. */
+        case VIDIOC_ENUMSTD:
+        case VIDIOC_QUERYSTD:
+        case VIDIOC_G_STD:
+        case VIDIOC_S_STD:
+
+        case VIDIOC_OVERLAY:
+
+        case VIDIOC_ENUMAUDIO:
+        case VIDIOC_ENUMAUDOUT:
+
+        case VIDIOC_ENUMOUTPUT:
+                uvc_trace(UVC_TRACE_IOCTL, "Unsupported ioctl 0x%08x\n", cmd);
+                return -EINVAL;
+
+        /* Dynamic controls. */
+        case UVCIOC_CTRL_ADD:
+        {
+                struct uvc_xu_control_info *xinfo = arg;
+                struct uvc_control_info *info;
+
+                if (!capable(CAP_SYS_ADMIN))
+                        return -EPERM;
+
+                info = kmalloc(sizeof *info, GFP_KERNEL);
+                if (info == NULL)
+                        return -ENOMEM;
+
+                memcpy(info->entity, xinfo->entity, sizeof info->entity);
+                info->index = xinfo->index;
+                info->selector = xinfo->selector;
+                info->size = xinfo->size;
+                info->flags = xinfo->flags;
+
+                info->flags |= UVC_CONTROL_GET_MIN | UVC_CONTROL_GET_MAX |
+                                UVC_CONTROL_GET_RES | UVC_CONTROL_GET_DEF;
+
+                ret = uvc_ctrl_add_info(info);
+                if (ret < 0)
+                        kfree(info);
+                break;
+        }
+
+        case UVCIOC_CTRL_MAP:
+        {
+                struct uvc_xu_control_mapping *xmap = arg;
+                struct uvc_control_mapping *map;
+
+                if (!capable(CAP_SYS_ADMIN))
+                        return -EPERM;
+
+                map = kmalloc(sizeof *map, GFP_KERNEL);
+                if (map == NULL)
+                        return -ENOMEM;
+
+                map->id = xmap->id;
+                memcpy(map->name, xmap->name, sizeof map->name);
+                memcpy(map->entity, xmap->entity, sizeof map->entity);
+                map->selector = xmap->selector;
+                map->size = xmap->size;
+                map->offset = xmap->offset;
+                map->v4l2_type = xmap->v4l2_type;
+                map->data_type = xmap->data_type;
+
+                ret = uvc_ctrl_add_mapping(map);
+                if (ret < 0)
+                        kfree(map);
+                break;
+        }
+
+        case UVCIOC_CTRL_GET:
+                return uvc_xu_ctrl_query(video, arg, 0);
+
+        case UVCIOC_CTRL_SET:
+                return uvc_xu_ctrl_query(video, arg, 1);
+
+        default:
+                if ((ret = v4l_compat_translate_ioctl(inode, file, cmd, arg,
+                        uvc_v4l2_do_ioctl)) == -ENOIOCTLCMD)
+                        uvc_trace(UVC_TRACE_IOCTL, "Unknown ioctl 0x%08x\n",
+                                  cmd);
+                return ret;
+        }
+
+        return ret;
+}
+
+static int uvc_v4l2_ioctl(struct inode *inode, struct file *file,
+                     unsigned int cmd, unsigned long arg)
+{
+        uvc_trace(UVC_TRACE_CALLS, "uvc_v4l2_ioctl\n");
+        return video_usercopy(inode, file, cmd, arg, uvc_v4l2_do_ioctl);
+}
+
+static ssize_t uvc_v4l2_read(struct file *file, char __user *data,
+                    size_t count, loff_t *ppos)
+{
+        uvc_trace(UVC_TRACE_CALLS, "uvc_v4l2_read: not implemented.\n");
+        return -ENODEV;
+}
+
+/*
+ * VMA operations.
+ */
+static void uvc_vm_open(struct vm_area_struct *vma)
+{
+        struct uvc_buffer *buffer = vma->vm_private_data;
+        buffer->vma_use_count++;
+}
+
+static void uvc_vm_close(struct vm_area_struct *vma)
+{
+        struct uvc_buffer *buffer = vma->vm_private_data;
+        buffer->vma_use_count--;
+}
+
+static struct vm_operations_struct uvc_vm_ops = {
+        .open           = uvc_vm_open,
+        .close          = uvc_vm_close,
+};
+
+static int uvc_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
+{
+        struct video_device *vdev = video_devdata(file);
+        struct uvc_video_device *video = video_get_drvdata(vdev);
+        struct uvc_buffer *buffer;
+        struct page *page;
+        unsigned long addr, start, size;
+        unsigned int i;
+        int ret = 0;
+
+        uvc_trace(UVC_TRACE_CALLS, "uvc_v4l2_mmap\n");
+
+        start = vma->vm_start;
+        size = vma->vm_end - vma->vm_start;
+
+        mutex_lock(&video->queue.mutex);
+
+        for (i = 0; i < video->queue.count; ++i) {
+                buffer = &video->queue.buffer[i];
+                if ((buffer->buf.m.offset >> PAGE_SHIFT) == vma->vm_pgoff)
+                        break;
+        }
+
+        if (i == video->queue.count || size != video->queue.buf_size) {
+                ret = -EINVAL;
+                goto done;
+        }
+
+        /*
+         * VM_IO marks the area as being an mmaped region for I/O to a
+         * device. It also prevents the region from being core dumped.
+         */
+        vma->vm_flags |= VM_IO;
+
+        addr = (unsigned long)video->queue.mem + buffer->buf.m.offset;
+        while (size > 0) {
+                page = vmalloc_to_page((void *)addr);
+                if ((ret = vm_insert_page(vma, start, page)) < 0)
+                        goto done;
+
+                start += PAGE_SIZE;
+                addr += PAGE_SIZE;
+                size -= PAGE_SIZE;
+        }
+
+        vma->vm_ops = &uvc_vm_ops;
+        vma->vm_private_data = buffer;
+        uvc_vm_open(vma);
+
+done:
+        mutex_unlock(&video->queue.mutex);
+        return ret;
+}
+
+static unsigned int uvc_v4l2_poll(struct file *file, poll_table *wait)
+{
+        struct video_device *vdev = video_devdata(file);
+        struct uvc_video_device *video = video_get_drvdata(vdev);
+
+        uvc_trace(UVC_TRACE_CALLS, "uvc_v4l2_poll\n");
+
+        return uvc_queue_poll(&video->queue, file, wait);
+}
+
+struct file_operations uvc_fops = {
+        .owner          = THIS_MODULE,
+        .open           = uvc_v4l2_open,
+        .release        = uvc_v4l2_release,
+        .ioctl          = uvc_v4l2_ioctl,
+        .compat_ioctl   = v4l_compat_ioctl32,
+        .llseek         = no_llseek,
+        .read           = uvc_v4l2_read,
+        .mmap           = uvc_v4l2_mmap,
+        .poll           = uvc_v4l2_poll,
+};
diff --git a/drivers/media/video/uvc/uvc_video.c b/drivers/media/video/uvc/uvc_video.c
new file mode 100644
index 000000000000..6faf1fb21614
--- /dev/null
+++ b/drivers/media/video/uvc/uvc_video.c
@@ -0,0 +1,934 @@
+/*
+ *      uvc_video.c  --  USB Video Class driver - Video handling
+ *
+ *      Copyright (C) 2005-2008
+ *          Laurent Pinchart (laurent.pinchart@skynet.be)
+ *
+ *      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/kernel.h>
+#include <linux/version.h>
+#include <linux/list.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+#include <linux/videodev2.h>
+#include <linux/vmalloc.h>
+#include <linux/wait.h>
+#include <asm/atomic.h>
+#include <asm/unaligned.h>
+
+#include <media/v4l2-common.h>
+
+#include "uvcvideo.h"
+
+/* ------------------------------------------------------------------------
+ * UVC Controls
+ */
+
+static int __uvc_query_ctrl(struct uvc_device *dev, __u8 query, __u8 unit,
+                        __u8 intfnum, __u8 cs, void *data, __u16 size,
+                        int timeout)
+{
+        __u8 type = USB_TYPE_CLASS | USB_RECIP_INTERFACE;
+        unsigned int pipe;
+        int ret;
+
+        pipe = (query & 0x80) ? usb_rcvctrlpipe(dev->udev, 0)
+                              : usb_sndctrlpipe(dev->udev, 0);
+        type |= (query & 0x80) ? USB_DIR_IN : USB_DIR_OUT;
+
+        ret = usb_control_msg(dev->udev, pipe, query, type, cs << 8,
+                        unit << 8 | intfnum, data, size, timeout);
+
+        if (ret != size) {
+                uvc_printk(KERN_ERR, "Failed to query (%u) UVC control %u "
+                        "(unit %u) : %d (exp. %u).\n", query, cs, unit, ret,
+                        size);
+                return -EIO;
+        }
+
+        return 0;
+}
+
+int uvc_query_ctrl(struct uvc_device *dev, __u8 query, __u8 unit,
+                        __u8 intfnum, __u8 cs, void *data, __u16 size)
+{
+        return __uvc_query_ctrl(dev, query, unit, intfnum, cs, data, size,
+                                UVC_CTRL_CONTROL_TIMEOUT);
+}
+
+static void uvc_fixup_buffer_size(struct uvc_video_device *video,
+        struct uvc_streaming_control *ctrl)
+{
+        struct uvc_format *format;
+        struct uvc_frame *frame;
+
+        if (ctrl->bFormatIndex <= 0 ||
+            ctrl->bFormatIndex > video->streaming->nformats)
+                return;
+
+        format = &video->streaming->format[ctrl->bFormatIndex - 1];
+
+        if (ctrl->bFrameIndex <= 0 ||
+            ctrl->bFrameIndex > format->nframes)
+                return;
+
+        frame = &format->frame[ctrl->bFrameIndex - 1];
+
+        if (!(format->flags & UVC_FMT_FLAG_COMPRESSED) ||
+             (ctrl->dwMaxVideoFrameSize == 0 &&
+              video->dev->uvc_version < 0x0110))
+                ctrl->dwMaxVideoFrameSize =
+                        frame->dwMaxVideoFrameBufferSize;
+}
+
+static int uvc_get_video_ctrl(struct uvc_video_device *video,
+        struct uvc_streaming_control *ctrl, int probe, __u8 query)
+{
+        __u8 data[34];
+        __u8 size;
+        int ret;
+
+        size = video->dev->uvc_version >= 0x0110 ? 34 : 26;
+        ret = __uvc_query_ctrl(video->dev, query, 0, video->streaming->intfnum,
+                probe ? VS_PROBE_CONTROL : VS_COMMIT_CONTROL, &data, size,
+                UVC_CTRL_STREAMING_TIMEOUT);
+
+        if (ret < 0)
+                return ret;
+
+        ctrl->bmHint = le16_to_cpup((__le16 *)&data[0]);
+        ctrl->bFormatIndex = data[2];
+        ctrl->bFrameIndex = data[3];
+        ctrl->dwFrameInterval = le32_to_cpup((__le32 *)&data[4]);
+        ctrl->wKeyFrameRate = le16_to_cpup((__le16 *)&data[8]);
+        ctrl->wPFrameRate = le16_to_cpup((__le16 *)&data[10]);
+        ctrl->wCompQuality = le16_to_cpup((__le16 *)&data[12]);
+        ctrl->wCompWindowSize = le16_to_cpup((__le16 *)&data[14]);
+        ctrl->wDelay = le16_to_cpup((__le16 *)&data[16]);
+        ctrl->dwMaxVideoFrameSize =
+                le32_to_cpu(get_unaligned((__le32 *)&data[18]));
+        ctrl->dwMaxPayloadTransferSize =
+                le32_to_cpu(get_unaligned((__le32 *)&data[22]));
+
+        if (size == 34) {
+                ctrl->dwClockFrequency =
+                        le32_to_cpu(get_unaligned((__le32 *)&data[26]));
+                ctrl->bmFramingInfo = data[30];
+                ctrl->bPreferedVersion = data[31];
+                ctrl->bMinVersion = data[32];
+                ctrl->bMaxVersion = data[33];
+        } else {
+                ctrl->dwClockFrequency = video->dev->clock_frequency;
+                ctrl->bmFramingInfo = 0;
+                ctrl->bPreferedVersion = 0;
+                ctrl->bMinVersion = 0;
+                ctrl->bMaxVersion = 0;
+        }
+
+        /* Some broken devices return a null or wrong dwMaxVideoFrameSize.
+         * Try to get the value from the format and frame descriptor.
+         */
+        uvc_fixup_buffer_size(video, ctrl);
+
+        return 0;
+}
+
+int uvc_set_video_ctrl(struct uvc_video_device *video,
+        struct uvc_streaming_control *ctrl, int probe)
+{
+        __u8 data[34];
+        __u8 size;
+
+        size = video->dev->uvc_version >= 0x0110 ? 34 : 26;
+        memset(data, 0, sizeof data);
+
+        *(__le16 *)&data[0] = cpu_to_le16(ctrl->bmHint);
+        data[2] = ctrl->bFormatIndex;
+        data[3] = ctrl->bFrameIndex;
+        *(__le32 *)&data[4] = cpu_to_le32(ctrl->dwFrameInterval);
+        *(__le16 *)&data[8] = cpu_to_le16(ctrl->wKeyFrameRate);
+        *(__le16 *)&data[10] = cpu_to_le16(ctrl->wPFrameRate);
+        *(__le16 *)&data[12] = cpu_to_le16(ctrl->wCompQuality);
+        *(__le16 *)&data[14] = cpu_to_le16(ctrl->wCompWindowSize);
+        *(__le16 *)&data[16] = cpu_to_le16(ctrl->wDelay);
+        /* Note: Some of the fields below are not required for IN devices (see
+         * UVC spec, 4.3.1.1), but we still copy them in case support for OUT
+         * devices is added in the future. */
+        put_unaligned(cpu_to_le32(ctrl->dwMaxVideoFrameSize),
+                (__le32 *)&data[18]);
+        put_unaligned(cpu_to_le32(ctrl->dwMaxPayloadTransferSize),
+                (__le32 *)&data[22]);
+
+        if (size == 34) {
+                put_unaligned(cpu_to_le32(ctrl->dwClockFrequency),
+                        (__le32 *)&data[26]);
+                data[30] = ctrl->bmFramingInfo;
+                data[31] = ctrl->bPreferedVersion;
+                data[32] = ctrl->bMinVersion;
+                data[33] = ctrl->bMaxVersion;
+        }
+
+        return __uvc_query_ctrl(video->dev, SET_CUR, 0,
+                video->streaming->intfnum,
+                probe ? VS_PROBE_CONTROL : VS_COMMIT_CONTROL, &data, size,
+                UVC_CTRL_STREAMING_TIMEOUT);
+}
+
+int uvc_probe_video(struct uvc_video_device *video,
+        struct uvc_streaming_control *probe)
+{
+        struct uvc_streaming_control probe_min, probe_max;
+        __u16 bandwidth;
+        unsigned int i;
+        int ret;
+
+        mutex_lock(&video->streaming->mutex);
+
+        /* Perform probing. The device should adjust the requested values
+         * according to its capabilities. However, some devices, namely the
+         * first generation UVC Logitech webcams, don't implement the Video
+         * Probe control properly, and just return the needed bandwidth. For
+         * that reason, if the needed bandwidth exceeds the maximum available
+         * bandwidth, try to lower the quality.
+         */
+        if ((ret = uvc_set_video_ctrl(video, probe, 1)) < 0)
+                goto done;
+
+        /* Get the minimum and maximum values for compression settings. */
+        if (!(video->dev->quirks & UVC_QUIRK_PROBE_MINMAX)) {
+                ret = uvc_get_video_ctrl(video, &probe_min, 1, GET_MIN);
+                if (ret < 0)
+                        goto done;
+                ret = uvc_get_video_ctrl(video, &probe_max, 1, GET_MAX);
+                if (ret < 0)
+                        goto done;
+
+                probe->wCompQuality = probe_max.wCompQuality;
+        }
+
+        for (i = 0; i < 2; ++i) {
+                if ((ret = uvc_set_video_ctrl(video, probe, 1)) < 0 ||
+                    (ret = uvc_get_video_ctrl(video, probe, 1, GET_CUR)) < 0)
+                        goto done;
+
+                if (video->streaming->intf->num_altsetting == 1)
+                        break;
+
+                bandwidth = probe->dwMaxPayloadTransferSize;
+                if (bandwidth <= video->streaming->maxpsize)
+                        break;
+
+                if (video->dev->quirks & UVC_QUIRK_PROBE_MINMAX) {
+                        ret = -ENOSPC;
+                        goto done;
+                }
+
+                /* TODO: negotiate compression parameters */
+                probe->wKeyFrameRate = probe_min.wKeyFrameRate;
+                probe->wPFrameRate = probe_min.wPFrameRate;
+                probe->wCompQuality = probe_max.wCompQuality;
+                probe->wCompWindowSize = probe_min.wCompWindowSize;
+        }
+
+done:
+        mutex_unlock(&video->streaming->mutex);
+        return ret;
+}
+
+/* ------------------------------------------------------------------------
+ * Video codecs
+ */
+
+/* Values for bmHeaderInfo (Video and Still Image Payload Headers, 2.4.3.3) */
+#define UVC_STREAM_EOH  (1 << 7)
+#define UVC_STREAM_ERR  (1 << 6)
+#define UVC_STREAM_STI  (1 << 5)
+#define UVC_STREAM_RES  (1 << 4)
+#define UVC_STREAM_SCR  (1 << 3)
+#define UVC_STREAM_PTS  (1 << 2)
+#define UVC_STREAM_EOF  (1 << 1)
+#define UVC_STREAM_FID  (1 << 0)
+
+/* Video payload decoding is handled by uvc_video_decode_start(),
+ * uvc_video_decode_data() and uvc_video_decode_end().
+ *
+ * uvc_video_decode_start is called with URB data at the start of a bulk or
+ * isochronous payload. It processes header data and returns the header size
+ * in bytes if successful. If an error occurs, it returns a negative error
+ * code. The following error codes have special meanings.
+ *
+ * - EAGAIN informs the caller that the current video buffer should be marked
+ *   as done, and that the function should be called again with the same data
+ *   and a new video buffer. This is used when end of frame conditions can be
+ *   reliably detected at the beginning of the next frame only.
+ *
+ * If an error other than -EAGAIN is returned, the caller will drop the current
+ * payload. No call to uvc_video_decode_data and uvc_video_decode_end will be
+ * made until the next payload. -ENODATA can be used to drop the current
+ * payload if no other error code is appropriate.
+ *
+ * uvc_video_decode_data is called for every URB with URB data. It copies the
+ * data to the video buffer.
+ *
+ * uvc_video_decode_end is called with header data at the end of a bulk or
+ * isochronous payload. It performs any additional header data processing and
+ * returns 0 or a negative error code if an error occured. As header data have
+ * already been processed by uvc_video_decode_start, this functions isn't
+ * required to perform sanity checks a second time.
+ *
+ * For isochronous transfers where a payload is always transfered in a single
+ * URB, the three functions will be called in a row.
+ *
+ * To let the decoder process header data and update its internal state even
+ * when no video buffer is available, uvc_video_decode_start must be prepared
+ * to be called with a NULL buf parameter. uvc_video_decode_data and
+ * uvc_video_decode_end will never be called with a NULL buffer.
+ */
+static int uvc_video_decode_start(struct uvc_video_device *video,
+                struct uvc_buffer *buf, const __u8 *data, int len)
+{
+        __u8 fid;
+
+        /* Sanity checks:
+         * - packet must be at least 2 bytes long
+         * - bHeaderLength value must be at least 2 bytes (see above)
+         * - bHeaderLength value can't be larger than the packet size.
+         */
+        if (len < 2 || data[0] < 2 || data[0] > len)
+                return -EINVAL;
+
+        /* Skip payloads marked with the error bit ("error frames"). */
+        if (data[1] & UVC_STREAM_ERR) {
+                uvc_trace(UVC_TRACE_FRAME, "Dropping payload (error bit "
+                          "set).\n");
+                return -ENODATA;
+        }
+
+        fid = data[1] & UVC_STREAM_FID;
+
+        /* Store the payload FID bit and return immediately when the buffer is
+         * NULL.
+         */
+        if (buf == NULL) {
+                video->last_fid = fid;
+                return -ENODATA;
+        }
+
+        /* Synchronize to the input stream by waiting for the FID bit to be
+         * toggled when the the buffer state is not UVC_BUF_STATE_ACTIVE.
+         * queue->last_fid is initialized to -1, so the first isochronous
+         * frame will always be in sync.
+         *
+         * If the device doesn't toggle the FID bit, invert video->last_fid
+         * when the EOF bit is set to force synchronisation on the next packet.
+         */
+        if (buf->state != UVC_BUF_STATE_ACTIVE) {
+                if (fid == video->last_fid) {
+                        uvc_trace(UVC_TRACE_FRAME, "Dropping payload (out of "
+                                "sync).\n");
+                        if ((video->dev->quirks & UVC_QUIRK_STREAM_NO_FID) &&
+                            (data[1] & UVC_STREAM_EOF))
+                                video->last_fid ^= UVC_STREAM_FID;
+                        return -ENODATA;
+                }
+
+                /* TODO: Handle PTS and SCR. */
+                buf->state = UVC_BUF_STATE_ACTIVE;
+        }
+
+        /* Mark the buffer as done if we're at the beginning of a new frame.
+         * End of frame detection is better implemented by checking the EOF
+         * bit (FID bit toggling is delayed by one frame compared to the EOF
+         * bit), but some devices don't set the bit at end of frame (and the
+         * last payload can be lost anyway). We thus must check if the FID has
+         * been toggled.
+         *
+         * queue->last_fid is initialized to -1, so the first isochronous
+         * frame will never trigger an end of frame detection.
+         *
+         * Empty buffers (bytesused == 0) don't trigger end of frame detection
+         * as it doesn't make sense to return an empty buffer. This also
+         * avoids detecting and of frame conditions at FID toggling if the
+         * previous payload had the EOF bit set.
+         */
+        if (fid != video->last_fid && buf->buf.bytesused != 0) {
+                uvc_trace(UVC_TRACE_FRAME, "Frame complete (FID bit "
+                                "toggled).\n");
+                buf->state = UVC_BUF_STATE_DONE;
+                return -EAGAIN;
+        }
+
+        video->last_fid = fid;
+
+        return data[0];
+}
+
+static void uvc_video_decode_data(struct uvc_video_device *video,
+                struct uvc_buffer *buf, const __u8 *data, int len)
+{
+        struct uvc_video_queue *queue = &video->queue;
+        unsigned int maxlen, nbytes;
+        void *mem;
+
+        if (len <= 0)
+                return;
+
+        /* Copy the video data to the buffer. */
+        maxlen = buf->buf.length - buf->buf.bytesused;
+        mem = queue->mem + buf->buf.m.offset + buf->buf.bytesused;
+        nbytes = min((unsigned int)len, maxlen);
+        memcpy(mem, data, nbytes);
+        buf->buf.bytesused += nbytes;
+
+        /* Complete the current frame if the buffer size was exceeded. */
+        if (len > maxlen) {
+                uvc_trace(UVC_TRACE_FRAME, "Frame complete (overflow).\n");
+                buf->state = UVC_BUF_STATE_DONE;
+        }
+}
+
+static void uvc_video_decode_end(struct uvc_video_device *video,
+                struct uvc_buffer *buf, const __u8 *data, int len)
+{
+        /* Mark the buffer as done if the EOF marker is set. */
+        if (data[1] & UVC_STREAM_EOF && buf->buf.bytesused != 0) {
+                uvc_trace(UVC_TRACE_FRAME, "Frame complete (EOF found).\n");
+                if (data[0] == len)
+                        uvc_trace(UVC_TRACE_FRAME, "EOF in empty payload.\n");
+                buf->state = UVC_BUF_STATE_DONE;
+                if (video->dev->quirks & UVC_QUIRK_STREAM_NO_FID)
+                        video->last_fid ^= UVC_STREAM_FID;
+        }
+}
+
+/* ------------------------------------------------------------------------
+ * URB handling
+ */
+
+/*
+ * Completion handler for video URBs.
+ */
+static void uvc_video_decode_isoc(struct urb *urb,
+        struct uvc_video_device *video, struct uvc_buffer *buf)
+{
+        u8 *mem;
+        int ret, i;
+
+        for (i = 0; i < urb->number_of_packets; ++i) {
+                if (urb->iso_frame_desc[i].status < 0) {
+                        uvc_trace(UVC_TRACE_FRAME, "USB isochronous frame "
+                                "lost (%d).\n", urb->iso_frame_desc[i].status);
+                        continue;
+                }
+
+                /* Decode the payload header. */
+                mem = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
+                do {
+                        ret = uvc_video_decode_start(video, buf, mem,
+                                urb->iso_frame_desc[i].actual_length);
+                        if (ret == -EAGAIN)
+                                buf = uvc_queue_next_buffer(&video->queue, buf);
+                } while (ret == -EAGAIN);
+
+                if (ret < 0)
+                        continue;
+
+                /* Decode the payload data. */
+                uvc_video_decode_data(video, buf, mem + ret,
+                        urb->iso_frame_desc[i].actual_length - ret);
+
+                /* Process the header again. */
+                uvc_video_decode_end(video, buf, mem, ret);
+
+                if (buf->state == UVC_BUF_STATE_DONE ||
+                    buf->state == UVC_BUF_STATE_ERROR)
+                        buf = uvc_queue_next_buffer(&video->queue, buf);
+        }
+}
+
+static void uvc_video_decode_bulk(struct urb *urb,
+        struct uvc_video_device *video, struct uvc_buffer *buf)
+{
+        u8 *mem;
+        int len, ret;
+
+        mem = urb->transfer_buffer;
+        len = urb->actual_length;
+        video->bulk.payload_size += len;
+
+        /* If the URB is the first of its payload, decode and save the
+         * header.
+         */
+        if (video->bulk.header_size == 0) {
+                do {
+                        ret = uvc_video_decode_start(video, buf, mem, len);
+                        if (ret == -EAGAIN)
+                                buf = uvc_queue_next_buffer(&video->queue, buf);
+                } while (ret == -EAGAIN);
+
+                /* If an error occured skip the rest of the payload. */
+                if (ret < 0 || buf == NULL) {
+                        video->bulk.skip_payload = 1;
+                        return;
+                }
+
+                video->bulk.header_size = ret;
+                memcpy(video->bulk.header, mem, video->bulk.header_size);
+
+                mem += ret;
+                len -= ret;
+        }
+
+        /* The buffer queue might have been cancelled while a bulk transfer
+         * was in progress, so we can reach here with buf equal to NULL. Make
+         * sure buf is never dereferenced if NULL.
+         */
+
+        /* Process video data. */
+        if (!video->bulk.skip_payload && buf != NULL)
+                uvc_video_decode_data(video, buf, mem, len);
+
+        /* Detect the payload end by a URB smaller than the maximum size (or
+         * a payload size equal to the maximum) and process the header again.
+         */
+        if (urb->actual_length < urb->transfer_buffer_length ||
+            video->bulk.payload_size >= video->bulk.max_payload_size) {
+                if (!video->bulk.skip_payload && buf != NULL) {
+                        uvc_video_decode_end(video, buf, video->bulk.header,
+                                video->bulk.header_size);
+                        if (buf->state == UVC_BUF_STATE_DONE ||
+                            buf->state == UVC_BUF_STATE_ERROR)
+                                buf = uvc_queue_next_buffer(&video->queue, buf);
+                }
+
+                video->bulk.header_size = 0;
+                video->bulk.skip_payload = 0;
+                video->bulk.payload_size = 0;
+        }
+}
+
+static void uvc_video_complete(struct urb *urb)
+{
+        struct uvc_video_device *video = urb->context;
+        struct uvc_video_queue *queue = &video->queue;
+        struct uvc_buffer *buf = NULL;
+        unsigned long flags;
+        int ret;
+
+        switch (urb->status) {
+        case 0:
+                break;
+
+        default:
+                uvc_printk(KERN_WARNING, "Non-zero status (%d) in video "
+                        "completion handler.\n", urb->status);
+
+        case -ENOENT:           /* usb_kill_urb() called. */
+                if (video->frozen)
+                        return;
+
+        case -ECONNRESET:       /* usb_unlink_urb() called. */
+        case -ESHUTDOWN:        /* The endpoint is being disabled. */
+                uvc_queue_cancel(queue, urb->status == -ESHUTDOWN);
+                return;
+        }
+
+        spin_lock_irqsave(&queue->irqlock, flags);
+        if (!list_empty(&queue->irqqueue))
+                buf = list_first_entry(&queue->irqqueue, struct uvc_buffer,
+                                       queue);
+        spin_unlock_irqrestore(&queue->irqlock, flags);
+
+        video->decode(urb, video, buf);
+
+        if ((ret = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
+                uvc_printk(KERN_ERR, "Failed to resubmit video URB (%d).\n",
+                        ret);
+        }
+}
+
+/*
+ * Uninitialize isochronous/bulk URBs and free transfer buffers.
+ */
+static void uvc_uninit_video(struct uvc_video_device *video)
+{
+        struct urb *urb;
+        unsigned int i;
+
+        for (i = 0; i < UVC_URBS; ++i) {
+                if ((urb = video->urb[i]) == NULL)
+                        continue;
+
+                usb_kill_urb(urb);
+                /* urb->transfer_buffer_length is not touched by USB core, so
+                 * we can use it here as the buffer length.
+                 */
+                if (video->urb_buffer[i]) {
+                        usb_buffer_free(video->dev->udev,
+                                urb->transfer_buffer_length,
+                                video->urb_buffer[i], urb->transfer_dma);
+                        video->urb_buffer[i] = NULL;
+                }
+
+                usb_free_urb(urb);
+                video->urb[i] = NULL;
+        }
+}
+
+/*
+ * Initialize isochronous URBs and allocate transfer buffers. The packet size
+ * is given by the endpoint.
+ */
+static int uvc_init_video_isoc(struct uvc_video_device *video,
+        struct usb_host_endpoint *ep)
+{
+        struct urb *urb;
+        unsigned int npackets, i, j;
+        __u16 psize;
+        __u32 size;
+
+        /* Compute the number of isochronous packets to allocate by dividing
+         * the maximum video frame size by the packet size. Limit the result
+         * to UVC_MAX_ISO_PACKETS.
+         */
+        psize = le16_to_cpu(ep->desc.wMaxPacketSize);
+        psize = (psize & 0x07ff) * (1 + ((psize >> 11) & 3));
+
+        size = video->streaming->ctrl.dwMaxVideoFrameSize;
+        if (size > UVC_MAX_FRAME_SIZE)
+                return -EINVAL;
+
+        npackets = (size + psize - 1) / psize;
+        if (npackets > UVC_MAX_ISO_PACKETS)
+                npackets = UVC_MAX_ISO_PACKETS;
+
+        size = npackets * psize;
+
+        for (i = 0; i < UVC_URBS; ++i) {
+                urb = usb_alloc_urb(npackets, GFP_KERNEL);
+                if (urb == NULL) {
+                        uvc_uninit_video(video);
+                        return -ENOMEM;
+                }
+
+                video->urb_buffer[i] = usb_buffer_alloc(video->dev->udev,
+                        size, GFP_KERNEL, &urb->transfer_dma);
+                if (video->urb_buffer[i] == NULL) {
+                        usb_free_urb(urb);
+                        uvc_uninit_video(video);
+                        return -ENOMEM;
+                }
+
+                urb->dev = video->dev->udev;
+                urb->context = video;
+                urb->pipe = usb_rcvisocpipe(video->dev->udev,
+                                ep->desc.bEndpointAddress);
+                urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
+                urb->interval = ep->desc.bInterval;
+                urb->transfer_buffer = video->urb_buffer[i];
+                urb->complete = uvc_video_complete;
+                urb->number_of_packets = npackets;
+                urb->transfer_buffer_length = size;
+
+                for (j = 0; j < npackets; ++j) {
+                        urb->iso_frame_desc[j].offset = j * psize;
+                        urb->iso_frame_desc[j].length = psize;
+                }
+
+                video->urb[i] = urb;
+        }
+
+        return 0;
+}
+
+/*
+ * Initialize bulk URBs and allocate transfer buffers. The packet size is
+ * given by the endpoint.
+ */
+static int uvc_init_video_bulk(struct uvc_video_device *video,
+        struct usb_host_endpoint *ep)
+{
+        struct urb *urb;
+        unsigned int pipe, i;
+        __u16 psize;
+        __u32 size;
+
+        /* Compute the bulk URB size. Some devices set the maximum payload
+         * size to a value too high for memory-constrained devices. We must
+         * then transfer the payload accross multiple URBs. To be consistant
+         * with isochronous mode, allocate maximum UVC_MAX_ISO_PACKETS per bulk
+         * URB.
+         */
+        psize = le16_to_cpu(ep->desc.wMaxPacketSize) & 0x07ff;
+        size = video->streaming->ctrl.dwMaxPayloadTransferSize;
+        video->bulk.max_payload_size = size;
+        if (size > psize * UVC_MAX_ISO_PACKETS)
+                size = psize * UVC_MAX_ISO_PACKETS;
+
+        pipe = usb_rcvbulkpipe(video->dev->udev, ep->desc.bEndpointAddress);
+
+        for (i = 0; i < UVC_URBS; ++i) {
+                urb = usb_alloc_urb(0, GFP_KERNEL);
+                if (urb == NULL) {
+                        uvc_uninit_video(video);
+                        return -ENOMEM;
+                }
+
+                video->urb_buffer[i] = usb_buffer_alloc(video->dev->udev,
+                        size, GFP_KERNEL, &urb->transfer_dma);
+                if (video->urb_buffer[i] == NULL) {
+                        usb_free_urb(urb);
+                        uvc_uninit_video(video);
+                        return -ENOMEM;
+                }
+
+                usb_fill_bulk_urb(urb, video->dev->udev, pipe,
+                        video->urb_buffer[i], size, uvc_video_complete,
+                        video);
+                urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
+
+                video->urb[i] = urb;
+        }
+
+        return 0;
+}
+
+/*
+ * Initialize isochronous/bulk URBs and allocate transfer buffers.
+ */
+static int uvc_init_video(struct uvc_video_device *video)
+{
+        struct usb_interface *intf = video->streaming->intf;
+        struct usb_host_interface *alts;
+        struct usb_host_endpoint *ep = NULL;
+        int intfnum = video->streaming->intfnum;
+        unsigned int bandwidth, psize, i;
+        int ret;
+
+        video->last_fid = -1;
+        video->bulk.header_size = 0;
+        video->bulk.skip_payload = 0;
+        video->bulk.payload_size = 0;
+
+        if (intf->num_altsetting > 1) {
+                /* Isochronous endpoint, select the alternate setting. */
+                bandwidth = video->streaming->ctrl.dwMaxPayloadTransferSize;
+
+                if (bandwidth == 0) {
+                        uvc_printk(KERN_WARNING, "device %s requested null "
+                                "bandwidth, defaulting to lowest.\n",
+                                video->vdev->name);
+                        bandwidth = 1;
+                }
+
+                for (i = 0; i < intf->num_altsetting; ++i) {
+                        alts = &intf->altsetting[i];
+                        ep = uvc_find_endpoint(alts,
+                                video->streaming->header.bEndpointAddress);
+                        if (ep == NULL)
+                                continue;
+
+                        /* Check if the bandwidth is high enough. */
+                        psize = le16_to_cpu(ep->desc.wMaxPacketSize);
+                        psize = (psize & 0x07ff) * (1 + ((psize >> 11) & 3));
+                        if (psize >= bandwidth)
+                                break;
+                }
+
+                if (i >= intf->num_altsetting)
+                        return -EIO;
+
+                if ((ret = usb_set_interface(video->dev->udev, intfnum, i)) < 0)
+                        return ret;
+
+                ret = uvc_init_video_isoc(video, ep);
+        } else {
+                /* Bulk endpoint, proceed to URB initialization. */
+                ep = uvc_find_endpoint(&intf->altsetting[0],
+                                video->streaming->header.bEndpointAddress);
+                if (ep == NULL)
+                        return -EIO;
+
+                ret = uvc_init_video_bulk(video, ep);
+        }
+
+        if (ret < 0)
+                return ret;
+
+        /* Submit the URBs. */
+        for (i = 0; i < UVC_URBS; ++i) {
+                if ((ret = usb_submit_urb(video->urb[i], GFP_KERNEL)) < 0) {
+                        uvc_printk(KERN_ERR, "Failed to submit URB %u "
+                                        "(%d).\n", i, ret);
+                        uvc_uninit_video(video);
+                        return ret;
+                }
+        }
+
+        return 0;
+}
+
+/* --------------------------------------------------------------------------
+ * Suspend/resume
+ */
+
+/*
+ * Stop streaming without disabling the video queue.
+ *
+ * To let userspace applications resume without trouble, we must not touch the
+ * video buffers in any way. We mark the device as frozen to make sure the URB
+ * completion handler won't try to cancel the queue when we kill the URBs.
+ */
+int uvc_video_suspend(struct uvc_video_device *video)
+{
+        if (!uvc_queue_streaming(&video->queue))
+                return 0;
+
+        video->frozen = 1;
+        uvc_uninit_video(video);
+        usb_set_interface(video->dev->udev, video->streaming->intfnum, 0);
+        return 0;
+}
+
+/*
+ * Reconfigure the video interface and restart streaming if it was enable
+ * before suspend.
+ *
+ * If an error occurs, disable the video queue. This will wake all pending
+ * buffers, making sure userspace applications are notified of the problem
+ * instead of waiting forever.
+ */
+int uvc_video_resume(struct uvc_video_device *video)
+{
+        int ret;
+
+        video->frozen = 0;
+
+        if ((ret = uvc_set_video_ctrl(video, &video->streaming->ctrl, 0)) < 0) {
+                uvc_queue_enable(&video->queue, 0);
+                return ret;
+        }
+
+        if (!uvc_queue_streaming(&video->queue))
+                return 0;
+
+        if ((ret = uvc_init_video(video)) < 0)
+                uvc_queue_enable(&video->queue, 0);
+
+        return ret;
+}
+
+/* ------------------------------------------------------------------------
+ * Video device
+ */
+
+/*
+ * Initialize the UVC video device by retrieving the default format and
+ * committing it.
+ *
+ * Some cameras (namely the Fuji Finepix) set the format and frame
+ * indexes to zero. The UVC standard doesn't clearly make this a spec
+ * violation, so try to silently fix the values if possible.
+ *
+ * This function is called before registering the device with V4L.
+ */
+int uvc_video_init(struct uvc_video_device *video)
+{
+        struct uvc_streaming_control *probe = &video->streaming->ctrl;
+        struct uvc_format *format = NULL;
+        struct uvc_frame *frame = NULL;
+        unsigned int i;
+        int ret;
+
+        if (video->streaming->nformats == 0) {
+                uvc_printk(KERN_INFO, "No supported video formats found.\n");
+                return -EINVAL;
+        }
+
+        /* Alternate setting 0 should be the default, yet the XBox Live Vision
+         * Cam (and possibly other devices) crash or otherwise misbehave if
+         * they don't receive a SET_INTERFACE request before any other video
+         * control request.
+         */
+        usb_set_interface(video->dev->udev, video->streaming->intfnum, 0);
+
+        /* Some webcams don't suport GET_DEF request on the probe control. We
+         * fall back to GET_CUR if GET_DEF fails.
+         */
+        if ((ret = uvc_get_video_ctrl(video, probe, 1, GET_DEF)) < 0 &&
+            (ret = uvc_get_video_ctrl(video, probe, 1, GET_CUR)) < 0)
+                return ret;
+
+        /* Check if the default format descriptor exists. Use the first
+         * available format otherwise.
+         */
+        for (i = video->streaming->nformats; i > 0; --i) {
+                format = &video->streaming->format[i-1];
+                if (format->index == probe->bFormatIndex)
+                        break;
+        }
+
+        if (format->nframes == 0) {
+                uvc_printk(KERN_INFO, "No frame descriptor found for the "
+                        "default format.\n");
+                return -EINVAL;
+        }
+
+        /* Zero bFrameIndex might be correct. Stream-based formats (including
+         * MPEG-2 TS and DV) do not support frames but have a dummy frame
+         * descriptor with bFrameIndex set to zero. If the default frame
+         * descriptor is not found, use the first avalable frame.
+         */
+        for (i = format->nframes; i > 0; --i) {
+                frame = &format->frame[i-1];
+                if (frame->bFrameIndex == probe->bFrameIndex)
+                        break;
+        }
+
+        /* Commit the default settings. */
+        probe->bFormatIndex = format->index;
+        probe->bFrameIndex = frame->bFrameIndex;
+        if ((ret = uvc_set_video_ctrl(video, probe, 0)) < 0)
+                return ret;
+
+        video->streaming->cur_format = format;
+        video->streaming->cur_frame = frame;
+        atomic_set(&video->active, 0);
+
+        /* Select the video decoding function */
+        if (video->dev->quirks & UVC_QUIRK_BUILTIN_ISIGHT)
+                video->decode = uvc_video_decode_isight;
+        else if (video->streaming->intf->num_altsetting > 1)
+                video->decode = uvc_video_decode_isoc;
+        else
+                video->decode = uvc_video_decode_bulk;
+
+        return 0;
+}
+
+/*
+ * Enable or disable the video stream.
+ */
+int uvc_video_enable(struct uvc_video_device *video, int enable)
+{
+        int ret;
+
+        if (!enable) {
+                uvc_uninit_video(video);
+                usb_set_interface(video->dev->udev,
+                        video->streaming->intfnum, 0);
+                uvc_queue_enable(&video->queue, 0);
+                return 0;
+        }
+
+        if ((ret = uvc_queue_enable(&video->queue, 1)) < 0)
+                return ret;
+
+        return uvc_init_video(video);
+}
diff --git a/drivers/media/video/uvc/uvcvideo.h b/drivers/media/video/uvc/uvcvideo.h
new file mode 100644
index 000000000000..a995a780db1c
--- /dev/null
+++ b/drivers/media/video/uvc/uvcvideo.h
@@ -0,0 +1,796 @@
+#ifndef _USB_VIDEO_H_
+#define _USB_VIDEO_H_
+
+#include <linux/kernel.h>
+#include <linux/videodev2.h>
+
+
+/*
+ * Dynamic controls
+ */
+
+/* Data types for UVC control data */
+#define UVC_CTRL_DATA_TYPE_RAW          0
+#define UVC_CTRL_DATA_TYPE_SIGNED       1
+#define UVC_CTRL_DATA_TYPE_UNSIGNED     2
+#define UVC_CTRL_DATA_TYPE_BOOLEAN      3
+#define UVC_CTRL_DATA_TYPE_ENUM         4
+#define UVC_CTRL_DATA_TYPE_BITMASK      5
+
+/* Control flags */
+#define UVC_CONTROL_SET_CUR     (1 << 0)
+#define UVC_CONTROL_GET_CUR     (1 << 1)
+#define UVC_CONTROL_GET_MIN     (1 << 2)
+#define UVC_CONTROL_GET_MAX     (1 << 3)
+#define UVC_CONTROL_GET_RES     (1 << 4)
+#define UVC_CONTROL_GET_DEF     (1 << 5)
+/* Control should be saved at suspend and restored at resume. */
+#define UVC_CONTROL_RESTORE     (1 << 6)
+/* Control can be updated by the camera. */
+#define UVC_CONTROL_AUTO_UPDATE (1 << 7)
+
+#define UVC_CONTROL_GET_RANGE   (UVC_CONTROL_GET_CUR | UVC_CONTROL_GET_MIN | \
+                                 UVC_CONTROL_GET_MAX | UVC_CONTROL_GET_RES | \
+                                 UVC_CONTROL_GET_DEF)
+
+struct uvc_xu_control_info {
+        __u8 entity[16];
+        __u8 index;
+        __u8 selector;
+        __u16 size;
+        __u32 flags;
+};
+
+struct uvc_xu_control_mapping {
+        __u32 id;
+        __u8 name[32];
+        __u8 entity[16];
+        __u8 selector;
+
+        __u8 size;
+        __u8 offset;
+        enum v4l2_ctrl_type v4l2_type;
+        __u32 data_type;
+};
+
+struct uvc_xu_control {
+        __u8 unit;
+        __u8 selector;
+        __u16 size;
+        __u8 __user *data;
+};
+
+#define UVCIOC_CTRL_ADD         _IOW('U', 1, struct uvc_xu_control_info)
+#define UVCIOC_CTRL_MAP         _IOWR('U', 2, struct uvc_xu_control_mapping)
+#define UVCIOC_CTRL_GET         _IOWR('U', 3, struct uvc_xu_control)
+#define UVCIOC_CTRL_SET         _IOW('U', 4, struct uvc_xu_control)
+
+#ifdef __KERNEL__
+
+#include <linux/poll.h>
+
+/* --------------------------------------------------------------------------
+ * UVC constants
+ */
+
+#define SC_UNDEFINED                    0x00
+#define SC_VIDEOCONTROL                 0x01
+#define SC_VIDEOSTREAMING               0x02
+#define SC_VIDEO_INTERFACE_COLLECTION   0x03
+
+#define PC_PROTOCOL_UNDEFINED           0x00
+
+#define CS_UNDEFINED                    0x20
+#define CS_DEVICE                       0x21
+#define CS_CONFIGURATION                0x22
+#define CS_STRING                       0x23
+#define CS_INTERFACE                    0x24
+#define CS_ENDPOINT                     0x25
+
+/* VideoControl class specific interface descriptor */
+#define VC_DESCRIPTOR_UNDEFINED         0x00
+#define VC_HEADER                       0x01
+#define VC_INPUT_TERMINAL               0x02
+#define VC_OUTPUT_TERMINAL              0x03
+#define VC_SELECTOR_UNIT                0x04
+#define VC_PROCESSING_UNIT              0x05
+#define VC_EXTENSION_UNIT               0x06
+
+/* VideoStreaming class specific interface descriptor */
+#define VS_UNDEFINED                    0x00
+#define VS_INPUT_HEADER                 0x01
+#define VS_OUTPUT_HEADER                0x02
+#define VS_STILL_IMAGE_FRAME            0x03
+#define VS_FORMAT_UNCOMPRESSED          0x04
+#define VS_FRAME_UNCOMPRESSED           0x05
+#define VS_FORMAT_MJPEG                 0x06
+#define VS_FRAME_MJPEG                  0x07
+#define VS_FORMAT_MPEG2TS               0x0a
+#define VS_FORMAT_DV                    0x0c
+#define VS_COLORFORMAT                  0x0d
+#define VS_FORMAT_FRAME_BASED           0x10
+#define VS_FRAME_FRAME_BASED            0x11
+#define VS_FORMAT_STREAM_BASED          0x12
+
+/* Endpoint type */
+#define EP_UNDEFINED                    0x00
+#define EP_GENERAL                      0x01
+#define EP_ENDPOINT                     0x02
+#define EP_INTERRUPT                    0x03
+
+/* Request codes */
+#define RC_UNDEFINED                    0x00
+#define SET_CUR                         0x01
+#define GET_CUR                         0x81
+#define GET_MIN                         0x82
+#define GET_MAX                         0x83
+#define GET_RES                         0x84
+#define GET_LEN                         0x85
+#define GET_INFO                        0x86
+#define GET_DEF                         0x87
+
+/* VideoControl interface controls */
+#define VC_CONTROL_UNDEFINED            0x00
+#define VC_VIDEO_POWER_MODE_CONTROL     0x01
+#define VC_REQUEST_ERROR_CODE_CONTROL   0x02
+
+/* Terminal controls */
+#define TE_CONTROL_UNDEFINED            0x00
+
+/* Selector Unit controls */
+#define SU_CONTROL_UNDEFINED            0x00
+#define SU_INPUT_SELECT_CONTROL         0x01
+
+/* Camera Terminal controls */
+#define CT_CONTROL_UNDEFINED                            0x00
+#define CT_SCANNING_MODE_CONTROL                        0x01
+#define CT_AE_MODE_CONTROL                              0x02
+#define CT_AE_PRIORITY_CONTROL                          0x03
+#define CT_EXPOSURE_TIME_ABSOLUTE_CONTROL               0x04
+#define CT_EXPOSURE_TIME_RELATIVE_CONTROL               0x05
+#define CT_FOCUS_ABSOLUTE_CONTROL                       0x06
+#define CT_FOCUS_RELATIVE_CONTROL                       0x07
+#define CT_FOCUS_AUTO_CONTROL                           0x08
+#define CT_IRIS_ABSOLUTE_CONTROL                        0x09
+#define CT_IRIS_RELATIVE_CONTROL                        0x0a
+#define CT_ZOOM_ABSOLUTE_CONTROL                        0x0b
+#define CT_ZOOM_RELATIVE_CONTROL                        0x0c
+#define CT_PANTILT_ABSOLUTE_CONTROL                     0x0d
+#define CT_PANTILT_RELATIVE_CONTROL                     0x0e
+#define CT_ROLL_ABSOLUTE_CONTROL                        0x0f
+#define CT_ROLL_RELATIVE_CONTROL                        0x10
+#define CT_PRIVACY_CONTROL                              0x11
+
+/* Processing Unit controls */
+#define PU_CONTROL_UNDEFINED                            0x00
+#define PU_BACKLIGHT_COMPENSATION_CONTROL               0x01
+#define PU_BRIGHTNESS_CONTROL                           0x02
+#define PU_CONTRAST_CONTROL                             0x03
+#define PU_GAIN_CONTROL                                 0x04
+#define PU_POWER_LINE_FREQUENCY_CONTROL                 0x05
+#define PU_HUE_CONTROL                                  0x06
+#define PU_SATURATION_CONTROL                           0x07
+#define PU_SHARPNESS_CONTROL                            0x08
+#define PU_GAMMA_CONTROL                                0x09
+#define PU_WHITE_BALANCE_TEMPERATURE_CONTROL            0x0a
+#define PU_WHITE_BALANCE_TEMPERATURE_AUTO_CONTROL       0x0b
+#define PU_WHITE_BALANCE_COMPONENT_CONTROL              0x0c
+#define PU_WHITE_BALANCE_COMPONENT_AUTO_CONTROL         0x0d
+#define PU_DIGITAL_MULTIPLIER_CONTROL                   0x0e
+#define PU_DIGITAL_MULTIPLIER_LIMIT_CONTROL             0x0f
+#define PU_HUE_AUTO_CONTROL                             0x10
+#define PU_ANALOG_VIDEO_STANDARD_CONTROL                0x11
+#define PU_ANALOG_LOCK_STATUS_CONTROL                   0x12
+
+#define LXU_MOTOR_PANTILT_RELATIVE_CONTROL              0x01
+#define LXU_MOTOR_PANTILT_RESET_CONTROL                 0x02
+#define LXU_MOTOR_FOCUS_MOTOR_CONTROL                   0x03
+
+/* VideoStreaming interface controls */
+#define VS_CONTROL_UNDEFINED            0x00
+#define VS_PROBE_CONTROL                0x01
+#define VS_COMMIT_CONTROL               0x02
+#define VS_STILL_PROBE_CONTROL          0x03
+#define VS_STILL_COMMIT_CONTROL         0x04
+#define VS_STILL_IMAGE_TRIGGER_CONTROL  0x05
+#define VS_STREAM_ERROR_CODE_CONTROL    0x06
+#define VS_GENERATE_KEY_FRAME_CONTROL   0x07
+#define VS_UPDATE_FRAME_SEGMENT_CONTROL 0x08
+#define VS_SYNC_DELAY_CONTROL           0x09
+
+#define TT_VENDOR_SPECIFIC              0x0100
+#define TT_STREAMING                    0x0101
+
+/* Input Terminal types */
+#define ITT_VENDOR_SPECIFIC             0x0200
+#define ITT_CAMERA                      0x0201
+#define ITT_MEDIA_TRANSPORT_INPUT       0x0202
+
+/* Output Terminal types */
+#define OTT_VENDOR_SPECIFIC             0x0300
+#define OTT_DISPLAY                     0x0301
+#define OTT_MEDIA_TRANSPORT_OUTPUT      0x0302
+
+/* External Terminal types */
+#define EXTERNAL_VENDOR_SPECIFIC        0x0400
+#define COMPOSITE_CONNECTOR             0x0401
+#define SVIDEO_CONNECTOR                0x0402
+#define COMPONENT_CONNECTOR             0x0403
+
+#define UVC_TERM_INPUT                  0x0000
+#define UVC_TERM_OUTPUT                 0x8000
+
+#define UVC_ENTITY_TYPE(entity)         ((entity)->type & 0x7fff)
+#define UVC_ENTITY_IS_UNIT(entity)      (((entity)->type & 0xff00) == 0)
+#define UVC_ENTITY_IS_TERM(entity)      (((entity)->type & 0xff00) != 0)
+#define UVC_ENTITY_IS_ITERM(entity) \
+        (((entity)->type & 0x8000) == UVC_TERM_INPUT)
+#define UVC_ENTITY_IS_OTERM(entity) \
+        (((entity)->type & 0x8000) == UVC_TERM_OUTPUT)
+
+#define UVC_STATUS_TYPE_CONTROL         1
+#define UVC_STATUS_TYPE_STREAMING       2
+
+/* ------------------------------------------------------------------------
+ * GUIDs
+ */
+#define UVC_GUID_UVC_CAMERA \
+        {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
+         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01}
+#define UVC_GUID_UVC_OUTPUT \
+        {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
+         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02}
+#define UVC_GUID_UVC_MEDIA_TRANSPORT_INPUT \
+        {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
+         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03}
+#define UVC_GUID_UVC_PROCESSING \
+        {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
+         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01}
+#define UVC_GUID_UVC_SELECTOR \
+        {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
+         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02}
+
+#define UVC_GUID_LOGITECH_DEV_INFO \
+        {0x82, 0x06, 0x61, 0x63, 0x70, 0x50, 0xab, 0x49, \
+         0xb8, 0xcc, 0xb3, 0x85, 0x5e, 0x8d, 0x22, 0x1e}
+#define UVC_GUID_LOGITECH_USER_HW \
+        {0x82, 0x06, 0x61, 0x63, 0x70, 0x50, 0xab, 0x49, \
+         0xb8, 0xcc, 0xb3, 0x85, 0x5e, 0x8d, 0x22, 0x1f}
+#define UVC_GUID_LOGITECH_VIDEO \
+        {0x82, 0x06, 0x61, 0x63, 0x70, 0x50, 0xab, 0x49, \
+         0xb8, 0xcc, 0xb3, 0x85, 0x5e, 0x8d, 0x22, 0x50}
+#define UVC_GUID_LOGITECH_MOTOR \
+        {0x82, 0x06, 0x61, 0x63, 0x70, 0x50, 0xab, 0x49, \
+         0xb8, 0xcc, 0xb3, 0x85, 0x5e, 0x8d, 0x22, 0x56}
+
+#define UVC_GUID_FORMAT_MJPEG \
+        { 'M',  'J',  'P',  'G', 0x00, 0x00, 0x10, 0x00, \
+         0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
+#define UVC_GUID_FORMAT_YUY2 \
+        { 'Y',  'U',  'Y',  '2', 0x00, 0x00, 0x10, 0x00, \
+         0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
+#define UVC_GUID_FORMAT_NV12 \
+        { 'N',  'V',  '1',  '2', 0x00, 0x00, 0x10, 0x00, \
+         0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
+#define UVC_GUID_FORMAT_YV12 \
+        { 'Y',  'V',  '1',  '2', 0x00, 0x00, 0x10, 0x00, \
+         0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
+#define UVC_GUID_FORMAT_I420 \
+        { 'I',  '4',  '2',  '0', 0x00, 0x00, 0x10, 0x00, \
+         0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
+#define UVC_GUID_FORMAT_UYVY \
+        { 'U',  'Y',  'V',  'Y', 0x00, 0x00, 0x10, 0x00, \
+         0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
+#define UVC_GUID_FORMAT_Y800 \
+        { 'Y',  '8',  '0',  '0', 0x00, 0x00, 0x10, 0x00, \
+         0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
+#define UVC_GUID_FORMAT_BY8 \
+        { 'B',  'Y',  '8',  ' ', 0x00, 0x00, 0x10, 0x00, \
+         0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
+
+
+/* ------------------------------------------------------------------------
+ * Driver specific constants.
+ */
+
+#define DRIVER_VERSION_NUMBER   KERNEL_VERSION(0, 1, 0)
+
+/* Number of isochronous URBs. */
+#define UVC_URBS                5
+/* Maximum number of packets per isochronous URB. */
+#define UVC_MAX_ISO_PACKETS     40
+/* Maximum frame size in bytes, for sanity checking. */
+#define UVC_MAX_FRAME_SIZE      (16*1024*1024)
+/* Maximum number of video buffers. */
+#define UVC_MAX_VIDEO_BUFFERS   32
+
+#define UVC_CTRL_CONTROL_TIMEOUT        300
+#define UVC_CTRL_STREAMING_TIMEOUT      1000
+
+/* Devices quirks */
+#define UVC_QUIRK_STATUS_INTERVAL       0x00000001
+#define UVC_QUIRK_PROBE_MINMAX          0x00000002
+#define UVC_QUIRK_PROBE_EXTRAFIELDS     0x00000004
+#define UVC_QUIRK_BUILTIN_ISIGHT        0x00000008
+#define UVC_QUIRK_STREAM_NO_FID         0x00000010
+#define UVC_QUIRK_IGNORE_SELECTOR_UNIT  0x00000020
+
+/* Format flags */
+#define UVC_FMT_FLAG_COMPRESSED         0x00000001
+#define UVC_FMT_FLAG_STREAM             0x00000002
+
+/* ------------------------------------------------------------------------
+ * Structures.
+ */
+
+struct uvc_device;
+
+/* TODO: Put the most frequently accessed fields at the beginning of
+ * structures to maximize cache efficiency.
+ */
+struct uvc_streaming_control {
+        __u16 bmHint;
+        __u8  bFormatIndex;
+        __u8  bFrameIndex;
+        __u32 dwFrameInterval;
+        __u16 wKeyFrameRate;
+        __u16 wPFrameRate;
+        __u16 wCompQuality;
+        __u16 wCompWindowSize;
+        __u16 wDelay;
+        __u32 dwMaxVideoFrameSize;
+        __u32 dwMaxPayloadTransferSize;
+        __u32 dwClockFrequency;
+        __u8  bmFramingInfo;
+        __u8  bPreferedVersion;
+        __u8  bMinVersion;
+        __u8  bMaxVersion;
+};
+
+struct uvc_menu_info {
+        __u32 value;
+        __u8 name[32];
+};
+
+struct uvc_control_info {
+        struct list_head list;
+        struct list_head mappings;
+
+        __u8 entity[16];
+        __u8 index;
+        __u8 selector;
+
+        __u16 size;
+        __u32 flags;
+};
+
+struct uvc_control_mapping {
+        struct list_head list;
+
+        struct uvc_control_info *ctrl;
+
+        __u32 id;
+        __u8 name[32];
+        __u8 entity[16];
+        __u8 selector;
+
+        __u8 size;
+        __u8 offset;
+        enum v4l2_ctrl_type v4l2_type;
+        __u32 data_type;
+
+        struct uvc_menu_info *menu_info;
+        __u32 menu_count;
+};
+
+struct uvc_control {
+        struct uvc_entity *entity;
+        struct uvc_control_info *info;
+
+        __u8 index;     /* Used to match the uvc_control entry with a
+                           uvc_control_info. */
+        __u8 dirty : 1,
+             loaded : 1,
+             modified : 1;
+
+        __u8 *data;
+};
+
+struct uvc_format_desc {
+        char *name;
+        __u8 guid[16];
+        __u32 fcc;
+};
+
+/* The term 'entity' refers to both UVC units and UVC terminals.
+ *
+ * The type field is either the terminal type (wTerminalType in the terminal
+ * descriptor), or the unit type (bDescriptorSubtype in the unit descriptor).
+ * As the bDescriptorSubtype field is one byte long, the type value will
+ * always have a null MSB for units. All terminal types defined by the UVC
+ * specification have a non-null MSB, so it is safe to use the MSB to
+ * differentiate between units and terminals as long as the descriptor parsing
+ * code makes sure terminal types have a non-null MSB.
+ *
+ * For terminals, the type's most significant bit stores the terminal
+ * direction (either UVC_TERM_INPUT or UVC_TERM_OUTPUT). The type field should
+ * always be accessed with the UVC_ENTITY_* macros and never directly.
+ */
+
+struct uvc_entity {
+        struct list_head list;          /* Entity as part of a UVC device. */
+        struct list_head chain;         /* Entity as part of a video device
+                                         * chain. */
+        __u8 id;
+        __u16 type;
+        char name[64];
+
+        union {
+                struct {
+                        __u16 wObjectiveFocalLengthMin;
+                        __u16 wObjectiveFocalLengthMax;
+                        __u16 wOcularFocalLength;
+                        __u8  bControlSize;
+                        __u8  *bmControls;
+                } camera;
+
+                struct {
+                        __u8  bControlSize;
+                        __u8  *bmControls;
+                        __u8  bTransportModeSize;
+                        __u8  *bmTransportModes;
+                } media;
+
+                struct {
+                        __u8  bSourceID;
+                } output;
+
+                struct {
+                        __u8  bSourceID;
+                        __u16 wMaxMultiplier;
+                        __u8  bControlSize;
+                        __u8  *bmControls;
+                        __u8  bmVideoStandards;
+                } processing;
+
+                struct {
+                        __u8  bNrInPins;
+                        __u8  *baSourceID;
+                } selector;
+
+                struct {
+                        __u8  guidExtensionCode[16];
+                        __u8  bNumControls;
+                        __u8  bNrInPins;
+                        __u8  *baSourceID;
+                        __u8  bControlSize;
+                        __u8  *bmControls;
+                        __u8  *bmControlsType;
+                } extension;
+        };
+
+        unsigned int ncontrols;
+        struct uvc_control *controls;
+};
+
+struct uvc_frame {
+        __u8  bFrameIndex;
+        __u8  bmCapabilities;
+        __u16 wWidth;
+        __u16 wHeight;
+        __u32 dwMinBitRate;
+        __u32 dwMaxBitRate;
+        __u32 dwMaxVideoFrameBufferSize;
+        __u8  bFrameIntervalType;
+        __u32 dwDefaultFrameInterval;
+        __u32 *dwFrameInterval;
+};
+
+struct uvc_format {
+        __u8 type;
+        __u8 index;
+        __u8 bpp;
+        __u8 colorspace;
+        __u32 fcc;
+        __u32 flags;
+
+        char name[32];
+
+        unsigned int nframes;
+        struct uvc_frame *frame;
+};
+
+struct uvc_streaming_header {
+        __u8 bNumFormats;
+        __u8 bEndpointAddress;
+        __u8 bTerminalLink;
+        __u8 bControlSize;
+        __u8 *bmaControls;
+        /* The following fields are used by input headers only. */
+        __u8 bmInfo;
+        __u8 bStillCaptureMethod;
+        __u8 bTriggerSupport;
+        __u8 bTriggerUsage;
+};
+
+struct uvc_streaming {
+        struct list_head list;
+
+        struct usb_interface *intf;
+        int intfnum;
+        __u16 maxpsize;
+
+        struct uvc_streaming_header header;
+
+        unsigned int nformats;
+        struct uvc_format *format;
+
+        struct uvc_streaming_control ctrl;
+        struct uvc_format *cur_format;
+        struct uvc_frame *cur_frame;
+
+        struct mutex mutex;
+};
+
+enum uvc_buffer_state {
+        UVC_BUF_STATE_IDLE       = 0,
+        UVC_BUF_STATE_QUEUED     = 1,
+        UVC_BUF_STATE_ACTIVE     = 2,
+        UVC_BUF_STATE_DONE       = 3,
+        UVC_BUF_STATE_ERROR      = 4,
+};
+
+struct uvc_buffer {
+        unsigned long vma_use_count;
+        struct list_head stream;
+
+        /* Touched by interrupt handler. */
+        struct v4l2_buffer buf;
+        struct list_head queue;
+        wait_queue_head_t wait;
+        enum uvc_buffer_state state;
+};
+
+#define UVC_QUEUE_STREAMING             (1 << 0)
+#define UVC_QUEUE_DISCONNECTED          (1 << 1)
+#define UVC_QUEUE_DROP_INCOMPLETE       (1 << 2)
+
+struct uvc_video_queue {
+        void *mem;
+        unsigned int flags;
+        __u32 sequence;
+
+        unsigned int count;
+        unsigned int buf_size;
+        struct uvc_buffer buffer[UVC_MAX_VIDEO_BUFFERS];
+        struct mutex mutex;     /* protects buffers and mainqueue */
+        spinlock_t irqlock;     /* protects irqqueue */
+
+        struct list_head mainqueue;
+        struct list_head irqqueue;
+};
+
+struct uvc_video_device {
+        struct uvc_device *dev;
+        struct video_device *vdev;
+        atomic_t active;
+        unsigned int frozen : 1;
+
+        struct list_head iterms;
+        struct uvc_entity *oterm;
+        struct uvc_entity *processing;
+        struct uvc_entity *selector;
+        struct list_head extensions;
+        struct mutex ctrl_mutex;
+
+        struct uvc_video_queue queue;
+
+        /* Video streaming object, must always be non-NULL. */
+        struct uvc_streaming *streaming;
+
+        void (*decode) (struct urb *urb, struct uvc_video_device *video,
+                        struct uvc_buffer *buf);
+
+        /* Context data used by the bulk completion handler. */
+        struct {
+                __u8 header[256];
+                unsigned int header_size;
+                int skip_payload;
+                __u32 payload_size;
+                __u32 max_payload_size;
+        } bulk;
+
+        struct urb *urb[UVC_URBS];
+        char *urb_buffer[UVC_URBS];
+
+        __u8 last_fid;
+};
+
+enum uvc_device_state {
+        UVC_DEV_DISCONNECTED = 1,
+};
+
+struct uvc_device {
+        struct usb_device *udev;
+        struct usb_interface *intf;
+        __u32 quirks;
+        int intfnum;
+        char name[32];
+
+        enum uvc_device_state state;
+        struct kref kref;
+        struct list_head list;
+
+        /* Video control interface */
+        __u16 uvc_version;
+        __u32 clock_frequency;
+
+        struct list_head entities;
+
+        struct uvc_video_device video;
+
+        /* Status Interrupt Endpoint */
+        struct usb_host_endpoint *int_ep;
+        struct urb *int_urb;
+        __u8 status[16];
+        struct input_dev *input;
+
+        /* Video Streaming interfaces */
+        struct list_head streaming;
+};
+
+enum uvc_handle_state {
+        UVC_HANDLE_PASSIVE      = 0,
+        UVC_HANDLE_ACTIVE       = 1,
+};
+
+struct uvc_fh {
+        struct uvc_video_device *device;
+        enum uvc_handle_state state;
+};
+
+struct uvc_driver {
+        struct usb_driver driver;
+
+        struct mutex open_mutex;        /* protects from open/disconnect race */
+
+        struct list_head devices;       /* struct uvc_device list */
+        struct list_head controls;      /* struct uvc_control_info list */
+        struct mutex ctrl_mutex;        /* protects controls and devices
+                                           lists */
+};
+
+/* ------------------------------------------------------------------------
+ * Debugging, printing and logging
+ */
+
+#define UVC_TRACE_PROBE         (1 << 0)
+#define UVC_TRACE_DESCR         (1 << 1)
+#define UVC_TRACE_CONTROL       (1 << 2)
+#define UVC_TRACE_FORMAT        (1 << 3)
+#define UVC_TRACE_CAPTURE       (1 << 4)
+#define UVC_TRACE_CALLS         (1 << 5)
+#define UVC_TRACE_IOCTL         (1 << 6)
+#define UVC_TRACE_FRAME         (1 << 7)
+#define UVC_TRACE_SUSPEND       (1 << 8)
+#define UVC_TRACE_STATUS        (1 << 9)
+
+extern unsigned int uvc_trace_param;
+
+#define uvc_trace(flag, msg...) \
+        do { \
+                if (uvc_trace_param & flag) \
+                        printk(KERN_DEBUG "uvcvideo: " msg); \
+        } while (0)
+
+#define uvc_printk(level, msg...) \
+        printk(level "uvcvideo: " msg)
+
+#define UVC_GUID_FORMAT "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-" \
+                        "%02x%02x%02x%02x%02x%02x"
+#define UVC_GUID_ARGS(guid) \
+        (guid)[3],  (guid)[2],  (guid)[1],  (guid)[0], \
+        (guid)[5],  (guid)[4], \
+        (guid)[7],  (guid)[6], \
+        (guid)[8],  (guid)[9], \
+        (guid)[10], (guid)[11], (guid)[12], \
+        (guid)[13], (guid)[14], (guid)[15]
+
+/* --------------------------------------------------------------------------
+ * Internal functions.
+ */
+
+/* Core driver */
+extern struct uvc_driver uvc_driver;
+extern void uvc_delete(struct kref *kref);
+
+/* Video buffers queue management. */
+extern void uvc_queue_init(struct uvc_video_queue *queue);
+extern int uvc_alloc_buffers(struct uvc_video_queue *queue,
+                unsigned int nbuffers, unsigned int buflength);
+extern int uvc_free_buffers(struct uvc_video_queue *queue);
+extern int uvc_query_buffer(struct uvc_video_queue *queue,
+                struct v4l2_buffer *v4l2_buf);
+extern int uvc_queue_buffer(struct uvc_video_queue *queue,
+                struct v4l2_buffer *v4l2_buf);
+extern int uvc_dequeue_buffer(struct uvc_video_queue *queue,
+                struct v4l2_buffer *v4l2_buf, int nonblocking);
+extern int uvc_queue_enable(struct uvc_video_queue *queue, int enable);
+extern void uvc_queue_cancel(struct uvc_video_queue *queue, int disconnect);
+extern struct uvc_buffer *uvc_queue_next_buffer(struct uvc_video_queue *queue,
+                struct uvc_buffer *buf);
+extern unsigned int uvc_queue_poll(struct uvc_video_queue *queue,
+                struct file *file, poll_table *wait);
+static inline int uvc_queue_streaming(struct uvc_video_queue *queue)
+{
+        return queue->flags & UVC_QUEUE_STREAMING;
+}
+
+/* V4L2 interface */
+extern struct file_operations uvc_fops;
+
+/* Video */
+extern int uvc_video_init(struct uvc_video_device *video);
+extern int uvc_video_suspend(struct uvc_video_device *video);
+extern int uvc_video_resume(struct uvc_video_device *video);
+extern int uvc_video_enable(struct uvc_video_device *video, int enable);
+extern int uvc_probe_video(struct uvc_video_device *video,
+                struct uvc_streaming_control *probe);
+extern int uvc_query_ctrl(struct uvc_device *dev, __u8 query, __u8 unit,
+                __u8 intfnum, __u8 cs, void *data, __u16 size);
+extern int uvc_set_video_ctrl(struct uvc_video_device *video,
+                struct uvc_streaming_control *ctrl, int probe);
+
+/* Status */
+extern int uvc_status_init(struct uvc_device *dev);
+extern void uvc_status_cleanup(struct uvc_device *dev);
+extern int uvc_status_suspend(struct uvc_device *dev);
+extern int uvc_status_resume(struct uvc_device *dev);
+
+/* Controls */
+extern struct uvc_control *uvc_find_control(struct uvc_video_device *video,
+                __u32 v4l2_id, struct uvc_control_mapping **mapping);
+extern int uvc_query_v4l2_ctrl(struct uvc_video_device *video,
+                struct v4l2_queryctrl *v4l2_ctrl);
+
+extern int uvc_ctrl_add_info(struct uvc_control_info *info);
+extern int uvc_ctrl_add_mapping(struct uvc_control_mapping *mapping);
+extern int uvc_ctrl_init_device(struct uvc_device *dev);
+extern void uvc_ctrl_cleanup_device(struct uvc_device *dev);
+extern int uvc_ctrl_resume_device(struct uvc_device *dev);
+extern void uvc_ctrl_init(void);
+
+extern int uvc_ctrl_begin(struct uvc_video_device *video);
+extern int __uvc_ctrl_commit(struct uvc_video_device *video, int rollback);
+static inline int uvc_ctrl_commit(struct uvc_video_device *video)
+{
+        return __uvc_ctrl_commit(video, 0);
+}
+static inline int uvc_ctrl_rollback(struct uvc_video_device *video)
+{
+        return __uvc_ctrl_commit(video, 1);
+}
+
+extern int uvc_ctrl_get(struct uvc_video_device *video,
+                struct v4l2_ext_control *xctrl);
+extern int uvc_ctrl_set(struct uvc_video_device *video,
+                struct v4l2_ext_control *xctrl);
+
+extern int uvc_xu_ctrl_query(struct uvc_video_device *video,
+                struct uvc_xu_control *ctrl, int set);
+
+/* Utility functions */
+extern void uvc_simplify_fraction(uint32_t *numerator, uint32_t *denominator,
+                unsigned int n_terms, unsigned int threshold);
+extern uint32_t uvc_fraction_to_interval(uint32_t numerator,
+                uint32_t denominator);
+extern struct usb_host_endpoint *uvc_find_endpoint(
+                struct usb_host_interface *alts, __u8 epaddr);
+
+/* Quirks support */
+void uvc_video_decode_isight(struct urb *urb, struct uvc_video_device *video,
+                struct uvc_buffer *buf);
+
+#endif /* __KERNEL__ */
+
+#endif
diff --git a/drivers/media/video/videodev.c b/drivers/media/video/videodev.c
index 31e8af0ba278..67a661cf5219 100644
--- a/drivers/media/video/videodev.c
+++ b/drivers/media/video/videodev.c
@@ -51,12 +51,51 @@
 #define VIDEO_NUM_DEVICES       256
 #define VIDEO_NAME              "video4linux"
 
