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

* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/usb-2.6: (81 commits)
  [PATCH] USB: omninet: fix up debugging comments
  [PATCH] USB serial: add navman driver
  [PATCH] USB: Fix irda-usb use after use
  [PATCH] USB: rtl8150 small fix
  [PATCH] USB: ftdi_sio: add Icom ID1 USB product and vendor ids
  [PATCH] USB: cp2101: add new device IDs
  [PATCH] USB: fix check_ctrlrecip to allow control transfers in state ADDRESS
  [PATCH] USB: vicam.c: fix a NULL pointer dereference
  [PATCH] USB: ZC0301 driver bugfix
  [PATCH] USB: add support for Creativelabs Silvercrest USB keyboard
  [PATCH] USB: storage: new unusual_devs.h entry: Mitsumi 7in1 Card Reader
  [PATCH] USB: storage: unusual_devs.h entry 0420:0001
  [PATCH] USB: storage: another unusual_devs.h entry
  [PATCH] USB: storage: sandisk unusual_devices entry
  [PATCH] USB: fix initdata issue in isp116x-hcd
  [PATCH] USB: usbcore: usb_set_configuration oops (NULL ptr dereference)
  [PATCH] USB: usbcore: Don't assume a USB configuration includes any interfaces
  [PATCH] USB: ub 03 drop stall clearing
  [PATCH] USB: ub 02 remove diag
  [PATCH] USB: ub 01 remove first_open
  ...

149 files changed, 8580 insertions, 8524 deletions

diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig
index 85dacc92545a..b1222cd4aa46 100644
--- a/drivers/usb/Kconfig
+++ b/drivers/usb/Kconfig
@@ -10,6 +10,7 @@ menu "USB support"
 config USB_ARCH_HAS_HCD
         boolean
         default y if USB_ARCH_HAS_OHCI
+        default y if USB_ARCH_HAS_EHCI
         default y if ARM                                # SL-811
         default PCI
 
@@ -22,6 +23,7 @@ config USB_ARCH_HAS_OHCI
         default y if ARCH_LH7A404
         default y if ARCH_S3C2410
         default y if PXA27x
+        default y if ARCH_AT91RM9200
         # PPC:
         default y if STB03xxx
         default y if PPC_MPC52xx
@@ -30,6 +32,13 @@ config USB_ARCH_HAS_OHCI
         # more:
         default PCI
 
+# some non-PCI hcds implement EHCI
+config USB_ARCH_HAS_EHCI
+        boolean
+        default y if PPC_83xx
+        default y if SOC_AU1200
+        default PCI
+
 # ARM SA1111 chips have a non-PCI based "OHCI-compatible" USB host interface.
 config USB
         tristate "Support for Host-side USB"
diff --git a/drivers/usb/Makefile b/drivers/usb/Makefile
index 36e476dd9123..bb36a1c1dbb3 100644
--- a/drivers/usb/Makefile
+++ b/drivers/usb/Makefile
@@ -15,10 +15,9 @@ obj-$(CONFIG_USB_OHCI_HCD)	+= host/
 obj-$(CONFIG_USB_UHCI_HCD)      += host/
 obj-$(CONFIG_USB_SL811_HCD)     += host/
 obj-$(CONFIG_ETRAX_USB_HOST)    += host/
+obj-$(CONFIG_USB_OHCI_AT91)     += host/
 
 obj-$(CONFIG_USB_ACM)           += class/
-obj-$(CONFIG_USB_AUDIO)         += class/
-obj-$(CONFIG_USB_MIDI)          += class/
 obj-$(CONFIG_USB_PRINTER)       += class/
 
 obj-$(CONFIG_USB_STORAGE)       += storage/
@@ -48,6 +47,7 @@ obj-$(CONFIG_USB_SN9C102)	+= media/
 obj-$(CONFIG_USB_STV680)        += media/
 obj-$(CONFIG_USB_VICAM)         += media/
 obj-$(CONFIG_USB_W9968CF)       += media/
+obj-$(CONFIG_USB_ZC0301)        += media/
 
 obj-$(CONFIG_USB_CATC)          += net/
 obj-$(CONFIG_USB_KAWETH)        += net/
diff --git a/drivers/usb/class/Kconfig b/drivers/usb/class/Kconfig
index ef105a92a7bd..3a9102d2591b 100644
--- a/drivers/usb/class/Kconfig
+++ b/drivers/usb/class/Kconfig
@@ -4,53 +4,6 @@
 comment "USB Device Class drivers"
         depends on USB
 
-config OBSOLETE_OSS_USB_DRIVER
-        bool "Obsolete OSS USB drivers"
-        depends on USB && SOUND
-        help
-          This option enables support for the obsolete USB Audio and Midi
-          drivers that are scheduled for removal in the near future since
-          there are ALSA drivers for the same hardware.
-
-          Please contact Adrian Bunk <bunk@stusta.de> if you had to
-          say Y here because of missing support in the ALSA drivers.
-
-          If unsure, say N.
-
-config USB_AUDIO
-        tristate "USB Audio support"
-        depends on USB && SOUND && OBSOLETE_OSS_USB_DRIVER
-        help
-          Say Y here if you want to connect USB audio equipment such as
-          speakers to your computer's USB port. You only need this if you use
-          the OSS sound driver; ALSA has its own option for usb audio support.
-
-          To compile this driver as a module, choose M here: the
-          module will be called audio.
-
-config USB_MIDI
-        tristate "USB MIDI support"
-        depends on USB && SOUND && OBSOLETE_OSS_USB_DRIVER
-        ---help---
-          Say Y here if you want to connect a USB MIDI device to your
-          computer's USB port.  You only need this if you use the OSS
-          sound system; USB MIDI devices are supported by ALSA's USB
-          audio driver. This driver is for devices that comply with
-          'Universal Serial Bus Device Class Definition for MIDI Device'.
-
-          The following devices are known to work:
-          * Steinberg USB2MIDI
-          * Roland MPU64
-          * Roland PC-300
-          * Roland SC8850
-          * Roland UM-1
-          * Roland UM-2
-          * Roland UA-100
-          * Yamaha MU1000
-
-          To compile this driver as a module, choose M here: the
-          module will be called usb-midi.
-
 config USB_ACM
         tristate "USB Modem (CDC ACM) support"
         depends on USB
diff --git a/drivers/usb/class/Makefile b/drivers/usb/class/Makefile
index 229471247751..cc391e6c2af8 100644
--- a/drivers/usb/class/Makefile
+++ b/drivers/usb/class/Makefile
@@ -4,6 +4,4 @@
 #
 
 obj-$(CONFIG_USB_ACM)           += cdc-acm.o
-obj-$(CONFIG_USB_AUDIO)         += audio.o
-obj-$(CONFIG_USB_MIDI)          += usb-midi.o
 obj-$(CONFIG_USB_PRINTER)       += usblp.o
diff --git a/drivers/usb/class/audio.c b/drivers/usb/class/audio.c
deleted file mode 100644
index 3ad9ee8b84a9..000000000000
--- a/drivers/usb/class/audio.c
+++ /dev/null
@@ -1,3869 +0,0 @@
-/*****************************************************************************/
-
-/*
- *      audio.c  --  USB Audio Class driver
- *
- *      Copyright (C) 1999, 2000, 2001, 2003, 2004
- *          Alan Cox (alan@lxorguk.ukuu.org.uk)
- *          Thomas Sailer (sailer@ife.ee.ethz.ch)
- *
- *      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.
- *
- * Debugging:
- *      Use the 'lsusb' utility to dump the descriptors.
- *
- * 1999-09-07:  Alan Cox
- *              Parsing Audio descriptor patch
- * 1999-09-08:  Thomas Sailer
- *              Added OSS compatible data io functions; both parts of the
- *              driver remain to be glued together
- * 1999-09-10:  Thomas Sailer
- *              Beautified the driver. Added sample format conversions.
- *              Still not properly glued with the parsing code.
- *              The parsing code seems to have its problems btw,
- *              Since it parses all available configs but doesn't
- *              store which iface/altsetting belongs to which config.
- * 1999-09-20:  Thomas Sailer
- *              Threw out Alan's parsing code and implemented my own one.
- *              You cannot reasonnably linearly parse audio descriptors,
- *              especially the AudioClass descriptors have to be considered
- *              pointer lists. Mixer parsing untested, due to lack of device.
- *              First stab at synch pipe implementation, the Dallas USB DAC
- *              wants to use an Asynch out pipe. usb_audio_state now basically
- *              only contains lists of mixer and wave devices. We can therefore
- *              now have multiple mixer/wave devices per USB device.
- * 1999-10-28:  Thomas Sailer
- *              Converted to URB API. Fixed a taskstate/wakeup semantics mistake
- *              that made the driver consume all available CPU cycles.
- *              Now runs stable on UHCI-Acher/Fliegl/Sailer.
- * 1999-10-31:  Thomas Sailer
- *              Audio can now be unloaded if it is not in use by any mixer
- *              or dsp client (formerly you had to disconnect the audio devices
- *              from the USB port)
- *              Finally, about three months after ordering, my "Maxxtro SPK222"
- *              speakers arrived, isn't disdata a great mail order company 8-)
- *              Parse class specific endpoint descriptor of the audiostreaming
- *              interfaces and take the endpoint attributes from there.
- *              Unbelievably, the Philips USB DAC has a sampling rate range
- *              of over a decade, yet does not support the sampling rate control!
- *              No wonder it sounds so bad, has very audible sampling rate
- *              conversion distortion. Don't try to listen to it using
- *              decent headphones!
- *              "Let's make things better" -> but please Philips start with your
- *              own stuff!!!!
- * 1999-11-02:  Thomas Sailer
- *              It takes the Philips boxes several seconds to acquire synchronisation
- *              that means they won't play short sounds. Should probably maintain
- *              the ISO datastream even if there's nothing to play.
- *              Fix counting the total_bytes counter, RealPlayer G2 depends on it.
- * 1999-12-20:  Thomas Sailer
- *              Fix bad bug in conversion to per interface probing.
- *              disconnect was called multiple times for the audio device,
- *              leading to a premature freeing of the audio structures
- * 2000-05-13:  Thomas Sailer
- *              I don't remember who changed the find_format routine,
- *              but the change was completely broken for the Dallas
- *              chip. Anyway taking sampling rate into account in find_format
- *              is bad and should not be done unless there are devices with
- *              completely broken audio descriptors. Unless someone shows
- *              me such a descriptor, I will not allow find_format to
- *              take the sampling rate into account.
- *              Also, the former find_format made:
- *              - mpg123 play mono instead of stereo
- *              - sox completely fail for wav's with sample rates < 44.1kHz
- *                  for the Dallas chip.
- *              Also fix a rather long standing problem with applications that
- *              use "small" writes producing no sound at all.
- * 2000-05-15:  Thomas Sailer
- *              My fears came true, the Philips camera indeed has pretty stupid
- *              audio descriptors.
- * 2000-05-17:  Thomas Sailer
- *              Nemsoft spotted my stupid last minute change, thanks
- * 2000-05-19:  Thomas Sailer
- *              Fixed FEATURE_UNIT thinkos found thanks to the KC Technology
- *              Xtend device. Basically the driver treated FEATURE_UNIT's sourced
- *              by mono terminals as stereo.
- * 2000-05-20:  Thomas Sailer
- *              SELECTOR support (and thus selecting record channels from the mixer).
- *              Somewhat peculiar due to OSS interface limitations. Only works
- *              for channels where a "slider" is already in front of it (i.e.
- *              a MIXER unit or a FEATURE unit with volume capability).
- * 2000-11-26:  Thomas Sailer
- *              Workaround for Dallas DS4201. The DS4201 uses PCM8 as format tag for
- *              its 8 bit modes, but expects signed data (and should therefore have used PCM).
- * 2001-03-10:  Thomas Sailer
- *              provide abs function, prevent picking up a bogus kernel macro
- *              for abs. Bug report by Andrew Morton <andrewm@uow.edu.au>
- * 2001-06-16:  Bryce Nesbitt <bryce@obviously.com>
- *              Fix SNDCTL_DSP_STEREO API violation
- * 2003-04-08:  Oliver Neukum (oliver@neukum.name):
- *              Setting a configuration is done by usbcore and must not be overridden
- * 2004-02-27:  Workaround for broken synch descriptors
- * 2004-03-07:  Alan Stern <stern@rowland.harvard.edu>
- *              Add usb_ifnum_to_if() and usb_altnum_to_altsetting() support.
- *              Use the in-memory descriptors instead of reading them from the device.
- * 
- */
-
-/*
- * Strategy:
- *
- * Alan Cox and Thomas Sailer are starting to dig at opposite ends and
- * are hoping to meet in the middle, just like tunnel diggers :)
- * Alan tackles the descriptor parsing, Thomas the actual data IO and the
- * OSS compatible interface.
- *
- * Data IO implementation issues
- *
- * A mmap'able ring buffer per direction is implemented, because
- * almost every OSS app expects it. It is however impractical to
- * transmit/receive USB data directly into and out of the ring buffer,
- * due to alignment and synchronisation issues. Instead, the ring buffer
- * feeds a constant time delay line that handles the USB issues.
- *
- * Now we first try to find an alternate setting that exactly matches
- * the sample format requested by the user. If we find one, we do not
- * need to perform any sample rate conversions. If there is no matching
- * altsetting, we choose the closest one and perform sample format
- * conversions. We never do sample rate conversion; these are too
- * expensive to be performed in the kernel.
- *
- * Current status: no known HCD-specific issues.
- *
- * Generally: Due to the brokenness of the Audio Class spec
- * it seems generally impossible to write a generic Audio Class driver,
- * so a reasonable driver should implement the features that are actually
- * used.
- *
- * Parsing implementation issues
- *
- * One cannot reasonably parse the AudioClass descriptors linearly.
- * Therefore the current implementation features routines to look
- * for a specific descriptor in the descriptor list.
- *
- * How does the parsing work? First, all interfaces are searched
- * for an AudioControl class interface. If found, the config descriptor
- * that belongs to the current configuration is searched and
- * the HEADER descriptor is found. It contains a list of
- * all AudioStreaming and MIDIStreaming devices. This list is then walked,
- * and all AudioStreaming interfaces are classified into input and output
- * interfaces (according to the endpoint0 direction in altsetting1) (MIDIStreaming
- * is currently not supported). The input & output list is then used
- * to group inputs and outputs together and issued pairwise to the
- * AudioStreaming class parser. Finally, all OUTPUT_TERMINAL descriptors
- * are walked and issued to the mixer construction routine.