+struct std_descr {
+        v4l2_std_id std;
+        const char *descr;
+};
+
+static const struct std_descr standards[] = {
+        { V4L2_STD_NTSC,        "NTSC"      },
+        { V4L2_STD_NTSC_M,      "NTSC-M"    },
+        { V4L2_STD_NTSC_M_JP,   "NTSC-M-JP" },
+        { V4L2_STD_NTSC_M_KR,   "NTSC-M-KR" },
+        { V4L2_STD_NTSC_443,    "NTSC-443"  },
+        { V4L2_STD_PAL,         "PAL"       },
+        { V4L2_STD_PAL_BG,      "PAL-BG"    },
+        { V4L2_STD_PAL_B,       "PAL-B"     },
+        { V4L2_STD_PAL_B1,      "PAL-B1"    },
+        { V4L2_STD_PAL_G,       "PAL-G"     },
+        { V4L2_STD_PAL_H,       "PAL-H"     },
+        { V4L2_STD_PAL_I,       "PAL-I"     },
+        { V4L2_STD_PAL_DK,      "PAL-DK"    },
+        { V4L2_STD_PAL_D,       "PAL-D"     },
+        { V4L2_STD_PAL_D1,      "PAL-D1"    },
+        { V4L2_STD_PAL_K,       "PAL-K"     },
+        { V4L2_STD_PAL_M,       "PAL-M"     },
+        { V4L2_STD_PAL_N,       "PAL-N"     },
+        { V4L2_STD_PAL_Nc,      "PAL-Nc"    },
+        { V4L2_STD_PAL_60,      "PAL-60"    },
+        { V4L2_STD_SECAM,       "SECAM"     },
+        { V4L2_STD_SECAM_B,     "SECAM-B"   },
+        { V4L2_STD_SECAM_G,     "SECAM-G"   },
+        { V4L2_STD_SECAM_H,     "SECAM-H"   },
+        { V4L2_STD_SECAM_DK,    "SECAM-DK"  },
+        { V4L2_STD_SECAM_D,     "SECAM-D"   },
+        { V4L2_STD_SECAM_K,     "SECAM-K"   },
+        { V4L2_STD_SECAM_K1,    "SECAM-K1"  },
+        { V4L2_STD_SECAM_L,     "SECAM-L"   },
+        { V4L2_STD_SECAM_LC,    "SECAM-Lc"  },
+        { 0,                    "Unknown"   }
+};
+
 /* video4linux standard ID conversion to standard name
  */
-char *v4l2_norm_to_name(v4l2_std_id id)
+const char *v4l2_norm_to_name(v4l2_std_id id)
 {
-        char *name;
         u32 myid = id;
+        int i;
 
         /* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle
            64 bit comparations. So, on that architecture, with some gcc
@@ -64,110 +103,17 @@ char *v4l2_norm_to_name(v4l2_std_id id)
          */
         BUG_ON(myid != id);
 
-        switch (myid) {
-        case V4L2_STD_PAL:
-                name = "PAL";
-                break;
-        case V4L2_STD_PAL_BG:
-                name = "PAL-BG";
-                break;
-        case V4L2_STD_PAL_DK:
-                name = "PAL-DK";
-                break;
-        case V4L2_STD_PAL_B:
-                name = "PAL-B";
-                break;
-        case V4L2_STD_PAL_B1:
-                name = "PAL-B1";
-                break;
-        case V4L2_STD_PAL_G:
-                name = "PAL-G";
-                break;
-        case V4L2_STD_PAL_H:
-                name = "PAL-H";
-                break;
-        case V4L2_STD_PAL_I:
-                name = "PAL-I";
-                break;
-        case V4L2_STD_PAL_D:
-                name = "PAL-D";
-                break;
-        case V4L2_STD_PAL_D1:
-                name = "PAL-D1";
-                break;
-        case V4L2_STD_PAL_K:
-                name = "PAL-K";
-                break;
-        case V4L2_STD_PAL_M:
-                name = "PAL-M";
-                break;
-        case V4L2_STD_PAL_N:
-                name = "PAL-N";
-                break;
-        case V4L2_STD_PAL_Nc:
-                name = "PAL-Nc";
-                break;
-        case V4L2_STD_PAL_60:
-                name = "PAL-60";
-                break;
-        case V4L2_STD_NTSC:
-                name = "NTSC";
-                break;
-        case V4L2_STD_NTSC_M:
-                name = "NTSC-M";
-                break;
-        case V4L2_STD_NTSC_M_JP:
-                name = "NTSC-M-JP";
-                break;
-        case V4L2_STD_NTSC_443:
-                name = "NTSC-443";
-                break;
-        case V4L2_STD_NTSC_M_KR:
-                name = "NTSC-M-KR";
-                break;
-        case V4L2_STD_SECAM:
-                name = "SECAM";
-                break;
-        case V4L2_STD_SECAM_DK:
-                name = "SECAM-DK";
-                break;
-        case V4L2_STD_SECAM_B:
-                name = "SECAM-B";
-                break;
-        case V4L2_STD_SECAM_D:
-                name = "SECAM-D";
-                break;
-        case V4L2_STD_SECAM_G:
-                name = "SECAM-G";
-                break;
-        case V4L2_STD_SECAM_H:
-                name = "SECAM-H";
-                break;
-        case V4L2_STD_SECAM_K:
-                name = "SECAM-K";
-                break;
-        case V4L2_STD_SECAM_K1:
-                name = "SECAM-K1";
-                break;
-        case V4L2_STD_SECAM_L:
-                name = "SECAM-L";
-                break;
-        case V4L2_STD_SECAM_LC:
-                name = "SECAM-LC";
-                break;
-        default:
-                name = "Unknown";
-                break;
-        }
-
-        return name;
+        for (i = 0; standards[i].std; i++)
+                if (myid == standards[i].std)
+                        break;
+        return standards[i].descr;
 }
 EXPORT_SYMBOL(v4l2_norm_to_name);
 
 /* Fill in the fields of a v4l2_standard structure according to the
    'id' and 'transmission' parameters.  Returns negative on error.  */
 int v4l2_video_std_construct(struct v4l2_standard *vs,
-                             int id, char *name)
+                             int id, const char *name)
 {
         u32 index = vs->index;
 
@@ -1218,95 +1164,40 @@ static int __video_do_ioctl(struct inode *inode, struct file *file,
         case VIDIOC_ENUMSTD:
         {
                 struct v4l2_standard *p = arg;
-                v4l2_std_id id = vfd->tvnorms,curr_id=0;
-                unsigned int index = p->index,i;
-
-                if (index<0) {
-                        ret=-EINVAL;
-                        break;
-                }
-
-                /* Return norm array on a canonical way */
-                for (i=0;i<= index && id; i++) {
-                        if ( (id & V4L2_STD_PAL) == V4L2_STD_PAL) {
-                                curr_id = V4L2_STD_PAL;
-                        } else if ( (id & V4L2_STD_PAL_BG) == V4L2_STD_PAL_BG) {
-                                curr_id = V4L2_STD_PAL_BG;
-                        } else if ( (id & V4L2_STD_PAL_DK) == V4L2_STD_PAL_DK) {
-                                curr_id = V4L2_STD_PAL_DK;
-                        } else if ( (id & V4L2_STD_PAL_B) == V4L2_STD_PAL_B) {
-                                curr_id = V4L2_STD_PAL_B;
-                        } else if ( (id & V4L2_STD_PAL_B1) == V4L2_STD_PAL_B1) {
-                                curr_id = V4L2_STD_PAL_B1;
-                        } else if ( (id & V4L2_STD_PAL_G) == V4L2_STD_PAL_G) {
-                                curr_id = V4L2_STD_PAL_G;
-                        } else if ( (id & V4L2_STD_PAL_H) == V4L2_STD_PAL_H) {
-                                curr_id = V4L2_STD_PAL_H;
-                        } else if ( (id & V4L2_STD_PAL_I) == V4L2_STD_PAL_I) {
-                                curr_id = V4L2_STD_PAL_I;
-                        } else if ( (id & V4L2_STD_PAL_D) == V4L2_STD_PAL_D) {
-                                curr_id = V4L2_STD_PAL_D;
-                        } else if ( (id & V4L2_STD_PAL_D1) == V4L2_STD_PAL_D1) {
-                                curr_id = V4L2_STD_PAL_D1;
-                        } else if ( (id & V4L2_STD_PAL_K) == V4L2_STD_PAL_K) {
-                                curr_id = V4L2_STD_PAL_K;
-                        } else if ( (id & V4L2_STD_PAL_M) == V4L2_STD_PAL_M) {
-                                curr_id = V4L2_STD_PAL_M;
-                        } else if ( (id & V4L2_STD_PAL_N) == V4L2_STD_PAL_N) {
-                                curr_id = V4L2_STD_PAL_N;
-                        } else if ( (id & V4L2_STD_PAL_Nc) == V4L2_STD_PAL_Nc) {
-                                curr_id = V4L2_STD_PAL_Nc;
-                        } else if ( (id & V4L2_STD_PAL_60) == V4L2_STD_PAL_60) {
-                                curr_id = V4L2_STD_PAL_60;
-                        } else if ( (id & V4L2_STD_NTSC) == V4L2_STD_NTSC) {
-                                curr_id = V4L2_STD_NTSC;
-                        } else if ( (id & V4L2_STD_NTSC_M) == V4L2_STD_NTSC_M) {
-                                curr_id = V4L2_STD_NTSC_M;
-                        } else if ( (id & V4L2_STD_NTSC_M_JP) == V4L2_STD_NTSC_M_JP) {
-                                curr_id = V4L2_STD_NTSC_M_JP;
-                        } else if ( (id & V4L2_STD_NTSC_443) == V4L2_STD_NTSC_443) {
-                                curr_id = V4L2_STD_NTSC_443;
-                        } else if ( (id & V4L2_STD_NTSC_M_KR) == V4L2_STD_NTSC_M_KR) {
-                                curr_id = V4L2_STD_NTSC_M_KR;
-                        } else if ( (id & V4L2_STD_SECAM) == V4L2_STD_SECAM) {
-                                curr_id = V4L2_STD_SECAM;
-                        } else if ( (id & V4L2_STD_SECAM_DK) == V4L2_STD_SECAM_DK) {
-                                curr_id = V4L2_STD_SECAM_DK;
-                        } else if ( (id & V4L2_STD_SECAM_B) == V4L2_STD_SECAM_B) {
-                                curr_id = V4L2_STD_SECAM_B;
-                        } else if ( (id & V4L2_STD_SECAM_D) == V4L2_STD_SECAM_D) {
-                                curr_id = V4L2_STD_SECAM_D;
-                        } else if ( (id & V4L2_STD_SECAM_G) == V4L2_STD_SECAM_G) {
-                                curr_id = V4L2_STD_SECAM_G;
-                        } else if ( (id & V4L2_STD_SECAM_H) == V4L2_STD_SECAM_H) {
-                                curr_id = V4L2_STD_SECAM_H;
-                        } else if ( (id & V4L2_STD_SECAM_K) == V4L2_STD_SECAM_K) {
-                                curr_id = V4L2_STD_SECAM_K;
-                        } else if ( (id & V4L2_STD_SECAM_K1) == V4L2_STD_SECAM_K1) {
-                                curr_id = V4L2_STD_SECAM_K1;
-                        } else if ( (id & V4L2_STD_SECAM_L) == V4L2_STD_SECAM_L) {
-                                curr_id = V4L2_STD_SECAM_L;
-                        } else if ( (id & V4L2_STD_SECAM_LC) == V4L2_STD_SECAM_LC) {
-                                curr_id = V4L2_STD_SECAM_LC;
-                        } else {
+                v4l2_std_id id = vfd->tvnorms, curr_id = 0;
+                unsigned int index = p->index, i, j = 0;
+                const char *descr = "";
+
+                /* Return norm array in a canonical way */
+                for (i = 0; i <= index && id; i++) {
+                        /* last std value in the standards array is 0, so this
+                           while always ends there since (id & 0) == 0. */
+                        while ((id & standards[j].std) != standards[j].std)
+                                j++;
+                        curr_id = standards[j].std;
+                        descr = standards[j].descr;
+                        j++;
+                        if (curr_id == 0)
                                 break;
-                        }
-                        id &= ~curr_id;
+                        if (curr_id != V4L2_STD_PAL &&
+                            curr_id != V4L2_STD_SECAM &&
+                            curr_id != V4L2_STD_NTSC)
+                                id &= ~curr_id;
                 }
-                if (i<=index)
+                if (i <= index)
                         return -EINVAL;
 
-                v4l2_video_std_construct(p, curr_id,v4l2_norm_to_name(curr_id));
+                v4l2_video_std_construct(p, curr_id, descr);
                 p->index = index;
 
-                dbgarg (cmd, "index=%d, id=%Ld, name=%s, fps=%d/%d, "
+                dbgarg(cmd, "index=%d, id=%Ld, name=%s, fps=%d/%d, "
                                 "framelines=%d\n", p->index,
                                 (unsigned long long)p->id, p->name,
                                 p->frameperiod.numerator,
                                 p->frameperiod.denominator,
                                 p->framelines);
 
-                ret=0;
+                ret = 0;
                 break;
         }
         case VIDIOC_G_STD:
diff --git a/drivers/media/video/vivi.c b/drivers/media/video/vivi.c
index 845be1864f68..5ff9a58b6135 100644
--- a/drivers/media/video/vivi.c
+++ b/drivers/media/video/vivi.c
@@ -327,13 +327,14 @@ static void vivi_fillbuff(struct vivi_dev *dev, struct vivi_buffer *buf)
         int hmax  = buf->vb.height;
         int wmax  = buf->vb.width;
         struct timeval ts;
-        char *tmpbuf = kmalloc(wmax * 2, GFP_ATOMIC);
+        char *tmpbuf;
         void *vbuf = videobuf_to_vmalloc(&buf->vb);
 
-        if (!tmpbuf)
+        if (!vbuf)
                 return;
 
-        if (!vbuf)
+        tmpbuf = kmalloc(wmax * 2, GFP_ATOMIC);
+        if (!tmpbuf)
                 return;
 
         for (h = 0; h < hmax; h++) {
diff --git a/drivers/mmc/host/pxamci.c b/drivers/mmc/host/pxamci.c
index 65210fca37ed..d89475d36988 100644
--- a/drivers/mmc/host/pxamci.c
+++ b/drivers/mmc/host/pxamci.c
@@ -114,6 +114,7 @@ static void pxamci_setup_data(struct pxamci_host *host, struct mmc_data *data)
         unsigned int nob = data->blocks;
         unsigned long long clks;
         unsigned int timeout;
+        bool dalgn = 0;
         u32 dcmd;
         int i;
 
@@ -152,6 +153,9 @@ static void pxamci_setup_data(struct pxamci_host *host, struct mmc_data *data)
                 host->sg_cpu[i].dcmd = dcmd | length;
                 if (length & 31 && !(data->flags & MMC_DATA_READ))
                         host->sg_cpu[i].dcmd |= DCMD_ENDIRQEN;
+                /* Not aligned to 8-byte boundary? */
+                if (sg_dma_address(&data->sg[i]) & 0x7)
+                        dalgn = 1;
                 if (data->flags & MMC_DATA_READ) {
                         host->sg_cpu[i].dsadr = host->res->start + MMC_RXFIFO;
                         host->sg_cpu[i].dtadr = sg_dma_address(&data->sg[i]);
@@ -165,6 +169,15 @@ static void pxamci_setup_data(struct pxamci_host *host, struct mmc_data *data)
         host->sg_cpu[host->dma_len - 1].ddadr = DDADR_STOP;
         wmb();
 
+        /*
+         * The PXA27x DMA controller encounters overhead when working with
+         * unaligned (to 8-byte boundaries) data, so switch on byte alignment
+         * mode only if we have unaligned data.
+         */
+        if (dalgn)
+                DALGN |= (1 << host->dma);
+        else
+                DALGN &= (1 << host->dma);
         DDADR(host->dma) = host->sg_dma;
         DCSR(host->dma) = DCSR_RUN;
 }
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 07c2048b230b..b413aa6c246b 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -55,6 +55,10 @@ static unsigned int debug_quirks = 0;
 #define SDHCI_QUIRK_32BIT_DMA_SIZE                      (1<<7)
 /* Controller needs to be reset after each request to stay stable */
 #define SDHCI_QUIRK_RESET_AFTER_REQUEST                 (1<<8)
+/* Controller needs voltage and power writes to happen separately */
+#define SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER             (1<<9)
+/* Controller has an off-by-one issue with timeout value */
+#define SDHCI_QUIRK_INCR_TIMEOUT_CONTROL                (1<<10)
 
 static const struct pci_device_id pci_ids[] __devinitdata = {
         {
@@ -115,7 +119,8 @@ static const struct pci_device_id pci_ids[] __devinitdata = {
                 .subvendor      = PCI_ANY_ID,
                 .subdevice      = PCI_ANY_ID,
                 .driver_data    = SDHCI_QUIRK_SINGLE_POWER_WRITE |
-                                  SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS,
+                                  SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS |
+                                  SDHCI_QUIRK_BROKEN_DMA,
         },
 
         {
@@ -124,7 +129,17 @@ static const struct pci_device_id pci_ids[] __devinitdata = {
                 .subvendor      = PCI_ANY_ID,
                 .subdevice      = PCI_ANY_ID,
                 .driver_data    = SDHCI_QUIRK_SINGLE_POWER_WRITE |
-                                  SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS,
+                                  SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS |
+                                  SDHCI_QUIRK_BROKEN_DMA,
+        },
+
+        {
+                .vendor         = PCI_VENDOR_ID_MARVELL,
+                .device         = PCI_DEVICE_ID_MARVELL_CAFE_SD,
+                .subvendor      = PCI_ANY_ID,
+                .subdevice      = PCI_ANY_ID,
+                .driver_data    = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER |
+                                  SDHCI_QUIRK_INCR_TIMEOUT_CONTROL,
         },
 
         {
@@ -469,6 +484,13 @@ static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_data *data)
                         break;
         }
 
+        /*
+         * Compensate for an off-by-one error in the CaFe hardware; otherwise,
+         * a too-small count gives us interrupt timeouts.
+         */
+        if ((host->chip->quirks & SDHCI_QUIRK_INCR_TIMEOUT_CONTROL))
+                count++;
+
         if (count >= 0xF) {
                 printk(KERN_WARNING "%s: Too large timeout requested!\n",
                         mmc_hostname(host->mmc));
@@ -774,6 +796,14 @@ static void sdhci_set_power(struct sdhci_host *host, unsigned short power)
                 BUG();
         }
 
+        /*
+         * At least the CaFe chip gets confused if we set the voltage
+         * and set turn on power at the same time, so set the voltage first.
+         */
+        if ((host->chip->quirks & SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER))
+                writeb(pwr & ~SDHCI_POWER_ON,
+                                host->ioaddr + SDHCI_POWER_CONTROL);
+
         writeb(pwr, host->ioaddr + SDHCI_POWER_CONTROL);
 
 out:
diff --git a/drivers/net/3c59x.c b/drivers/net/3c59x.c
index 2edda8cc7f99..aabad8ce7458 100644
--- a/drivers/net/3c59x.c
+++ b/drivers/net/3c59x.c
@@ -1768,9 +1768,10 @@ vortex_timer(unsigned long data)
         case XCVR_MII: case XCVR_NWAY:
                 {
                         ok = 1;
-                        spin_lock_bh(&vp->lock);
+                        /* Interrupts are already disabled */
+                        spin_lock(&vp->lock);
                         vortex_check_media(dev, 0);
-                        spin_unlock_bh(&vp->lock);
+                        spin_unlock(&vp->lock);
                 }
                 break;
           default:                                      /* Other media types handled by Tx timeouts. */
diff --git a/drivers/net/e100.c b/drivers/net/e100.c
index f3cba5e24ec5..1037b1332312 100644
--- a/drivers/net/e100.c
+++ b/drivers/net/e100.c
@@ -1803,6 +1803,8 @@ static int e100_rx_alloc_skb(struct nic *nic, struct rx *rx)
         if (rx->prev->skb) {
                 struct rfd *prev_rfd = (struct rfd *)rx->prev->skb->data;
                 put_unaligned_le32(rx->dma_addr, &prev_rfd->link);
+                pci_dma_sync_single_for_device(nic->pdev, rx->prev->dma_addr,
+                        sizeof(struct rfd), PCI_DMA_TODEVICE);
         }
 
         return 0;
diff --git a/drivers/net/e1000/e1000_ethtool.c b/drivers/net/e1000/e1000_ethtool.c
index 701531e72e7b..a3f6a9c72ec8 100644
--- a/drivers/net/e1000/e1000_ethtool.c
+++ b/drivers/net/e1000/e1000_ethtool.c
@@ -347,7 +347,7 @@ e1000_set_tso(struct net_device *netdev, u32 data)
         else
                 netdev->features &= ~NETIF_F_TSO;
 
-        if (data)
+        if (data && (adapter->hw.mac_type > e1000_82547_rev_2))
                 netdev->features |= NETIF_F_TSO6;
         else
                 netdev->features &= ~NETIF_F_TSO6;
diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c
index cab1835173cd..648a87bbf467 100644
--- a/drivers/net/e1000e/netdev.c
+++ b/drivers/net/e1000e/netdev.c
@@ -2535,7 +2535,8 @@ void e1000e_down(struct e1000_adapter *adapter)
         adapter->link_speed = 0;
         adapter->link_duplex = 0;
 
-        e1000e_reset(adapter);
+        if (!pci_channel_offline(adapter->pdev))
+                e1000e_reset(adapter);
         e1000_clean_tx_ring(adapter);
         e1000_clean_rx_ring(adapter);
 
diff --git a/drivers/net/hamradio/dmascc.c b/drivers/net/hamradio/dmascc.c
index 0b94833e23f7..e8cfadefa4b6 100644
--- a/drivers/net/hamradio/dmascc.c
+++ b/drivers/net/hamradio/dmascc.c
@@ -1077,8 +1077,6 @@ static inline void rx_off(struct scc_priv *priv)
 
 static void start_timer(struct scc_priv *priv, int t, int r15)
 {
-        unsigned long flags;
-
         outb(priv->tmr_mode, priv->tmr_ctrl);
         if (t == 0) {
                 tm_isr(priv);
diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c
index ae398f04c7b4..e79a26a886c8 100644
--- a/drivers/net/igb/igb_main.c
+++ b/drivers/net/igb/igb_main.c
@@ -718,7 +718,8 @@ void igb_down(struct igb_adapter *adapter)
         adapter->link_speed = 0;
         adapter->link_duplex = 0;
 