- *
- * The AudioStreaming parser simply enumerates all altsettings belonging
- * to the specified interface. It looks for AS_GENERAL and FORMAT_TYPE
- * class specific descriptors to extract the sample format/sample rate
- * data. Only sample format types PCM and PCM8 are supported right now, and
- * only FORMAT_TYPE_I is handled. The isochronous data endpoint needs to
- * be the first endpoint of the interface, and the optional synchronisation
- * isochronous endpoint the second one.
- *
- * Mixer construction works as follows: The various TERMINAL and UNIT
- * descriptors span a tree from the root (OUTPUT_TERMINAL) through the
- * intermediate nodes (UNITs) to the leaves (INPUT_TERMINAL). We walk
- * that tree in a depth first manner. FEATURE_UNITs may contribute volume,
- * bass and treble sliders to the mixer, MIXER_UNITs volume sliders.
- * The terminal type encoded in the INPUT_TERMINALs feeds a heuristic
- * to determine "meaningful" OSS slider numbers, however we will see
- * how well this works in practice. Other features are not used at the
- * moment, they seem less often used. Also, it seems difficult at least
- * to construct recording source switches from SELECTOR_UNITs, but
- * since there are not many USB ADC's available, we leave that for later.
- */
-
-/*****************************************************************************/
-
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/string.h>
-#include <linux/timer.h>
-#include <linux/sched.h>
-#include <linux/smp_lock.h>
-#include <linux/module.h>
-#include <linux/sound.h>
-#include <linux/soundcard.h>
-#include <linux/list.h>
-#include <linux/vmalloc.h>
-#include <linux/init.h>
-#include <linux/poll.h>
-#include <linux/bitops.h>
-#include <asm/uaccess.h>
-#include <asm/io.h>
-#include <linux/usb.h>
-
-#include "audio.h"
-
-/*
- * Version Information
- */
-#define DRIVER_VERSION "v1.0.0"
-#define DRIVER_AUTHOR "Alan Cox <alan@lxorguk.ukuu.org.uk>, Thomas Sailer (sailer@ife.ee.ethz.ch)"
-#define DRIVER_DESC "USB Audio Class driver"
-
-#define AUDIO_DEBUG 1
-
-#define SND_DEV_DSP16   5
-
-#define dprintk(x)
-
-/* --------------------------------------------------------------------- */
-
-/*
- * Linked list of all audio devices...
- */
-static struct list_head audiodevs = LIST_HEAD_INIT(audiodevs);
-static DECLARE_MUTEX(open_sem);
-
-/*
- * wait queue for processes wanting to open an USB audio device
- */
-static DECLARE_WAIT_QUEUE_HEAD(open_wait);
-
-
-#define MAXFORMATS        MAX_ALT
-#define DMABUFSHIFT       17  /* 128k worth of DMA buffer */
-#define NRSGBUF           (1U<<(DMABUFSHIFT-PAGE_SHIFT))
-
-/*
- * This influences:
- * - Latency
- * - Interrupt rate
- * - Synchronisation behaviour
- * Don't touch this if you don't understand all of the above.
- */
-#define DESCFRAMES  5
-#define SYNCFRAMES  DESCFRAMES
-
-#define MIXFLG_STEREOIN   1
-#define MIXFLG_STEREOOUT  2
-
-struct mixerchannel {
-        __u16 value;
-        __u16 osschannel;  /* number of the OSS channel */
-        __s16 minval, maxval;
-        __u16 slctunitid;
-        __u8 unitid;
-        __u8 selector;
-        __u8 chnum;
-        __u8 flags;
-};
-
-struct audioformat {
-        unsigned int format;
-        unsigned int sratelo;
-        unsigned int sratehi;
-        unsigned char altsetting;
-        unsigned char attributes;
-};
-
-struct dmabuf {
-        /* buffer data format */
-        unsigned int format;
-        unsigned int srate;
-        /* physical buffer */
-        unsigned char *sgbuf[NRSGBUF];
-        unsigned bufsize;
-        unsigned numfrag;
-        unsigned fragshift;
-        unsigned wrptr, rdptr;
-        unsigned total_bytes;
-        int count;
-        unsigned error; /* over/underrun */
-        wait_queue_head_t wait;
-        /* redundant, but makes calculations easier */
-        unsigned fragsize;
-        unsigned dmasize;
-        /* OSS stuff */
-        unsigned mapped:1;
-        unsigned ready:1;
-        unsigned ossfragshift;
-        int ossmaxfrags;
-        unsigned subdivision;
-};
-
-struct usb_audio_state;
-
-#define FLG_URB0RUNNING   1
-#define FLG_URB1RUNNING   2
-#define FLG_SYNC0RUNNING  4
-#define FLG_SYNC1RUNNING  8
-#define FLG_RUNNING      16
-#define FLG_CONNECTED    32
-
-struct my_data_urb {
-        struct urb *urb;
-};
-
-struct my_sync_urb {
-        struct urb *urb;
-};
-
-
-struct usb_audiodev {
-        struct list_head list;
-        struct usb_audio_state *state;
-        
-        /* soundcore stuff */
-        int dev_audio;
-
-        /* wave stuff */
-        mode_t open_mode;
-        spinlock_t lock;         /* DMA buffer access spinlock */
-
-        struct usbin {
-                int interface;           /* Interface number, -1 means not used */
-                unsigned int format;     /* USB data format */
-                unsigned int datapipe;   /* the data input pipe */
-                unsigned int syncpipe;   /* the synchronisation pipe - 0 for anything but adaptive IN mode */
-                unsigned int syncinterval;  /* P for adaptive IN mode, 0 otherwise */
-                unsigned int freqn;      /* nominal sampling rate in USB format, i.e. fs/1000 in Q10.14 */
-                unsigned int freqmax;    /* maximum sampling rate, used for buffer management */
-                unsigned int phase;      /* phase accumulator */
-                unsigned int flags;      /* see FLG_ defines */
-                
-                struct my_data_urb durb[2];  /* ISO descriptors for the data endpoint */
-                struct my_sync_urb surb[2];  /* ISO sync pipe descriptor if needed */
-                
-                struct dmabuf dma;
-        } usbin;
-
-        struct usbout {
-                int interface;           /* Interface number, -1 means not used */
-                unsigned int format;     /* USB data format */
-                unsigned int datapipe;   /* the data input pipe */
-                unsigned int syncpipe;   /* the synchronisation pipe - 0 for anything but asynchronous OUT mode */
-                unsigned int syncinterval;  /* P for asynchronous OUT mode, 0 otherwise */
-                unsigned int freqn;      /* nominal sampling rate in USB format, i.e. fs/1000 in Q10.14 */
-                unsigned int freqm;      /* momentary sampling rate in USB format, i.e. fs/1000 in Q10.14 */
-                unsigned int freqmax;    /* maximum sampling rate, used for buffer management */
-                unsigned int phase;      /* phase accumulator */
-                unsigned int flags;      /* see FLG_ defines */
-
-                struct my_data_urb durb[2];  /* ISO descriptors for the data endpoint */
-                struct my_sync_urb surb[2];  /* ISO sync pipe descriptor if needed */
-                
-                struct dmabuf dma;
-        } usbout;
-
-
-        unsigned int numfmtin, numfmtout;
-        struct audioformat fmtin[MAXFORMATS];
-        struct audioformat fmtout[MAXFORMATS];
-};  
-
-struct usb_mixerdev {
-        struct list_head list;
-        struct usb_audio_state *state;
-
-        /* soundcore stuff */
-        int dev_mixer;
-
-        unsigned char iface;  /* interface number of the AudioControl interface */
-
-        /* USB format descriptions */
-        unsigned int numch, modcnt;
-
-        /* mixch is last and gets allocated dynamically */
-        struct mixerchannel ch[0];
-};
-
-struct usb_audio_state {
-        struct list_head audiodev;
-
-        /* USB device */
-        struct usb_device *usbdev;
-
-        struct list_head audiolist;
-        struct list_head mixerlist;
-
-        unsigned count;  /* usage counter; NOTE: the usb stack is also considered a user */
-};
-
-/* private audio format extensions */
-#define AFMT_STEREO        0x80000000
-#define AFMT_ISSTEREO(x)   ((x) & AFMT_STEREO)
-#define AFMT_IS16BIT(x)    ((x) & (AFMT_S16_LE|AFMT_S16_BE|AFMT_U16_LE|AFMT_U16_BE))
-#define AFMT_ISUNSIGNED(x) ((x) & (AFMT_U8|AFMT_U16_LE|AFMT_U16_BE))
-#define AFMT_BYTESSHIFT(x) ((AFMT_ISSTEREO(x) ? 1 : 0) + (AFMT_IS16BIT(x) ? 1 : 0))
-#define AFMT_BYTES(x)      (1<<AFMT_BYTESSHFIT(x))
-
-/* --------------------------------------------------------------------- */
-
-static inline unsigned ld2(unsigned int x)
-{
-        unsigned r = 0;
-        
-        if (x >= 0x10000) {
-                x >>= 16;
-                r += 16;
-        }
-        if (x >= 0x100) {
-                x >>= 8;
-                r += 8;
-        }
-        if (x >= 0x10) {
-                x >>= 4;
-                r += 4;
-        }
-        if (x >= 4) {
-                x >>= 2;
-                r += 2;
-        }
-        if (x >= 2)
-                r++;
-        return r;
-}
-
-/* --------------------------------------------------------------------- */
-
-/*
- * OSS compatible ring buffer management. The ring buffer may be mmap'ed into
- * an application address space.
- *
- * I first used the rvmalloc stuff copied from bttv. Alan Cox did not like it, so
- * we now use an array of pointers to a single page each. This saves us the
- * kernel page table manipulations, but we have to do a page table alike mechanism
- * (though only one indirection) in software.
- */
-
-static void dmabuf_release(struct dmabuf *db)
-{
-        unsigned int nr;
-        void *p;
-
-        for(nr = 0; nr < NRSGBUF; nr++) {
-                if (!(p = db->sgbuf[nr]))
-                        continue;
-                ClearPageReserved(virt_to_page(p));
-                free_page((unsigned long)p);
-                db->sgbuf[nr] = NULL;
-        }
-        db->mapped = db->ready = 0;
-}
-
-static int dmabuf_init(struct dmabuf *db)
-{
-        unsigned int nr, bytepersec, bufs;
-        void *p;
-
-        /* initialize some fields */
-        db->rdptr = db->wrptr = db->total_bytes = db->count = db->error = 0;
-        /* calculate required buffer size */
-        bytepersec = db->srate << AFMT_BYTESSHIFT(db->format);
-        bufs = 1U << DMABUFSHIFT;
-        if (db->ossfragshift) {
-                if ((1000 << db->ossfragshift) < bytepersec)
-                        db->fragshift = ld2(bytepersec/1000);
-                else
-                        db->fragshift = db->ossfragshift;
-        } else {
-                db->fragshift = ld2(bytepersec/100/(db->subdivision ? db->subdivision : 1));
-                if (db->fragshift < 3)
-                        db->fragshift = 3;
-        }
-        db->numfrag = bufs >> db->fragshift;
-        while (db->numfrag < 4 && db->fragshift > 3) {
-                db->fragshift--;
-                db->numfrag = bufs >> db->fragshift;
-        }
-        db->fragsize = 1 << db->fragshift;
-        if (db->ossmaxfrags >= 4 && db->ossmaxfrags < db->numfrag)
-                db->numfrag = db->ossmaxfrags;
-        db->dmasize = db->numfrag << db->fragshift;
-        for(nr = 0; nr < NRSGBUF; nr++) {
-                if (!db->sgbuf[nr]) {
-                        p = (void *)get_zeroed_page(GFP_KERNEL);
-                        if (!p)
-                                return -ENOMEM;
-                        db->sgbuf[nr] = p;
-                        SetPageReserved(virt_to_page(p));
-                }
-                memset(db->sgbuf[nr], AFMT_ISUNSIGNED(db->format) ? 0x80 : 0, PAGE_SIZE);
-                if ((nr << PAGE_SHIFT) >= db->dmasize)
-                        break;
-        }
-        db->bufsize = nr << PAGE_SHIFT;
-        db->ready = 1;
-        dprintk((KERN_DEBUG "usbaudio: dmabuf_init bytepersec %d bufs %d ossfragshift %d ossmaxfrags %d "
-                 "fragshift %d fragsize %d numfrag %d dmasize %d bufsize %d fmt 0x%x srate %d\n",
-                 bytepersec, bufs, db->ossfragshift, db->ossmaxfrags, db->fragshift, db->fragsize,
-                 db->numfrag, db->dmasize, db->bufsize, db->format, db->srate));
-        return 0;
-}
-
-static int dmabuf_mmap(struct vm_area_struct *vma, struct dmabuf *db, unsigned long start, unsigned long size, pgprot_t prot)
-{
-        unsigned int nr;
-
-        if (!db->ready || db->mapped || (start | size) & (PAGE_SIZE-1) || size > db->bufsize)
-                return -EINVAL;
-        size >>= PAGE_SHIFT;
-        for(nr = 0; nr < size; nr++)
-                if (!db->sgbuf[nr])
-                        return -EINVAL;
-        db->mapped = 1;
-        for(nr = 0; nr < size; nr++) {
-                unsigned long pfn;
-
-                pfn = virt_to_phys(db->sgbuf[nr]) >> PAGE_SHIFT;
-                if (remap_pfn_range(vma, start, pfn, PAGE_SIZE, prot))
-                        return -EAGAIN;
-                start += PAGE_SIZE;
-        }
-        return 0;
-}
-
-static void dmabuf_copyin(struct dmabuf *db, const void *buffer, unsigned int size)
-{
-        unsigned int pgrem, rem;
-
-        db->total_bytes += size;
-        for (;;) {
-                if (size <= 0)
-                        return;
-                pgrem = ((~db->wrptr) & (PAGE_SIZE-1)) + 1;
-                if (pgrem > size)
-                        pgrem = size;
-                rem = db->dmasize - db->wrptr;
-                if (pgrem > rem)
-                        pgrem = rem;
-                memcpy((db->sgbuf[db->wrptr >> PAGE_SHIFT]) + (db->wrptr & (PAGE_SIZE-1)), buffer, pgrem);
-                size -= pgrem;
-                buffer += pgrem;
-                db->wrptr += pgrem;
-                if (db->wrptr >= db->dmasize)
-                        db->wrptr = 0;
-        }
-}
-
-static void dmabuf_copyout(struct dmabuf *db, void *buffer, unsigned int size)
-{
-        unsigned int pgrem, rem;
-
-        db->total_bytes += size;
-        for (;;) {
-                if (size <= 0)
-                        return;
-                pgrem = ((~db->rdptr) & (PAGE_SIZE-1)) + 1;
-                if (pgrem > size)
-                        pgrem = size;
-                rem = db->dmasize - db->rdptr;
-                if (pgrem > rem)
-                        pgrem = rem;
-                memcpy(buffer, (db->sgbuf[db->rdptr >> PAGE_SHIFT]) + (db->rdptr & (PAGE_SIZE-1)), pgrem);