-        igb_reset(adapter);
+        if (!pci_channel_offline(adapter->pdev))
+                igb_reset(adapter);
         igb_clean_all_tx_rings(adapter);
         igb_clean_all_rx_rings(adapter);
 }
diff --git a/drivers/net/ipg.c b/drivers/net/ipg.c
index 679a0826780e..2c03f4e2ccc4 100644
--- a/drivers/net/ipg.c
+++ b/drivers/net/ipg.c
@@ -1271,7 +1271,7 @@ static void ipg_nic_rx_with_end(struct net_device *dev,
 
                         framelen = le64_to_cpu(rxfd->rfs) & IPG_RFS_RXFRAMELEN;
 
-                        endframeLen = framelen - jumbo->current_size;
+                        endframelen = framelen - jumbo->current_size;
                         /*
                         if (framelen > IPG_RXFRAG_SIZE)
                                 framelen=IPG_RXFRAG_SIZE;
@@ -1279,8 +1279,8 @@ static void ipg_nic_rx_with_end(struct net_device *dev,
                         if (framelen > IPG_RXSUPPORT_SIZE)
                                 dev_kfree_skb_irq(jumbo->skb);
                         else {
-                                memcpy(skb_put(jumbo->skb, endframeLen),
-                                       skb->data, endframeLen);
+                                memcpy(skb_put(jumbo->skb, endframelen),
+                                       skb->data, endframelen);
 
                                 jumbo->skb->protocol =
                                     eth_type_trans(jumbo->skb, dev);
@@ -1352,16 +1352,16 @@ static int ipg_nic_rx(struct net_device *dev)
 
                 switch (ipg_nic_rx_check_frame_type(dev)) {
                 case FRAME_WITH_START_WITH_END:
-                        ipg_nic_rx_with_start_and_end(dev, tp, rxfd, entry);
+                        ipg_nic_rx_with_start_and_end(dev, sp, rxfd, entry);
                         break;
                 case FRAME_WITH_START:
-                        ipg_nic_rx_with_start(dev, tp, rxfd, entry);
+                        ipg_nic_rx_with_start(dev, sp, rxfd, entry);
                         break;
                 case FRAME_WITH_END:
-                        ipg_nic_rx_with_end(dev, tp, rxfd, entry);
+                        ipg_nic_rx_with_end(dev, sp, rxfd, entry);
                         break;
                 case FRAME_NO_START_NO_END:
-                        ipg_nic_rx_no_start_no_end(dev, tp, rxfd, entry);
+                        ipg_nic_rx_no_start_no_end(dev, sp, rxfd, entry);
                         break;
                 }
         }
@@ -1808,7 +1808,7 @@ static int ipg_nic_open(struct net_device *dev)
         /* initialize JUMBO Frame control variable */
         sp->jumbo.found_start = 0;
         sp->jumbo.current_size = 0;
-        sp->jumbo.skb = 0;
+        sp->jumbo.skb = NULL;
         dev->mtu = IPG_TXFRAG_SIZE;
 #endif
 
diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index 7b859220c255..8f0460901153 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -1969,7 +1969,8 @@ void ixgbe_down(struct ixgbe_adapter *adapter)
         netif_carrier_off(netdev);
         netif_stop_queue(netdev);
 
-        ixgbe_reset(adapter);
+        if (!pci_channel_offline(adapter->pdev))
+                ixgbe_reset(adapter);
         ixgbe_clean_all_tx_rings(adapter);
         ixgbe_clean_all_rx_rings(adapter);
 
diff --git a/drivers/net/netxen/netxen_nic_main.c b/drivers/net/netxen/netxen_nic_main.c
index 6797ed069f1f..63cd67b931e7 100644
--- a/drivers/net/netxen/netxen_nic_main.c
+++ b/drivers/net/netxen/netxen_nic_main.c
@@ -71,14 +71,18 @@ static irqreturn_t netxen_intr(int irq, void *data);
 static irqreturn_t netxen_msi_intr(int irq, void *data);
 
 /*  PCI Device ID Table  */
+#define ENTRY(device) \
+        {PCI_DEVICE(0x4040, (device)), \
+        .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
+
 static struct pci_device_id netxen_pci_tbl[] __devinitdata = {
-        {PCI_DEVICE(0x4040, 0x0001), PCI_DEVICE_CLASS(0x020000, ~0)},
-        {PCI_DEVICE(0x4040, 0x0002), PCI_DEVICE_CLASS(0x020000, ~0)},
-        {PCI_DEVICE(0x4040, 0x0003), PCI_DEVICE_CLASS(0x020000, ~0)},
-        {PCI_DEVICE(0x4040, 0x0004), PCI_DEVICE_CLASS(0x020000, ~0)},
-        {PCI_DEVICE(0x4040, 0x0005), PCI_DEVICE_CLASS(0x020000, ~0)},
-        {PCI_DEVICE(0x4040, 0x0024), PCI_DEVICE_CLASS(0x020000, ~0)},
-        {PCI_DEVICE(0x4040, 0x0025), PCI_DEVICE_CLASS(0x020000, ~0)},
+        ENTRY(0x0001),
+        ENTRY(0x0002),
+        ENTRY(0x0003),
+        ENTRY(0x0004),
+        ENTRY(0x0005),
+        ENTRY(0x0024),
+        ENTRY(0x0025),
         {0,}
 };
 
diff --git a/drivers/net/pcmcia/axnet_cs.c b/drivers/net/pcmcia/axnet_cs.c
index ce95c5d168fe..70d012e90dcf 100644
--- a/drivers/net/pcmcia/axnet_cs.c
+++ b/drivers/net/pcmcia/axnet_cs.c
@@ -525,12 +525,14 @@ static int axnet_open(struct net_device *dev)
     int ret;
     axnet_dev_t *info = PRIV(dev);
     struct pcmcia_device *link = info->p_dev;
+    unsigned int nic_base = dev->base_addr;
     
     DEBUG(2, "axnet_open('%s')\n", dev->name);
 
     if (!pcmcia_dev_present(link))
         return -ENODEV;
 
+    outb_p(0xFF, nic_base + EN0_ISR); /* Clear bogus intr. */
     ret = request_irq(dev->irq, ei_irq_wrapper, IRQF_SHARED, "axnet_cs", dev);
     if (ret)
             return ret;
diff --git a/drivers/net/pcmcia/pcnet_cs.c b/drivers/net/pcmcia/pcnet_cs.c
index fd8158a86f64..2d4c4ad89b8d 100644
--- a/drivers/net/pcmcia/pcnet_cs.c
+++ b/drivers/net/pcmcia/pcnet_cs.c
@@ -969,6 +969,7 @@ static int pcnet_open(struct net_device *dev)
     int ret;
     pcnet_dev_t *info = PRIV(dev);
     struct pcmcia_device *link = info->p_dev;
+    unsigned int nic_base = dev->base_addr;
 
     DEBUG(2, "pcnet_open('%s')\n", dev->name);
 
@@ -976,6 +977,8 @@ static int pcnet_open(struct net_device *dev)
         return -ENODEV;
 
     set_misc_reg(dev);
+
+    outb_p(0xFF, nic_base + EN0_ISR); /* Clear bogus intr. */
     ret = request_irq(dev->irq, ei_irq_wrapper, IRQF_SHARED, dev_info, dev);
     if (ret)
             return ret;
diff --git a/drivers/net/qla3xxx.c b/drivers/net/qla3xxx.c
index b7f7b2227d56..bccee68bd48a 100644
--- a/drivers/net/qla3xxx.c
+++ b/drivers/net/qla3xxx.c
@@ -3701,7 +3701,9 @@ static int ql_cycle_adapter(struct ql3_adapter *qdev, int reset)
                 printk(KERN_ERR PFX
                                 "%s: Driver up/down cycle failed, "
                                 "closing device\n",qdev->ndev->name);
+                rtnl_lock();
                 dev_close(qdev->ndev);
+                rtnl_unlock();
                 return -1;
         }
         return 0;
diff --git a/drivers/net/r6040.c b/drivers/net/r6040.c
index 858b191517b3..504a48ff73c8 100644
--- a/drivers/net/r6040.c
+++ b/drivers/net/r6040.c
@@ -273,7 +273,7 @@ static void r6040_init_ring_desc(struct r6040_descriptor *desc_ring,
         dma_addr_t mapping = desc_dma;
 
         while (size-- > 0) {
-                mapping += sizeof(sizeof(*desc));
+                mapping += sizeof(*desc);
                 desc->ndesc = cpu_to_le32(mapping);
                 desc->vndescp = desc + 1;
                 desc++;
diff --git a/drivers/net/s2io.c b/drivers/net/s2io.c
index b5c1e663417d..ae7b697456b4 100644
--- a/drivers/net/s2io.c
+++ b/drivers/net/s2io.c
@@ -2625,9 +2625,7 @@ static int fill_rx_buffers(struct ring_info *ring)
                         rxdp1->Buffer0_ptr = pci_map_single
                             (ring->pdev, skb->data, size - NET_IP_ALIGN,
                                 PCI_DMA_FROMDEVICE);
-                        if( (rxdp1->Buffer0_ptr == 0) ||
-                                (rxdp1->Buffer0_ptr ==
-                                DMA_ERROR_CODE))
+                        if(pci_dma_mapping_error(rxdp1->Buffer0_ptr))
                                 goto pci_map_failed;
 
                         rxdp->Control_2 =
@@ -2657,6 +2655,7 @@ static int fill_rx_buffers(struct ring_info *ring)
                         skb->data = (void *) (unsigned long)tmp;
                         skb_reset_tail_pointer(skb);
 
+                        /* AK: check is wrong. 0 can be valid dma address */
                         if (!(rxdp3->Buffer0_ptr))
                                 rxdp3->Buffer0_ptr =
                                    pci_map_single(ring->pdev, ba->ba_0,
@@ -2665,8 +2664,7 @@ static int fill_rx_buffers(struct ring_info *ring)
                                 pci_dma_sync_single_for_device(ring->pdev,
                                 (dma_addr_t) rxdp3->Buffer0_ptr,
                                     BUF0_LEN, PCI_DMA_FROMDEVICE);
-                        if( (rxdp3->Buffer0_ptr == 0) ||
-                                (rxdp3->Buffer0_ptr == DMA_ERROR_CODE))
+                        if (pci_dma_mapping_error(rxdp3->Buffer0_ptr))
                                 goto pci_map_failed;
 
                         rxdp->Control_2 = SET_BUFFER0_SIZE_3(BUF0_LEN);
@@ -2681,18 +2679,17 @@ static int fill_rx_buffers(struct ring_info *ring)
                                 (ring->pdev, skb->data, ring->mtu + 4,
                                                 PCI_DMA_FROMDEVICE);
 
-                                if( (rxdp3->Buffer2_ptr == 0) ||
-                                        (rxdp3->Buffer2_ptr == DMA_ERROR_CODE))
+                                if (pci_dma_mapping_error(rxdp3->Buffer2_ptr))
                                         goto pci_map_failed;
 
+                                /* AK: check is wrong */
                                 if (!rxdp3->Buffer1_ptr)
                                         rxdp3->Buffer1_ptr =
                                                 pci_map_single(ring->pdev,
                                                 ba->ba_1, BUF1_LEN,
                                                 PCI_DMA_FROMDEVICE);
 
-                                if( (rxdp3->Buffer1_ptr == 0) ||
-                                        (rxdp3->Buffer1_ptr == DMA_ERROR_CODE)) {
+                                if (pci_dma_mapping_error(rxdp3->Buffer1_ptr)) {
                                         pci_unmap_single
                                                 (ring->pdev,
                                                 (dma_addr_t)(unsigned long)
@@ -4264,16 +4261,14 @@ static int s2io_xmit(struct sk_buff *skb, struct net_device *dev)
                 txdp->Buffer_Pointer = pci_map_single(sp->pdev,
                                         fifo->ufo_in_band_v,
                                         sizeof(u64), PCI_DMA_TODEVICE);
-                if((txdp->Buffer_Pointer == 0) ||
-                        (txdp->Buffer_Pointer == DMA_ERROR_CODE))
+                if (pci_dma_mapping_error(txdp->Buffer_Pointer))
                         goto pci_map_failed;
                 txdp++;
         }
 
         txdp->Buffer_Pointer = pci_map_single
             (sp->pdev, skb->data, frg_len, PCI_DMA_TODEVICE);
-        if((txdp->Buffer_Pointer == 0) ||
-                (txdp->Buffer_Pointer == DMA_ERROR_CODE))
+        if (pci_dma_mapping_error(txdp->Buffer_Pointer))
                 goto pci_map_failed;
 
         txdp->Host_Control = (unsigned long) skb;
@@ -6884,10 +6879,8 @@ static int set_rxd_buffer_pointer(struct s2io_nic *sp, struct RxD_t *rxdp,
                                 pci_map_single( sp->pdev, (*skb)->data,
                                         size - NET_IP_ALIGN,
                                         PCI_DMA_FROMDEVICE);
-                        if( (rxdp1->Buffer0_ptr == 0) ||
-                                (rxdp1->Buffer0_ptr == DMA_ERROR_CODE)) {
+                        if (pci_dma_mapping_error(rxdp1->Buffer0_ptr))
                                 goto memalloc_failed;
-                        }
                         rxdp->Host_Control = (unsigned long) (*skb);
                 }
         } else if ((sp->rxd_mode == RXD_MODE_3B) && (rxdp->Host_Control == 0)) {
@@ -6913,15 +6906,12 @@ static int set_rxd_buffer_pointer(struct s2io_nic *sp, struct RxD_t *rxdp,
                                 pci_map_single(sp->pdev, (*skb)->data,
                                                dev->mtu + 4,
                                                PCI_DMA_FROMDEVICE);
-                        if( (rxdp3->Buffer2_ptr == 0) ||
-                                (rxdp3->Buffer2_ptr == DMA_ERROR_CODE)) {
+                        if (pci_dma_mapping_error(rxdp3->Buffer2_ptr))
                                 goto memalloc_failed;
-                        }
                         rxdp3->Buffer0_ptr = *temp0 =
                                 pci_map_single( sp->pdev, ba->ba_0, BUF0_LEN,
                                                 PCI_DMA_FROMDEVICE);
-                        if( (rxdp3->Buffer0_ptr == 0) ||
-                                (rxdp3->Buffer0_ptr == DMA_ERROR_CODE)) {
+                        if (pci_dma_mapping_error(rxdp3->Buffer0_ptr)) {
                                 pci_unmap_single (sp->pdev,
                                         (dma_addr_t)rxdp3->Buffer2_ptr,
                                         dev->mtu + 4, PCI_DMA_FROMDEVICE);
@@ -6933,8 +6923,7 @@ static int set_rxd_buffer_pointer(struct s2io_nic *sp, struct RxD_t *rxdp,
                         rxdp3->Buffer1_ptr = *temp1 =
                                 pci_map_single(sp->pdev, ba->ba_1, BUF1_LEN,
                                                 PCI_DMA_FROMDEVICE);
-                        if( (rxdp3->Buffer1_ptr == 0) ||
-                                (rxdp3->Buffer1_ptr == DMA_ERROR_CODE)) {
+                        if (pci_dma_mapping_error(rxdp3->Buffer1_ptr)) {
                                 pci_unmap_single (sp->pdev,
                                         (dma_addr_t)rxdp3->Buffer0_ptr,
                                         BUF0_LEN, PCI_DMA_FROMDEVICE);
diff --git a/drivers/net/s2io.h b/drivers/net/s2io.h
index 4706f7f9acb6..1827b6686c98 100644
--- a/drivers/net/s2io.h
+++ b/drivers/net/s2io.h
@@ -75,10 +75,6 @@ static int debug_level = ERR_DBG;
 /* DEBUG message print. */
 #define DBG_PRINT(dbg_level, args...)  if(!(debug_level<dbg_level)) printk(args)
 
-#ifndef DMA_ERROR_CODE
-#define DMA_ERROR_CODE          (~(dma_addr_t)0x0)
-#endif
-
 /* Protocol assist features of the NIC */
 #define L3_CKSUM_OK 0xFFFF
 #define L4_CKSUM_OK 0xFFFF
diff --git a/drivers/net/tc35815.c b/drivers/net/tc35815.c
index 10e4e85da3fc..b07b8cbadeaf 100644
--- a/drivers/net/tc35815.c
+++ b/drivers/net/tc35815.c
@@ -1394,6 +1394,7 @@ tc35815_open(struct net_device *dev)
         tc35815_chip_init(dev);
         spin_unlock_irq(&lp->lock);
 
+        netif_carrier_off(dev);
         /* schedule a link state check */
         phy_start(lp->phy_dev);
 
@@ -1735,7 +1736,6 @@ tc35815_rx(struct net_device *dev)
                         skb = lp->rx_skbs[cur_bd].skb;
                         prefetch(skb->data);
                         lp->rx_skbs[cur_bd].skb = NULL;
-                        lp->fbl_count--;
                         pci_unmap_single(lp->pci_dev,
                                          lp->rx_skbs[cur_bd].skb_dma,
                                          RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
@@ -1791,6 +1791,7 @@ tc35815_rx(struct net_device *dev)
 #ifdef TC35815_USE_PACKEDBUFFER
                         while (lp->fbl_curid != id)
 #else
+                        lp->fbl_count--;
                         while (lp->fbl_count < RX_BUF_NUM)
 #endif
                         {
@@ -2453,6 +2454,7 @@ static int tc35815_resume(struct pci_dev *pdev)
                 return 0;
         pci_set_power_state(pdev, PCI_D0);
         tc35815_restart(dev);
+        netif_carrier_off(dev);
         if (lp->phy_dev)
                 phy_start(lp->phy_dev);
         netif_device_attach(dev);
diff --git a/drivers/net/wan/x25_asy.c b/drivers/net/wan/x25_asy.c
index 249e18053d5f..069f8bb0a99f 100644
--- a/drivers/net/wan/x25_asy.c
+++ b/drivers/net/wan/x25_asy.c
@@ -32,6 +32,7 @@
 #include <linux/x25.h>
 #include <linux/lapb.h>
 #include <linux/init.h>
+#include <linux/rtnetlink.h>
 #include "x25_asy.h"
 
 #include <net/x25device.h>
@@ -601,8 +602,10 @@ static void x25_asy_close_tty(struct tty_struct *tty)
         if (!sl || sl->magic != X25_ASY_MAGIC)
                 return;
 
+        rtnl_lock();
         if (sl->dev->flags & IFF_UP)
                 dev_close(sl->dev);
+        rtnl_unlock();
 
         tty->disc_data = NULL;
         sl->tty = NULL;
diff --git a/drivers/net/wireless/b43/leds.c b/drivers/net/wireless/b43/leds.c
index 36a9c42df835..76f4c7bad8b8 100644
--- a/drivers/net/wireless/b43/leds.c
+++ b/drivers/net/wireless/b43/leds.c
@@ -72,6 +72,9 @@ static void b43_led_brightness_set(struct led_classdev *led_dev,
         struct b43_wldev *dev = led->dev;
         bool radio_enabled;
 
+        if (unlikely(b43_status(dev) < B43_STAT_INITIALIZED))
+                return;
+
         /* Checking the radio-enabled status here is slightly racy,
          * but we want to avoid the locking overhead and we don't care
          * whether the LED has the wrong state for a second. */
diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c
index fa4b0d8b74a2..a70827793086 100644
--- a/drivers/net/wireless/b43/main.c
+++ b/drivers/net/wireless/b43/main.c
@@ -2883,12 +2883,11 @@ static int b43_op_tx(struct ieee80211_hw *hw,
 
         if (unlikely(skb->len < 2 + 2 + 6)) {
                 /* Too short, this can't be a valid frame. */
-                dev_kfree_skb_any(skb);
-                return NETDEV_TX_OK;
+                goto drop_packet;
         }
         B43_WARN_ON(skb_shinfo(skb)->nr_frags);
         if (unlikely(!dev))
-                return NETDEV_TX_BUSY;
+                goto drop_packet;
 
         /* Transmissions on seperate queues can run concurrently. */
         read_lock_irqsave(&wl->tx_lock, flags);
@@ -2904,7 +2903,12 @@ static int b43_op_tx(struct ieee80211_hw *hw,
         read_unlock_irqrestore(&wl->tx_lock, flags);
 
         if (unlikely(err))
-                return NETDEV_TX_BUSY;
+                goto drop_packet;
+        return NETDEV_TX_OK;
+
+drop_packet:
+        /* We can not transmit this packet. Drop it. */
+        dev_kfree_skb_any(skb);
         return NETDEV_TX_OK;
 }
 
diff --git a/drivers/net/wireless/b43legacy/dma.c b/drivers/net/wireless/b43legacy/dma.c
index c990f87b107a..93ddc1cbcc8b 100644
--- a/drivers/net/wireless/b43legacy/dma.c
+++ b/drivers/net/wireless/b43legacy/dma.c
@@ -876,6 +876,7 @@ struct b43legacy_dmaring *b43legacy_setup_dmaring(struct b43legacy_wldev *dev,
         if (!ring)
                 goto out;
         ring->type = type;
+        ring->dev = dev;
 
         nr_slots = B43legacy_RXRING_SLOTS;
         if (for_tx)
@@ -922,7 +923,6 @@ struct b43legacy_dmaring *b43legacy_setup_dmaring(struct b43legacy_wldev *dev,
                                  DMA_TO_DEVICE);
         }
 
-        ring->dev = dev;
         ring->nr_slots = nr_slots;
         ring->mmio_base = b43legacy_dmacontroller_base(type, controller_index);
         ring->index = controller_index;
diff --git a/drivers/net/wireless/b43legacy/main.c b/drivers/net/wireless/b43legacy/main.c
index 204077c13870..3e612d0a13e8 100644
--- a/drivers/net/wireless/b43legacy/main.c
+++ b/drivers/net/wireless/b43legacy/main.c
@@ -2378,8 +2378,10 @@ static int b43legacy_op_tx(struct ieee80211_hw *hw,
         } else
                 err = b43legacy_dma_tx(dev, skb, ctl);
 out:
-        if (unlikely(err))
-                return NETDEV_TX_BUSY;
+        if (unlikely(err)) {
+                /* Drop the packet. */
+                dev_kfree_skb_any(skb);
+        }
         return NETDEV_TX_OK;
 }
 
diff --git a/drivers/net/wireless/hostap/hostap_80211_rx.c b/drivers/net/wireless/hostap/hostap_80211_rx.c
index 4fd73809602e..020f450e9dba 100644
--- a/drivers/net/wireless/hostap/hostap_80211_rx.c
+++ b/drivers/net/wireless/hostap/hostap_80211_rx.c
@@ -64,7 +64,7 @@ int prism2_rx_80211(struct net_device *dev, struct sk_buff *skb,
         int hdrlen, phdrlen, head_need, tail_need;
         u16 fc;
         int prism_header, ret;
-        struct ieee80211_hdr_4addr *hdr;
+        struct ieee80211_hdr_4addr *fhdr;
 
         iface = netdev_priv(dev);
         local = iface->local;
@@ -83,8 +83,8 @@ int prism2_rx_80211(struct net_device *dev, struct sk_buff *skb,
                 phdrlen = 0;
         }
 
-        hdr = (struct ieee80211_hdr_4addr *) skb->data;
-        fc = le16_to_cpu(hdr->frame_ctl);
+        fhdr = (struct ieee80211_hdr_4addr *) skb->data;
+        fc = le16_to_cpu(fhdr->frame_ctl);
 
         if (type == PRISM2_RX_MGMT && (fc & IEEE80211_FCTL_VERS)) {
                 printk(KERN_DEBUG "%s: dropped management frame with header "
@@ -551,7 +551,7 @@ hostap_rx_frame_wds(local_info_t *local, struct ieee80211_hdr_4addr *hdr,
              hdr->addr1[2] != 0xff || hdr->addr1[3] != 0xff ||
              hdr->addr1[4] != 0xff || hdr->addr1[5] != 0xff)) {
                 /* RA (or BSSID) is not ours - drop */
-                PDEBUG(DEBUG_EXTRA, "%s: received WDS frame with "
+                PDEBUG(DEBUG_EXTRA2, "%s: received WDS frame with "
                        "not own or broadcast %s=%s\n",
                        local->dev->name,
                        fc & IEEE80211_FCTL_FROMDS ? "RA" : "BSSID",
diff --git a/drivers/net/wireless/hostap/hostap_ap.c b/drivers/net/wireless/hostap/hostap_ap.c
index 0acd9589c48c..ab981afd481d 100644
--- a/drivers/net/wireless/hostap/hostap_ap.c
+++ b/drivers/net/wireless/hostap/hostap_ap.c
@@ -1930,7 +1930,7 @@ static void handle_pspoll(local_info_t *local,
                 PDEBUG(DEBUG_PS, "   PSPOLL and AID[15:14] not set\n");
                 return;
         }
-        aid &= ~BIT(15) & ~BIT(14);
+        aid &= ~(BIT(15) | BIT(14));
         if (aid == 0 || aid > MAX_AID_TABLE_SIZE) {
                 PDEBUG(DEBUG_PS, "   invalid aid=%d\n", aid);
                 return;
diff --git a/drivers/net/wireless/hostap/hostap_cs.c b/drivers/net/wireless/hostap/hostap_cs.c
index ed4317a17cbb..80039a0ae027 100644
--- a/drivers/net/wireless/hostap/hostap_cs.c
+++ b/drivers/net/wireless/hostap/hostap_cs.c
@@ -533,10 +533,10 @@ static void prism2_detach(struct pcmcia_device *link)
 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
 
 #define CFG_CHECK2(fn, retf) \
-do { int ret = (retf); \
-if (ret != 0) { \
-        PDEBUG(DEBUG_EXTRA, "CardServices(" #fn ") returned %d\n", ret); \
-        cs_error(link, fn, ret); \
+do { int _ret = (retf); \
+if (_ret != 0) { \
+        PDEBUG(DEBUG_EXTRA, "CardServices(" #fn ") returned %d\n", _ret); \
+        cs_error(link, fn, _ret); \
         goto next_entry; \
 } \
 } while (0)
diff --git a/drivers/net/wireless/hostap/hostap_hw.c b/drivers/net/wireless/hostap/hostap_hw.c
index cdf90c40f11b..936f52e3d95c 100644
--- a/drivers/net/wireless/hostap/hostap_hw.c
+++ b/drivers/net/wireless/hostap/hostap_hw.c
@@ -2835,7 +2835,7 @@ static void hostap_passive_scan(unsigned long data)
 {
         local_info_t *local = (local_info_t *) data;
         struct net_device *dev = local->dev;
-        u16 channel;
+        u16 chan;
 
         if (local->passive_scan_interval <= 0)
                 return;
@@ -2872,11 +2872,11 @@ static void hostap_passive_scan(unsigned long data)
 
                 printk(KERN_DEBUG "%s: passive scan channel %d\n",
                        dev->name, local->passive_scan_channel);
-                channel = local->passive_scan_channel;
+                chan = local->passive_scan_channel;
                 local->passive_scan_state = PASSIVE_SCAN_WAIT;
                 local->passive_scan_timer.expires = jiffies + HZ / 10;
         } else {
-                channel = local->channel;
+                chan = local->channel;
                 local->passive_scan_state = PASSIVE_SCAN_LISTEN;
                 local->passive_scan_timer.expires = jiffies +
                         local->passive_scan_interval * HZ;
@@ -2884,9 +2884,9 @@ static void hostap_passive_scan(unsigned long data)
 
         if (hfa384x_cmd_callback(dev, HFA384X_CMDCODE_TEST |
                                  (HFA384X_TEST_CHANGE_CHANNEL << 8),
-                                 channel, NULL, 0))
+                                 chan, NULL, 0))
                 printk(KERN_ERR "%s: passive scan channel set %d "
-                       "failed\n", dev->name, channel);
+                       "failed\n", dev->name, chan);
 
         add_timer(&local->passive_scan_timer);
 }
diff --git a/drivers/net/wireless/hostap/hostap_main.c b/drivers/net/wireless/hostap/hostap_main.c
index f7aec9309d04..a38e85f334df 100644
--- a/drivers/net/wireless/hostap/hostap_main.c
+++ b/drivers/net/wireless/hostap/hostap_main.c
@@ -594,7 +594,8 @@ void hostap_dump_tx_header(const char *name, const struct hfa384x_tx_frame *tx)
 }
 
 
-int hostap_80211_header_parse(const struct sk_buff *skb, unsigned char *haddr)
+static int hostap_80211_header_parse(const struct sk_buff *skb,
+                                     unsigned char *haddr)
 {
         struct hostap_interface *iface = netdev_priv(skb->dev);
         local_info_t *local = iface->local;
@@ -857,7 +858,6 @@ const struct header_ops hostap_80211_ops = {
         .rebuild        = eth_rebuild_header,
         .cache          = eth_header_cache,
         .cache_update   = eth_header_cache_update,
-
         .parse          = hostap_80211_header_parse,
 };
 EXPORT_SYMBOL(hostap_80211_ops);
@@ -1150,7 +1150,6 @@ EXPORT_SYMBOL(hostap_set_roaming);
 EXPORT_SYMBOL(hostap_set_auth_algs);
 EXPORT_SYMBOL(hostap_dump_rx_header);
 EXPORT_SYMBOL(hostap_dump_tx_header);
-EXPORT_SYMBOL(hostap_80211_header_parse);
 EXPORT_SYMBOL(hostap_80211_get_hdrlen);
 EXPORT_SYMBOL(hostap_get_stats);
 EXPORT_SYMBOL(hostap_setup_dev);
diff --git a/drivers/net/wireless/iwlwifi/iwl3945-base.c b/drivers/net/wireless/iwlwifi/iwl3945-base.c
index 13925b627e3b..b1b3c523185d 100644
--- a/drivers/net/wireless/iwlwifi/iwl3945-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl3945-base.c
@@ -2227,7 +2227,10 @@ static int iwl3945_scan_initiate(struct iwl3945_priv *priv)
         }
 
         IWL_DEBUG_INFO("Starting scan...\n");
-        priv->scan_bands = 2;
+        if (priv->cfg->sku & IWL_SKU_G)
+                priv->scan_bands |= BIT(IEEE80211_BAND_2GHZ);
+        if (priv->cfg->sku & IWL_SKU_A)
+                priv->scan_bands |= BIT(IEEE80211_BAND_5GHZ);
         set_bit(STATUS_SCANNING, &priv->status);
         priv->scan_start = jiffies;
         priv->scan_pass_start = priv->scan_start;
@@ -3352,13 +3355,18 @@ static void iwl3945_rx_scan_complete_notif(struct iwl3945_priv *priv,
         cancel_delayed_work(&priv->scan_check);
 
         IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
-                       (priv->scan_bands == 2) ? "2.4" : "5.2",
+                       (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) ?
+                                                        "2.4" : "5.2",
                        jiffies_to_msecs(elapsed_jiffies
                                         (priv->scan_pass_start, jiffies)));
 
-        /* Remove this scanned band from the list
-         * of pending bands to scan */
-        priv->scan_bands--;
+        /* Remove this scanned band from the list of pending
+         * bands to scan, band G precedes A in order of scanning
+         * as seen in iwl3945_bg_request_scan */
+        if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ))
+                priv->scan_bands &= ~BIT(IEEE80211_BAND_2GHZ);
+        else if (priv->scan_bands &  BIT(IEEE80211_BAND_5GHZ))
+                priv->scan_bands &= ~BIT(IEEE80211_BAND_5GHZ);
 
         /* If a request to abort was given, or the scan did not succeed
          * then we reset the scan state machine and terminate,
@@ -4972,7 +4980,7 @@ static int iwl3945_get_channels_for_scan(struct iwl3945_priv *priv,
 
                 ch_info = iwl3945_get_channel_info(priv, band, scan_ch->channel);
                 if (!is_channel_valid(ch_info)) {
-                        IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
+                        IWL_DEBUG_SCAN("Channel %d is INVALID for this band.\n",
                                        scan_ch->channel);
                         continue;
                 }
@@ -6315,21 +6323,16 @@ static void iwl3945_bg_request_scan(struct work_struct *data)
 
         /* flags + rate selection */
 
-        switch (priv->scan_bands) {
-        case 2:
+        if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
                 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
                 scan->good_CRC_th = 0;
                 band = IEEE80211_BAND_2GHZ;
-                break;
-
-        case 1:
+        } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
                 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
                 scan->good_CRC_th = IWL_GOOD_CRC_TH;
                 band = IEEE80211_BAND_5GHZ;
-                break;
-
-        default:
+        } else {
                 IWL_WARNING("Invalid scan band count\n");
                 goto done;
         }
@@ -6770,7 +6773,7 @@ static int iwl3945_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *co
         ch_info = iwl3945_get_channel_info(priv, conf->channel->band,
                                            conf->channel->hw_value);
         if (!is_channel_valid(ch_info)) {
-                IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this SKU.\n",
+                IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this band.\n",
                                conf->channel->hw_value, conf->channel->band);
                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
                 spin_unlock_irqrestore(&priv->lock, flags);
diff --git a/drivers/net/wireless/iwlwifi/iwl4965-base.c b/drivers/net/wireless/iwlwifi/iwl4965-base.c
index 883b42f7e998..5ed16ce78468 100644
--- a/drivers/net/wireless/iwlwifi/iwl4965-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl4965-base.c
@@ -1774,7 +1774,10 @@ static int iwl4965_scan_initiate(struct iwl_priv *priv)
         }
 
         IWL_DEBUG_INFO("Starting scan...\n");
-        priv->scan_bands = 2;
+        if (priv->cfg->sku & IWL_SKU_G)
+                priv->scan_bands |= BIT(IEEE80211_BAND_2GHZ);
+        if (priv->cfg->sku & IWL_SKU_A)
+                priv->scan_bands |= BIT(IEEE80211_BAND_5GHZ);
         set_bit(STATUS_SCANNING, &priv->status);
         priv->scan_start = jiffies;
         priv->scan_pass_start = priv->scan_start;
@@ -3023,8 +3026,9 @@ static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
 
         IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
         if (index != -1) {
-                int freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
 #ifdef CONFIG_IWL4965_HT
+                int freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
+
                 if (tid != MAX_TID_COUNT)
                         priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
                 if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
@@ -3276,13 +3280,18 @@ static void iwl4965_rx_scan_complete_notif(struct iwl_priv *priv,
         cancel_delayed_work(&priv->scan_check);
 
         IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
-                       (priv->scan_bands == 2) ? "2.4" : "5.2",
+                       (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) ?
+                                                "2.4" : "5.2",
                        jiffies_to_msecs(elapsed_jiffies
                                         (priv->scan_pass_start, jiffies)));
 
-        /* Remove this scanned band from the list
-         * of pending bands to scan */
-        priv->scan_bands--;
+        /* Remove this scanned band from the list of pending
+         * bands to scan, band G precedes A in order of scanning
+         * as seen in iwl_bg_request_scan */
+        if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ))
+                priv->scan_bands &= ~BIT(IEEE80211_BAND_2GHZ);
+        else if (priv->scan_bands &  BIT(IEEE80211_BAND_5GHZ))
+                priv->scan_bands &= ~BIT(IEEE80211_BAND_5GHZ);
 
         /* If a request to abort was given, or the scan did not succeed
          * then we reset the scan state machine and terminate,
@@ -3292,7 +3301,7 @@ static void iwl4965_rx_scan_complete_notif(struct iwl_priv *priv,
                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
         } else {
                 /* If there are more bands on this scan pass reschedule */
-                if (priv->scan_bands > 0)
+                if (priv->scan_bands)
                         goto reschedule;
         }
 
@@ -4635,10 +4644,9 @@ static int iwl4965_get_channels_for_scan(struct iwl_priv *priv,
 
                 scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq);
 
-                ch_info = iwl_get_channel_info(priv, band,
-                                         scan_ch->channel);
+                ch_info = iwl_get_channel_info(priv, band, scan_ch->channel);
                 if (!is_channel_valid(ch_info)) {
-                        IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
+                        IWL_DEBUG_SCAN("Channel %d is INVALID for this band.\n",
                                        scan_ch->channel);
                         continue;
                 }
@@ -5830,8 +5838,7 @@ static void iwl4965_bg_request_scan(struct work_struct *data)
         scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
 
 
-        switch (priv->scan_bands) {
-        case 2:
+        if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
                 scan->tx_cmd.rate_n_flags =
                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
@@ -5839,17 +5846,13 @@ static void iwl4965_bg_request_scan(struct work_struct *data)
 
                 scan->good_CRC_th = 0;
                 band = IEEE80211_BAND_2GHZ;
-                break;
-
-        case 1:
+        } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
                 scan->tx_cmd.rate_n_flags =
                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
                                 RATE_MCS_ANT_B_MSK);
                 scan->good_CRC_th = IWL_GOOD_CRC_TH;
                 band = IEEE80211_BAND_5GHZ;
-                break;
-
-        default:
+        } else {
                 IWL_WARNING("Invalid scan band count\n");
                 goto done;
         }
diff --git a/drivers/net/wireless/prism54/islpci_eth.c b/drivers/net/wireless/prism54/islpci_eth.c
index 762e85bef55d..e43bae97ed8f 100644
--- a/drivers/net/wireless/prism54/islpci_eth.c
+++ b/drivers/net/wireless/prism54/islpci_eth.c
@@ -290,7 +290,7 @@ islpci_monitor_rx(islpci_private *priv, struct sk_buff **skb)
 
                 avs->version = cpu_to_be32(P80211CAPTURE_VERSION);
                 avs->length = cpu_to_be32(sizeof (struct avs_80211_1_header));
-                avs->mactime = cpu_to_be64(le64_to_cpu(clock));
+                avs->mactime = cpu_to_be64(clock);
                 avs->hosttime = cpu_to_be64(jiffies);
                 avs->phytype = cpu_to_be32(6);  /*OFDM: 6 for (g), 8 for (a) */
                 avs->channel = cpu_to_be32(channel_of_freq(freq));
diff --git a/drivers/net/wireless/rt2x00/rt2500usb.c b/drivers/net/wireless/rt2x00/rt2500usb.c
index fdbd0ef2be4b..61e59c17a60a 100644
--- a/drivers/net/wireless/rt2x00/rt2500usb.c
+++ b/drivers/net/wireless/rt2x00/rt2500usb.c
@@ -138,11 +138,8 @@ static void rt2500usb_bbp_write(struct rt2x00_dev *rt2x00dev,
          * Wait until the BBP becomes ready.
          */
         reg = rt2500usb_bbp_check(rt2x00dev);
-        if (rt2x00_get_field16(reg, PHY_CSR8_BUSY)) {
-                ERROR(rt2x00dev, "PHY_CSR8 register busy. Write failed.\n");
-                mutex_unlock(&rt2x00dev->usb_cache_mutex);
-                return;
-        }
+        if (rt2x00_get_field16(reg, PHY_CSR8_BUSY))
+                goto exit_fail;
 
         /*
          * Write the data into the BBP.
@@ -155,6 +152,13 @@ static void rt2500usb_bbp_write(struct rt2x00_dev *rt2x00dev,
         rt2500usb_register_write_lock(rt2x00dev, PHY_CSR7, reg);
 
         mutex_unlock(&rt2x00dev->usb_cache_mutex);
+
+        return;
+
+exit_fail:
+        mutex_unlock(&rt2x00dev->usb_cache_mutex);
+
+        ERROR(rt2x00dev, "PHY_CSR8 register busy. Write failed.\n");
 }
 
 static void rt2500usb_bbp_read(struct rt2x00_dev *rt2x00dev,
@@ -168,10 +172,8 @@ static void rt2500usb_bbp_read(struct rt2x00_dev *rt2x00dev,
          * Wait until the BBP becomes ready.
          */
         reg = rt2500usb_bbp_check(rt2x00dev);
-        if (rt2x00_get_field16(reg, PHY_CSR8_BUSY)) {
-                ERROR(rt2x00dev, "PHY_CSR8 register busy. Read failed.\n");
-                return;
-        }
+        if (rt2x00_get_field16(reg, PHY_CSR8_BUSY))
+                goto exit_fail;
 
         /*
          * Write the request into the BBP.
@@ -186,17 +188,21 @@ static void rt2500usb_bbp_read(struct rt2x00_dev *rt2x00dev,
          * Wait until the BBP becomes ready.
          */
         reg = rt2500usb_bbp_check(rt2x00dev);
-        if (rt2x00_get_field16(reg, PHY_CSR8_BUSY)) {
-                ERROR(rt2x00dev, "PHY_CSR8 register busy. Read failed.\n");
-                *value = 0xff;
-                mutex_unlock(&rt2x00dev->usb_cache_mutex);
-                return;
-        }
+        if (rt2x00_get_field16(reg, PHY_CSR8_BUSY))
+                goto exit_fail;
 
         rt2500usb_register_read_lock(rt2x00dev, PHY_CSR7, &reg);
         *value = rt2x00_get_field16(reg, PHY_CSR7_DATA);
 
         mutex_unlock(&rt2x00dev->usb_cache_mutex);
+
+        return;
+
+exit_fail:
+        mutex_unlock(&rt2x00dev->usb_cache_mutex);
+
+        ERROR(rt2x00dev, "PHY_CSR8 register busy. Read failed.\n");
+        *value = 0xff;
 }
 
 static void rt2500usb_rf_write(struct rt2x00_dev *rt2x00dev,
diff --git a/drivers/net/wireless/rt2x00/rt2x00.h b/drivers/net/wireless/rt2x00/rt2x00.h
index 611d98320593..b4bf1e09cf9a 100644
--- a/drivers/net/wireless/rt2x00/rt2x00.h
+++ b/drivers/net/wireless/rt2x00/rt2x00.h
@@ -821,6 +821,7 @@ struct rt2x00_dev {
         /*
          * Scheduled work.
          */
+        struct workqueue_struct *workqueue;
         struct work_struct intf_work;
         struct work_struct filter_work;
 
diff --git a/drivers/net/wireless/rt2x00/rt2x00dev.c b/drivers/net/wireless/rt2x00/rt2x00dev.c
index 2673d568bcac..c997d4f28ab3 100644
--- a/drivers/net/wireless/rt2x00/rt2x00dev.c
+++ b/drivers/net/wireless/rt2x00/rt2x00dev.c
@@ -75,7 +75,7 @@ static void rt2x00lib_start_link_tuner(struct rt2x00_dev *rt2x00dev)
 
         rt2x00lib_reset_link_tuner(rt2x00dev);
 
-        queue_delayed_work(rt2x00dev->hw->workqueue,
+        queue_delayed_work(rt2x00dev->workqueue,
                            &rt2x00dev->link.work, LINK_TUNE_INTERVAL);
 }
 
@@ -137,14 +137,6 @@ void rt2x00lib_disable_radio(struct rt2x00_dev *rt2x00dev)
                 return;
 
         /*
-         * Stop all scheduled work.
-         */
-        if (work_pending(&rt2x00dev->intf_work))
-                cancel_work_sync(&rt2x00dev->intf_work);
-        if (work_pending(&rt2x00dev->filter_work))
-                cancel_work_sync(&rt2x00dev->filter_work);
-
-        /*
          * Stop the TX queues.
          */
         ieee80211_stop_queues(rt2x00dev->hw);
@@ -398,8 +390,8 @@ static void rt2x00lib_link_tuner(struct work_struct *work)
          * Increase tuner counter, and reschedule the next link tuner run.
          */
         rt2x00dev->link.count++;
-        queue_delayed_work(rt2x00dev->hw->workqueue, &rt2x00dev->link.work,
-                           LINK_TUNE_INTERVAL);
+        queue_delayed_work(rt2x00dev->workqueue,
+                           &rt2x00dev->link.work, LINK_TUNE_INTERVAL);
 }
 
 static void rt2x00lib_packetfilter_scheduled(struct work_struct *work)
@@ -433,6 +425,15 @@ static void rt2x00lib_intf_scheduled_iter(void *data, u8 *mac,
 
         spin_unlock(&intf->lock);
 
+        /*
+         * It is possible the radio was disabled while the work had been
+         * scheduled. If that happens we should return here immediately,
+         * note that in the spinlock protected area above the delayed_flags
+         * have been cleared correctly.
+         */
+        if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags))
+                return;
+
         if (delayed_flags & DELAYED_UPDATE_BEACON) {
                 skb = ieee80211_beacon_get(rt2x00dev->hw, vif, &control);
                 if (skb && rt2x00dev->ops->hw->beacon_update(rt2x00dev->hw,
@@ -441,7 +442,7 @@ static void rt2x00lib_intf_scheduled_iter(void *data, u8 *mac,
         }
 
         if (delayed_flags & DELAYED_CONFIG_ERP)
-                rt2x00lib_config_erp(rt2x00dev, intf, &intf->conf);
+                rt2x00lib_config_erp(rt2x00dev, intf, &conf);
 
         if (delayed_flags & DELAYED_LED_ASSOC)
                 rt2x00leds_led_assoc(rt2x00dev, !!rt2x00dev->intf_associated);
@@ -487,7 +488,7 @@ void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev)
                                                    rt2x00lib_beacondone_iter,
                                                    rt2x00dev);
 
-        queue_work(rt2x00dev->hw->workqueue, &rt2x00dev->intf_work);
+        queue_work(rt2x00dev->workqueue, &rt2x00dev->intf_work);
 }
 EXPORT_SYMBOL_GPL(rt2x00lib_beacondone);
 
@@ -1130,6 +1131,10 @@ int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev)
         /*
          * Initialize configuration work.
          */
+        rt2x00dev->workqueue = create_singlethread_workqueue("rt2x00lib");
+        if (!rt2x00dev->workqueue)
+                goto exit;
+
         INIT_WORK(&rt2x00dev->intf_work, rt2x00lib_intf_scheduled);
         INIT_WORK(&rt2x00dev->filter_work, rt2x00lib_packetfilter_scheduled);
         INIT_DELAYED_WORK(&rt2x00dev->link.work, rt2x00lib_link_tuner);
@@ -1190,6 +1195,13 @@ void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev)
         rt2x00leds_unregister(rt2x00dev);
 
         /*
+         * Stop all queued work. Note that most tasks will already be halted
+         * during rt2x00lib_disable_radio() and rt2x00lib_uninitialize().
+         */
+        flush_workqueue(rt2x00dev->workqueue);
+        destroy_workqueue(rt2x00dev->workqueue);
+
+        /*
          * Free ieee80211_hw memory.
          */
         rt2x00lib_remove_hw(rt2x00dev);
diff --git a/drivers/net/wireless/rt2x00/rt2x00mac.c b/drivers/net/wireless/rt2x00/rt2x00mac.c
index 87e280a21971..9cb023edd2e9 100644
--- a/drivers/net/wireless/rt2x00/rt2x00mac.c
+++ b/drivers/net/wireless/rt2x00/rt2x00mac.c
@@ -428,7 +428,7 @@ void rt2x00mac_configure_filter(struct ieee80211_hw *hw,
         if (!test_bit(DRIVER_REQUIRE_SCHEDULED, &rt2x00dev->flags))
                 rt2x00dev->ops->lib->config_filter(rt2x00dev, *total_flags);
         else
-                queue_work(rt2x00dev->hw->workqueue, &rt2x00dev->filter_work);
+                queue_work(rt2x00dev->workqueue, &rt2x00dev->filter_work);
 }
 EXPORT_SYMBOL_GPL(rt2x00mac_configure_filter);
 
@@ -509,7 +509,7 @@ void rt2x00mac_bss_info_changed(struct ieee80211_hw *hw,
         memcpy(&intf->conf, bss_conf, sizeof(*bss_conf));
         if (delayed) {
                 intf->delayed_flags |= delayed;
-                queue_work(rt2x00dev->hw->workqueue, &rt2x00dev->intf_work);
+                queue_work(rt2x00dev->workqueue, &rt2x00dev->intf_work);
         }
         spin_unlock(&intf->lock);
 }
diff --git a/drivers/net/wireless/rt2x00/rt73usb.c b/drivers/net/wireless/rt2x00/rt73usb.c
index fff8386e816b..83cc0147f698 100644
--- a/drivers/net/wireless/rt2x00/rt73usb.c
+++ b/drivers/net/wireless/rt2x00/rt73usb.c
@@ -134,11 +134,8 @@ static void rt73usb_bbp_write(struct rt2x00_dev *rt2x00dev,
          * Wait until the BBP becomes ready.
          */
         reg = rt73usb_bbp_check(rt2x00dev);
-        if (rt2x00_get_field32(reg, PHY_CSR3_BUSY)) {
-                ERROR(rt2x00dev, "PHY_CSR3 register busy. Write failed.\n");
-                mutex_unlock(&rt2x00dev->usb_cache_mutex);
-                return;
-        }
+        if (rt2x00_get_field32(reg, PHY_CSR3_BUSY))
+                goto exit_fail;
 
         /*
          * Write the data into the BBP.
@@ -151,6 +148,13 @@ static void rt73usb_bbp_write(struct rt2x00_dev *rt2x00dev,
 
         rt73usb_register_write_lock(rt2x00dev, PHY_CSR3, reg);
         mutex_unlock(&rt2x00dev->usb_cache_mutex);
+
+        return;
+
+exit_fail:
+        mutex_unlock(&rt2x00dev->usb_cache_mutex);
+
+        ERROR(rt2x00dev, "PHY_CSR3 register busy. Write failed.\n");
 }
 
 static void rt73usb_bbp_read(struct rt2x00_dev *rt2x00dev,
@@ -164,11 +168,8 @@ static void rt73usb_bbp_read(struct rt2x00_dev *rt2x00dev,
          * Wait until the BBP becomes ready.
          */
         reg = rt73usb_bbp_check(rt2x00dev);
-        if (rt2x00_get_field32(reg, PHY_CSR3_BUSY)) {
-                ERROR(rt2x00dev, "PHY_CSR3 register busy. Read failed.\n");
-                mutex_unlock(&rt2x00dev->usb_cache_mutex);
-                return;
-        }
+        if (rt2x00_get_field32(reg, PHY_CSR3_BUSY))
+                goto exit_fail;
 
         /*
          * Write the request into the BBP.
@@ -184,14 +185,19 @@ static void rt73usb_bbp_read(struct rt2x00_dev *rt2x00dev,
          * Wait until the BBP becomes ready.
          */
         reg = rt73usb_bbp_check(rt2x00dev);
-        if (rt2x00_get_field32(reg, PHY_CSR3_BUSY)) {
-                ERROR(rt2x00dev, "PHY_CSR3 register busy. Read failed.\n");
-                *value = 0xff;
-                return;
-        }
+        if (rt2x00_get_field32(reg, PHY_CSR3_BUSY))
+                goto exit_fail;
 
         *value = rt2x00_get_field32(reg, PHY_CSR3_VALUE);
         mutex_unlock(&rt2x00dev->usb_cache_mutex);
+
+        return;
+
+exit_fail:
+        mutex_unlock(&rt2x00dev->usb_cache_mutex);
+
+        ERROR(rt2x00dev, "PHY_CSR3 register busy. Read failed.\n");
+        *value = 0xff;
 }
 
 static void rt73usb_rf_write(struct rt2x00_dev *rt2x00dev,
diff --git a/drivers/pci/access.c b/drivers/pci/access.c
index ec8f7002b09d..39bb96b413ef 100644
--- a/drivers/pci/access.c
+++ b/drivers/pci/access.c
@@ -178,8 +178,7 @@ static int pci_vpd_pci22_read(struct pci_dev *dev, int pos, int size,
         int ret;
         int begin, end, i;
 
-        if (pos < 0 || pos > PCI_VPD_PCI22_SIZE ||
-            size > PCI_VPD_PCI22_SIZE  - pos)
+        if (pos < 0 || pos > vpd->base.len || size > vpd->base.len  - pos)
                 return -EINVAL;
         if (size == 0)
                 return 0;
@@ -223,8 +222,8 @@ static int pci_vpd_pci22_write(struct pci_dev *dev, int pos, int size,
         u32 val;
         int ret;
 
-        if (pos < 0 || pos > PCI_VPD_PCI22_SIZE || pos & 3 ||
-            size > PCI_VPD_PCI22_SIZE - pos || size < 4)
+        if (pos < 0 || pos > vpd->base.len || pos & 3 ||
+            size > vpd->base.len - pos || size < 4)
                 return -EINVAL;
 
         val = (u8) *buf++;
@@ -255,11 +254,6 @@ out:
         return 4;
 }
 
-static int pci_vpd_pci22_get_size(struct pci_dev *dev)
-{
-        return PCI_VPD_PCI22_SIZE;
-}
-
 static void pci_vpd_pci22_release(struct pci_dev *dev)
 {
         kfree(container_of(dev->vpd, struct pci_vpd_pci22, base));
@@ -268,7 +262,6 @@ static void pci_vpd_pci22_release(struct pci_dev *dev)
 static struct pci_vpd_ops pci_vpd_pci22_ops = {
         .read = pci_vpd_pci22_read,
         .write = pci_vpd_pci22_write,
-        .get_size = pci_vpd_pci22_get_size,
         .release = pci_vpd_pci22_release,
 };
 
@@ -284,6 +277,7 @@ int pci_vpd_pci22_init(struct pci_dev *dev)
         if (!vpd)
                 return -ENOMEM;
 
+        vpd->base.len = PCI_VPD_PCI22_SIZE;
         vpd->base.ops = &pci_vpd_pci22_ops;
         spin_lock_init(&vpd->lock);
         vpd->cap = cap;
diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
index 648596d469f6..91156f85a926 100644
--- a/drivers/pci/hotplug/acpiphp_glue.c
+++ b/drivers/pci/hotplug/acpiphp_glue.c
@@ -700,9 +700,10 @@ cleanup_p2p_bridge(acpi_handle handle, u32 lvl, void *context, void **rv)
         acpi_walk_namespace(ACPI_TYPE_DEVICE, handle, (u32)1,
                                 cleanup_p2p_bridge, NULL, NULL);
 
-        if (!(bridge = acpiphp_handle_to_bridge(handle)))
-                return AE_OK;
-        cleanup_bridge(bridge);
+        bridge = acpiphp_handle_to_bridge(handle);
+        if (bridge)
+                cleanup_bridge(bridge);
+
         return AE_OK;
 }
 
@@ -715,9 +716,19 @@ static void remove_bridge(acpi_handle handle)
         acpi_walk_namespace(ACPI_TYPE_DEVICE, handle,
                                 (u32)1, cleanup_p2p_bridge, NULL, NULL);
 
+        /*
+         * On root bridges with hotplug slots directly underneath (ie,
+         * no p2p bridge inbetween), we call cleanup_bridge(). 
+         *
+         * The else clause cleans up root bridges that either had no
+         * hotplug slots at all, or had a p2p bridge underneath.
+         */
         bridge = acpiphp_handle_to_bridge(handle);
         if (bridge)
                 cleanup_bridge(bridge);
+        else
+                acpi_remove_notify_handler(handle, ACPI_SYSTEM_NOTIFY,
+                                           handle_hotplug_event_bridge);
 }
 
 static struct pci_dev * get_apic_pci_info(acpi_handle handle)
diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index 6f3c7446c329..9c718583a237 100644
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -736,9 +736,9 @@ int __must_check pci_create_sysfs_dev_files (struct pci_dev *pdev)
                 attr = kzalloc(sizeof(*attr), GFP_ATOMIC);
                 if (attr) {
                         pdev->vpd->attr = attr;
-                        attr->size = pdev->vpd->ops->get_size(pdev);
+                        attr->size = pdev->vpd->len;
                         attr->attr.name = "vpd";
-                        attr->attr.mode = S_IRUGO | S_IWUSR;
+                        attr->attr.mode = S_IRUSR | S_IWUSR;
                         attr->read = pci_read_vpd;
                         attr->write = pci_write_vpd;
                         retval = sysfs_create_bin_file(&pdev->dev.kobj, attr);
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index 0a497c1b4227..00408c97e5fc 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -21,11 +21,11 @@ extern int pci_user_write_config_dword(struct pci_dev *dev, int where, u32 val);
 struct pci_vpd_ops {
         int (*read)(struct pci_dev *dev, int pos, int size, char *buf);
         int (*write)(struct pci_dev *dev, int pos, int size, const char *buf);
-        int (*get_size)(struct pci_dev *dev);
         void (*release)(struct pci_dev *dev);
 };
 
 struct pci_vpd {
+        unsigned int len;
         struct pci_vpd_ops *ops;
         struct bin_attribute *attr; /* descriptor for sysfs VPD entry */
 };
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index dabb563f51d9..338a3f94b4d4 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -1670,6 +1670,48 @@ static void __devinit quirk_via_cx700_pci_parking_caching(struct pci_dev *dev)
 }
 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_VIA, 0x324e, quirk_via_cx700_pci_parking_caching);
 
+/*
+ * For Broadcom 5706, 5708, 5709 rev. A nics, any read beyond the
+ * VPD end tag will hang the device.  This problem was initially
+ * observed when a vpd entry was created in sysfs
+ * ('/sys/bus/pci/devices/<id>/vpd').   A read to this sysfs entry
+ * will dump 32k of data.  Reading a full 32k will cause an access
+ * beyond the VPD end tag causing the device to hang.  Once the device
+ * is hung, the bnx2 driver will not be able to reset the device.
+ * We believe that it is legal to read beyond the end tag and
+ * therefore the solution is to limit the read/write length.
+ */
+static void __devinit quirk_brcm_570x_limit_vpd(struct pci_dev *dev)
+{
+        /*  Only disable the VPD capability for 5706, 5708, and 5709 rev. A */
+        if ((dev->device == PCI_DEVICE_ID_NX2_5706) ||
+            (dev->device == PCI_DEVICE_ID_NX2_5708) ||
+            ((dev->device == PCI_DEVICE_ID_NX2_5709) &&
+             (dev->revision & 0xf0) == 0x0)) {
+                if (dev->vpd)
+                        dev->vpd->len = 0x80;
+        }
+}
+
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM,
+                         PCI_DEVICE_ID_NX2_5706,
+                         quirk_brcm_570x_limit_vpd);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM,
+                         PCI_DEVICE_ID_NX2_5706S,
+                         quirk_brcm_570x_limit_vpd);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM,
+                         PCI_DEVICE_ID_NX2_5708,
+                         quirk_brcm_570x_limit_vpd);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM,
+                         PCI_DEVICE_ID_NX2_5708S,
+                         quirk_brcm_570x_limit_vpd);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM,
+                         PCI_DEVICE_ID_NX2_5709,
+                         quirk_brcm_570x_limit_vpd);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM,
+                         PCI_DEVICE_ID_NX2_5709S,
+                         quirk_brcm_570x_limit_vpd);
+
 #ifdef CONFIG_PCI_MSI
 /* Some chipsets do not support MSI. We cannot easily rely on setting
  * PCI_BUS_FLAGS_NO_MSI in its bus flags because there are actually
@@ -1685,6 +1727,7 @@ static void __init quirk_disable_all_msi(struct pci_dev *dev)
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_GCNB_LE, quirk_disable_all_msi);
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS400_200, quirk_disable_all_msi);
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS480, quirk_disable_all_msi);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3336, quirk_disable_all_msi);
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3351, quirk_disable_all_msi);
 
 /* Disable MSI on chipsets that are known to not support it */
diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c
index 7e3ad4f3b343..58b7336640ff 100644
--- a/drivers/rtc/interface.c
+++ b/drivers/rtc/interface.c
@@ -126,12 +126,25 @@ int rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm)
         int err;
         struct rtc_time before, now;
         int first_time = 1;
+        unsigned long t_now, t_alm;
+        enum { none, day, month, year } missing = none;
+        unsigned days;
 
-        /* The lower level RTC driver may not be capable of filling
-         * in all fields of the rtc_time struct (eg. rtc-cmos),
-         * and so might instead return -1 in some fields.
-         * We deal with that here by grabbing a current RTC timestamp
-         * and using values from that for any missing (-1) values.
+        /* The lower level RTC driver may return -1 in some fields,
+         * creating invalid alarm->time values, for reasons like:
+         *
+         *   - The hardware may not be capable of filling them in;
+         *     many alarms match only on time-of-day fields, not
+         *     day/month/year calendar data.
+         *
+         *   - Some hardware uses illegal values as "wildcard" match
+         *     values, which non-Linux firmware (like a BIOS) may try
+         *     to set up as e.g. "alarm 15 minutes after each hour".
+         *     Linux uses only oneshot alarms.
+         *
+         * When we see that here, we deal with it by using values from
+         * a current RTC timestamp for any missing (-1) values.  The
+         * RTC driver prevents "periodic alarm" modes.
          *
          * But this can be racey, because some fields of the RTC timestamp
          * may have wrapped in the interval since we read the RTC alarm,
@@ -174,6 +187,10 @@ int rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm)
                 if (!alarm->enabled)
                         return 0;
 
+                /* full-function RTCs won't have such missing fields */
+                if (rtc_valid_tm(&alarm->time) == 0)
+                        return 0;
+
                 /* get the "after" timestamp, to detect wrapped fields */
                 err = rtc_read_time(rtc, &now);
                 if (err < 0)
@@ -183,22 +200,85 @@ int rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm)
         } while (   before.tm_min   != now.tm_min
                  || before.tm_hour  != now.tm_hour
                  || before.tm_mon   != now.tm_mon
-                 || before.tm_year  != now.tm_year
-                 || before.tm_isdst != now.tm_isdst);
+                 || before.tm_year  != now.tm_year);
 
-        /* Fill in any missing alarm fields using the timestamp */
+        /* Fill in the missing alarm fields using the timestamp; we
+         * know there's at least one since alarm->time is invalid.
+         */
         if (alarm->time.tm_sec == -1)
                 alarm->time.tm_sec = now.tm_sec;
         if (alarm->time.tm_min == -1)
                 alarm->time.tm_min = now.tm_min;
         if (alarm->time.tm_hour == -1)
                 alarm->time.tm_hour = now.tm_hour;
-        if (alarm->time.tm_mday == -1)
+
+        /* For simplicity, only support date rollover for now */
+        if (alarm->time.tm_mday == -1) {
                 alarm->time.tm_mday = now.tm_mday;
-        if (alarm->time.tm_mon == -1)
+                missing = day;
+        }
+        if (alarm->time.tm_mon == -1) {
                 alarm->time.tm_mon = now.tm_mon;
-        if (alarm->time.tm_year == -1)
+                if (missing == none)
+                        missing = month;
+        }
+        if (alarm->time.tm_year == -1) {
                 alarm->time.tm_year = now.tm_year;
+                if (missing == none)
+                        missing = year;
+        }
+
+        /* with luck, no rollover is needed */
+        rtc_tm_to_time(&now, &t_now);
+        rtc_tm_to_time(&alarm->time, &t_alm);
+        if (t_now < t_alm)
+                goto done;
+
+        switch (missing) {
+
+        /* 24 hour rollover ... if it's now 10am Monday, an alarm that
+         * that will trigger at 5am will do so at 5am Tuesday, which
+         * could also be in the next month or year.  This is a common
+         * case, especially for PCs.
+         */
+        case day:
+                dev_dbg(&rtc->dev, "alarm rollover: %s\n", "day");
+                t_alm += 24 * 60 * 60;
+                rtc_time_to_tm(t_alm, &alarm->time);
+                break;
+
+        /* Month rollover ... if it's the 31th, an alarm on the 3rd will
+         * be next month.  An alarm matching on the 30th, 29th, or 28th
+         * may end up in the month after that!  Many newer PCs support
+         * this type of alarm.
+         */
+        case month:
+                dev_dbg(&rtc->dev, "alarm rollover: %s\n", "month");
+                do {
+                        if (alarm->time.tm_mon < 11)
+                                alarm->time.tm_mon++;
+                        else {
+                                alarm->time.tm_mon = 0;
+                                alarm->time.tm_year++;
+                        }
+                        days = rtc_month_days(alarm->time.tm_mon,
+                                        alarm->time.tm_year);
+                } while (days < alarm->time.tm_mday);
+                break;
+
+        /* Year rollover ... easy except for leap years! */
+        case year:
+                dev_dbg(&rtc->dev, "alarm rollover: %s\n", "year");
+                do {
+                        alarm->time.tm_year++;
+                } while (!rtc_valid_tm(&alarm->time));
+                break;
+
+        default:
+                dev_warn(&rtc->dev, "alarm rollover not handled\n");
+        }
+
+done:
         return 0;
 }
 EXPORT_SYMBOL_GPL(rtc_read_alarm);
diff --git a/drivers/rtc/rtc-sa1100.c b/drivers/rtc/rtc-sa1100.c
index 82f62d25f921..67421b0d3a7b 100644
--- a/drivers/rtc/rtc-sa1100.c
+++ b/drivers/rtc/rtc-sa1100.c
@@ -331,14 +331,14 @@ static int sa1100_rtc_probe(struct platform_device *pdev)
                 RCNR = 0;
         }
 