-                size -= pgrem;
-                buffer += pgrem;
-                db->rdptr += pgrem;
-                if (db->rdptr >= db->dmasize)
-                        db->rdptr = 0;
-        }
-}
-
-static int dmabuf_copyin_user(struct dmabuf *db, unsigned int ptr, const void __user *buffer, unsigned int size)
-{
-        unsigned int pgrem, rem;
-
-        if (!db->ready || db->mapped)
-                return -EINVAL;
-        for (;;) {
-                if (size <= 0)
-                        return 0;
-                pgrem = ((~ptr) & (PAGE_SIZE-1)) + 1;
-                if (pgrem > size)
-                        pgrem = size;
-                rem = db->dmasize - ptr;
-                if (pgrem > rem)
-                        pgrem = rem;
-                if (copy_from_user((db->sgbuf[ptr >> PAGE_SHIFT]) + (ptr & (PAGE_SIZE-1)), buffer, pgrem))
-                        return -EFAULT;
-                size -= pgrem;
-                buffer += pgrem;
-                ptr += pgrem;
-                if (ptr >= db->dmasize)
-                        ptr = 0;
-        }
-}
-
-static int dmabuf_copyout_user(struct dmabuf *db, unsigned int ptr, void __user *buffer, unsigned int size)
-{
-        unsigned int pgrem, rem;
-
-        if (!db->ready || db->mapped)
-                return -EINVAL;
-        for (;;) {
-                if (size <= 0)
-                        return 0;
-                pgrem = ((~ptr) & (PAGE_SIZE-1)) + 1;
-                if (pgrem > size)
-                        pgrem = size;
-                rem = db->dmasize - ptr;
-                if (pgrem > rem)
-                        pgrem = rem;
-                if (copy_to_user(buffer, (db->sgbuf[ptr >> PAGE_SHIFT]) + (ptr & (PAGE_SIZE-1)), pgrem))
-                        return -EFAULT;
-                size -= pgrem;
-                buffer += pgrem;
-                ptr += pgrem;
-                if (ptr >= db->dmasize)
-                        ptr = 0;
-        }
-}
-
-/* --------------------------------------------------------------------- */
-/*
- * USB I/O code. We do sample format conversion if necessary
- */
-
-static void usbin_stop(struct usb_audiodev *as)
-{
-        struct usbin *u = &as->usbin;
-        unsigned long flags;
-        unsigned int i, notkilled = 1;
-
-        spin_lock_irqsave(&as->lock, flags);
-        u->flags &= ~FLG_RUNNING;
-        i = u->flags;
-        spin_unlock_irqrestore(&as->lock, flags);
-        while (i & (FLG_URB0RUNNING|FLG_URB1RUNNING|FLG_SYNC0RUNNING|FLG_SYNC1RUNNING)) {
-                if (notkilled)
-                        schedule_timeout_interruptible(1);
-                else
-                        schedule_timeout_uninterruptible(1);
-                spin_lock_irqsave(&as->lock, flags);
-                i = u->flags;
-                spin_unlock_irqrestore(&as->lock, flags);
-                if (notkilled && signal_pending(current)) {
-                        if (i & FLG_URB0RUNNING)
-                                usb_kill_urb(u->durb[0].urb);
-                        if (i & FLG_URB1RUNNING)
-                                usb_kill_urb(u->durb[1].urb);
-                        if (i & FLG_SYNC0RUNNING)
-                                usb_kill_urb(u->surb[0].urb);
-                        if (i & FLG_SYNC1RUNNING)
-                                usb_kill_urb(u->surb[1].urb);
-                        notkilled = 0;
-                }
-        }
-        set_current_state(TASK_RUNNING);
-        kfree(u->durb[0].urb->transfer_buffer);
-        kfree(u->durb[1].urb->transfer_buffer);
-        kfree(u->surb[0].urb->transfer_buffer);
-        kfree(u->surb[1].urb->transfer_buffer);
-        u->durb[0].urb->transfer_buffer = u->durb[1].urb->transfer_buffer = 
-                u->surb[0].urb->transfer_buffer = u->surb[1].urb->transfer_buffer = NULL;
-}
-
-static inline void usbin_release(struct usb_audiodev *as)
-{
-        usbin_stop(as);
-}
-
-static void usbin_disc(struct usb_audiodev *as)
-{
-        struct usbin *u = &as->usbin;
-
-        unsigned long flags;
-
-        spin_lock_irqsave(&as->lock, flags);
-        u->flags &= ~(FLG_RUNNING | FLG_CONNECTED);
-        spin_unlock_irqrestore(&as->lock, flags);
-        usbin_stop(as);
-}
-
-static void conversion(const void *ibuf, unsigned int ifmt, void *obuf, unsigned int ofmt, void *tmp, unsigned int scnt)
-{
-        unsigned int cnt, i;
-        __s16 *sp, *sp2, s;
-        unsigned char *bp;
-
-        cnt = scnt;
-        if (AFMT_ISSTEREO(ifmt))
-                cnt <<= 1;
-        sp = ((__s16 *)tmp) + cnt;
-        switch (ifmt & ~AFMT_STEREO) {
-        case AFMT_U8:
-                for (bp = ((unsigned char *)ibuf)+cnt, i = 0; i < cnt; i++) {
-                        bp--;
-                        sp--;
-                        *sp = (*bp ^ 0x80) << 8;
-                }
-                break;
-                        
-        case AFMT_S8:
-                for (bp = ((unsigned char *)ibuf)+cnt, i = 0; i < cnt; i++) {
-                        bp--;
-                        sp--;
-                        *sp = *bp << 8;
-                }
-                break;
-                
-        case AFMT_U16_LE:
-                for (bp = ((unsigned char *)ibuf)+2*cnt, i = 0; i < cnt; i++) {
-                        bp -= 2;
-                        sp--;
-                        *sp = (bp[0] | (bp[1] << 8)) ^ 0x8000;
-                }
-                break;
-
-        case AFMT_U16_BE:
-                for (bp = ((unsigned char *)ibuf)+2*cnt, i = 0; i < cnt; i++) {
-                        bp -= 2;
-                        sp--;
-                        *sp = (bp[1] | (bp[0] << 8)) ^ 0x8000;
-                }
-                break;
-
-        case AFMT_S16_LE:
-                for (bp = ((unsigned char *)ibuf)+2*cnt, i = 0; i < cnt; i++) {
-                        bp -= 2;
-                        sp--;
-                        *sp = bp[0] | (bp[1] << 8);
-                }
-                break;
-
-        case AFMT_S16_BE:
-                for (bp = ((unsigned char *)ibuf)+2*cnt, i = 0; i < cnt; i++) {
-                        bp -= 2;
-                        sp--;
-                        *sp = bp[1] | (bp[0] << 8);
-                }
-                break;
-        }
-        if (!AFMT_ISSTEREO(ifmt) && AFMT_ISSTEREO(ofmt)) {
-                /* expand from mono to stereo */
-                for (sp = ((__s16 *)tmp)+scnt, sp2 = ((__s16 *)tmp)+2*scnt, i = 0; i < scnt; i++) {
-                        sp--;
-                        sp2 -= 2;
-                        sp2[0] = sp2[1] = sp[0];
-                }
-        }
-        if (AFMT_ISSTEREO(ifmt) && !AFMT_ISSTEREO(ofmt)) {
-                /* contract from stereo to mono */
-                for (sp = sp2 = ((__s16 *)tmp), i = 0; i < scnt; i++, sp++, sp2 += 2)
-                        sp[0] = (sp2[0] + sp2[1]) >> 1;
-        }
-        cnt = scnt;
-        if (AFMT_ISSTEREO(ofmt))
-                cnt <<= 1;
-        sp = ((__s16 *)tmp);
-        bp = ((unsigned char *)obuf);
-        switch (ofmt & ~AFMT_STEREO) {
-        case AFMT_U8:
-                for (i = 0; i < cnt; i++, sp++, bp++)
-                        *bp = (*sp >> 8) ^ 0x80;
-                break;
-
-        case AFMT_S8:
-                for (i = 0; i < cnt; i++, sp++, bp++)
-                        *bp = *sp >> 8;
-                break;
-
-        case AFMT_U16_LE:
-                for (i = 0; i < cnt; i++, sp++, bp += 2) {
-                        s = *sp;
-                        bp[0] = s;
-                        bp[1] = (s >> 8) ^ 0x80;
-                }
-                break;
-
-        case AFMT_U16_BE:
-                for (i = 0; i < cnt; i++, sp++, bp += 2) {
-                        s = *sp;
-                        bp[1] = s;
-                        bp[0] = (s >> 8) ^ 0x80;
-                }
-                break;
-
-        case AFMT_S16_LE:
-                for (i = 0; i < cnt; i++, sp++, bp += 2) {
-                        s = *sp;
-                        bp[0] = s;
-                        bp[1] = s >> 8;
-                }
-                break;
-
-        case AFMT_S16_BE:
-                for (i = 0; i < cnt; i++, sp++, bp += 2) {
-                        s = *sp;
-                        bp[1] = s;
-                        bp[0] = s >> 8;
-                }
-                break;
-        }
-        
-}
-
-static void usbin_convert(struct usbin *u, unsigned char *buffer, unsigned int samples)
-{
-        union {
-                __s16 s[64];
-                unsigned char b[0];
-        } tmp;
-        unsigned int scnt, maxs, ufmtsh, dfmtsh;
-
-        ufmtsh = AFMT_BYTESSHIFT(u->format);
-        dfmtsh = AFMT_BYTESSHIFT(u->dma.format);
-        maxs = (AFMT_ISSTEREO(u->dma.format | u->format)) ? 32 : 64;
-        while (samples > 0) {
-                scnt = samples;
-                if (scnt > maxs)
-                        scnt = maxs;
-                conversion(buffer, u->format, tmp.b, u->dma.format, tmp.b, scnt);
-                dmabuf_copyin(&u->dma, tmp.b, scnt << dfmtsh);
-                buffer += scnt << ufmtsh;
-                samples -= scnt;
-        }
-}               
-
-static int usbin_prepare_desc(struct usbin *u, struct urb *urb)
-{
-        unsigned int i, maxsize, offs;
-
-        maxsize = (u->freqmax + 0x3fff) >> (14 - AFMT_BYTESSHIFT(u->format));
-        //printk(KERN_DEBUG "usbin_prepare_desc: maxsize %d freq 0x%x format 0x%x\n", maxsize, u->freqn, u->format);
-        for (i = offs = 0; i < DESCFRAMES; i++, offs += maxsize) {
-                urb->iso_frame_desc[i].length = maxsize;
-                urb->iso_frame_desc[i].offset = offs;
-        }
-        urb->interval = 1;
-        return 0;
-}
-
-/*
- * return value: 0 if descriptor should be restarted, -1 otherwise
- * convert sample format on the fly if necessary
- */
-static int usbin_retire_desc(struct usbin *u, struct urb *urb)
-{
-        unsigned int i, ufmtsh, dfmtsh, err = 0, cnt, scnt, dmafree;
-        unsigned char *cp;
-
-        ufmtsh = AFMT_BYTESSHIFT(u->format);
-        dfmtsh = AFMT_BYTESSHIFT(u->dma.format);
-        for (i = 0; i < DESCFRAMES; i++) {
-                cp = ((unsigned char *)urb->transfer_buffer) + urb->iso_frame_desc[i].offset;
-                if (urb->iso_frame_desc[i].status) {
-                        dprintk((KERN_DEBUG "usbin_retire_desc: frame %u status %d\n", i, urb->iso_frame_desc[i].status));
-                        continue;
-                }
-                scnt = urb->iso_frame_desc[i].actual_length >> ufmtsh;
-                if (!scnt)
-                        continue;
-                cnt = scnt << dfmtsh;
-                if (!u->dma.mapped) {
-                        dmafree = u->dma.dmasize - u->dma.count;
-                        if (cnt > dmafree) {
-                                scnt = dmafree >> dfmtsh;
-                                cnt = scnt << dfmtsh;
-                                err++;
-                        }
-                }
-                u->dma.count += cnt;
-                if (u->format == u->dma.format) {
-                        /* we do not need format conversion */
-                        dprintk((KERN_DEBUG "usbaudio: no sample format conversion\n"));
-                        dmabuf_copyin(&u->dma, cp, cnt);
-                } else {
-                        /* we need sampling format conversion */
-                        dprintk((KERN_DEBUG "usbaudio: sample format conversion %x != %x\n", u->format, u->dma.format));
-                        usbin_convert(u, cp, scnt);
-                }
-        }
-        if (err)
-                u->dma.error++;
-        if (u->dma.count >= (signed)u->dma.fragsize)
-                wake_up(&u->dma.wait);
-        return err ? -1 : 0;
-}
-
-static void usbin_completed(struct urb *urb, struct pt_regs *regs)
-{
-        struct usb_audiodev *as = (struct usb_audiodev *)urb->context;
-        struct usbin *u = &as->usbin;
-        unsigned long flags;
-        unsigned int mask;
-        int suret = 0;
-
-#if 0
-        printk(KERN_DEBUG "usbin_completed: status %d errcnt %d flags 0x%x\n", urb->status, urb->error_count, u->flags);
-#endif
-        if (urb == u->durb[0].urb)
-                mask = FLG_URB0RUNNING;
-        else if (urb == u->durb[1].urb)
-                mask = FLG_URB1RUNNING;
-        else {
-                mask = 0;
-                printk(KERN_ERR "usbin_completed: panic: unknown URB\n");
-        }
-        urb->dev = as->state->usbdev;
-        spin_lock_irqsave(&as->lock, flags);
-        if (!usbin_retire_desc(u, urb) &&
-            u->flags & FLG_RUNNING &&
-            !usbin_prepare_desc(u, urb) && 
-            (suret = usb_submit_urb(urb, GFP_ATOMIC)) == 0) {
-                u->flags |= mask;
-        } else {
-                u->flags &= ~(mask | FLG_RUNNING);
-                wake_up(&u->dma.wait);
-                printk(KERN_DEBUG "usbin_completed: descriptor not restarted (usb_submit_urb: %d)\n", suret);
-        }
-        spin_unlock_irqrestore(&as->lock, flags);
-}
-
-/*
- * we output sync data
- */
-static int usbin_sync_prepare_desc(struct usbin *u, struct urb *urb)
-{
-        unsigned char *cp = urb->transfer_buffer;
-        unsigned int i, offs;
-        
-        for (i = offs = 0; i < SYNCFRAMES; i++, offs += 3, cp += 3) {
-                urb->iso_frame_desc[i].length = 3;
-                urb->iso_frame_desc[i].offset = offs;
-                cp[0] = u->freqn;
-                cp[1] = u->freqn >> 8;
-                cp[2] = u->freqn >> 16;
-        }
-        urb->interval = 1;
-        return 0;
-}
-
-/*
- * return value: 0 if descriptor should be restarted, -1 otherwise
- */
-static int usbin_sync_retire_desc(struct usbin *u, struct urb *urb)
-{
-        unsigned int i;
-        
-        for (i = 0; i < SYNCFRAMES; i++)
-                if (urb->iso_frame_desc[0].status)
-                        dprintk((KERN_DEBUG "usbin_sync_retire_desc: frame %u status %d\n", i, urb->iso_frame_desc[i].status));