+        device_init_wakeup(&pdev->dev, 1);
+
         rtc = rtc_device_register(pdev->name, &pdev->dev, &sa1100_rtc_ops,
                                 THIS_MODULE);
 
         if (IS_ERR(rtc))
                 return PTR_ERR(rtc);
 
-        device_init_wakeup(&pdev->dev, 1);
-
         platform_set_drvdata(pdev, rtc);
 
         return 0;
diff --git a/drivers/rtc/rtc-x1205.c b/drivers/rtc/rtc-x1205.c
index eaf55945f21b..7dcfba1bbfe1 100644
--- a/drivers/rtc/rtc-x1205.c
+++ b/drivers/rtc/rtc-x1205.c
@@ -71,6 +71,7 @@
 #define X1205_SR_RTCF           0x01    /* Clock failure */
 #define X1205_SR_WEL            0x02    /* Write Enable Latch */
 #define X1205_SR_RWEL           0x04    /* Register Write Enable */
+#define X1205_SR_AL0            0x20    /* Alarm 0 match */
 
 #define X1205_DTR_DTR0          0x01
 #define X1205_DTR_DTR1          0x02
@@ -78,6 +79,8 @@
 
 #define X1205_HR_MIL            0x80    /* Set in ccr.hour for 24 hr mode */
 
+#define X1205_INT_AL0E          0x20    /* Alarm 0 enable */
+
 static struct i2c_driver x1205_driver;
 
 /*
@@ -89,8 +92,8 @@ static int x1205_get_datetime(struct i2c_client *client, struct rtc_time *tm,
                                 unsigned char reg_base)
 {
         unsigned char dt_addr[2] = { 0, reg_base };
-
         unsigned char buf[8];
+        int i;
 
         struct i2c_msg msgs[] = {
                 { client->addr, 0, 2, dt_addr },        /* setup read ptr */
@@ -98,7 +101,7 @@ static int x1205_get_datetime(struct i2c_client *client, struct rtc_time *tm,
         };
 
         /* read date registers */
-        if ((i2c_transfer(client->adapter, &msgs[0], 2)) != 2) {
+        if (i2c_transfer(client->adapter, &msgs[0], 2) != 2) {
                 dev_err(&client->dev, "%s: read error\n", __func__);
                 return -EIO;
         }
@@ -110,6 +113,11 @@ static int x1205_get_datetime(struct i2c_client *client, struct rtc_time *tm,
                 buf[0], buf[1], buf[2], buf[3],
                 buf[4], buf[5], buf[6], buf[7]);
 
+        /* Mask out the enable bits if these are alarm registers */
+        if (reg_base < X1205_CCR_BASE)
+                for (i = 0; i <= 4; i++)
+                        buf[i] &= 0x7F;
+
         tm->tm_sec = BCD2BIN(buf[CCR_SEC]);
         tm->tm_min = BCD2BIN(buf[CCR_MIN]);
         tm->tm_hour = BCD2BIN(buf[CCR_HOUR] & 0x3F); /* hr is 0-23 */
@@ -138,7 +146,7 @@ static int x1205_get_status(struct i2c_client *client, unsigned char *sr)
         };
 
         /* read status register */
-        if ((i2c_transfer(client->adapter, &msgs[0], 2)) != 2) {
+        if (i2c_transfer(client->adapter, &msgs[0], 2) != 2) {
                 dev_err(&client->dev, "%s: read error\n", __func__);
                 return -EIO;
         }
@@ -147,10 +155,11 @@ static int x1205_get_status(struct i2c_client *client, unsigned char *sr)
 }
 
 static int x1205_set_datetime(struct i2c_client *client, struct rtc_time *tm,
-                                int datetoo, u8 reg_base)
+                        int datetoo, u8 reg_base, unsigned char alm_enable)
 {
-        int i, xfer;
+        int i, xfer, nbytes;
         unsigned char buf[8];
+        unsigned char rdata[10] = { 0, reg_base };
 
         static const unsigned char wel[3] = { 0, X1205_REG_SR,
                                                 X1205_SR_WEL };
@@ -189,6 +198,11 @@ static int x1205_set_datetime(struct i2c_client *client, struct rtc_time *tm,
                 buf[CCR_Y2K] = BIN2BCD(tm->tm_year / 100);
         }
 
+        /* If writing alarm registers, set compare bits on registers 0-4 */
+        if (reg_base < X1205_CCR_BASE)
+                for (i = 0; i <= 4; i++)
+                        buf[i] |= 0x80;
+
         /* this sequence is required to unlock the chip */
         if ((xfer = i2c_master_send(client, wel, 3)) != 3) {
                 dev_err(&client->dev, "%s: wel - %d\n", __func__, xfer);
@@ -200,19 +214,57 @@ static int x1205_set_datetime(struct i2c_client *client, struct rtc_time *tm,
                 return -EIO;
         }
 
+
         /* write register's data */
-        for (i = 0; i < (datetoo ? 8 : 3); i++) {
-                unsigned char rdata[3] = { 0, reg_base + i, buf[i] };
+        if (datetoo)
+                nbytes = 8;
+        else
+                nbytes = 3;
+        for (i = 0; i < nbytes; i++)
+                rdata[2+i] = buf[i];
+
+        xfer = i2c_master_send(client, rdata, nbytes+2);
+        if (xfer != nbytes+2) {
+                dev_err(&client->dev,
+                        "%s: result=%d addr=%02x, data=%02x\n",
+                        __func__,
+                         xfer, rdata[1], rdata[2]);
+                return -EIO;
+        }
+
+        /* If we wrote to the nonvolatile region, wait 10msec for write cycle*/
+        if (reg_base < X1205_CCR_BASE) {
+                unsigned char al0e[3] = { 0, X1205_REG_INT, 0 };
+
+                msleep(10);
 
-                xfer = i2c_master_send(client, rdata, 3);
+                /* ...and set or clear the AL0E bit in the INT register */
+
+                /* Need to set RWEL again as the write has cleared it */
+                xfer = i2c_master_send(client, rwel, 3);
                 if (xfer != 3) {
                         dev_err(&client->dev,
-                                "%s: xfer=%d addr=%02x, data=%02x\n",
+                                "%s: aloe rwel - %d\n",
                                 __func__,
-                                 xfer, rdata[1], rdata[2]);
+                                xfer);
+                        return -EIO;
+                }
+
+                if (alm_enable)
+                        al0e[2] = X1205_INT_AL0E;
+
+                xfer = i2c_master_send(client, al0e, 3);
+                if (xfer != 3) {
+                        dev_err(&client->dev,
+                                "%s: al0e - %d\n",
+                                __func__,
+                                xfer);
                         return -EIO;
                 }
-        };
+
+                /* and wait 10msec again for this write to complete */
+                msleep(10);
+        }
 
         /* disable further writes */
         if ((xfer = i2c_master_send(client, diswe, 3)) != 3) {
@@ -230,9 +282,9 @@ static int x1205_fix_osc(struct i2c_client *client)
 
         tm.tm_hour = tm.tm_min = tm.tm_sec = 0;
 
-        if ((err = x1205_set_datetime(client, &tm, 0, X1205_CCR_BASE)) < 0)
-                dev_err(&client->dev,
-                        "unable to restart the oscillator\n");
+        err = x1205_set_datetime(client, &tm, 0, X1205_CCR_BASE, 0);
+        if (err < 0)
+                dev_err(&client->dev, "unable to restart the oscillator\n");
 
         return err;
 }
@@ -248,7 +300,7 @@ static int x1205_get_dtrim(struct i2c_client *client, int *trim)
         };
 
         /* read dtr register */
-        if ((i2c_transfer(client->adapter, &msgs[0], 2)) != 2) {
+        if (i2c_transfer(client->adapter, &msgs[0], 2) != 2) {
                 dev_err(&client->dev, "%s: read error\n", __func__);
                 return -EIO;
         }
@@ -280,7 +332,7 @@ static int x1205_get_atrim(struct i2c_client *client, int *trim)
         };
 
         /* read atr register */
-        if ((i2c_transfer(client->adapter, &msgs[0], 2)) != 2) {
+        if (i2c_transfer(client->adapter, &msgs[0], 2) != 2) {
                 dev_err(&client->dev, "%s: read error\n", __func__);
                 return -EIO;
         }
@@ -403,14 +455,33 @@ static int x1205_validate_client(struct i2c_client *client)
 
 static int x1205_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
 {
-        return x1205_get_datetime(to_i2c_client(dev),
-                &alrm->time, X1205_ALM0_BASE);
+        int err;
+        unsigned char intreg, status;
+        static unsigned char int_addr[2] = { 0, X1205_REG_INT };
+        struct i2c_client *client = to_i2c_client(dev);
+        struct i2c_msg msgs[] = {
+                { client->addr, 0, 2, int_addr },        /* setup read ptr */
+                { client->addr, I2C_M_RD, 1, &intreg },  /* read INT register */
+        };
+
+        /* read interrupt register and status register */
+        if (i2c_transfer(client->adapter, &msgs[0], 2) != 2) {
+                dev_err(&client->dev, "%s: read error\n", __func__);
+                return -EIO;
+        }
+        err = x1205_get_status(client, &status);
+        if (err == 0) {
+                alrm->pending = (status & X1205_SR_AL0) ? 1 : 0;
+                alrm->enabled = (intreg & X1205_INT_AL0E) ? 1 : 0;
+                err = x1205_get_datetime(client, &alrm->time, X1205_ALM0_BASE);
+        }
+        return err;
 }
 
 static int x1205_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
 {
         return x1205_set_datetime(to_i2c_client(dev),
-                &alrm->time, 1, X1205_ALM0_BASE);
+                &alrm->time, 1, X1205_ALM0_BASE, alrm->enabled);
 }
 
 static int x1205_rtc_read_time(struct device *dev, struct rtc_time *tm)
@@ -422,7 +493,7 @@ static int x1205_rtc_read_time(struct device *dev, struct rtc_time *tm)
 static int x1205_rtc_set_time(struct device *dev, struct rtc_time *tm)
 {
         return x1205_set_datetime(to_i2c_client(dev),
-                tm, 1, X1205_CCR_BASE);
+                tm, 1, X1205_CCR_BASE, 0);
 }
 
 static int x1205_rtc_proc(struct device *dev, struct seq_file *seq)
diff --git a/drivers/scsi/esp_scsi.c b/drivers/scsi/esp_scsi.c
index a0b6d414953d..59fbef08d690 100644
--- a/drivers/scsi/esp_scsi.c
+++ b/drivers/scsi/esp_scsi.c
@@ -2359,6 +2359,24 @@ void scsi_esp_unregister(struct esp *esp)
 }
 EXPORT_SYMBOL(scsi_esp_unregister);
 
+static int esp_target_alloc(struct scsi_target *starget)
+{
+        struct esp *esp = shost_priv(dev_to_shost(&starget->dev));
+        struct esp_target_data *tp = &esp->target[starget->id];
+
+        tp->starget = starget;
+
+        return 0;
+}
+
+static void esp_target_destroy(struct scsi_target *starget)
+{
+        struct esp *esp = shost_priv(dev_to_shost(&starget->dev));
+        struct esp_target_data *tp = &esp->target[starget->id];
+
+        tp->starget = NULL;
+}
+
 static int esp_slave_alloc(struct scsi_device *dev)
 {
         struct esp *esp = shost_priv(dev->host);
@@ -2370,8 +2388,6 @@ static int esp_slave_alloc(struct scsi_device *dev)
                 return -ENOMEM;
         dev->hostdata = lp;
 
-        tp->starget = dev->sdev_target;
-
         spi_min_period(tp->starget) = esp->min_period;
         spi_max_offset(tp->starget) = 15;
 
@@ -2608,6 +2624,8 @@ struct scsi_host_template scsi_esp_template = {
         .name                   = "esp",
         .info                   = esp_info,
         .queuecommand           = esp_queuecommand,
+        .target_alloc           = esp_target_alloc,
+        .target_destroy         = esp_target_destroy,
         .slave_alloc            = esp_slave_alloc,
         .slave_configure        = esp_slave_configure,
         .slave_destroy          = esp_slave_destroy,
diff --git a/drivers/scsi/ses.c b/drivers/scsi/ses.c
index 45df83b9d847..0fe031f003e7 100644
--- a/drivers/scsi/ses.c
+++ b/drivers/scsi/ses.c
@@ -61,7 +61,7 @@ static int ses_probe(struct device *dev)
         return err;
 }
 
-#define SES_TIMEOUT 30
+#define SES_TIMEOUT (30 * HZ)
 #define SES_RETRIES 3
 
 static int ses_recv_diag(struct scsi_device *sdev, int page_code,
diff --git a/drivers/serial/serial_core.c b/drivers/serial/serial_core.c
index c9b64e73c987..42d2e108b679 100644
--- a/drivers/serial/serial_core.c
+++ b/drivers/serial/serial_core.c
@@ -1991,7 +1991,9 @@ struct uart_match {
 static int serial_match_port(struct device *dev, void *data)
 {
         struct uart_match *match = data;
-        dev_t devt = MKDEV(match->driver->major, match->driver->minor) + match->port->line;
+        struct tty_driver *tty_drv = match->driver->tty_driver;
+        dev_t devt = MKDEV(tty_drv->major, tty_drv->minor_start) +
+                match->port->line;
 
         return dev->devt == devt; /* Actually, only one tty per port */
 }
diff --git a/drivers/spi/spidev.c b/drivers/spi/spidev.c
index 799337f7fde1..f5b60c70389b 100644
--- a/drivers/spi/spidev.c
+++ b/drivers/spi/spidev.c
@@ -167,14 +167,14 @@ spidev_read(struct file *filp, char __user *buf, size_t count, loff_t *f_pos)
 
         mutex_lock(&spidev->buf_lock);
         status = spidev_sync_read(spidev, count);
-        if (status == 0) {
+        if (status > 0) {
                 unsigned long   missing;
 
-                missing = copy_to_user(buf, spidev->buffer, count);
-                if (count && missing == count)
+                missing = copy_to_user(buf, spidev->buffer, status);
+                if (missing == status)
                         status = -EFAULT;
                 else
-                        status = count - missing;
+                        status = status - missing;
         }
         mutex_unlock(&spidev->buf_lock);
 
@@ -200,8 +200,6 @@ spidev_write(struct file *filp, const char __user *buf,
         missing = copy_from_user(spidev->buffer, buf, count);
         if (missing == 0) {
                 status = spidev_sync_write(spidev, count);
-                if (status == 0)
-                        status = count;
         } else
                 status = -EFAULT;
         mutex_unlock(&spidev->buf_lock);
diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig
index 4b628526df09..a86e952ed4ca 100644
--- a/drivers/thermal/Kconfig
+++ b/drivers/thermal/Kconfig
@@ -12,3 +12,12 @@ menuconfig THERMAL
           cooling devices.
           All platforms with ACPI thermal support can use this driver.
           If you want this support, you should say Y or M here.
+
+config THERMAL_HWMON
+        bool "Hardware monitoring support"
+        depends on HWMON=y || HWMON=THERMAL
+        help
+          The generic thermal sysfs driver's hardware monitoring support
+          requires a 2.10.7/3.0.2 or later lm-sensors userspace.
+
+          Say Y if your user-space is new enough.
diff --git a/drivers/thermal/thermal_sys.c b/drivers/thermal/thermal_sys.c
index 6098787341f3..fe07462d5947 100644
--- a/drivers/thermal/thermal_sys.c
+++ b/drivers/thermal/thermal_sys.c
@@ -295,8 +295,8 @@ thermal_cooling_device_trip_point_show(struct device *dev,
 
 /* Device management */
 
-#if defined(CONFIG_HWMON) ||    \
-        (defined(CONFIG_HWMON_MODULE) && defined(CONFIG_THERMAL_MODULE))
+#if defined(CONFIG_THERMAL_HWMON)
+
 /* hwmon sys I/F */
 #include <linux/hwmon.h>
 static LIST_HEAD(thermal_hwmon_list);
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index 63c34043b4d9..c3201affa0b6 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -1125,9 +1125,6 @@ static void stop_data_traffic(struct acm *acm)
         for (i = 0; i < acm->rx_buflimit; i++)
                 usb_kill_urb(acm->ru[i].urb);
 
-        INIT_LIST_HEAD(&acm->filled_read_bufs);
-        INIT_LIST_HEAD(&acm->spare_read_bufs);
-
         tasklet_enable(&acm->urb_task);
 
         cancel_work_sync(&acm->work);
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index 09a53e7f3327..42a436478b78 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -924,6 +924,15 @@ static int register_root_hub(struct usb_hcd *hcd)
         return retval;
 }
 
+void usb_enable_root_hub_irq (struct usb_bus *bus)
+{
+        struct usb_hcd *hcd;
+
+        hcd = container_of (bus, struct usb_hcd, self);
+        if (hcd->driver->hub_irq_enable && hcd->state != HC_STATE_HALT)
+                hcd->driver->hub_irq_enable (hcd);
+}
+
 
 /*-------------------------------------------------------------------------*/
 
@@ -1684,19 +1693,30 @@ EXPORT_SYMBOL_GPL(usb_bus_start_enum);
 irqreturn_t usb_hcd_irq (int irq, void *__hcd)
 {
         struct usb_hcd          *hcd = __hcd;
-        int                     start = hcd->state;
+        unsigned long           flags;
+        irqreturn_t             rc;
 
-        if (unlikely(start == HC_STATE_HALT ||
-            !test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags)))
-                return IRQ_NONE;
-        if (hcd->driver->irq (hcd) == IRQ_NONE)
-                return IRQ_NONE;
+        /* IRQF_DISABLED doesn't work correctly with shared IRQs
+         * when the first handler doesn't use it.  So let's just
+         * assume it's never used.
+         */
+        local_irq_save(flags);
 
-        set_bit(HCD_FLAG_SAW_IRQ, &hcd->flags);
+        if (unlikely(hcd->state == HC_STATE_HALT ||
+                     !test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags))) {
+                rc = IRQ_NONE;
+        } else if (hcd->driver->irq(hcd) == IRQ_NONE) {
+                rc = IRQ_NONE;
+        } else {
+                set_bit(HCD_FLAG_SAW_IRQ, &hcd->flags);
+
+                if (unlikely(hcd->state == HC_STATE_HALT))
+                        usb_hc_died(hcd);
+                rc = IRQ_HANDLED;
+        }
 
-        if (unlikely(hcd->state == HC_STATE_HALT))
-                usb_hc_died (hcd);
-        return IRQ_HANDLED;
+        local_irq_restore(flags);
+        return rc;
 }
 
 /*-------------------------------------------------------------------------*/
@@ -1860,6 +1880,13 @@ int usb_add_hcd(struct usb_hcd *hcd,
 
         /* enable irqs just before we start the controller */
         if (hcd->driver->irq) {
+
+                /* IRQF_DISABLED doesn't work as advertised when used together
+                 * with IRQF_SHARED. As usb_hcd_irq() will always disable
+                 * interrupts we can remove it here.
+                 */
+                irqflags &= ~IRQF_DISABLED;
+
                 snprintf(hcd->irq_descr, sizeof(hcd->irq_descr), "%s:usb%d",
                                 hcd->driver->description, hcd->self.busnum);
                 if ((retval = request_irq(irqnum, &usb_hcd_irq, irqflags,
diff --git a/drivers/usb/core/hcd.h b/drivers/usb/core/hcd.h
index a0bf5df6cb6f..b9de1569b39e 100644
--- a/drivers/usb/core/hcd.h
+++ b/drivers/usb/core/hcd.h
@@ -210,6 +210,8 @@ struct hc_driver {
         int     (*bus_suspend)(struct usb_hcd *);
         int     (*bus_resume)(struct usb_hcd *);
         int     (*start_port_reset)(struct usb_hcd *, unsigned port_num);
+        void    (*hub_irq_enable)(struct usb_hcd *);
+                /* Needed only if port-change IRQs are level-triggered */
 
                 /* force handover of high-speed port to full-speed companion */
         void    (*relinquish_port)(struct usb_hcd *, int);
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 94789be54ca3..4cfe32a16c37 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -713,18 +713,11 @@ static void hub_restart(struct usb_hub *hub, int type)
                 }
 
                 /* Was the power session lost while we were suspended? */
-                switch (type) {
-                case HUB_RESET_RESUME:
-                        portstatus = 0;
-                        portchange = USB_PORT_STAT_C_CONNECTION;
-                        break;
+                status = hub_port_status(hub, port1, &portstatus, &portchange);
 
-                case HUB_RESET:
-                case HUB_RESUME:
-                        status = hub_port_status(hub, port1,
-                                        &portstatus, &portchange);
-                        break;
-                }
+                /* If the device is gone, khubd will handle it later */
+                if (status == 0 && !(portstatus & USB_PORT_STAT_CONNECTION))
+                        continue;
 
                 /* For "USB_PERSIST"-enabled children we must
                  * mark the child device for reset-resume and
@@ -2080,6 +2073,8 @@ int usb_port_resume(struct usb_device *udev)
         }
 
         clear_bit(port1, hub->busy_bits);
+        if (!hub->hdev->parent && !hub->busy_bits[0])
+                usb_enable_root_hub_irq(hub->hdev->bus);
 
         if (status == 0)
                 status = finish_port_resume(udev);
@@ -3009,6 +3004,11 @@ static void hub_events(void)
 
                 hub->activating = 0;
 
+                /* If this is a root hub, tell the HCD it's okay to
+                 * re-enable port-change interrupts now. */
+                if (!hdev->parent && !hub->busy_bits[0])
+                        usb_enable_root_hub_irq(hdev->bus);
+
 loop_autopm:
                 /* Allow autosuspend if we're not going to run again */
                 if (list_empty(&hub->event_list))
@@ -3234,6 +3234,8 @@ int usb_reset_device(struct usb_device *udev)
                         break;
         }
         clear_bit(port1, parent_hub->busy_bits);
+        if (!parent_hdev->parent && !parent_hub->busy_bits[0])
+                usb_enable_root_hub_irq(parent_hdev->bus);
 
         if (ret < 0)
                 goto re_enumerate;
diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
index 35a03095757e..90245fd8bac4 100644
--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -177,6 +177,15 @@ timer_action_done (struct ehci_hcd *ehci, enum ehci_timer_action action)
 static inline void
 timer_action (struct ehci_hcd *ehci, enum ehci_timer_action action)
 {
+        /* Don't override timeouts which shrink or (later) disable
+         * the async ring; just the I/O watchdog.  Note that if a
+         * SHRINK were pending, OFF would never be requested.
+         */
+        if (timer_pending(&ehci->watchdog)
+                        && ((BIT(TIMER_ASYNC_SHRINK) | BIT(TIMER_ASYNC_OFF))
+                                & ehci->actions))
+                return;
+
         if (!test_and_set_bit (action, &ehci->actions)) {
                 unsigned long t;
 
@@ -192,15 +201,7 @@ timer_action (struct ehci_hcd *ehci, enum ehci_timer_action action)
                         t = EHCI_SHRINK_JIFFIES;
                         break;
                 }
-                t += jiffies;
-                // all timings except IAA watchdog can be overridden.
-                // async queue SHRINK often precedes IAA.  while it's ready
-                // to go OFF neither can matter, and afterwards the IO
-                // watchdog stops unless there's still periodic traffic.
-                if (time_before_eq(t, ehci->watchdog.expires)
-                                && timer_pending (&ehci->watchdog))
-                        return;
-                mod_timer (&ehci->watchdog, t);
+                mod_timer(&ehci->watchdog, t + jiffies);
         }
 }
 
diff --git a/drivers/usb/host/ohci-at91.c b/drivers/usb/host/ohci-at91.c
index c96db1153dcf..e534f9de0f05 100644
--- a/drivers/usb/host/ohci-at91.c
+++ b/drivers/usb/host/ohci-at91.c
@@ -261,6 +261,7 @@ static const struct hc_driver ohci_at91_hc_driver = {
          */
         .hub_status_data =      ohci_hub_status_data,
         .hub_control =          ohci_hub_control,
+        .hub_irq_enable =       ohci_rhsc_enable,
 #ifdef CONFIG_PM
         .bus_suspend =          ohci_bus_suspend,
         .bus_resume =           ohci_bus_resume,
diff --git a/drivers/usb/host/ohci-au1xxx.c b/drivers/usb/host/ohci-au1xxx.c
index 1b9abdba920b..f90fe0c7373f 100644
--- a/drivers/usb/host/ohci-au1xxx.c
+++ b/drivers/usb/host/ohci-au1xxx.c
@@ -288,6 +288,7 @@ static const struct hc_driver ohci_au1xxx_hc_driver = {
          */
         .hub_status_data =      ohci_hub_status_data,
         .hub_control =          ohci_hub_control,
+        .hub_irq_enable =       ohci_rhsc_enable,
 #ifdef  CONFIG_PM
         .bus_suspend =          ohci_bus_suspend,
         .bus_resume =           ohci_bus_resume,
diff --git a/drivers/usb/host/ohci-ep93xx.c b/drivers/usb/host/ohci-ep93xx.c
index 06aadfb0ec29..5adaf36e47d0 100644
--- a/drivers/usb/host/ohci-ep93xx.c
+++ b/drivers/usb/host/ohci-ep93xx.c
@@ -135,6 +135,7 @@ static struct hc_driver ohci_ep93xx_hc_driver = {
         .get_frame_number       = ohci_get_frame,
         .hub_status_data        = ohci_hub_status_data,
         .hub_control            = ohci_hub_control,
+        .hub_irq_enable         = ohci_rhsc_enable,
 #ifdef CONFIG_PM
         .bus_suspend            = ohci_bus_suspend,
         .bus_resume             = ohci_bus_resume,
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index 33f1c1c32edf..a8160d65f32b 100644
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -1054,7 +1054,7 @@ MODULE_LICENSE ("GPL");
 
 #ifdef CONFIG_MFD_SM501
 #include "ohci-sm501.c"
-#define PLATFORM_DRIVER         ohci_hcd_sm501_driver
+#define SM501_OHCI_DRIVER       ohci_hcd_sm501_driver
 #endif
 
 #if     !defined(PCI_DRIVER) &&         \
@@ -1062,6 +1062,7 @@ MODULE_LICENSE ("GPL");
         !defined(OF_PLATFORM_DRIVER) && \
         !defined(SA1111_DRIVER) &&      \
         !defined(PS3_SYSTEM_BUS_DRIVER) && \
+        !defined(SM501_OHCI_DRIVER) && \
         !defined(SSB_OHCI_DRIVER)
 #error "missing bus glue for ohci-hcd"
 #endif
@@ -1121,9 +1122,18 @@ static int __init ohci_hcd_mod_init(void)
                 goto error_ssb;
 #endif
 
+#ifdef SM501_OHCI_DRIVER
+        retval = platform_driver_register(&SM501_OHCI_DRIVER);
+        if (retval < 0)
+                goto error_sm501;
+#endif
+
         return retval;
 
         /* Error path */
+#ifdef SM501_OHCI_DRIVER
+ error_sm501:
+#endif
 #ifdef SSB_OHCI_DRIVER
  error_ssb:
 #endif
@@ -1159,6 +1169,9 @@ module_init(ohci_hcd_mod_init);
 
 static void __exit ohci_hcd_mod_exit(void)
 {
+#ifdef SM501_OHCI_DRIVER
+        platform_driver_unregister(&SM501_OHCI_DRIVER);
+#endif
 #ifdef SSB_OHCI_DRIVER
         ssb_driver_unregister(&SSB_OHCI_DRIVER);
 #endif
diff --git a/drivers/usb/host/ohci-hub.c b/drivers/usb/host/ohci-hub.c
index 79a78029f896..b56739221d11 100644
--- a/drivers/usb/host/ohci-hub.c
+++ b/drivers/usb/host/ohci-hub.c
@@ -36,6 +36,18 @@
 
 /*-------------------------------------------------------------------------*/
 
+/* hcd->hub_irq_enable() */
+static void ohci_rhsc_enable (struct usb_hcd *hcd)
+{
+        struct ohci_hcd         *ohci = hcd_to_ohci (hcd);
+
+        spin_lock_irq(&ohci->lock);
+        if (!ohci->autostop)
+                del_timer(&hcd->rh_timer);      /* Prevent next poll */
+        ohci_writel(ohci, OHCI_INTR_RHSC, &ohci->regs->intrenable);
+        spin_unlock_irq(&ohci->lock);
+}
+
 #define OHCI_SCHED_ENABLES \
         (OHCI_CTRL_CLE|OHCI_CTRL_BLE|OHCI_CTRL_PLE|OHCI_CTRL_IE)
 
@@ -362,28 +374,18 @@ static int ohci_root_hub_state_changes(struct ohci_hcd *ohci, int changed,
                 int any_connected)
 {
         int     poll_rh = 1;
-        int     rhsc;
 
-        rhsc = ohci_readl(ohci, &ohci->regs->intrenable) & OHCI_INTR_RHSC;
         switch (ohci->hc_control & OHCI_CTRL_HCFS) {
 
         case OHCI_USB_OPER:
-                /* If no status changes are pending, enable status-change
-                 * interrupts.
-                 */
-                if (!rhsc && !changed) {
-                        rhsc = OHCI_INTR_RHSC;
-                        ohci_writel(ohci, rhsc, &ohci->regs->intrenable);
-                }
-
-                /* Keep on polling until we know a device is connected
-                 * and RHSC is enabled, or until we autostop.
-                 */
+                /* keep on polling until we know a device is connected
+                 * and RHSC is enabled */
                 if (!ohci->autostop) {
                         if (any_connected ||
                                         !device_may_wakeup(&ohci_to_hcd(ohci)
                                                 ->self.root_hub->dev)) {
-                                if (rhsc)
+                                if (ohci_readl(ohci, &ohci->regs->intrenable) &
+                                                OHCI_INTR_RHSC)
                                         poll_rh = 0;
                         } else {
                                 ohci->autostop = 1;
@@ -396,13 +398,12 @@ static int ohci_root_hub_state_changes(struct ohci_hcd *ohci, int changed,
                                 ohci->autostop = 0;
                                 ohci->next_statechange = jiffies +
                                                 STATECHANGE_DELAY;
-                        } else if (rhsc && time_after_eq(jiffies,
+                        } else if (time_after_eq(jiffies,
                                                 ohci->next_statechange)
                                         && !ohci->ed_rm_list
                                         && !(ohci->hc_control &
                                                 OHCI_SCHED_ENABLES)) {
                                 ohci_rh_suspend(ohci, 1);
-                                poll_rh = 0;
                         }
                 }
                 break;
@@ -416,12 +417,6 @@ static int ohci_root_hub_state_changes(struct ohci_hcd *ohci, int changed,
                         else
                                 usb_hcd_resume_root_hub(ohci_to_hcd(ohci));
                 } else {
-                        if (!rhsc && (ohci->autostop ||
-                                        ohci_to_hcd(ohci)->self.root_hub->
-                                                do_remote_wakeup))
-                                ohci_writel(ohci, OHCI_INTR_RHSC,
-                                                &ohci->regs->intrenable);
-
                         /* everything is idle, no need for polling */
                         poll_rh = 0;
                 }
@@ -443,16 +438,12 @@ static inline int ohci_rh_resume(struct ohci_hcd *ohci)
 static int ohci_root_hub_state_changes(struct ohci_hcd *ohci, int changed,
                 int any_connected)
 {
-        /* If RHSC is enabled, don't poll */
-        if (ohci_readl(ohci, &ohci->regs->intrenable) & OHCI_INTR_RHSC)
-                return 0;
+        int     poll_rh = 1;
 
-        /* If no status changes are pending, enable status-change interrupts */
-        if (!changed) {
-                ohci_writel(ohci, OHCI_INTR_RHSC, &ohci->regs->intrenable);
-                return 0;
-        }
-        return 1;
+        /* keep on polling until RHSC is enabled */
+        if (ohci_readl(ohci, &ohci->regs->intrenable) & OHCI_INTR_RHSC)
+                poll_rh = 0;
+        return poll_rh;
 }
 
 #endif  /* CONFIG_PM */
diff --git a/drivers/usb/host/ohci-lh7a404.c b/drivers/usb/host/ohci-lh7a404.c
index 96d14fa1d833..13c12ed22252 100644
--- a/drivers/usb/host/ohci-lh7a404.c
+++ b/drivers/usb/host/ohci-lh7a404.c
@@ -193,6 +193,7 @@ static const struct hc_driver ohci_lh7a404_hc_driver = {
          */
         .hub_status_data =      ohci_hub_status_data,
         .hub_control =          ohci_hub_control,
+        .hub_irq_enable =       ohci_rhsc_enable,
 #ifdef  CONFIG_PM
         .bus_suspend =          ohci_bus_suspend,
         .bus_resume =           ohci_bus_resume,
diff --git a/drivers/usb/host/ohci-omap.c b/drivers/usb/host/ohci-omap.c
index 6859fb5f1d6f..3a7c24c03671 100644
--- a/drivers/usb/host/ohci-omap.c
+++ b/drivers/usb/host/ohci-omap.c
@@ -466,6 +466,7 @@ static const struct hc_driver ohci_omap_hc_driver = {
          */
         .hub_status_data =      ohci_hub_status_data,
         .hub_control =          ohci_hub_control,
+        .hub_irq_enable =       ohci_rhsc_enable,
 #ifdef  CONFIG_PM
         .bus_suspend =          ohci_bus_suspend,
         .bus_resume =           ohci_bus_resume,
diff --git a/drivers/usb/host/ohci-pci.c b/drivers/usb/host/ohci-pci.c
index 3bf175d95a23..4696cc912e16 100644
--- a/drivers/usb/host/ohci-pci.c
+++ b/drivers/usb/host/ohci-pci.c
@@ -327,6 +327,7 @@ static const struct hc_driver ohci_pci_hc_driver = {
          */
         .hub_status_data =      ohci_hub_status_data,
         .hub_control =          ohci_hub_control,
+        .hub_irq_enable =       ohci_rhsc_enable,
 #ifdef  CONFIG_PM
         .bus_suspend =          ohci_bus_suspend,
         .bus_resume =           ohci_bus_resume,
diff --git a/drivers/usb/host/ohci-pnx4008.c b/drivers/usb/host/ohci-pnx4008.c
index 664f07ee8732..28b458f20cc3 100644
--- a/drivers/usb/host/ohci-pnx4008.c
+++ b/drivers/usb/host/ohci-pnx4008.c
@@ -280,6 +280,7 @@ static const struct hc_driver ohci_pnx4008_hc_driver = {
          */
         .hub_status_data = ohci_hub_status_data,
         .hub_control = ohci_hub_control,
+        .hub_irq_enable = ohci_rhsc_enable,
 #ifdef  CONFIG_PM
         .bus_suspend = ohci_bus_suspend,
         .bus_resume = ohci_bus_resume,
diff --git a/drivers/usb/host/ohci-pnx8550.c b/drivers/usb/host/ohci-pnx8550.c
index 28467e288a93..605d59cba28e 100644
--- a/drivers/usb/host/ohci-pnx8550.c
+++ b/drivers/usb/host/ohci-pnx8550.c
@@ -201,6 +201,7 @@ static const struct hc_driver ohci_pnx8550_hc_driver = {
          */
         .hub_status_data =      ohci_hub_status_data,
         .hub_control =          ohci_hub_control,
+        .hub_irq_enable =       ohci_rhsc_enable,
 #ifdef  CONFIG_PM
         .bus_suspend =          ohci_bus_suspend,
         .bus_resume =           ohci_bus_resume,
diff --git a/drivers/usb/host/ohci-ppc-of.c b/drivers/usb/host/ohci-ppc-of.c
index 50e55db13636..a67252791223 100644
--- a/drivers/usb/host/ohci-ppc-of.c
+++ b/drivers/usb/host/ohci-ppc-of.c
@@ -72,6 +72,7 @@ static const struct hc_driver ohci_ppc_of_hc_driver = {
          */
         .hub_status_data =      ohci_hub_status_data,
         .hub_control =          ohci_hub_control,
+        .hub_irq_enable =       ohci_rhsc_enable,
 #ifdef  CONFIG_PM
         .bus_suspend =          ohci_bus_suspend,
         .bus_resume =           ohci_bus_resume,
diff --git a/drivers/usb/host/ohci-ppc-soc.c b/drivers/usb/host/ohci-ppc-soc.c
index cd3398b675b2..523c30125577 100644
--- a/drivers/usb/host/ohci-ppc-soc.c
+++ b/drivers/usb/host/ohci-ppc-soc.c
@@ -172,6 +172,7 @@ static const struct hc_driver ohci_ppc_soc_hc_driver = {
          */
         .hub_status_data =      ohci_hub_status_data,
         .hub_control =          ohci_hub_control,
+        .hub_irq_enable =       ohci_rhsc_enable,
 #ifdef  CONFIG_PM
         .bus_suspend =          ohci_bus_suspend,
         .bus_resume =           ohci_bus_resume,
diff --git a/drivers/usb/host/ohci-ps3.c b/drivers/usb/host/ohci-ps3.c
index bfdeb0d22d05..c1935ae537f8 100644
--- a/drivers/usb/host/ohci-ps3.c
+++ b/drivers/usb/host/ohci-ps3.c
@@ -68,6 +68,7 @@ static const struct hc_driver ps3_ohci_hc_driver = {
         .get_frame_number       = ohci_get_frame,
         .hub_status_data        = ohci_hub_status_data,
         .hub_control            = ohci_hub_control,
+        .hub_irq_enable         = ohci_rhsc_enable,
         .start_port_reset       = ohci_start_port_reset,
 #if defined(CONFIG_PM)
         .bus_suspend            = ohci_bus_suspend,
diff --git a/drivers/usb/host/ohci-pxa27x.c b/drivers/usb/host/ohci-pxa27x.c
index 70b0d4b459e7..d4ee27d92be8 100644
--- a/drivers/usb/host/ohci-pxa27x.c
+++ b/drivers/usb/host/ohci-pxa27x.c
@@ -298,6 +298,7 @@ static const struct hc_driver ohci_pxa27x_hc_driver = {
          */
         .hub_status_data =      ohci_hub_status_data,
         .hub_control =          ohci_hub_control,
+        .hub_irq_enable =       ohci_rhsc_enable,
 #ifdef  CONFIG_PM
         .bus_suspend =          ohci_bus_suspend,
         .bus_resume =           ohci_bus_resume,
diff --git a/drivers/usb/host/ohci-q.c b/drivers/usb/host/ohci-q.c
index 9c9f3b59186f..9b547407c934 100644
--- a/drivers/usb/host/ohci-q.c
+++ b/drivers/usb/host/ohci-q.c
@@ -952,6 +952,7 @@ rescan_this:
                         struct urb      *urb;
                         urb_priv_t      *urb_priv;
                         __hc32          savebits;
+                        u32             tdINFO;
 
                         td = list_entry (entry, struct td, td_list);
                         urb = td->urb;
@@ -966,6 +967,17 @@ rescan_this:
                         savebits = *prev & ~cpu_to_hc32 (ohci, TD_MASK);
                         *prev = td->hwNextTD | savebits;
 
+                        /* If this was unlinked, the TD may not have been
+                         * retired ... so manually save the data toggle.
+                         * The controller ignores the value we save for
+                         * control and ISO endpoints.
+                         */
+                        tdINFO = hc32_to_cpup(ohci, &td->hwINFO);
+                        if ((tdINFO & TD_T) == TD_T_DATA0)
+                                ed->hwHeadP &= ~cpu_to_hc32(ohci, ED_C);
+                        else if ((tdINFO & TD_T) == TD_T_DATA1)
+                                ed->hwHeadP |= cpu_to_hc32(ohci, ED_C);
+
                         /* HC may have partly processed this TD */
                         td_done (ohci, urb, td);
                         urb_priv->td_cnt++;
diff --git a/drivers/usb/host/ohci-s3c2410.c b/drivers/usb/host/ohci-s3c2410.c
index a73d2ff322e2..ead4772f0f27 100644
--- a/drivers/usb/host/ohci-s3c2410.c
+++ b/drivers/usb/host/ohci-s3c2410.c
@@ -466,6 +466,7 @@ static const struct hc_driver ohci_s3c2410_hc_driver = {
          */
         .hub_status_data =      ohci_s3c2410_hub_status_data,
         .hub_control =          ohci_s3c2410_hub_control,
+        .hub_irq_enable =       ohci_rhsc_enable,
 #ifdef  CONFIG_PM
         .bus_suspend =          ohci_bus_suspend,
         .bus_resume =           ohci_bus_resume,
diff --git a/drivers/usb/host/ohci-sa1111.c b/drivers/usb/host/ohci-sa1111.c
index 99438c65981b..0f48f2d99226 100644
--- a/drivers/usb/host/ohci-sa1111.c
+++ b/drivers/usb/host/ohci-sa1111.c
@@ -231,6 +231,7 @@ static const struct hc_driver ohci_sa1111_hc_driver = {
          */
         .hub_status_data =      ohci_hub_status_data,
         .hub_control =          ohci_hub_control,
+        .hub_irq_enable =       ohci_rhsc_enable,
 #ifdef  CONFIG_PM
         .bus_suspend =          ohci_bus_suspend,
         .bus_resume =           ohci_bus_resume,
diff --git a/drivers/usb/host/ohci-sh.c b/drivers/usb/host/ohci-sh.c
index 60f03cc7ec4f..e7ee607278fe 100644
--- a/drivers/usb/host/ohci-sh.c
+++ b/drivers/usb/host/ohci-sh.c
@@ -68,6 +68,7 @@ static const struct hc_driver ohci_sh_hc_driver = {
          */
         .hub_status_data =      ohci_hub_status_data,
         .hub_control =          ohci_hub_control,
+        .hub_irq_enable =       ohci_rhsc_enable,
 #ifdef  CONFIG_PM
         .bus_suspend =          ohci_bus_suspend,
         .bus_resume =           ohci_bus_resume,
diff --git a/drivers/usb/host/ohci-sm501.c b/drivers/usb/host/ohci-sm501.c
index e899a77dfb83..e610698c6b60 100644
--- a/drivers/usb/host/ohci-sm501.c
+++ b/drivers/usb/host/ohci-sm501.c
@@ -75,6 +75,7 @@ static const struct hc_driver ohci_sm501_hc_driver = {
          */
         .hub_status_data =      ohci_hub_status_data,
         .hub_control =          ohci_hub_control,
+        .hub_irq_enable =       ohci_rhsc_enable,
 #ifdef  CONFIG_PM
         .bus_suspend =          ohci_bus_suspend,
         .bus_resume =           ohci_bus_resume,
diff --git a/drivers/usb/host/ohci-ssb.c b/drivers/usb/host/ohci-ssb.c
index c4265caec780..7275186db315 100644
--- a/drivers/usb/host/ohci-ssb.c
+++ b/drivers/usb/host/ohci-ssb.c
@@ -81,6 +81,7 @@ static const struct hc_driver ssb_ohci_hc_driver = {
 
         .hub_status_data        = ohci_hub_status_data,
         .hub_control            = ohci_hub_control,
+        .hub_irq_enable         = ohci_rhsc_enable,
 #ifdef  CONFIG_PM
         .bus_suspend            = ohci_bus_suspend,
         .bus_resume             = ohci_bus_resume,
diff --git a/drivers/usb/host/u132-hcd.c b/drivers/usb/host/u132-hcd.c
index f29307405bb3..9b6323f768b2 100644
--- a/drivers/usb/host/u132-hcd.c
+++ b/drivers/usb/host/u132-hcd.c
@@ -2934,6 +2934,16 @@ static int u132_start_port_reset(struct usb_hcd *hcd, unsigned port_num)
                 return 0;
 }
 
+static void u132_hub_irq_enable(struct usb_hcd *hcd)
+{
+        struct u132 *u132 = hcd_to_u132(hcd);
+        if (u132->going > 1) {
+                dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
+                        , u132->going);
+        } else if (u132->going > 0)
+                dev_err(&u132->platform_dev->dev, "device is being removed\n");
+}
+
 
 #ifdef CONFIG_PM
 static int u132_bus_suspend(struct usb_hcd *hcd)
@@ -2985,6 +2995,7 @@ static struct hc_driver u132_hc_driver = {
         .bus_suspend = u132_bus_suspend,
         .bus_resume = u132_bus_resume,
         .start_port_reset = u132_start_port_reset,
+        .hub_irq_enable = u132_hub_irq_enable,
 };
 
 /*
diff --git a/drivers/usb/misc/sisusbvga/sisusb.c b/drivers/usb/misc/sisusbvga/sisusb.c
index cb7fa0eaf3ae..33182f4c2267 100644
--- a/drivers/usb/misc/sisusbvga/sisusb.c
+++ b/drivers/usb/misc/sisusbvga/sisusb.c
@@ -3264,8 +3264,6 @@ static void sisusb_disconnect(struct usb_interface *intf)
 
         /* decrement our usage count */
         kref_put(&sisusb->kref, sisusb_delete);
-
-        dev_info(&sisusb->sisusb_dev->dev, "Disconnected\n");
 }
 
 static struct usb_device_id sisusb_table [] = {
diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index 5234e7a3bd2c..0ff4a3971e45 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -637,6 +637,7 @@ static struct usb_device_id id_table_combined [] = {
         { USB_DEVICE(FTDI_VID, FTDI_OOCDLINK_PID),
                 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
         { USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID_USB60F) },
+        { USB_DEVICE(FTDI_VID, FTDI_REU_TINY_PID) },
         { },                                    /* Optional parameter entry */
         { }                                     /* Terminating entry */
 };
diff --git a/drivers/usb/serial/ftdi_sio.h b/drivers/usb/serial/ftdi_sio.h
index 06e0ecabb3eb..8302eca893ea 100644
--- a/drivers/usb/serial/ftdi_sio.h
+++ b/drivers/usb/serial/ftdi_sio.h
@@ -828,6 +828,9 @@
 /* Propox devices */
 #define FTDI_PROPOX_JTAGCABLEII_PID     0xD738
 
+/* Rig Expert Ukraine devices */
+#define FTDI_REU_TINY_PID               0xED22  /* RigExpert Tiny */
+
 /* Commands */
 #define FTDI_SIO_RESET          0 /* Reset the port */
 #define FTDI_SIO_MODEM_CTRL     1 /* Set the modem control register */
diff --git a/drivers/usb/serial/ipaq.c b/drivers/usb/serial/ipaq.c
index ea924dc48496..d9fb3768a2d7 100644
--- a/drivers/usb/serial/ipaq.c
+++ b/drivers/usb/serial/ipaq.c
@@ -570,7 +570,12 @@ static struct usb_serial_driver ipaq_device = {
         .description =          "PocketPC PDA",
         .usb_driver =           &ipaq_driver,
         .id_table =             ipaq_id_table,
-        .num_ports =            2,
+        /*
+         * some devices have an extra endpoint, which
+         * must be ignored as it would make the core
+         * create a second port which oopses when used
+         */
+        .num_ports =            1,
         .open =                 ipaq_open,
         .close =                ipaq_close,
         .attach =               ipaq_startup,
diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
index 43cfde83a93b..a73420dd052a 100644
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -306,6 +306,7 @@ static struct usb_device_id option_ids[] = {
         { USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_C100_1) },
         { USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_C100_2) },
         { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_PRODUCT_KPC680) },
+        { USB_DEVICE(QUALCOMM_VENDOR_ID, 0x6000)}, /* ZTE AC8700 */
         { USB_DEVICE(QUALCOMM_VENDOR_ID, 0x6613)}, /* Onda H600/ZTE MF330 */
         { USB_DEVICE(MAXON_VENDOR_ID, 0x6280) }, /* BP3-USB & BP3-EXT HSDPA */
         { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_UC864E) },
diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c
index 103195abd417..2a0dd1b50dc4 100644
--- a/drivers/usb/serial/pl2303.c
+++ b/drivers/usb/serial/pl2303.c
@@ -57,6 +57,7 @@ static struct usb_device_id id_table [] = {
         { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_PHAROS) },
         { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_ALDIGA) },
         { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_MMX) },
+        { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_GPRS) },
         { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID) },
         { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID_RSAQ5) },
         { USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_ID) },
diff --git a/drivers/usb/serial/pl2303.h b/drivers/usb/serial/pl2303.h
index cff160abb130..6ac3bbcf7a22 100644
--- a/drivers/usb/serial/pl2303.h
+++ b/drivers/usb/serial/pl2303.h
@@ -15,6 +15,7 @@
 #define PL2303_PRODUCT_ID_RSAQ3         0xaaa2
 #define PL2303_PRODUCT_ID_ALDIGA        0x0611
 #define PL2303_PRODUCT_ID_MMX           0x0612
+#define PL2303_PRODUCT_ID_GPRS          0x0609
 
 #define ATEN_VENDOR_ID          0x0557
 #define ATEN_VENDOR_ID2         0x0547
diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h
index 45fe3663fa7f..39a7c11795c4 100644
--- a/drivers/usb/storage/unusual_devs.h
+++ b/drivers/usb/storage/unusual_devs.h
@@ -402,11 +402,19 @@ UNUSUAL_DEV(  0x04a5, 0x3010, 0x0100, 0x0100,
                 US_FL_IGNORE_RESIDUE ),
 
 #ifdef CONFIG_USB_STORAGE_CYPRESS_ATACB
+/* CY7C68300 : support atacb */
 UNUSUAL_DEV(  0x04b4, 0x6830, 0x0000, 0x9999,
                 "Cypress",
                 "Cypress AT2LP",
                 US_SC_CYP_ATACB, US_PR_DEVICE, NULL,
                 0),
+
+/* CY7C68310 : support atacb and atacb2 */
+UNUSUAL_DEV(  0x04b4, 0x6831, 0x0000, 0x9999,
+                "Cypress",
+                "Cypress ISD-300LP",
+                US_SC_CYP_ATACB, US_PR_DEVICE, NULL,
+                0),
 #endif
 
 /* Reported by Simon Levitt <simon@whattf.com>
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index 002b61b4f0f6..e0c5f96b273d 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -1825,12 +1825,13 @@ config FB_FSL_DIU
 
 config FB_W100
         tristate "W100 frame buffer support"
-        depends on FB && PXA_SHARPSL
+        depends on FB && ARCH_PXA
         select FB_CFB_FILLRECT
         select FB_CFB_COPYAREA
         select FB_CFB_IMAGEBLIT
         ---help---
           Frame buffer driver for the w100 as found on the Sharp SL-Cxx series.
+          It can also drive the w3220 chip found on iPAQ hx4700.
 
           This driver is also available as a module ( = code which can be
           inserted and removed from the running kernel whenever you want). The
diff --git a/drivers/video/fsl-diu-fb.c b/drivers/video/fsl-diu-fb.c
index 0a2785361ca3..712dabc6269f 100644
--- a/drivers/video/fsl-diu-fb.c
+++ b/drivers/video/fsl-diu-fb.c
@@ -286,7 +286,7 @@ static struct diu_pool pool;
  *      rheap and make the furture large allocation fail.
  */
 
-void *fsl_diu_alloc(unsigned long size, phys_addr_t *phys)
+static void *fsl_diu_alloc(unsigned long size, phys_addr_t *phys)
 {
         void *virt;
 
@@ -311,12 +311,12 @@ void *fsl_diu_alloc(unsigned long size, phys_addr_t *phys)
                 memset(virt, 0, size);
         }
 
-        pr_debug("rh virt=%p phys=%lx\n", virt, *phys);
+        pr_debug("rh virt=%p phys=%llx\n", virt, (unsigned long long)*phys);
 
         return virt;
 }
 
-void fsl_diu_free(void *p, unsigned long size)
+static void fsl_diu_free(void *p, unsigned long size)
 {
         pr_debug("p=%p size=%lu\n", p, size);
 
@@ -770,7 +770,7 @@ static int map_video_memory(struct fb_info *info)
         info->fix.smem_len = info->fix.line_length * info->var.yres_virtual;
         pr_debug("MAP_VIDEO_MEMORY: smem_len = %d\n", info->fix.smem_len);
         info->screen_base = fsl_diu_alloc(info->fix.smem_len, &phys);
-        if (info->screen_base == 0) {
+        if (info->screen_base == NULL) {
                 printk(KERN_ERR "Unable to allocate fb memory\n");
                 return -ENOMEM;
         }
@@ -788,7 +788,7 @@ static int map_video_memory(struct fb_info *info)
 static void unmap_video_memory(struct fb_info *info)
 {
         fsl_diu_free(info->screen_base, info->fix.smem_len);
-        info->screen_base = 0;
+        info->screen_base = NULL;
         info->fix.smem_start = 0;
         info->fix.smem_len = 0;
 }
@@ -1158,7 +1158,7 @@ static int init_fbinfo(struct fb_info *info)
         return 0;
 }
 
-static int install_fb(struct fb_info *info)
+static int __devinit install_fb(struct fb_info *info)
 {
         int rc;
         struct mfb_info *mfbi = info->par;
@@ -1233,7 +1233,7 @@ static int install_fb(struct fb_info *info)
         return 0;
 }
 
-static void __exit uninstall_fb(struct fb_info *info)
+static void uninstall_fb(struct fb_info *info)
 {
         struct mfb_info *mfbi = info->par;
 
@@ -1287,7 +1287,7 @@ static int request_irq_local(int irq)
         /* Read to clear the status */
         status = in_be32(&hw->int_status);
 
-        ret = request_irq(irq, fsl_diu_isr, 0, "diu", 0);
+        ret = request_irq(irq, fsl_diu_isr, 0, "diu", NULL);
         if (ret)
                 pr_info("Request diu IRQ failed.\n");
         else {
@@ -1312,7 +1312,7 @@ static void free_irq_local(int irq)
         /* Disable all LCDC interrupt */
         out_be32(&hw->int_mask, 0x1f);
 
-        free_irq(irq, 0);
+        free_irq(irq, NULL);
 }
 
 #ifdef CONFIG_PM
@@ -1324,7 +1324,7 @@ static int fsl_diu_suspend(struct of_device *ofdev, pm_message_t state)
 {
         struct fsl_diu_data *machine_data;
 
-        machine_data = dev_get_drvdata(&ofdev->dev);
+        machine_data = dev_get_drvdata(&dev->dev);
         disable_lcdc(machine_data->fsl_diu_info[0]);
 
         return 0;
@@ -1334,7 +1334,7 @@ static int fsl_diu_resume(struct of_device *ofdev)
 {
         struct fsl_diu_data *machine_data;
 
-        machine_data = dev_get_drvdata(&ofdev->dev);
+        machine_data = dev_get_drvdata(&dev->dev);
         enable_lcdc(machine_data->fsl_diu_info[0]);
 
         return 0;
@@ -1353,7 +1353,8 @@ static int allocate_buf(struct diu_addr *buf, u32 size, u32 bytes_align)
         dma_addr_t paddr = 0;
 
         ssize = size + bytes_align;
-        buf->vaddr = dma_alloc_coherent(0, ssize, &paddr, GFP_DMA | __GFP_ZERO);
+        buf->vaddr = dma_alloc_coherent(NULL, ssize, &paddr, GFP_DMA |
+                                                             __GFP_ZERO);
         if (!buf->vaddr)
                 return -ENOMEM;
 
@@ -1371,7 +1372,7 @@ static int allocate_buf(struct diu_addr *buf, u32 size, u32 bytes_align)
 
 static void free_buf(struct diu_addr *buf, u32 size, u32 bytes_align)
 {
-        dma_free_coherent(0, size + bytes_align,
+        dma_free_coherent(NULL, size + bytes_align,
                                 buf->vaddr, (buf->paddr - buf->offset));
         return;
 }
@@ -1411,7 +1412,7 @@ static ssize_t show_monitor(struct device *device,
         return diu_ops.show_monitor_port(machine_data->monitor_port, buf);
 }
 
-static int fsl_diu_probe(struct of_device *ofdev,
+static int __devinit fsl_diu_probe(struct of_device *ofdev,
         const struct of_device_id *match)
 {
         struct device_node *np = ofdev->node;
diff --git a/drivers/video/pxafb.c b/drivers/video/pxafb.c
index 7dcda187d9ba..fafe7db20d6d 100644
--- a/drivers/video/pxafb.c
+++ b/drivers/video/pxafb.c
@@ -1246,7 +1246,7 @@ static int pxafb_resume(struct platform_device *dev)
  *      cache.  Once this area is remapped, all virtual memory
  *      access to the video memory should occur at the new region.
  */
-static int __init pxafb_map_video_memory(struct pxafb_info *fbi)
+static int __devinit pxafb_map_video_memory(struct pxafb_info *fbi)
 {
         /*
          * We reserve one page for the palette, plus the size
@@ -1348,7 +1348,7 @@ decode_mode:
         pxafb_decode_mode_info(fbi, inf->modes, inf->num_modes);
 }
 
-static struct pxafb_info * __init pxafb_init_fbinfo(struct device *dev)
+static struct pxafb_info * __devinit pxafb_init_fbinfo(struct device *dev)
 {
         struct pxafb_info *fbi;
         void *addr;
@@ -1410,7 +1410,7 @@ static struct pxafb_info * __init pxafb_init_fbinfo(struct device *dev)
 }
 
 #ifdef CONFIG_FB_PXA_PARAMETERS
-static int __init parse_opt_mode(struct device *dev, const char *this_opt)
+static int __devinit parse_opt_mode(struct device *dev, const char *this_opt)
 {
         struct pxafb_mach_info *inf = dev->platform_data;
 
@@ -1469,7 +1469,7 @@ done:
         return 0;
 }
 
-static int __init parse_opt(struct device *dev, char *this_opt)
+static int __devinit parse_opt(struct device *dev, char *this_opt)
 {
         struct pxafb_mach_info *inf = dev->platform_data;
         struct pxafb_mode_info *mode = &inf->modes[0];
@@ -1567,7 +1567,7 @@ static int __init parse_opt(struct device *dev, char *this_opt)
         return 0;
 }
 
-static int __init pxafb_parse_options(struct device *dev, char *options)
+static int __devinit pxafb_parse_options(struct device *dev, char *options)
 {
         char *this_opt;
         int ret;
@@ -1588,8 +1588,8 @@ static int __init pxafb_parse_options(struct device *dev, char *options)
 
 static char g_options[256] __devinitdata = "";
 
-#ifndef CONFIG_MODULES
-static int __devinit pxafb_setup_options(void)
+#ifndef MODULE
+static int __init pxafb_setup_options(void)
 {
         char *options = NULL;
 
@@ -1613,7 +1613,7 @@ MODULE_PARM_DESC(options, "LCD parameters (see Documentation/fb/pxafb.txt)");
 #define pxafb_setup_options()           (0)
 #endif
 
-static int __init pxafb_probe(struct platform_device *dev)
+static int __devinit pxafb_probe(struct platform_device *dev)
 {
         struct pxafb_info *fbi;
         struct pxafb_mach_info *inf;
@@ -1685,14 +1685,14 @@ static int __init pxafb_probe(struct platform_device *dev)
         if (r == NULL) {
                 dev_err(&dev->dev, "no I/O memory resource defined\n");
                 ret = -ENODEV;
-                goto failed;
+                goto failed_fbi;
         }
 
         r = request_mem_region(r->start, r->end - r->start + 1, dev->name);
         if (r == NULL) {
                 dev_err(&dev->dev, "failed to request I/O memory\n");
                 ret = -EBUSY;
-                goto failed;
+                goto failed_fbi;
         }
 
         fbi->mmio_base = ioremap(r->start, r->end - r->start + 1);
@@ -1735,8 +1735,17 @@ static int __init pxafb_probe(struct platform_device *dev)
          * This makes sure that our colour bitfield
          * descriptors are correctly initialised.
          */
-        pxafb_check_var(&fbi->fb.var, &fbi->fb);
-        pxafb_set_par(&fbi->fb);
+        ret = pxafb_check_var(&fbi->fb.var, &fbi->fb);
+        if (ret) {
+                dev_err(&dev->dev, "failed to get suitable mode\n");
+                goto failed_free_irq;
+        }
+
+        ret = pxafb_set_par(&fbi->fb);
+        if (ret) {
+                dev_err(&dev->dev, "Failed to set parameters\n");
+                goto failed_free_irq;
+        }
 
         platform_set_drvdata(dev, fbi);
 
@@ -1744,7 +1753,7 @@ static int __init pxafb_probe(struct platform_device *dev)
         if (ret < 0) {
                 dev_err(&dev->dev,
                         "Failed to register framebuffer device: %d\n", ret);
-                goto failed_free_irq;
+                goto failed_free_cmap;
         }
 
 #ifdef CONFIG_CPU_FREQ
@@ -1763,18 +1772,23 @@ static int __init pxafb_probe(struct platform_device *dev)
 
         return 0;
 
+failed_free_cmap:
+        if (fbi->fb.cmap.len)
+                fb_dealloc_cmap(&fbi->fb.cmap);
 failed_free_irq:
         free_irq(irq, fbi);
-failed_free_res:
-        release_mem_region(r->start, r->end - r->start + 1);
-failed_free_io:
-        iounmap(fbi->mmio_base);
 failed_free_mem:
         dma_free_writecombine(&dev->dev, fbi->map_size,
                         fbi->map_cpu, fbi->map_dma);
-failed:
+failed_free_io:
+        iounmap(fbi->mmio_base);
+failed_free_res:
+        release_mem_region(r->start, r->end - r->start + 1);
+failed_fbi:
+        clk_put(fbi->clk);
         platform_set_drvdata(dev, NULL);
         kfree(fbi);
+failed:
         return ret;
 }
 
@@ -1787,7 +1801,7 @@ static struct platform_driver pxafb_driver = {
         },
 };
 
-static int __devinit pxafb_init(void)
+static int __init pxafb_init(void)
 {
         if (pxafb_setup_options())
                 return -EINVAL;
diff --git a/drivers/video/w100fb.c b/drivers/video/w100fb.c
index 30469bf906e5..d0674f1e3f10 100644
--- a/drivers/video/w100fb.c
+++ b/drivers/video/w100fb.c
@@ -1003,6 +1003,7 @@ static struct w100_pll_info xtal_14318000[] = {
 static struct w100_pll_info xtal_16000000[] = {
         /*freq     M   N_int    N_fac  tfgoal  lock_time */
         { 72,      1,   8,       0,     0xe0,        48}, /* tfgoal guessed */
+        { 80,      1,   9,       0,     0xe0,        13}, /* tfgoal guessed */
         { 95,      1,   10,      7,     0xe0,        38}, /* tfgoal guessed */
         { 96,      1,   11,      0,     0xe0,        36}, /* tfgoal guessed */
         {  0,      0,   0,       0,        0,         0},
diff --git a/drivers/video/xen-fbfront.c b/drivers/video/xen-fbfront.c
index 619a6f8d65a2..47ed39b52f9c 100644
--- a/drivers/video/xen-fbfront.c
+++ b/drivers/video/xen-fbfront.c
@@ -18,6 +18,7 @@
  * frame buffer.
  */
 
+#include <linux/console.h>
 #include <linux/kernel.h>
 #include <linux/errno.h>
 #include <linux/fb.h>
@@ -42,37 +43,68 @@ struct xenfb_info {
         struct xenfb_page       *page;
         unsigned long           *mfns;
         int                     update_wanted; /* XENFB_TYPE_UPDATE wanted */
+        int                     feature_resize; /* XENFB_TYPE_RESIZE ok */
+        struct xenfb_resize     resize;         /* protected by resize_lock */
+        int                     resize_dpy;     /* ditto */
+        spinlock_t              resize_lock;
 
         struct xenbus_device    *xbdev;
 };
 
-static u32 xenfb_mem_len = XENFB_WIDTH * XENFB_HEIGHT * XENFB_DEPTH / 8;
+#define XENFB_DEFAULT_FB_LEN (XENFB_WIDTH * XENFB_HEIGHT * XENFB_DEPTH / 8)
 