-        return 0;
-}
-
-static void usbin_sync_completed(struct urb *urb, struct pt_regs *regs)
-{
-        struct usb_audiodev *as = (struct usb_audiodev *)urb->context;
-        struct usbin *u = &as->usbin;
-        unsigned long flags;
-        unsigned int mask;
-        int suret = 0;
-
-#if 0
-        printk(KERN_DEBUG "usbin_sync_completed: status %d errcnt %d flags 0x%x\n", urb->status, urb->error_count, u->flags);
-#endif
-        if (urb == u->surb[0].urb)
-                mask = FLG_SYNC0RUNNING;
-        else if (urb == u->surb[1].urb)
-                mask = FLG_SYNC1RUNNING;
-        else {
-                mask = 0;
-                printk(KERN_ERR "usbin_sync_completed: panic: unknown URB\n");
-        }
-        urb->dev = as->state->usbdev;
-        spin_lock_irqsave(&as->lock, flags);
-        if (!usbin_sync_retire_desc(u, urb) &&
-            u->flags & FLG_RUNNING &&
-            !usbin_sync_prepare_desc(u, urb) && 
-            (suret = usb_submit_urb(urb, GFP_ATOMIC)) == 0) {
-                u->flags |= mask;
-        } else {
-                u->flags &= ~(mask | FLG_RUNNING);
-                wake_up(&u->dma.wait);
-                dprintk((KERN_DEBUG "usbin_sync_completed: descriptor not restarted (usb_submit_urb: %d)\n", suret));
-        }
-        spin_unlock_irqrestore(&as->lock, flags);
-}
-
-static int usbin_start(struct usb_audiodev *as)
-{
-        struct usb_device *dev = as->state->usbdev;
-        struct usbin *u = &as->usbin;
-        struct urb *urb;
-        unsigned long flags;
-        unsigned int maxsze, bufsz;
-
-#if 0
-        printk(KERN_DEBUG "usbin_start: device %d ufmt 0x%08x dfmt 0x%08x srate %d\n",
-               dev->devnum, u->format, u->dma.format, u->dma.srate);
-#endif
-        /* allocate USB storage if not already done */
-        spin_lock_irqsave(&as->lock, flags);
-        if (!(u->flags & FLG_CONNECTED)) {
-                spin_unlock_irqrestore(&as->lock, flags);
-                return -EIO;
-        }
-        if (!(u->flags & FLG_RUNNING)) {
-                spin_unlock_irqrestore(&as->lock, flags);
-                u->freqn = ((u->dma.srate << 11) + 62) / 125; /* this will overflow at approx 2MSPS */
-                u->freqmax = u->freqn + (u->freqn >> 2);
-                u->phase = 0;
-                maxsze = (u->freqmax + 0x3fff) >> (14 - AFMT_BYTESSHIFT(u->format));
-                bufsz = DESCFRAMES * maxsze;
-                kfree(u->durb[0].urb->transfer_buffer);
-                u->durb[0].urb->transfer_buffer = kmalloc(bufsz, GFP_KERNEL);
-                u->durb[0].urb->transfer_buffer_length = bufsz;
-                kfree(u->durb[1].urb->transfer_buffer);
-                u->durb[1].urb->transfer_buffer = kmalloc(bufsz, GFP_KERNEL);
-                u->durb[1].urb->transfer_buffer_length = bufsz;
-                if (u->syncpipe) {
-                        kfree(u->surb[0].urb->transfer_buffer);
-                        u->surb[0].urb->transfer_buffer = kmalloc(3*SYNCFRAMES, GFP_KERNEL);
-                        u->surb[0].urb->transfer_buffer_length = 3*SYNCFRAMES;
-                        kfree(u->surb[1].urb->transfer_buffer);
-                        u->surb[1].urb->transfer_buffer = kmalloc(3*SYNCFRAMES, GFP_KERNEL);
-                        u->surb[1].urb->transfer_buffer_length = 3*SYNCFRAMES;
-                }
-                if (!u->durb[0].urb->transfer_buffer || !u->durb[1].urb->transfer_buffer || 
-                    (u->syncpipe && (!u->surb[0].urb->transfer_buffer || !u->surb[1].urb->transfer_buffer))) {
-                        printk(KERN_ERR "usbaudio: cannot start playback device %d\n", dev->devnum);
-                        return 0;
-                }
-                spin_lock_irqsave(&as->lock, flags);
-        }
-        if (u->dma.count >= u->dma.dmasize && !u->dma.mapped) {
-                spin_unlock_irqrestore(&as->lock, flags);
-                return 0;
-        }
-        u->flags |= FLG_RUNNING;
-        if (!(u->flags & FLG_URB0RUNNING)) {
-                urb = u->durb[0].urb;
-                urb->dev = dev;
-                urb->pipe = u->datapipe;
-                urb->transfer_flags = URB_ISO_ASAP;
-                urb->number_of_packets = DESCFRAMES;
-                urb->context = as;
-                urb->complete = usbin_completed;
-                if (!usbin_prepare_desc(u, urb) && !usb_submit_urb(urb, GFP_KERNEL))
-                        u->flags |= FLG_URB0RUNNING;
-                else
-                        u->flags &= ~FLG_RUNNING;
-        }
-        if (u->flags & FLG_RUNNING && !(u->flags & FLG_URB1RUNNING)) {
-                urb = u->durb[1].urb;
-                urb->dev = dev;
-                urb->pipe = u->datapipe;
-                urb->transfer_flags = URB_ISO_ASAP;
-                urb->number_of_packets = DESCFRAMES;
-                urb->context = as;
-                urb->complete = usbin_completed;
-                if (!usbin_prepare_desc(u, urb) && !usb_submit_urb(urb, GFP_KERNEL))
-                        u->flags |= FLG_URB1RUNNING;
-                else
-                        u->flags &= ~FLG_RUNNING;
-        }
-        if (u->syncpipe) {
-                if (u->flags & FLG_RUNNING && !(u->flags & FLG_SYNC0RUNNING)) {
-                        urb = u->surb[0].urb;
-                        urb->dev = dev;
-                        urb->pipe = u->syncpipe;
-                        urb->transfer_flags = URB_ISO_ASAP;
-                        urb->number_of_packets = SYNCFRAMES;
-                        urb->context = as;
-                        urb->complete = usbin_sync_completed;
-                        /* stride: u->syncinterval */
-                        if (!usbin_sync_prepare_desc(u, urb) && !usb_submit_urb(urb, GFP_KERNEL))
-                                u->flags |= FLG_SYNC0RUNNING;
-                        else
-                                u->flags &= ~FLG_RUNNING;
-                }
-                if (u->flags & FLG_RUNNING && !(u->flags & FLG_SYNC1RUNNING)) {
-                        urb = u->surb[1].urb;
-                        urb->dev = dev;
-                        urb->pipe = u->syncpipe;
-                        urb->transfer_flags = URB_ISO_ASAP;
-                        urb->number_of_packets = SYNCFRAMES;
-                        urb->context = as;
-                        urb->complete = usbin_sync_completed;
-                        /* stride: u->syncinterval */
-                        if (!usbin_sync_prepare_desc(u, urb) && !usb_submit_urb(urb, GFP_KERNEL))
-                                u->flags |= FLG_SYNC1RUNNING;
-                        else
-                                u->flags &= ~FLG_RUNNING;
-                }
-        }
-        spin_unlock_irqrestore(&as->lock, flags);
-        return 0;
-}
-
-static void usbout_stop(struct usb_audiodev *as)
-{
-        struct usbout *u = &as->usbout;
-        unsigned long flags;
-        unsigned int i, notkilled = 1;
-
-        spin_lock_irqsave(&as->lock, flags);
-        u->flags &= ~FLG_RUNNING;
-        i = u->flags;
-        spin_unlock_irqrestore(&as->lock, flags);
-        while (i & (FLG_URB0RUNNING|FLG_URB1RUNNING|FLG_SYNC0RUNNING|FLG_SYNC1RUNNING)) {
-                if (notkilled)
-                        schedule_timeout_interruptible(1);
-                else
-                        schedule_timeout_uninterruptible(1);
-                spin_lock_irqsave(&as->lock, flags);
-                i = u->flags;
-                spin_unlock_irqrestore(&as->lock, flags);
-                if (notkilled && signal_pending(current)) {
-                        if (i & FLG_URB0RUNNING)
-                                usb_kill_urb(u->durb[0].urb);
-                        if (i & FLG_URB1RUNNING)
-                                usb_kill_urb(u->durb[1].urb);
-                        if (i & FLG_SYNC0RUNNING)
-                                usb_kill_urb(u->surb[0].urb);
-                        if (i & FLG_SYNC1RUNNING)
-                                usb_kill_urb(u->surb[1].urb);
-                        notkilled = 0;
-                }
-        }
-        set_current_state(TASK_RUNNING);
-        kfree(u->durb[0].urb->transfer_buffer);
-        kfree(u->durb[1].urb->transfer_buffer);
-        kfree(u->surb[0].urb->transfer_buffer);
-        kfree(u->surb[1].urb->transfer_buffer);
-        u->durb[0].urb->transfer_buffer = u->durb[1].urb->transfer_buffer = 
-                u->surb[0].urb->transfer_buffer = u->surb[1].urb->transfer_buffer = NULL;
-}
-
-static inline void usbout_release(struct usb_audiodev *as)
-{
-        usbout_stop(as);
-}
-
-static void usbout_disc(struct usb_audiodev *as)
-{
-        struct usbout *u = &as->usbout;
-        unsigned long flags;
-
-        spin_lock_irqsave(&as->lock, flags);
-        u->flags &= ~(FLG_RUNNING | FLG_CONNECTED);
-        spin_unlock_irqrestore(&as->lock, flags);
-        usbout_stop(as);
-}
-
-static void usbout_convert(struct usbout *u, unsigned char *buffer, unsigned int samples)
-{
-        union {
-                __s16 s[64];
-                unsigned char b[0];
-        } tmp;
-        unsigned int scnt, maxs, ufmtsh, dfmtsh;
-
-        ufmtsh = AFMT_BYTESSHIFT(u->format);
-        dfmtsh = AFMT_BYTESSHIFT(u->dma.format);
-        maxs = (AFMT_ISSTEREO(u->dma.format | u->format)) ? 32 : 64;
-        while (samples > 0) {
-                scnt = samples;
-                if (scnt > maxs)
-                        scnt = maxs;
-                dmabuf_copyout(&u->dma, tmp.b, scnt << dfmtsh);
-                conversion(tmp.b, u->dma.format, buffer, u->format, tmp.b, scnt);
-                buffer += scnt << ufmtsh;
-                samples -= scnt;
-        }
-}               
-
-static int usbout_prepare_desc(struct usbout *u, struct urb *urb)
-{
-        unsigned int i, ufmtsh, dfmtsh, err = 0, cnt, scnt, offs;
-        unsigned char *cp = urb->transfer_buffer;
-
-        ufmtsh = AFMT_BYTESSHIFT(u->format);
-        dfmtsh = AFMT_BYTESSHIFT(u->dma.format);
-        for (i = offs = 0; i < DESCFRAMES; i++) {
-                urb->iso_frame_desc[i].offset = offs;
-                u->phase = (u->phase & 0x3fff) + u->freqm;
-                scnt = u->phase >> 14;
-                if (!scnt) {
-                        urb->iso_frame_desc[i].length = 0;
-                        continue;
-                }
-                cnt = scnt << dfmtsh;
-                if (!u->dma.mapped) {
-                        if (cnt > u->dma.count) {
-                                scnt = u->dma.count >> dfmtsh;
-                                cnt = scnt << dfmtsh;
-                                err++;
-                        }
-                        u->dma.count -= cnt;
-                } else
-                        u->dma.count += cnt;
-                if (u->format == u->dma.format) {
-                        /* we do not need format conversion */
-                        dmabuf_copyout(&u->dma, cp, cnt);
-                } else {
-                        /* we need sampling format conversion */
-                        usbout_convert(u, cp, scnt);
-                }
-                cnt = scnt << ufmtsh;
-                urb->iso_frame_desc[i].length = cnt;
-                offs += cnt;
-                cp += cnt;
-        }
-        urb->interval = 1;
-        if (err)
-                u->dma.error++;
-        if (u->dma.mapped) {
-                if (u->dma.count >= (signed)u->dma.fragsize)
-                        wake_up(&u->dma.wait);
-        } else {
-                if ((signed)u->dma.dmasize >= u->dma.count + (signed)u->dma.fragsize)
-                        wake_up(&u->dma.wait);
-        }
-        return err ? -1 : 0;
-}
-
-/*
- * return value: 0 if descriptor should be restarted, -1 otherwise
- */
-static int usbout_retire_desc(struct usbout *u, struct urb *urb)
-{
-        unsigned int i;
-
-        for (i = 0; i < DESCFRAMES; i++) {
-                if (urb->iso_frame_desc[i].status) {
-                        dprintk((KERN_DEBUG "usbout_retire_desc: frame %u status %d\n", i, urb->iso_frame_desc[i].status));
-                        continue;
-                }
-        }
-        return 0;
-}
-
-static void usbout_completed(struct urb *urb, struct pt_regs *regs)
-{
-        struct usb_audiodev *as = (struct usb_audiodev *)urb->context;
-        struct usbout *u = &as->usbout;
-        unsigned long flags;
-        unsigned int mask;
-        int suret = 0;
-
-#if 0
-        printk(KERN_DEBUG "usbout_completed: status %d errcnt %d flags 0x%x\n", urb->status, urb->error_count, u->flags);
-#endif
-        if (urb == u->durb[0].urb)
-                mask = FLG_URB0RUNNING;
-        else if (urb == u->durb[1].urb)
-                mask = FLG_URB1RUNNING;
-        else {
-                mask = 0;
-                printk(KERN_ERR "usbout_completed: panic: unknown URB\n");
-        }
-        urb->dev = as->state->usbdev;
-        spin_lock_irqsave(&as->lock, flags);
-        if (!usbout_retire_desc(u, urb) &&
-            u->flags & FLG_RUNNING &&
-            !usbout_prepare_desc(u, urb) && 
-            (suret = usb_submit_urb(urb, GFP_ATOMIC)) == 0) {
-                u->flags |= mask;
-        } else {
-                u->flags &= ~(mask | FLG_RUNNING);
-                wake_up(&u->dma.wait);
-                dprintk((KERN_DEBUG "usbout_completed: descriptor not restarted (usb_submit_urb: %d)\n", suret));
-        }
-        spin_unlock_irqrestore(&as->lock, flags);
-}
-
-static int usbout_sync_prepare_desc(struct usbout *u, struct urb *urb)
-{
-        unsigned int i, offs;
-
-        for (i = offs = 0; i < SYNCFRAMES; i++, offs += 3) {
-                urb->iso_frame_desc[i].length = 3;
-                urb->iso_frame_desc[i].offset = offs;
-        }
-        urb->interval = 1;
-        return 0;
-}
-
-/*
- * return value: 0 if descriptor should be restarted, -1 otherwise
- */
-static int usbout_sync_retire_desc(struct usbout *u, struct urb *urb)
-{
-        unsigned char *cp = urb->transfer_buffer;
-        unsigned int f, i;
-
-        for (i = 0; i < SYNCFRAMES; i++, cp += 3) {
-                if (urb->iso_frame_desc[i].status) {
-                        dprintk((KERN_DEBUG "usbout_sync_retire_desc: frame %u status %d\n", i, urb->iso_frame_desc[i].status));
-                        continue;
-                }
-                if (urb->iso_frame_desc[i].actual_length < 3) {
-                        dprintk((KERN_DEBUG "usbout_sync_retire_desc: frame %u length %d\n", i, urb->iso_frame_desc[i].actual_length));
-                        continue;
-                }
-                f = cp[0] | (cp[1] << 8) | (cp[2] << 16);
-                if (abs(f - u->freqn) > (u->freqn >> 3) || f > u->freqmax) {
-                        printk(KERN_WARNING "usbout_sync_retire_desc: requested frequency %u (nominal %u) out of range!\n", f, u->freqn);
-                        continue;
-                }
-                u->freqm = f;
-        }
-        return 0;
-}
-
-static void usbout_sync_completed(struct urb *urb, struct pt_regs *regs)
-{
-        struct usb_audiodev *as = (struct usb_audiodev *)urb->context;
-        struct usbout *u = &as->usbout;
-        unsigned long flags;
-        unsigned int mask;
-        int suret = 0;
-
-#if 0
-        printk(KERN_DEBUG "usbout_sync_completed: status %d errcnt %d flags 0x%x\n", urb->status, urb->error_count, u->flags);
-#endif
-        if (urb == u->surb[0].urb)
-                mask = FLG_SYNC0RUNNING;
-        else if (urb == u->surb[1].urb)
-                mask = FLG_SYNC1RUNNING;
-        else {
-                mask = 0;
-                printk(KERN_ERR "usbout_sync_completed: panic: unknown URB\n");
-        }
-        urb->dev = as->state->usbdev;
-        spin_lock_irqsave(&as->lock, flags);
-        if (!usbout_sync_retire_desc(u, urb) &&
-            u->flags & FLG_RUNNING &&
-            !usbout_sync_prepare_desc(u, urb) && 
-            (suret = usb_submit_urb(urb, GFP_ATOMIC)) == 0) {
-                u->flags |= mask;
-        } else {
-                u->flags &= ~(mask | FLG_RUNNING);
-                wake_up(&u->dma.wait);
-                dprintk((KERN_DEBUG "usbout_sync_completed: descriptor not restarted (usb_submit_urb: %d)\n", suret));
-        }
-        spin_unlock_irqrestore(&as->lock, flags);
-}
-
-static int usbout_start(struct usb_audiodev *as)
-{
-        struct usb_device *dev = as->state->usbdev;
-        struct usbout *u = &as->usbout;
-        struct urb *urb;
-        unsigned long flags;
-        unsigned int maxsze, bufsz;
-
-#if 0
-        printk(KERN_DEBUG "usbout_start: device %d ufmt 0x%08x dfmt 0x%08x srate %d\n",
-               dev->devnum, u->format, u->dma.format, u->dma.srate);
-#endif
-        /* allocate USB storage if not already done */
-        spin_lock_irqsave(&as->lock, flags);
-        if (!(u->flags & FLG_CONNECTED)) {
-                spin_unlock_irqrestore(&as->lock, flags);
-                return -EIO;
-        }
-        if (!(u->flags & FLG_RUNNING)) {
-                spin_unlock_irqrestore(&as->lock, flags);
-                u->freqn = u->freqm = ((u->dma.srate << 11) + 62) / 125; /* this will overflow at approx 2MSPS */
-                u->freqmax = u->freqn + (u->freqn >> 2);
-                u->phase = 0;
-                maxsze = (u->freqmax + 0x3fff) >> (14 - AFMT_BYTESSHIFT(u->format));
-                bufsz = DESCFRAMES * maxsze;
-                kfree(u->durb[0].urb->transfer_buffer);
-                u->durb[0].urb->transfer_buffer = kmalloc(bufsz, GFP_KERNEL);
-                u->durb[0].urb->transfer_buffer_length = bufsz;
-                kfree(u->durb[1].urb->transfer_buffer);
-                u->durb[1].urb->transfer_buffer = kmalloc(bufsz, GFP_KERNEL);
-                u->durb[1].urb->transfer_buffer_length = bufsz;
-                if (u->syncpipe) {
-                        kfree(u->surb[0].urb->transfer_buffer);
-                        u->surb[0].urb->transfer_buffer = kmalloc(3*SYNCFRAMES, GFP_KERNEL);
-                        u->surb[0].urb->transfer_buffer_length = 3*SYNCFRAMES;
-                        kfree(u->surb[1].urb->transfer_buffer);
-                        u->surb[1].urb->transfer_buffer = kmalloc(3*SYNCFRAMES, GFP_KERNEL);
-                        u->surb[1].urb->transfer_buffer_length = 3*SYNCFRAMES;
-                }
-                if (!u->durb[0].urb->transfer_buffer || !u->durb[1].urb->transfer_buffer || 
-                    (u->syncpipe && (!u->surb[0].urb->transfer_buffer || !u->surb[1].urb->transfer_buffer))) {
-                        printk(KERN_ERR "usbaudio: cannot start playback device %d\n", dev->devnum);
-                        return 0;
-                }
-                spin_lock_irqsave(&as->lock, flags);
-        }
-        if (u->dma.count <= 0 && !u->dma.mapped) {
-                spin_unlock_irqrestore(&as->lock, flags);
-                return 0;
-        }
-        u->flags |= FLG_RUNNING;
-        if (!(u->flags & FLG_URB0RUNNING)) {
-                urb = u->durb[0].urb;
-                urb->dev = dev;
-                urb->pipe = u->datapipe;
-                urb->transfer_flags = URB_ISO_ASAP;
-                urb->number_of_packets = DESCFRAMES;
-                urb->context = as;
-                urb->complete = usbout_completed;
-                if (!usbout_prepare_desc(u, urb) && !usb_submit_urb(urb, GFP_ATOMIC))
-                        u->flags |= FLG_URB0RUNNING;
-                else
-                        u->flags &= ~FLG_RUNNING;
-        }
-        if (u->flags & FLG_RUNNING && !(u->flags & FLG_URB1RUNNING)) {
-                urb = u->durb[1].urb;
-                urb->dev = dev;
-                urb->pipe = u->datapipe;
-                urb->transfer_flags = URB_ISO_ASAP;
-                urb->number_of_packets = DESCFRAMES;
-                urb->context = as;
-                urb->complete = usbout_completed;
-                if (!usbout_prepare_desc(u, urb) && !usb_submit_urb(urb, GFP_ATOMIC))
-                        u->flags |= FLG_URB1RUNNING;
-                else
-                        u->flags &= ~FLG_RUNNING;
-        }
-        if (u->syncpipe) {
-                if (u->flags & FLG_RUNNING && !(u->flags & FLG_SYNC0RUNNING)) {
-                        urb = u->surb[0].urb;
-                        urb->dev = dev;
-                        urb->pipe = u->syncpipe;
-                        urb->transfer_flags = URB_ISO_ASAP;
-                        urb->number_of_packets = SYNCFRAMES;
-                        urb->context = as;
-                        urb->complete = usbout_sync_completed;
-                        /* stride: u->syncinterval */
-                        if (!usbout_sync_prepare_desc(u, urb) && !usb_submit_urb(urb, GFP_ATOMIC))
-                                u->flags |= FLG_SYNC0RUNNING;
-                        else
-                                u->flags &= ~FLG_RUNNING;
-                }
-                if (u->flags & FLG_RUNNING && !(u->flags & FLG_SYNC1RUNNING)) {
-                        urb = u->surb[1].urb;
-                        urb->dev = dev;
-                        urb->pipe = u->syncpipe;
-                        urb->transfer_flags = URB_ISO_ASAP;
-                        urb->number_of_packets = SYNCFRAMES;
-                        urb->context = as;
-                        urb->complete = usbout_sync_completed;
-                        /* stride: u->syncinterval */
-                        if (!usbout_sync_prepare_desc(u, urb) && !usb_submit_urb(urb, GFP_ATOMIC))
-                                u->flags |= FLG_SYNC1RUNNING;
-                        else
-                                u->flags &= ~FLG_RUNNING;
-                }
-        }
-        spin_unlock_irqrestore(&as->lock, flags);
-        return 0;
-}
-
-/* --------------------------------------------------------------------- */
-
-static unsigned int format_goodness(struct audioformat *afp, unsigned int fmt, unsigned int srate)
-{
-        unsigned int g = 0;
-
-        if (srate < afp->sratelo)
-                g += afp->sratelo - srate;
-        if (srate > afp->sratehi)
-                g += srate - afp->sratehi;
-        if (AFMT_ISSTEREO(afp->format) && !AFMT_ISSTEREO(fmt))
-                g += 0x100000;
-        if (!AFMT_ISSTEREO(afp->format) && AFMT_ISSTEREO(fmt))
-                g += 0x400000;
-        if (AFMT_IS16BIT(afp->format) && !AFMT_IS16BIT(fmt))
-                g += 0x100000;
-        if (!AFMT_IS16BIT(afp->format) && AFMT_IS16BIT(fmt))
-                g += 0x400000;
-        return g;
-}
-
-static int find_format(struct audioformat *afp, unsigned int nr, unsigned int fmt, unsigned int srate)
-{
-        unsigned int i, g, gb = ~0;
-        int j = -1; /* default to failure */
-
-        /* find "best" format (according to format_goodness) */
-        for (i = 0; i < nr; i++) {
-                g = format_goodness(&afp[i], fmt, srate);
-                if (g >= gb) 
-                        continue;
-                j = i;
-                gb = g;
-        }
-        return j;
-}
-
-static int set_format_in(struct usb_audiodev *as)
-{
-        struct usb_device *dev = as->state->usbdev;
-        struct usb_host_interface *alts;
-        struct usb_interface *iface;
-        struct usbin *u = &as->usbin;
-        struct dmabuf *d = &u->dma;
-        struct audioformat *fmt;
-        unsigned int ep;
-        unsigned char data[3];
-        int fmtnr, ret;
-
-        iface = usb_ifnum_to_if(dev, u->interface);
-        if (!iface)
-                return 0;
-
-        fmtnr = find_format(as->fmtin, as->numfmtin, d->format, d->srate);
-        if (fmtnr < 0) {
-                printk(KERN_ERR "usbaudio: set_format_in(): failed to find desired format/speed combination.\n");
-                return -1;
-        }
-
-        fmt = as->fmtin + fmtnr;
-        alts = usb_altnum_to_altsetting(iface, fmt->altsetting);
-        u->format = fmt->format;
-        u->datapipe = usb_rcvisocpipe(dev, alts->endpoint[0].desc.bEndpointAddress & 0xf);
-        u->syncpipe = u->syncinterval = 0;
-        if ((alts->endpoint[0].desc.bmAttributes & 0x0c) == 0x08) {
-                if (alts->desc.bNumEndpoints < 2 ||
-                    alts->endpoint[1].desc.bmAttributes != 0x01 ||
-                    alts->endpoint[1].desc.bSynchAddress != 0 ||
-                    alts->endpoint[1].desc.bEndpointAddress != (alts->endpoint[0].desc.bSynchAddress & 0x7f)) {
-                        printk(KERN_WARNING "usbaudio: device %d interface %d altsetting %d claims adaptive in "
-                               "but has invalid synch pipe; treating as asynchronous in\n",
-                               dev->devnum, u->interface, fmt->altsetting);
-                } else {
-                        u->syncpipe = usb_sndisocpipe(dev, alts->endpoint[1].desc.bEndpointAddress & 0xf);
-                        u->syncinterval = alts->endpoint[1].desc.bRefresh;
-                }
-        }
-        if (d->srate < fmt->sratelo)
-                d->srate = fmt->sratelo;
-        if (d->srate > fmt->sratehi)
-                d->srate = fmt->sratehi;
-        dprintk((KERN_DEBUG "usbaudio: set_format_in: usb_set_interface %u %u\n",
-                        u->interface, fmt->altsetting));
-        if (usb_set_interface(dev, alts->desc.bInterfaceNumber, fmt->altsetting) < 0) {
-                printk(KERN_WARNING "usbaudio: usb_set_interface failed, device %d interface %d altsetting %d\n",
-                       dev->devnum, u->interface, fmt->altsetting);
-                return -1;
-        }
-        if (fmt->sratelo == fmt->sratehi)
-                return 0;
-        ep = usb_pipeendpoint(u->datapipe) | (u->datapipe & USB_DIR_IN);
-        /* if endpoint has pitch control, enable it */
-        if (fmt->attributes & 0x02) {
-                data[0] = 1;
-                if ((ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR, USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT, 
-                                           PITCH_CONTROL << 8, ep, data, 1, 1000)) < 0) {
-                        printk(KERN_ERR "usbaudio: failure (error %d) to set output pitch control device %d interface %u endpoint 0x%x to %u\n",
-                               ret, dev->devnum, u->interface, ep, d->srate);
-                        return -1;
-                }
-        }
-        /* if endpoint has sampling rate control, set it */
-        if (fmt->attributes & 0x01) {
-                data[0] = d->srate;
-                data[1] = d->srate >> 8;
-                data[2] = d->srate >> 16;
-                if ((ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR, USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT, 
-                                           SAMPLING_FREQ_CONTROL << 8, ep, data, 3, 1000)) < 0) {
-                        printk(KERN_ERR "usbaudio: failure (error %d) to set input sampling frequency device %d interface %u endpoint 0x%x to %u\n",
-                               ret, dev->devnum, u->interface, ep, d->srate);
-                        return -1;
-                }
-                if ((ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_CUR, USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_IN,
-                                           SAMPLING_FREQ_CONTROL << 8, ep, data, 3, 1000)) < 0) {
-                        printk(KERN_ERR "usbaudio: failure (error %d) to get input sampling frequency device %d interface %u endpoint 0x%x\n",
-                               ret, dev->devnum, u->interface, ep);
-                        return -1;
-                }
-                dprintk((KERN_DEBUG "usbaudio: set_format_in: device %d interface %d altsetting %d srate req: %u real %u\n",
-                        dev->devnum, u->interface, fmt->altsetting, d->srate, data[0] | (data[1] << 8) | (data[2] << 16)));
-                d->srate = data[0] | (data[1] << 8) | (data[2] << 16);
-        }