+enum { KPARAM_MEM, KPARAM_WIDTH, KPARAM_HEIGHT, KPARAM_CNT };
+static int video[KPARAM_CNT] = { 2, XENFB_WIDTH, XENFB_HEIGHT };
+module_param_array(video, int, NULL, 0);
+MODULE_PARM_DESC(video,
+        "Video memory size in MB, width, height in pixels (default 2,800,600)");
+
+static void xenfb_make_preferred_console(void);
 static int xenfb_remove(struct xenbus_device *);
-static void xenfb_init_shared_page(struct xenfb_info *);
+static void xenfb_init_shared_page(struct xenfb_info *, struct fb_info *);
 static int xenfb_connect_backend(struct xenbus_device *, struct xenfb_info *);
 static void xenfb_disconnect_backend(struct xenfb_info *);
 
+static void xenfb_send_event(struct xenfb_info *info,
+                             union xenfb_out_event *event)
+{
+        u32 prod;
+
+        prod = info->page->out_prod;
+        /* caller ensures !xenfb_queue_full() */
+        mb();                   /* ensure ring space available */
+        XENFB_OUT_RING_REF(info->page, prod) = *event;
+        wmb();                  /* ensure ring contents visible */
+        info->page->out_prod = prod + 1;
+
+        notify_remote_via_irq(info->irq);
+}
+
 static void xenfb_do_update(struct xenfb_info *info,
                             int x, int y, int w, int h)
 {
         union xenfb_out_event event;
-        u32 prod;
 
+        memset(&event, 0, sizeof(event));
         event.type = XENFB_TYPE_UPDATE;
         event.update.x = x;
         event.update.y = y;
         event.update.width = w;
         event.update.height = h;
 
-        prod = info->page->out_prod;
         /* caller ensures !xenfb_queue_full() */
-        mb();                   /* ensure ring space available */
-        XENFB_OUT_RING_REF(info->page, prod) = event;
-        wmb();                  /* ensure ring contents visible */
-        info->page->out_prod = prod + 1;
+        xenfb_send_event(info, &event);
+}
 
-        notify_remote_via_irq(info->irq);
+static void xenfb_do_resize(struct xenfb_info *info)
+{
+        union xenfb_out_event event;
+
+        memset(&event, 0, sizeof(event));
+        event.resize = info->resize;
+
+        /* caller ensures !xenfb_queue_full() */
+        xenfb_send_event(info, &event);
 }
 
 static int xenfb_queue_full(struct xenfb_info *info)
@@ -84,12 +116,28 @@ static int xenfb_queue_full(struct xenfb_info *info)
         return prod - cons == XENFB_OUT_RING_LEN;
 }
 
+static void xenfb_handle_resize_dpy(struct xenfb_info *info)
+{
+        unsigned long flags;
+
+        spin_lock_irqsave(&info->resize_lock, flags);
+        if (info->resize_dpy) {
+                if (!xenfb_queue_full(info)) {
+                        info->resize_dpy = 0;
+                        xenfb_do_resize(info);
+                }
+        }
+        spin_unlock_irqrestore(&info->resize_lock, flags);
+}
+
 static void xenfb_refresh(struct xenfb_info *info,
                           int x1, int y1, int w, int h)
 {
         unsigned long flags;
-        int y2 = y1 + h - 1;
         int x2 = x1 + w - 1;
+        int y2 = y1 + h - 1;
+
+        xenfb_handle_resize_dpy(info);
 
         if (!info->update_wanted)
                 return;
@@ -222,6 +270,57 @@ static ssize_t xenfb_write(struct fb_info *p, const char __user *buf,
         return res;
 }
 
+static int
+xenfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
+{
+        struct xenfb_info *xenfb_info;
+        int required_mem_len;
+
+        xenfb_info = info->par;
+
+        if (!xenfb_info->feature_resize) {
+                if (var->xres == video[KPARAM_WIDTH] &&
+                    var->yres == video[KPARAM_HEIGHT] &&
+                    var->bits_per_pixel == xenfb_info->page->depth) {
+                        return 0;
+                }
+                return -EINVAL;
+        }
+
+        /* Can't resize past initial width and height */
+        if (var->xres > video[KPARAM_WIDTH] || var->yres > video[KPARAM_HEIGHT])
+                return -EINVAL;
+
+        required_mem_len = var->xres * var->yres * xenfb_info->page->depth / 8;
+        if (var->bits_per_pixel == xenfb_info->page->depth &&
+            var->xres <= info->fix.line_length / (XENFB_DEPTH / 8) &&
+            required_mem_len <= info->fix.smem_len) {
+                var->xres_virtual = var->xres;
+                var->yres_virtual = var->yres;
+                return 0;
+        }
+        return -EINVAL;
+}
+
+static int xenfb_set_par(struct fb_info *info)
+{
+        struct xenfb_info *xenfb_info;
+        unsigned long flags;
+
+        xenfb_info = info->par;
+
+        spin_lock_irqsave(&xenfb_info->resize_lock, flags);
+        xenfb_info->resize.type = XENFB_TYPE_RESIZE;
+        xenfb_info->resize.width = info->var.xres;
+        xenfb_info->resize.height = info->var.yres;
+        xenfb_info->resize.stride = info->fix.line_length;
+        xenfb_info->resize.depth = info->var.bits_per_pixel;
+        xenfb_info->resize.offset = 0;
+        xenfb_info->resize_dpy = 1;
+        spin_unlock_irqrestore(&xenfb_info->resize_lock, flags);
+        return 0;
+}
+
 static struct fb_ops xenfb_fb_ops = {
         .owner          = THIS_MODULE,
         .fb_read        = fb_sys_read,
@@ -230,6 +329,8 @@ static struct fb_ops xenfb_fb_ops = {
         .fb_fillrect    = xenfb_fillrect,
         .fb_copyarea    = xenfb_copyarea,
         .fb_imageblit   = xenfb_imageblit,
+        .fb_check_var   = xenfb_check_var,
+        .fb_set_par     = xenfb_set_par,
 };
 
 static irqreturn_t xenfb_event_handler(int rq, void *dev_id)
@@ -258,6 +359,8 @@ static int __devinit xenfb_probe(struct xenbus_device *dev,
 {
         struct xenfb_info *info;
         struct fb_info *fb_info;
+        int fb_size;
+        int val;
         int ret;
 
         info = kzalloc(sizeof(*info), GFP_KERNEL);
@@ -265,18 +368,35 @@ static int __devinit xenfb_probe(struct xenbus_device *dev,
                 xenbus_dev_fatal(dev, -ENOMEM, "allocating info structure");
                 return -ENOMEM;
         }
+
+        /* Limit kernel param videoram amount to what is in xenstore */
+        if (xenbus_scanf(XBT_NIL, dev->otherend, "videoram", "%d", &val) == 1) {
+                if (val < video[KPARAM_MEM])
+                        video[KPARAM_MEM] = val;
+        }
+
+        /* If requested res does not fit in available memory, use default */
+        fb_size = video[KPARAM_MEM] * 1024 * 1024;
+        if (video[KPARAM_WIDTH] * video[KPARAM_HEIGHT] * XENFB_DEPTH / 8
+            > fb_size) {
+                video[KPARAM_WIDTH] = XENFB_WIDTH;
+                video[KPARAM_HEIGHT] = XENFB_HEIGHT;
+                fb_size = XENFB_DEFAULT_FB_LEN;
+        }
+
         dev->dev.driver_data = info;
         info->xbdev = dev;
         info->irq = -1;
         info->x1 = info->y1 = INT_MAX;
         spin_lock_init(&info->dirty_lock);
+        spin_lock_init(&info->resize_lock);
 
-        info->fb = vmalloc(xenfb_mem_len);
+        info->fb = vmalloc(fb_size);
         if (info->fb == NULL)
                 goto error_nomem;
-        memset(info->fb, 0, xenfb_mem_len);
+        memset(info->fb, 0, fb_size);
 
-        info->nr_pages = (xenfb_mem_len + PAGE_SIZE - 1) >> PAGE_SHIFT;
+        info->nr_pages = (fb_size + PAGE_SIZE - 1) >> PAGE_SHIFT;
 
         info->mfns = vmalloc(sizeof(unsigned long) * info->nr_pages);
         if (!info->mfns)
@@ -287,8 +407,6 @@ static int __devinit xenfb_probe(struct xenbus_device *dev,
         if (!info->page)
                 goto error_nomem;
 
-        xenfb_init_shared_page(info);
-
         /* abusing framebuffer_alloc() to allocate pseudo_palette */
         fb_info = framebuffer_alloc(sizeof(u32) * 256, NULL);
         if (fb_info == NULL)
@@ -301,9 +419,9 @@ static int __devinit xenfb_probe(struct xenbus_device *dev,
         fb_info->screen_base = info->fb;
 
         fb_info->fbops = &xenfb_fb_ops;
-        fb_info->var.xres_virtual = fb_info->var.xres = info->page->width;
-        fb_info->var.yres_virtual = fb_info->var.yres = info->page->height;
-        fb_info->var.bits_per_pixel = info->page->depth;
+        fb_info->var.xres_virtual = fb_info->var.xres = video[KPARAM_WIDTH];
+        fb_info->var.yres_virtual = fb_info->var.yres = video[KPARAM_HEIGHT];
+        fb_info->var.bits_per_pixel = XENFB_DEPTH;
 
         fb_info->var.red = (struct fb_bitfield){16, 8, 0};
         fb_info->var.green = (struct fb_bitfield){8, 8, 0};
@@ -315,9 +433,9 @@ static int __devinit xenfb_probe(struct xenbus_device *dev,
         fb_info->var.vmode = FB_VMODE_NONINTERLACED;
 
         fb_info->fix.visual = FB_VISUAL_TRUECOLOR;
-        fb_info->fix.line_length = info->page->line_length;
+        fb_info->fix.line_length = fb_info->var.xres * XENFB_DEPTH / 8;
         fb_info->fix.smem_start = 0;
-        fb_info->fix.smem_len = xenfb_mem_len;
+        fb_info->fix.smem_len = fb_size;
         strcpy(fb_info->fix.id, "xen");
         fb_info->fix.type = FB_TYPE_PACKED_PIXELS;
         fb_info->fix.accel = FB_ACCEL_NONE;
@@ -334,6 +452,8 @@ static int __devinit xenfb_probe(struct xenbus_device *dev,
         fb_info->fbdefio = &xenfb_defio;
         fb_deferred_io_init(fb_info);
 
+        xenfb_init_shared_page(info, fb_info);
+
         ret = register_framebuffer(fb_info);
         if (ret) {
                 fb_deferred_io_cleanup(fb_info);
@@ -348,6 +468,7 @@ static int __devinit xenfb_probe(struct xenbus_device *dev,
         if (ret < 0)
                 goto error;
 
+        xenfb_make_preferred_console();
         return 0;
 
  error_nomem:
@@ -358,12 +479,34 @@ static int __devinit xenfb_probe(struct xenbus_device *dev,
         return ret;
 }
 
+static __devinit void
+xenfb_make_preferred_console(void)
+{
+        struct console *c;
+
+        if (console_set_on_cmdline)
+                return;
+
+        acquire_console_sem();
+        for (c = console_drivers; c; c = c->next) {
+                if (!strcmp(c->name, "tty") && c->index == 0)
+                        break;
+        }
+        release_console_sem();
+        if (c) {
+                unregister_console(c);
+                c->flags |= CON_CONSDEV;
+                c->flags &= ~CON_PRINTBUFFER; /* don't print again */
+                register_console(c);
+        }
+}
+
 static int xenfb_resume(struct xenbus_device *dev)
 {
         struct xenfb_info *info = dev->dev.driver_data;
 
         xenfb_disconnect_backend(info);
-        xenfb_init_shared_page(info);
+        xenfb_init_shared_page(info, info->fb_info);
         return xenfb_connect_backend(dev, info);
 }
 
@@ -391,20 +534,23 @@ static unsigned long vmalloc_to_mfn(void *address)
         return pfn_to_mfn(vmalloc_to_pfn(address));
 }
 
-static void xenfb_init_shared_page(struct xenfb_info *info)
+static void xenfb_init_shared_page(struct xenfb_info *info,
+                                   struct fb_info *fb_info)
 {
         int i;
+        int epd = PAGE_SIZE / sizeof(info->mfns[0]);
 
         for (i = 0; i < info->nr_pages; i++)
                 info->mfns[i] = vmalloc_to_mfn(info->fb + i * PAGE_SIZE);
 
-        info->page->pd[0] = vmalloc_to_mfn(info->mfns);
-        info->page->pd[1] = 0;
-        info->page->width = XENFB_WIDTH;
-        info->page->height = XENFB_HEIGHT;
-        info->page->depth = XENFB_DEPTH;
-        info->page->line_length = (info->page->depth / 8) * info->page->width;
-        info->page->mem_length = xenfb_mem_len;
+        for (i = 0; i * epd < info->nr_pages; i++)
+                info->page->pd[i] = vmalloc_to_mfn(&info->mfns[i * epd]);
+
+        info->page->width = fb_info->var.xres;
+        info->page->height = fb_info->var.yres;
+        info->page->depth = fb_info->var.bits_per_pixel;
+        info->page->line_length = fb_info->fix.line_length;
+        info->page->mem_length = fb_info->fix.smem_len;
         info->page->in_cons = info->page->in_prod = 0;
         info->page->out_cons = info->page->out_prod = 0;
 }
@@ -504,6 +650,11 @@ InitWait:
                         val = 0;
                 if (val)
                         info->update_wanted = 1;
+
+                if (xenbus_scanf(XBT_NIL, dev->otherend,
+                                 "feature-resize", "%d", &val) < 0)
+                        val = 0;
+                info->feature_resize = val;
                 break;
 
         case XenbusStateClosing:
@@ -547,4 +698,6 @@ static void __exit xenfb_cleanup(void)
 module_init(xenfb_init);
 module_exit(xenfb_cleanup);
 
+MODULE_DESCRIPTION("Xen virtual framebuffer device frontend");
 MODULE_LICENSE("GPL");
+MODULE_ALIAS("xen:vfb");
diff --git a/drivers/xen/Makefile b/drivers/xen/Makefile
index 37af04f1ffd9..363286c54290 100644
--- a/drivers/xen/Makefile
+++ b/drivers/xen/Makefile
@@ -1,4 +1,4 @@
-obj-y   += grant-table.o features.o events.o
+obj-y   += grant-table.o features.o events.o manage.o
 obj-y   += xenbus/
 obj-$(CONFIG_XEN_XENCOMM)       += xencomm.o
 obj-$(CONFIG_XEN_BALLOON)       += balloon.o
diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c
index ab25ba6cbbb9..591bc29b55f5 100644
--- a/drivers/xen/balloon.c
+++ b/drivers/xen/balloon.c
@@ -225,7 +225,7 @@ static int increase_reservation(unsigned long nr_pages)
                 page = balloon_next_page(page);
         }
 
-        reservation.extent_start = (unsigned long)frame_list;
+        set_xen_guest_handle(reservation.extent_start, frame_list);
         reservation.nr_extents   = nr_pages;
         rc = HYPERVISOR_memory_op(
                 XENMEM_populate_physmap, &reservation);
@@ -321,7 +321,7 @@ static int decrease_reservation(unsigned long nr_pages)
                 balloon_append(pfn_to_page(pfn));
         }
 
-        reservation.extent_start = (unsigned long)frame_list;
+        set_xen_guest_handle(reservation.extent_start, frame_list);
         reservation.nr_extents   = nr_pages;
         ret = HYPERVISOR_memory_op(XENMEM_decrease_reservation, &reservation);
         BUG_ON(ret != nr_pages);
@@ -368,7 +368,7 @@ static void balloon_process(struct work_struct *work)
 }
 
 /* Resets the Xen limit, sets new target, and kicks off processing. */
-void balloon_set_new_target(unsigned long target)
+static void balloon_set_new_target(unsigned long target)
 {
         /* No need for lock. Not read-modify-write updates. */
         balloon_stats.hard_limit   = ~0UL;
@@ -483,7 +483,7 @@ static int dealloc_pte_fn(
                 .extent_order = 0,
                 .domid        = DOMID_SELF
         };
-        reservation.extent_start = (unsigned long)&mfn;
+        set_xen_guest_handle(reservation.extent_start, &mfn);
         set_pte_at(&init_mm, addr, pte, __pte_ma(0ull));
         set_phys_to_machine(__pa(addr) >> PAGE_SHIFT, INVALID_P2M_ENTRY);
         ret = HYPERVISOR_memory_op(XENMEM_decrease_reservation, &reservation);
@@ -519,7 +519,7 @@ static struct page **alloc_empty_pages_and_pagevec(int nr_pages)
                                 .extent_order = 0,
                                 .domid        = DOMID_SELF
                         };
-                        reservation.extent_start = (unsigned long)&gmfn;
+                        set_xen_guest_handle(reservation.extent_start, &gmfn);
                         ret = HYPERVISOR_memory_op(XENMEM_decrease_reservation,
                                                    &reservation);
                         if (ret == 1)
diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index 76e5b7386af9..332dd63750a0 100644
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -355,7 +355,7 @@ static void unbind_from_irq(unsigned int irq)
 
         spin_lock(&irq_mapping_update_lock);
 
-        if (VALID_EVTCHN(evtchn) && (--irq_bindcount[irq] == 0)) {
+        if ((--irq_bindcount[irq] == 0) && VALID_EVTCHN(evtchn)) {
                 close.port = evtchn;
                 if (HYPERVISOR_event_channel_op(EVTCHNOP_close, &close) != 0)
                         BUG();
@@ -375,7 +375,7 @@ static void unbind_from_irq(unsigned int irq)
                 evtchn_to_irq[evtchn] = -1;
                 irq_info[irq] = IRQ_UNBOUND;
 
-                dynamic_irq_init(irq);
+                dynamic_irq_cleanup(irq);
         }
 
         spin_unlock(&irq_mapping_update_lock);
@@ -557,6 +557,33 @@ out:
         put_cpu();
 }
 
+/* Rebind a new event channel to an existing irq. */
+void rebind_evtchn_irq(int evtchn, int irq)
+{
+        /* Make sure the irq is masked, since the new event channel
+           will also be masked. */
+        disable_irq(irq);
+
+        spin_lock(&irq_mapping_update_lock);
+
+        /* After resume the irq<->evtchn mappings are all cleared out */
+        BUG_ON(evtchn_to_irq[evtchn] != -1);
+        /* Expect irq to have been bound before,
+           so the bindcount should be non-0 */
+        BUG_ON(irq_bindcount[irq] == 0);
+
+        evtchn_to_irq[evtchn] = irq;
+        irq_info[irq] = mk_irq_info(IRQT_EVTCHN, 0, evtchn);
+
+        spin_unlock(&irq_mapping_update_lock);
+
+        /* new event channels are always bound to cpu 0 */
+        irq_set_affinity(irq, cpumask_of_cpu(0));
+
+        /* Unmask the event channel. */
+        enable_irq(irq);
+}
+
 /* Rebind an evtchn so that it gets delivered to a specific cpu */
 static void rebind_irq_to_cpu(unsigned irq, unsigned tcpu)
 {
@@ -647,6 +674,89 @@ static int retrigger_dynirq(unsigned int irq)
         return ret;
 }
 
+static void restore_cpu_virqs(unsigned int cpu)
+{
+        struct evtchn_bind_virq bind_virq;
+        int virq, irq, evtchn;
+
+        for (virq = 0; virq < NR_VIRQS; virq++) {
+                if ((irq = per_cpu(virq_to_irq, cpu)[virq]) == -1)
+                        continue;
+
+                BUG_ON(irq_info[irq].type != IRQT_VIRQ);
+                BUG_ON(irq_info[irq].index != virq);
+
+                /* Get a new binding from Xen. */
+                bind_virq.virq = virq;
+                bind_virq.vcpu = cpu;
+                if (HYPERVISOR_event_channel_op(EVTCHNOP_bind_virq,
+                                                &bind_virq) != 0)
+                        BUG();
+                evtchn = bind_virq.port;
+
+                /* Record the new mapping. */
+                evtchn_to_irq[evtchn] = irq;
+                irq_info[irq] = mk_irq_info(IRQT_VIRQ, virq, evtchn);
+                bind_evtchn_to_cpu(evtchn, cpu);
+
+                /* Ready for use. */
+                unmask_evtchn(evtchn);
+        }
+}
+
+static void restore_cpu_ipis(unsigned int cpu)
+{
+        struct evtchn_bind_ipi bind_ipi;
+        int ipi, irq, evtchn;
+
+        for (ipi = 0; ipi < XEN_NR_IPIS; ipi++) {
+                if ((irq = per_cpu(ipi_to_irq, cpu)[ipi]) == -1)
+                        continue;
+
+                BUG_ON(irq_info[irq].type != IRQT_IPI);
+                BUG_ON(irq_info[irq].index != ipi);
+
+                /* Get a new binding from Xen. */
+                bind_ipi.vcpu = cpu;
+                if (HYPERVISOR_event_channel_op(EVTCHNOP_bind_ipi,
+                                                &bind_ipi) != 0)
+                        BUG();
+                evtchn = bind_ipi.port;
+
+                /* Record the new mapping. */
+                evtchn_to_irq[evtchn] = irq;
+                irq_info[irq] = mk_irq_info(IRQT_IPI, ipi, evtchn);
+                bind_evtchn_to_cpu(evtchn, cpu);
+
+                /* Ready for use. */
+                unmask_evtchn(evtchn);
+
+        }
+}
+
+void xen_irq_resume(void)
+{
+        unsigned int cpu, irq, evtchn;
+
+        init_evtchn_cpu_bindings();
+
+        /* New event-channel space is not 'live' yet. */
+        for (evtchn = 0; evtchn < NR_EVENT_CHANNELS; evtchn++)
+                mask_evtchn(evtchn);
+
+        /* No IRQ <-> event-channel mappings. */
+        for (irq = 0; irq < NR_IRQS; irq++)
+                irq_info[irq].evtchn = 0; /* zap event-channel binding */
+
+        for (evtchn = 0; evtchn < NR_EVENT_CHANNELS; evtchn++)
+                evtchn_to_irq[evtchn] = -1;
+
+        for_each_possible_cpu(cpu) {
+                restore_cpu_virqs(cpu);
+                restore_cpu_ipis(cpu);
+        }
+}
+
 static struct irq_chip xen_dynamic_chip __read_mostly = {
         .name           = "xen-dyn",
         .mask           = disable_dynirq,
diff --git a/drivers/xen/grant-table.c b/drivers/xen/grant-table.c
index 52b6b41b909d..e9e11168616a 100644
--- a/drivers/xen/grant-table.c
+++ b/drivers/xen/grant-table.c
@@ -471,14 +471,14 @@ static int gnttab_map(unsigned int start_idx, unsigned int end_idx)
         return 0;
 }
 
-static int gnttab_resume(void)
+int gnttab_resume(void)
 {
         if (max_nr_grant_frames() < nr_grant_frames)
                 return -ENOSYS;
         return gnttab_map(0, nr_grant_frames - 1);
 }
 
-static int gnttab_suspend(void)
+int gnttab_suspend(void)
 {
         arch_gnttab_unmap_shared(shared, nr_grant_frames);
         return 0;
diff --git a/drivers/xen/manage.c b/drivers/xen/manage.c
new file mode 100644
index 000000000000..5b546e365f00
--- /dev/null
+++ b/drivers/xen/manage.c
@@ -0,0 +1,252 @@
+/*
+ * Handle extern requests for shutdown, reboot and sysrq
+ */
+#include <linux/kernel.h>
+#include <linux/err.h>
+#include <linux/reboot.h>
+#include <linux/sysrq.h>
+#include <linux/stop_machine.h>
+#include <linux/freezer.h>
+
+#include <xen/xenbus.h>
+#include <xen/grant_table.h>
+#include <xen/events.h>
+#include <xen/hvc-console.h>
+#include <xen/xen-ops.h>
+
+#include <asm/xen/hypercall.h>
+#include <asm/xen/page.h>
+
+enum shutdown_state {
+        SHUTDOWN_INVALID = -1,
+        SHUTDOWN_POWEROFF = 0,
+        SHUTDOWN_SUSPEND = 2,
+        /* Code 3 is SHUTDOWN_CRASH, which we don't use because the domain can only
+           report a crash, not be instructed to crash!
+           HALT is the same as POWEROFF, as far as we're concerned.  The tools use
+           the distinction when we return the reason code to them.  */
+         SHUTDOWN_HALT = 4,
+};
+
+/* Ignore multiple shutdown requests. */
+static enum shutdown_state shutting_down = SHUTDOWN_INVALID;
+
+#ifdef CONFIG_PM_SLEEP
+static int xen_suspend(void *data)
+{
+        int *cancelled = data;
+        int err;
+
+        BUG_ON(!irqs_disabled());
+
+        load_cr3(swapper_pg_dir);
+
+        err = device_power_down(PMSG_SUSPEND);
+        if (err) {
+                printk(KERN_ERR "xen_suspend: device_power_down failed: %d\n",
+                       err);
+                return err;
+        }
+
+        xen_mm_pin_all();
+        gnttab_suspend();
+        xen_pre_suspend();
+
+        /*
+         * This hypercall returns 1 if suspend was cancelled
+         * or the domain was merely checkpointed, and 0 if it
+         * is resuming in a new domain.
+         */
+        *cancelled = HYPERVISOR_suspend(virt_to_mfn(xen_start_info));
+
+        xen_post_suspend(*cancelled);
+        gnttab_resume();
+        xen_mm_unpin_all();
+
+        device_power_up();
+
+        if (!*cancelled) {
+                xen_irq_resume();
+                xen_console_resume();
+        }
+
+        return 0;
+}
+
+static void do_suspend(void)
+{
+        int err;
+        int cancelled = 1;
+
+        shutting_down = SHUTDOWN_SUSPEND;
+
+#ifdef CONFIG_PREEMPT
+        /* If the kernel is preemptible, we need to freeze all the processes
+           to prevent them from being in the middle of a pagetable update
+           during suspend. */
+        err = freeze_processes();
+        if (err) {
+                printk(KERN_ERR "xen suspend: freeze failed %d\n", err);
+                return;
+        }
+#endif
+
+        err = device_suspend(PMSG_SUSPEND);
+        if (err) {
+                printk(KERN_ERR "xen suspend: device_suspend %d\n", err);
+                goto out;
+        }
+
+        printk("suspending xenbus...\n");
+        /* XXX use normal device tree? */
+        xenbus_suspend();
+
+        err = stop_machine_run(xen_suspend, &cancelled, 0);
+        if (err) {
+                printk(KERN_ERR "failed to start xen_suspend: %d\n", err);
+                goto out;
+        }
+
+        if (!cancelled)
+                xenbus_resume();
+        else
+                xenbus_suspend_cancel();
+
+        device_resume();
+
+        /* Make sure timer events get retriggered on all CPUs */
+        clock_was_set();
+out:
+#ifdef CONFIG_PREEMPT
+        thaw_processes();
+#endif
+        shutting_down = SHUTDOWN_INVALID;
+}
+#endif  /* CONFIG_PM_SLEEP */
+
+static void shutdown_handler(struct xenbus_watch *watch,
+                             const char **vec, unsigned int len)
+{
+        char *str;
+        struct xenbus_transaction xbt;
+        int err;
+
+        if (shutting_down != SHUTDOWN_INVALID)
+                return;
+
+ again:
+        err = xenbus_transaction_start(&xbt);
+        if (err)
+                return;
+
+        str = (char *)xenbus_read(xbt, "control", "shutdown", NULL);
+        /* Ignore read errors and empty reads. */
+        if (XENBUS_IS_ERR_READ(str)) {
+                xenbus_transaction_end(xbt, 1);
+                return;
+        }
+
+        xenbus_write(xbt, "control", "shutdown", "");
+
+        err = xenbus_transaction_end(xbt, 0);
+        if (err == -EAGAIN) {
+                kfree(str);
+                goto again;
+        }
+
+        if (strcmp(str, "poweroff") == 0 ||
+            strcmp(str, "halt") == 0) {
+                shutting_down = SHUTDOWN_POWEROFF;
+                orderly_poweroff(false);
+        } else if (strcmp(str, "reboot") == 0) {
+                shutting_down = SHUTDOWN_POWEROFF; /* ? */
+                ctrl_alt_del();
+#ifdef CONFIG_PM_SLEEP
+        } else if (strcmp(str, "suspend") == 0) {
+                do_suspend();
+#endif
+        } else {
+                printk(KERN_INFO "Ignoring shutdown request: %s\n", str);
+                shutting_down = SHUTDOWN_INVALID;
+        }
+
+        kfree(str);
+}
+
+static void sysrq_handler(struct xenbus_watch *watch, const char **vec,
+                          unsigned int len)
+{
+        char sysrq_key = '\0';
+        struct xenbus_transaction xbt;
+        int err;
+
+ again:
+        err = xenbus_transaction_start(&xbt);
+        if (err)
+                return;
+        if (!xenbus_scanf(xbt, "control", "sysrq", "%c", &sysrq_key)) {
+                printk(KERN_ERR "Unable to read sysrq code in "
+                       "control/sysrq\n");
+                xenbus_transaction_end(xbt, 1);
+                return;
+        }
+
+        if (sysrq_key != '\0')
+                xenbus_printf(xbt, "control", "sysrq", "%c", '\0');
+
+        err = xenbus_transaction_end(xbt, 0);
+        if (err == -EAGAIN)
+                goto again;
+
+        if (sysrq_key != '\0')
+                handle_sysrq(sysrq_key, NULL);
+}
+
+static struct xenbus_watch shutdown_watch = {
+        .node = "control/shutdown",
+        .callback = shutdown_handler
+};
+
+static struct xenbus_watch sysrq_watch = {
+        .node = "control/sysrq",
+        .callback = sysrq_handler
+};
+
+static int setup_shutdown_watcher(void)
+{
+        int err;
+
+        err = register_xenbus_watch(&shutdown_watch);
+        if (err) {
+                printk(KERN_ERR "Failed to set shutdown watcher\n");
+                return err;
+        }
+
+        err = register_xenbus_watch(&sysrq_watch);
+        if (err) {
+                printk(KERN_ERR "Failed to set sysrq watcher\n");
+                return err;
+        }
+
+        return 0;
+}
+
+static int shutdown_event(struct notifier_block *notifier,
+                          unsigned long event,
+                          void *data)
+{
+        setup_shutdown_watcher();
+        return NOTIFY_DONE;
+}
+
+static int __init setup_shutdown_event(void)
+{
+        static struct notifier_block xenstore_notifier = {
+                .notifier_call = shutdown_event
+        };
+        register_xenstore_notifier(&xenstore_notifier);
+
+        return 0;
+}
+
+subsys_initcall(setup_shutdown_event);
diff --git a/drivers/xen/xenbus/xenbus_comms.c b/drivers/xen/xenbus/xenbus_comms.c
index 6efbe3f29ca5..090c61ee8fd0 100644
--- a/drivers/xen/xenbus/xenbus_comms.c
+++ b/drivers/xen/xenbus/xenbus_comms.c
@@ -203,7 +203,6 @@ int xb_read(void *data, unsigned len)
 int xb_init_comms(void)
 {
         struct xenstore_domain_interface *intf = xen_store_interface;
-        int err;
 
         if (intf->req_prod != intf->req_cons)
                 printk(KERN_ERR "XENBUS request ring is not quiescent "
@@ -216,18 +215,20 @@ int xb_init_comms(void)
                 intf->rsp_cons = intf->rsp_prod;
         }
 
-        if (xenbus_irq)
-                unbind_from_irqhandler(xenbus_irq, &xb_waitq);
+        if (xenbus_irq) {
+                /* Already have an irq; assume we're resuming */
+                rebind_evtchn_irq(xen_store_evtchn, xenbus_irq);
+        } else {
+                int err;
+                err = bind_evtchn_to_irqhandler(xen_store_evtchn, wake_waiting,
+                                                0, "xenbus", &xb_waitq);
+                if (err <= 0) {
+                        printk(KERN_ERR "XENBUS request irq failed %i\n", err);
+                        return err;
+                }
 
-        err = bind_evtchn_to_irqhandler(
-                xen_store_evtchn, wake_waiting,
-                0, "xenbus", &xb_waitq);
-        if (err <= 0) {
-                printk(KERN_ERR "XENBUS request irq failed %i\n", err);
-                return err;
+                xenbus_irq = err;
         }
 
-        xenbus_irq = err;
-
         return 0;
 }