-        dprintk((KERN_DEBUG "usbaudio: set_format_in: USB format 0x%x, DMA format 0x%x srate %u\n", u->format, d->format, d->srate));
-        return 0;
-}
-
-static int set_format_out(struct usb_audiodev *as)
-{
-        struct usb_device *dev = as->state->usbdev;
-        struct usb_host_interface *alts;
-        struct usb_interface *iface;    
-        struct usbout *u = &as->usbout;
-        struct dmabuf *d = &u->dma;
-        struct audioformat *fmt;
-        unsigned int ep;
-        unsigned char data[3];
-        int fmtnr, ret;
-
-        iface = usb_ifnum_to_if(dev, u->interface);
-        if (!iface)
-                return 0;
-
-        fmtnr = find_format(as->fmtout, as->numfmtout, d->format, d->srate);
-        if (fmtnr < 0) {
-                printk(KERN_ERR "usbaudio: set_format_out(): failed to find desired format/speed combination.\n");
-                return -1;
-        }
-
-        fmt = as->fmtout + fmtnr;
-        u->format = fmt->format;
-        alts = usb_altnum_to_altsetting(iface, fmt->altsetting);
-        u->datapipe = usb_sndisocpipe(dev, alts->endpoint[0].desc.bEndpointAddress & 0xf);
-        u->syncpipe = u->syncinterval = 0;
-        if ((alts->endpoint[0].desc.bmAttributes & 0x0c) == 0x04) {
-#if 0
-                printk(KERN_DEBUG "bNumEndpoints 0x%02x endpoint[1].bmAttributes 0x%02x\n"
-                       KERN_DEBUG "endpoint[1].bSynchAddress 0x%02x endpoint[1].bEndpointAddress 0x%02x\n"
-                       KERN_DEBUG "endpoint[0].bSynchAddress 0x%02x\n", alts->bNumEndpoints,
-                       alts->endpoint[1].bmAttributes, alts->endpoint[1].bSynchAddress,
-                       alts->endpoint[1].bEndpointAddress, alts->endpoint[0].bSynchAddress);
-#endif
-                if (alts->desc.bNumEndpoints < 2 ||
-                    alts->endpoint[1].desc.bmAttributes != 0x01 ||
-                    alts->endpoint[1].desc.bSynchAddress != 0 ||
-                    alts->endpoint[1].desc.bEndpointAddress != (alts->endpoint[0].desc.bSynchAddress | 0x80)) {
-                        printk(KERN_WARNING "usbaudio: device %d interface %d altsetting %d claims asynch out "
-                               "but has invalid synch pipe; treating as adaptive out\n",
-                               dev->devnum, u->interface, fmt->altsetting);
-                } else {
-                        u->syncpipe = usb_rcvisocpipe(dev, alts->endpoint[1].desc.bEndpointAddress & 0xf);
-                        u->syncinterval = alts->endpoint[1].desc.bRefresh;
-                }
-        }
-        if (d->srate < fmt->sratelo)
-                d->srate = fmt->sratelo;
-        if (d->srate > fmt->sratehi)
-                d->srate = fmt->sratehi;
-        dprintk((KERN_DEBUG "usbaudio: set_format_out: usb_set_interface %u %u\n",
-                        u->interface, fmt->altsetting));
-        if (usb_set_interface(dev, u->interface, fmt->altsetting) < 0) {
-                printk(KERN_WARNING "usbaudio: usb_set_interface failed, device %d interface %d altsetting %d\n",
-                       dev->devnum, u->interface, fmt->altsetting);
-                return -1;
-        }
-        if (fmt->sratelo == fmt->sratehi)
-                return 0;
-        ep = usb_pipeendpoint(u->datapipe) | (u->datapipe & USB_DIR_IN);
-        /* if endpoint has pitch control, enable it */
-        if (fmt->attributes & 0x02) {
-                data[0] = 1;
-                if ((ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR, USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT, 
-                                           PITCH_CONTROL << 8, ep, data, 1, 1000)) < 0) {
-                        printk(KERN_ERR "usbaudio: failure (error %d) to set output pitch control device %d interface %u endpoint 0x%x to %u\n",
-                               ret, dev->devnum, u->interface, ep, d->srate);
-                        return -1;
-                }
-        }
-        /* if endpoint has sampling rate control, set it */
-        if (fmt->attributes & 0x01) {
-                data[0] = d->srate;
-                data[1] = d->srate >> 8;
-                data[2] = d->srate >> 16;
-                if ((ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR, USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT, 
-                                           SAMPLING_FREQ_CONTROL << 8, ep, data, 3, 1000)) < 0) {
-                        printk(KERN_ERR "usbaudio: failure (error %d) to set output sampling frequency device %d interface %u endpoint 0x%x to %u\n",
-                               ret, dev->devnum, u->interface, ep, d->srate);
-                        return -1;
-                }
-                if ((ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_CUR, USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_IN,
-                                           SAMPLING_FREQ_CONTROL << 8, ep, data, 3, 1000)) < 0) {
-                        printk(KERN_ERR "usbaudio: failure (error %d) to get output sampling frequency device %d interface %u endpoint 0x%x\n",
-                               ret, dev->devnum, u->interface, ep);
-                        return -1;
-                }
-                dprintk((KERN_DEBUG "usbaudio: set_format_out: device %d interface %d altsetting %d srate req: %u real %u\n",
-                        dev->devnum, u->interface, fmt->altsetting, d->srate, data[0] | (data[1] << 8) | (data[2] << 16)));
-                d->srate = data[0] | (data[1] << 8) | (data[2] << 16);
-        }
-        dprintk((KERN_DEBUG "usbaudio: set_format_out: USB format 0x%x, DMA format 0x%x srate %u\n", u->format, d->format, d->srate));
-        return 0;
-}
-
-static int set_format(struct usb_audiodev *s, unsigned int fmode, unsigned int fmt, unsigned int srate)
-{
-        int ret1 = 0, ret2 = 0;
-
-        if (!(fmode & (FMODE_READ|FMODE_WRITE)))
-                return -EINVAL;
-        if (fmode & FMODE_READ) {
-                usbin_stop(s);
-                s->usbin.dma.ready = 0;
-                if (fmt == AFMT_QUERY)
-                        fmt = s->usbin.dma.format;
-                else
-                        s->usbin.dma.format = fmt;
-                if (!srate)
-                        srate = s->usbin.dma.srate;
-                else
-                        s->usbin.dma.srate = srate;
-        }
-        if (fmode & FMODE_WRITE) {
-                usbout_stop(s);
-                s->usbout.dma.ready = 0;
-                if (fmt == AFMT_QUERY)
-                        fmt = s->usbout.dma.format;
-                else
-                        s->usbout.dma.format = fmt;
-                if (!srate)
-                        srate = s->usbout.dma.srate;
-                else
-                        s->usbout.dma.srate = srate;
-        }
-        if (fmode & FMODE_READ)
-                ret1 = set_format_in(s);
-        if (fmode & FMODE_WRITE)
-                ret2 = set_format_out(s);
-        return ret1 ? ret1 : ret2;
-}
-
-/* --------------------------------------------------------------------- */
-
-static int wrmixer(struct usb_mixerdev *ms, unsigned mixch, unsigned value)
-{
-        struct usb_device *dev = ms->state->usbdev;
-        unsigned char data[2];
-        struct mixerchannel *ch;
-        int v1, v2, v3;
-
-        if (mixch >= ms->numch)
-                return -1;
-        ch = &ms->ch[mixch];
-        v3 = ch->maxval - ch->minval;
-        v1 = value & 0xff;
-        v2 = (value >> 8) & 0xff;
-        if (v1 > 100)
-                v1 = 100;
-        if (v2 > 100)
-                v2 = 100;
-        if (!(ch->flags & (MIXFLG_STEREOIN | MIXFLG_STEREOOUT)))
-                v2 = v1;
-        ch->value = v1 | (v2 << 8);
-        v1 = (v1 * v3) / 100 + ch->minval;
-        v2 = (v2 * v3) / 100 + ch->minval;
-        switch (ch->selector) {
-        case 0:  /* mixer unit request */
-                data[0] = v1;
-                data[1] = v1 >> 8;
-                if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
-                                    (ch->chnum << 8) | 1, ms->iface | (ch->unitid << 8), data, 2, 1000) < 0)
-                        goto err;
-                if (!(ch->flags & (MIXFLG_STEREOIN | MIXFLG_STEREOOUT)))
-                        return 0;
-                data[0] = v2;
-                data[1] = v2 >> 8;
-                if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
-                                    ((ch->chnum + !!(ch->flags & MIXFLG_STEREOIN)) << 8) | (1 + !!(ch->flags & MIXFLG_STEREOOUT)),
-                                    ms->iface | (ch->unitid << 8), data, 2, 1000) < 0)
-                        goto err;
-                return 0;
-
-                /* various feature unit controls */
-        case VOLUME_CONTROL:
-                data[0] = v1;
-                data[1] = v1 >> 8;
-                if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
-                                    (ch->selector << 8) | ch->chnum, ms->iface | (ch->unitid << 8), data, 2, 1000) < 0)
-                        goto err;
-                if (!(ch->flags & (MIXFLG_STEREOIN | MIXFLG_STEREOOUT)))
-                        return 0;
-                data[0] = v2;
-                data[1] = v2 >> 8;
-                if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
-                                    (ch->selector << 8) | (ch->chnum + 1), ms->iface | (ch->unitid << 8), data, 2, 1000) < 0)
-                        goto err;
-                return 0;
-                
-        case BASS_CONTROL:
-        case MID_CONTROL:
-        case TREBLE_CONTROL:
-                data[0] = v1 >> 8;
-                if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
-                                    (ch->selector << 8) | ch->chnum, ms->iface | (ch->unitid << 8), data, 1, 1000) < 0)
-                        goto err;
-                if (!(ch->flags & (MIXFLG_STEREOIN | MIXFLG_STEREOOUT)))
-                        return 0;
-                data[0] = v2 >> 8;
-                if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
-                                    (ch->selector << 8) | (ch->chnum + 1), ms->iface | (ch->unitid << 8), data, 1, 1000) < 0)
-                        goto err;
-                return 0;
-
-        default:
-                return -1;
-        }
-        return 0;
-
- err:
-        printk(KERN_ERR "usbaudio: mixer request device %u if %u unit %u ch %u selector %u failed\n", 
-                dev->devnum, ms->iface, ch->unitid, ch->chnum, ch->selector);
-        return -1;
-}
-
-static int get_rec_src(struct usb_mixerdev *ms)
-{
-        struct usb_device *dev = ms->state->usbdev;
-        unsigned int mask = 0, retmask = 0;
-        unsigned int i, j;
-        unsigned char buf;
-        int err = 0;
-
-        for (i = 0; i < ms->numch; i++) {
-                if (!ms->ch[i].slctunitid || (mask & (1 << i)))
-                        continue;
-                if (usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
-                                    0, ms->iface | (ms->ch[i].slctunitid << 8), &buf, 1, 1000) < 0) {
-                        err = -EIO;
-                        printk(KERN_ERR "usbaudio: selector read request device %u if %u unit %u failed\n", 
-                               dev->devnum, ms->iface, ms->ch[i].slctunitid & 0xff);
-                        continue;
-                }
-                for (j = i; j < ms->numch; j++) {
-                        if ((ms->ch[i].slctunitid ^ ms->ch[j].slctunitid) & 0xff)
-                                continue;
-                        mask |= 1 << j;
-                        if (buf == (ms->ch[j].slctunitid >> 8))
-                                retmask |= 1 << ms->ch[j].osschannel;
-                }
-        }
-        if (err)
-                return -EIO;
-        return retmask;
-}
-
-static int set_rec_src(struct usb_mixerdev *ms, int srcmask)
-{
-        struct usb_device *dev = ms->state->usbdev;
-        unsigned int mask = 0, smask, bmask;
-        unsigned int i, j;
-        unsigned char buf;
-        int err = 0;
-
-        for (i = 0; i < ms->numch; i++) {
-                if (!ms->ch[i].slctunitid || (mask & (1 << i)))
-                        continue;
-                if (usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
-                                    0, ms->iface | (ms->ch[i].slctunitid << 8), &buf, 1, 1000) < 0) {
-                        err = -EIO;
-                        printk(KERN_ERR "usbaudio: selector read request device %u if %u unit %u failed\n", 
-                               dev->devnum, ms->iface, ms->ch[i].slctunitid & 0xff);
-                        continue;
-                }
-                /* first generate smask */
-                smask = bmask = 0;
-                for (j = i; j < ms->numch; j++) {
-                        if ((ms->ch[i].slctunitid ^ ms->ch[j].slctunitid) & 0xff)
-                                continue;
-                        smask |= 1 << ms->ch[j].osschannel;
-                        if (buf == (ms->ch[j].slctunitid >> 8))
-                                bmask |= 1 << ms->ch[j].osschannel;
-                        mask |= 1 << j;
-                }
-                /* check for multiple set sources */
-                j = hweight32(srcmask & smask);
-                if (j == 0)
-                        continue;
-                if (j > 1)
-                        srcmask &= ~bmask;
-                for (j = i; j < ms->numch; j++) {
-                        if ((ms->ch[i].slctunitid ^ ms->ch[j].slctunitid) & 0xff)
-                                continue;
-                        if (!(srcmask & (1 << ms->ch[j].osschannel)))
-                                continue;
-                        buf = ms->ch[j].slctunitid >> 8;
-                        if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
-                                    0, ms->iface | (ms->ch[j].slctunitid << 8), &buf, 1, 1000) < 0) {
-                                err = -EIO;
-                                printk(KERN_ERR "usbaudio: selector write request device %u if %u unit %u failed\n", 
-                                       dev->devnum, ms->iface, ms->ch[j].slctunitid & 0xff);
-                                continue;
-                        }
-                }
-        }
-        return err ? -EIO : 0;
-}
-
-/* --------------------------------------------------------------------- */
-
-/*
- * should be called with open_sem hold, so that no new processes
- * look at the audio device to be destroyed
- */
-
-static void release(struct usb_audio_state *s)
-{
-        struct usb_audiodev *as;
-        struct usb_mixerdev *ms;
-
-        s->count--;
-        if (s->count) {
-                up(&open_sem);
-                return;
-        }
-        up(&open_sem);
-        wake_up(&open_wait);
-        while (!list_empty(&s->audiolist)) {
-                as = list_entry(s->audiolist.next, struct usb_audiodev, list);
-                list_del(&as->list);
-                usbin_release(as);
-                usbout_release(as);
-                dmabuf_release(&as->usbin.dma);
-                dmabuf_release(&as->usbout.dma);
-                usb_free_urb(as->usbin.durb[0].urb);
-                usb_free_urb(as->usbin.durb[1].urb);
-                usb_free_urb(as->usbin.surb[0].urb);
-                usb_free_urb(as->usbin.surb[1].urb);
-                usb_free_urb(as->usbout.durb[0].urb);
-                usb_free_urb(as->usbout.durb[1].urb);
-                usb_free_urb(as->usbout.surb[0].urb);
-                usb_free_urb(as->usbout.surb[1].urb);
-                kfree(as);
-        }
-        while (!list_empty(&s->mixerlist)) {
-                ms = list_entry(s->mixerlist.next, struct usb_mixerdev, list);
-                list_del(&ms->list);
-                kfree(ms);
-        }
-        kfree(s);
-}
-
-static inline int prog_dmabuf_in(struct usb_audiodev *as)
-{
-        usbin_stop(as);
-        return dmabuf_init(&as->usbin.dma);
-}
-
-static inline int prog_dmabuf_out(struct usb_audiodev *as)
-{
-        usbout_stop(as);
-        return dmabuf_init(&as->usbout.dma);
-}
-
-/* --------------------------------------------------------------------- */
-
-static int usb_audio_open_mixdev(struct inode *inode, struct file *file)
-{
-        unsigned int minor = iminor(inode);
-        struct usb_mixerdev *ms;
-        struct usb_audio_state *s;
-
-        down(&open_sem);
-        list_for_each_entry(s, &audiodevs, audiodev) {
-                list_for_each_entry(ms, &s->mixerlist, list) {
-                        if (ms->dev_mixer == minor)
-                                goto mixer_found;
-                }
-        }
-        up(&open_sem);
-        return -ENODEV;
-
- mixer_found:
-        if (!s->usbdev) {
-                up(&open_sem);
-                return -EIO;
-        }
-        file->private_data = ms;
-        s->count++;
-
-        up(&open_sem);
-        return nonseekable_open(inode, file);
-}
-
-static int usb_audio_release_mixdev(struct inode *inode, struct file *file)
-{
-        struct usb_mixerdev *ms = (struct usb_mixerdev *)file->private_data;
-        struct usb_audio_state *s;
-
-        lock_kernel();
-        s = ms->state;
-        down(&open_sem);
-        release(s);
-        unlock_kernel();
-        return 0;
-}
-
-static int usb_audio_ioctl_mixdev(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
-{
-        struct usb_mixerdev *ms = (struct usb_mixerdev *)file->private_data;
-        int i, j, val;
-        int __user *user_arg = (int __user *)arg;
-
-        if (!ms->state->usbdev)
-                return -ENODEV;
-  
-        if (cmd == SOUND_MIXER_INFO) {
-                mixer_info info;
-
-                memset(&info, 0, sizeof(info));
-                strncpy(info.id, "USB_AUDIO", sizeof(info.id));
-                strncpy(info.name, "USB Audio Class Driver", sizeof(info.name));
-                info.modify_counter = ms->modcnt;
-                if (copy_to_user((void __user *)arg, &info, sizeof(info)))
-                        return -EFAULT;
-                return 0;
-        }
-        if (cmd == SOUND_OLD_MIXER_INFO) {
-                _old_mixer_info info;
-
-                memset(&info, 0, sizeof(info));
-                strncpy(info.id, "USB_AUDIO", sizeof(info.id));
-                strncpy(info.name, "USB Audio Class Driver", sizeof(info.name));
-                if (copy_to_user((void __user *)arg, &info, sizeof(info)))
-                        return -EFAULT;
-                return 0;
-        }
-        if (cmd == OSS_GETVERSION)
-                return put_user(SOUND_VERSION, user_arg);
-        if (_IOC_TYPE(cmd) != 'M' || _IOC_SIZE(cmd) != sizeof(int))
-                return -EINVAL;
-        if (_IOC_DIR(cmd) == _IOC_READ) {
-                switch (_IOC_NR(cmd)) {
-                case SOUND_MIXER_RECSRC: /* Arg contains a bit for each recording source */
-                        val = get_rec_src(ms);
-                        if (val < 0)
-                                return val;
-                        return put_user(val, user_arg);
-
-                case SOUND_MIXER_DEVMASK: /* Arg contains a bit for each supported device */
-                        for (val = i = 0; i < ms->numch; i++)
-                                val |= 1 << ms->ch[i].osschannel;
-                        return put_user(val, user_arg);
-
-                case SOUND_MIXER_RECMASK: /* Arg contains a bit for each supported recording source */
-                        for (val = i = 0; i < ms->numch; i++)
-                                if (ms->ch[i].slctunitid)
-                                        val |= 1 << ms->ch[i].osschannel;
-                        return put_user(val, user_arg);
-
-                case SOUND_MIXER_STEREODEVS: /* Mixer channels supporting stereo */
-                        for (val = i = 0; i < ms->numch; i++)
-                                if (ms->ch[i].flags & (MIXFLG_STEREOIN | MIXFLG_STEREOOUT))
-                                        val |= 1 << ms->ch[i].osschannel;
-                        return put_user(val, user_arg);
-                        
-                case SOUND_MIXER_CAPS:
-                        return put_user(SOUND_CAP_EXCL_INPUT, user_arg);
-
-                default:
-                        i = _IOC_NR(cmd);
-                        if (i >= SOUND_MIXER_NRDEVICES)
-                                return -EINVAL;
-                        for (j = 0; j < ms->numch; j++) {
-                                if (ms->ch[j].osschannel == i) {
-                                        return put_user(ms->ch[j].value, user_arg);
-                                }
-                        }
-                        return -EINVAL;
-                }
-        }
-        if (_IOC_DIR(cmd) != (_IOC_READ|_IOC_WRITE)) 
-                return -EINVAL;
-        ms->modcnt++;
-        switch (_IOC_NR(cmd)) {
-        case SOUND_MIXER_RECSRC: /* Arg contains a bit for each recording source */
-                if (get_user(val, user_arg))
-                        return -EFAULT;
-                return set_rec_src(ms, val);
-
-        default:
-                i = _IOC_NR(cmd);
-                if (i >= SOUND_MIXER_NRDEVICES)
-                        return -EINVAL;
-                for (j = 0; j < ms->numch && ms->ch[j].osschannel != i; j++);
-                if (j >= ms->numch)
-                        return -EINVAL;
-                if (get_user(val, user_arg))
-                        return -EFAULT;
-                if (wrmixer(ms, j, val))
-                        return -EIO;
-                return put_user(ms->ch[j].value, user_arg);
-        }
-}
-
-static /*const*/ struct file_operations usb_mixer_fops = {
-        .owner =        THIS_MODULE,
-        .llseek =       no_llseek,
-        .ioctl =        usb_audio_ioctl_mixdev,
-        .open =         usb_audio_open_mixdev,
-        .release =      usb_audio_release_mixdev,
-};
-
-/* --------------------------------------------------------------------- */
-
-static int drain_out(struct usb_audiodev *as, int nonblock)
-{
-        DECLARE_WAITQUEUE(wait, current);
-        unsigned long flags;
-        int count, tmo;
-        
-        if (as->usbout.dma.mapped || !as->usbout.dma.ready)
-                return 0;
-        usbout_start(as);
-        add_wait_queue(&as->usbout.dma.wait, &wait);
-        for (;;) {
-                __set_current_state(TASK_INTERRUPTIBLE);
-                spin_lock_irqsave(&as->lock, flags);
-                count = as->usbout.dma.count;
-                spin_unlock_irqrestore(&as->lock, flags);
-                if (count <= 0)
-                        break;
-                if (signal_pending(current))
-                        break;
-                if (nonblock) {
-                        remove_wait_queue(&as->usbout.dma.wait, &wait);
-                        set_current_state(TASK_RUNNING);
-                        return -EBUSY;
-                }
-                tmo = 3 * HZ * count / as->usbout.dma.srate;
-                tmo >>= AFMT_BYTESSHIFT(as->usbout.dma.format);
-                if (!schedule_timeout(tmo + 1)) {
-                        printk(KERN_DEBUG "usbaudio: dma timed out??\n");
-                        break;
-                }
-        }
-        remove_wait_queue(&as->usbout.dma.wait, &wait);
-        set_current_state(TASK_RUNNING);
-        if (signal_pending(current))
-                return -ERESTARTSYS;
-        return 0;
-}
-
-/* --------------------------------------------------------------------- */
-
-static ssize_t usb_audio_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos)
-{
-        struct usb_audiodev *as = (struct usb_audiodev *)file->private_data;
-        DECLARE_WAITQUEUE(wait, current);
-        ssize_t ret = 0;
-        unsigned long flags;
-        unsigned int ptr;
-        int cnt, err;
-
-        if (as->usbin.dma.mapped)
-                return -ENXIO;
-        if (!as->usbin.dma.ready && (ret = prog_dmabuf_in(as)))
-                return ret;
-        if (!access_ok(VERIFY_WRITE, buffer, count))
-                return -EFAULT;
-        add_wait_queue(&as->usbin.dma.wait, &wait);
-        while (count > 0) {
-                spin_lock_irqsave(&as->lock, flags);
-                ptr = as->usbin.dma.rdptr;
-                cnt = as->usbin.dma.count;
-                /* set task state early to avoid wakeup races */
-                if (cnt <= 0)
-                        __set_current_state(TASK_INTERRUPTIBLE);
-                spin_unlock_irqrestore(&as->lock, flags);
-                if (cnt > count)
-                        cnt = count;
-                if (cnt <= 0) {
-                        if (usbin_start(as)) {
-                                if (!ret)
-                                        ret = -ENODEV;
-                                break;
-                        }
-                        if (file->f_flags & O_NONBLOCK) {
-                                if (!ret)
-                                        ret = -EAGAIN;
-                                break;
-                        }
-                        schedule();
-                        if (signal_pending(current)) {
-                                if (!ret)
-                                        ret = -ERESTARTSYS;
-                                break;
-                        }
-                        continue;
-                }
-                if ((err = dmabuf_copyout_user(&as->usbin.dma, ptr, buffer, cnt))) {
-                        if (!ret)
-                                ret = err;
-                        break;
-                }
-                ptr += cnt;
-                if (ptr >= as->usbin.dma.dmasize)
-                        ptr -= as->usbin.dma.dmasize;
-                spin_lock_irqsave(&as->lock, flags);
-                as->usbin.dma.rdptr = ptr;
-                as->usbin.dma.count -= cnt;
-                spin_unlock_irqrestore(&as->lock, flags);
-                count -= cnt;
-                buffer += cnt;
-                ret += cnt;
-        }
-        __set_current_state(TASK_RUNNING);
-        remove_wait_queue(&as->usbin.dma.wait, &wait);
-        return ret;
-}
-
-static ssize_t usb_audio_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos)
-{
-        struct usb_audiodev *as = (struct usb_audiodev *)file->private_data;
-        DECLARE_WAITQUEUE(wait, current);
-        ssize_t ret = 0;
-        unsigned long flags;
-        unsigned int ptr;
-        unsigned int start_thr;
-        int cnt, err;
-
-        if (as->usbout.dma.mapped)
-                return -ENXIO;
-        if (!as->usbout.dma.ready && (ret = prog_dmabuf_out(as)))
-                return ret;
-        if (!access_ok(VERIFY_READ, buffer, count))
-                return -EFAULT;
-        start_thr = (as->usbout.dma.srate << AFMT_BYTESSHIFT(as->usbout.dma.format)) / (1000 / (3 * DESCFRAMES));
-        add_wait_queue(&as->usbout.dma.wait, &wait);
-        while (count > 0) {
-#if 0
-                printk(KERN_DEBUG "usb_audio_write: count %u dma: count %u rdptr %u wrptr %u dmasize %u fragsize %u flags 0x%02x taskst 0x%lx\n",
-                       count, as->usbout.dma.count, as->usbout.dma.rdptr, as->usbout.dma.wrptr, as->usbout.dma.dmasize, as->usbout.dma.fragsize,
-                       as->usbout.flags, current->state);
-#endif
-                spin_lock_irqsave(&as->lock, flags);
-                if (as->usbout.dma.count < 0) {
-                        as->usbout.dma.count = 0;
-                        as->usbout.dma.rdptr = as->usbout.dma.wrptr;
-                }
-                ptr = as->usbout.dma.wrptr;
-                cnt = as->usbout.dma.dmasize - as->usbout.dma.count;
-                /* set task state early to avoid wakeup races */
-                if (cnt <= 0)
-                        __set_current_state(TASK_INTERRUPTIBLE);
-                spin_unlock_irqrestore(&as->lock, flags);
-                if (cnt > count)
-                        cnt = count;
-                if (cnt <= 0) {
-                        if (usbout_start(as)) {
-                                if (!ret)
-                                        ret = -ENODEV;
-                                break;
-                        }
-                        if (file->f_flags & O_NONBLOCK) {
-                                if (!ret)
-                                        ret = -EAGAIN;
-                                break;
-                        }
-                        schedule();
-                        if (signal_pending(current)) {
-                                if (!ret)
-                                        ret = -ERESTARTSYS;
-                                break;
-                        }
-                        continue;
-                }
-                if ((err = dmabuf_copyin_user(&as->usbout.dma, ptr, buffer, cnt))) {
-                        if (!ret)
-                                ret = err;
-                        break;
-                }
-                ptr += cnt;
-                if (ptr >= as->usbout.dma.dmasize)
-                        ptr -= as->usbout.dma.dmasize;
-                spin_lock_irqsave(&as->lock, flags);
-                as->usbout.dma.wrptr = ptr;
-                as->usbout.dma.count += cnt;
-                spin_unlock_irqrestore(&as->lock, flags);
-                count -= cnt;
-                buffer += cnt;
-                ret += cnt;
-                if (as->usbout.dma.count >= start_thr && usbout_start(as)) {
-                        if (!ret)
-                                ret = -ENODEV;
-                        break;
-                }
-        }
-        __set_current_state(TASK_RUNNING);
-        remove_wait_queue(&as->usbout.dma.wait, &wait);
-        return ret;
-}
-
-/* Called without the kernel lock - fine */
-static unsigned int usb_audio_poll(struct file *file, struct poll_table_struct *wait)
-{
-        struct usb_audiodev *as = (struct usb_audiodev *)file->private_data;
-        unsigned long flags;
-        unsigned int mask = 0;
-
-        if (file->f_mode & FMODE_WRITE) {
-                if (!as->usbout.dma.ready)
-                        prog_dmabuf_out(as);
-                poll_wait(file, &as->usbout.dma.wait, wait);
-        }
-        if (file->f_mode & FMODE_READ) {
-                if (!as->usbin.dma.ready)
-                        prog_dmabuf_in(as);
-                poll_wait(file, &as->usbin.dma.wait, wait);
-        }
-        spin_lock_irqsave(&as->lock, flags);
-        if (file->f_mode & FMODE_READ) {
-                if (as->usbin.dma.count >= (signed)as->usbin.dma.fragsize)
-                        mask |= POLLIN | POLLRDNORM;
-        }
-        if (file->f_mode & FMODE_WRITE) {
-                if (as->usbout.dma.mapped) {
-                        if (as->usbout.dma.count >= (signed)as->usbout.dma.fragsize) 
-                                mask |= POLLOUT | POLLWRNORM;
-                } else {
-                        if ((signed)as->usbout.dma.dmasize >= as->usbout.dma.count + (signed)as->usbout.dma.fragsize)
-                                mask |= POLLOUT | POLLWRNORM;
-                }
-        }
-        spin_unlock_irqrestore(&as->lock, flags);
-        return mask;
-}
-
-static int usb_audio_mmap(struct file *file, struct vm_area_struct *vma)
-{
-        struct usb_audiodev *as = (struct usb_audiodev *)file->private_data;
-        struct dmabuf *db;
-        int ret = -EINVAL;
-
-        lock_kernel();
-        if (vma->vm_flags & VM_WRITE) {
-                if ((ret = prog_dmabuf_out(as)) != 0)
-                        goto out;
-                db = &as->usbout.dma;
-        } else if (vma->vm_flags & VM_READ) {
-                if ((ret = prog_dmabuf_in(as)) != 0)
-                        goto out;
-                db = &as->usbin.dma;
-        } else
-                goto out;
-
-        ret = -EINVAL;
-        if (vma->vm_pgoff != 0)
-                goto out;
-
-        ret = dmabuf_mmap(vma, db,  vma->vm_start, vma->vm_end - vma->vm_start, vma->vm_page_prot);
-out:
-        unlock_kernel();
-        return ret;
-}
-
-static int usb_audio_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
-{
-        struct usb_audiodev *as = (struct usb_audiodev *)file->private_data;
-        struct usb_audio_state *s = as->state;
-        int __user *user_arg = (int __user *)arg;
-        unsigned long flags;
-        audio_buf_info abinfo;
-        count_info cinfo;
-        int val = 0;
-        int val2, mapped, ret;
-
-        if (!s->usbdev)
-                return -EIO;
-        mapped = ((file->f_mode & FMODE_WRITE) && as->usbout.dma.mapped) ||
-                ((file->f_mode & FMODE_READ) && as->usbin.dma.mapped);
-#if 0
-        if (arg)
-                get_user(val, (int *)arg);
-        printk(KERN_DEBUG "usbaudio: usb_audio_ioctl cmd=%x arg=%lx *arg=%d\n", cmd, arg, val)
-#endif
-        switch (cmd) {
-        case OSS_GETVERSION:
-                return put_user(SOUND_VERSION, user_arg);
-
-        case SNDCTL_DSP_SYNC:
-                if (file->f_mode & FMODE_WRITE)
-                        return drain_out(as, 0/*file->f_flags & O_NONBLOCK*/);
-                return 0;
-
-        case SNDCTL_DSP_SETDUPLEX:
-                return 0;
-
-        case SNDCTL_DSP_GETCAPS:
-                return put_user(DSP_CAP_DUPLEX | DSP_CAP_REALTIME | DSP_CAP_TRIGGER | 
-                                DSP_CAP_MMAP | DSP_CAP_BATCH, user_arg);
-
-        case SNDCTL_DSP_RESET:
-                if (file->f_mode & FMODE_WRITE) {
-                        usbout_stop(as);
-                        as->usbout.dma.rdptr = as->usbout.dma.wrptr = as->usbout.dma.count = as->usbout.dma.total_bytes = 0;
-                }
-                if (file->f_mode & FMODE_READ) {
-                        usbin_stop(as);
-                        as->usbin.dma.rdptr = as->usbin.dma.wrptr = as->usbin.dma.count = as->usbin.dma.total_bytes = 0;
-                }
-                return 0;
-
-        case SNDCTL_DSP_SPEED:
-                if (get_user(val, user_arg))
-                        return -EFAULT;
-                if (val >= 0) {
-                        if (val < 4000)
-                                val = 4000;
-                        if (val > 100000)
-                                val = 100000;
-                        if (set_format(as, file->f_mode, AFMT_QUERY, val))
-                                return -EIO;
-                }
-                return put_user((file->f_mode & FMODE_READ) ? 
-                                as->usbin.dma.srate : as->usbout.dma.srate,
-                                user_arg);
-
-        case SNDCTL_DSP_STEREO:
-                if (get_user(val, user_arg))
-                        return -EFAULT;
-                val2 = (file->f_mode & FMODE_READ) ? as->usbin.dma.format : as->usbout.dma.format;
-                if (val)
-                        val2 |= AFMT_STEREO;
-                else
-                        val2 &= ~AFMT_STEREO;
-                if (set_format(as, file->f_mode, val2, 0))
-                        return -EIO;
-                return 0;
-
-        case SNDCTL_DSP_CHANNELS:
-                if (get_user(val, user_arg))
-                        return -EFAULT;
-                if (val != 0) {
-                        val2 = (file->f_mode & FMODE_READ) ? as->usbin.dma.format : as->usbout.dma.format;
-                        if (val == 1)
-                                val2 &= ~AFMT_STEREO;
-                        else
-                                val2 |= AFMT_STEREO;
-                        if (set_format(as, file->f_mode, val2, 0))
-                                return -EIO;
-                }
-                val2 = (file->f_mode & FMODE_READ) ? as->usbin.dma.format : as->usbout.dma.format;
-                return put_user(AFMT_ISSTEREO(val2) ? 2 : 1, user_arg);
-
-        case SNDCTL_DSP_GETFMTS: /* Returns a mask */
-                return put_user(AFMT_U8 | AFMT_U16_LE | AFMT_U16_BE |
-                                AFMT_S8 | AFMT_S16_LE | AFMT_S16_BE, user_arg);
-
-        case SNDCTL_DSP_SETFMT: /* Selects ONE fmt*/
-                if (get_user(val, user_arg))
-                        return -EFAULT;
-                if (val != AFMT_QUERY) {
-                        if (hweight32(val) != 1)
-                                return -EINVAL;
-                        if (!(val & (AFMT_U8 | AFMT_U16_LE | AFMT_U16_BE |
-                                     AFMT_S8 | AFMT_S16_LE | AFMT_S16_BE)))
-                                return -EINVAL;
-                        val2 = (file->f_mode & FMODE_READ) ? as->usbin.dma.format : as->usbout.dma.format;
-                        val |= val2 & AFMT_STEREO;
-                        if (set_format(as, file->f_mode, val, 0))
-                                return -EIO;
-                }
-                val2 = (file->f_mode & FMODE_READ) ? as->usbin.dma.format : as->usbout.dma.format;
-                return put_user(val2 & ~AFMT_STEREO, user_arg);
-
-        case SNDCTL_DSP_POST:
-                return 0;
-
-        case SNDCTL_DSP_GETTRIGGER:
-                val = 0;
-                if (file->f_mode & FMODE_READ && as->usbin.flags & FLG_RUNNING) 
-                        val |= PCM_ENABLE_INPUT;
-                if (file->f_mode & FMODE_WRITE && as->usbout.flags & FLG_RUNNING) 
-                        val |= PCM_ENABLE_OUTPUT;
-                return put_user(val, user_arg);
-
-        case SNDCTL_DSP_SETTRIGGER:
-                if (get_user(val, user_arg))
-                        return -EFAULT;
-                if (file->f_mode & FMODE_READ) {
-                        if (val & PCM_ENABLE_INPUT) {
-                                if (!as->usbin.dma.ready && (ret = prog_dmabuf_in(as)))
-                                        return ret;
-                                if (usbin_start(as))
-                                        return -ENODEV;
-                        } else
-                                usbin_stop(as);
-                }
-                if (file->f_mode & FMODE_WRITE) {
-                        if (val & PCM_ENABLE_OUTPUT) {
-                                if (!as->usbout.dma.ready && (ret = prog_dmabuf_out(as)))
-                                        return ret;
-                                if (usbout_start(as))
-                                        return -ENODEV;
-                        } else
-                                usbout_stop(as);
-                }
-                return 0;
-
-        case SNDCTL_DSP_GETOSPACE:
-                if (!(file->f_mode & FMODE_WRITE))
-                        return -EINVAL;
-                if (!(as->usbout.flags & FLG_RUNNING) && (val = prog_dmabuf_out(as)) != 0)
-                        return val;
-                spin_lock_irqsave(&as->lock, flags);
-                abinfo.fragsize = as->usbout.dma.fragsize;
-                abinfo.bytes = as->usbout.dma.dmasize - as->usbout.dma.count;
-                abinfo.fragstotal = as->usbout.dma.numfrag;
-                abinfo.fragments = abinfo.bytes >> as->usbout.dma.fragshift;      
-                spin_unlock_irqrestore(&as->lock, flags);
-                return copy_to_user((void __user *)arg, &abinfo, sizeof(abinfo)) ? -EFAULT : 0;
-
-        case SNDCTL_DSP_GETISPACE:
-                if (!(file->f_mode & FMODE_READ))
-                        return -EINVAL;
-                if (!(as->usbin.flags & FLG_RUNNING) && (val = prog_dmabuf_in(as)) != 0)
-                        return val;
-                spin_lock_irqsave(&as->lock, flags);
-                abinfo.fragsize = as->usbin.dma.fragsize;
-                abinfo.bytes = as->usbin.dma.count;
-                abinfo.fragstotal = as->usbin.dma.numfrag;
-                abinfo.fragments = abinfo.bytes >> as->usbin.dma.fragshift;      
-                spin_unlock_irqrestore(&as->lock, flags);
-                return copy_to_user((void __user *)arg, &abinfo, sizeof(abinfo)) ? -EFAULT : 0;
-                
-        case SNDCTL_DSP_NONBLOCK:
-                file->f_flags |= O_NONBLOCK;
-                return 0;
-
-        case SNDCTL_DSP_GETODELAY:
-                if (!(file->f_mode & FMODE_WRITE))
-                        return -EINVAL;
-                spin_lock_irqsave(&as->lock, flags);
-                val = as->usbout.dma.count;
-                spin_unlock_irqrestore(&as->lock, flags);
-                return put_user(val, user_arg);
-
-        case SNDCTL_DSP_GETIPTR:
-                if (!(file->f_mode & FMODE_READ))
-                        return -EINVAL;
-                spin_lock_irqsave(&as->lock, flags);
-                cinfo.bytes = as->usbin.dma.total_bytes;
-                cinfo.blocks = as->usbin.dma.count >> as->usbin.dma.fragshift;
-                cinfo.ptr = as->usbin.dma.wrptr;
-                if (as->usbin.dma.mapped)
-                        as->usbin.dma.count &= as->usbin.dma.fragsize-1;
-                spin_unlock_irqrestore(&as->lock, flags);
-                if (copy_to_user((void __user *)arg, &cinfo, sizeof(cinfo)))
-                        return -EFAULT;
-                return 0;
-
-        case SNDCTL_DSP_GETOPTR:
-                if (!(file->f_mode & FMODE_WRITE))
-                        return -EINVAL;
-                spin_lock_irqsave(&as->lock, flags);
-                cinfo.bytes = as->usbout.dma.total_bytes;
-                cinfo.blocks = as->usbout.dma.count >> as->usbout.dma.fragshift;
-                cinfo.ptr = as->usbout.dma.rdptr;
-                if (as->usbout.dma.mapped)
-                        as->usbout.dma.count &= as->usbout.dma.fragsize-1;
-                spin_unlock_irqrestore(&as->lock, flags);
-                if (copy_to_user((void __user *)arg, &cinfo, sizeof(cinfo)))
-                        return -EFAULT;
-                return 0;
-
-       case SNDCTL_DSP_GETBLKSIZE:
-                if (file->f_mode & FMODE_WRITE) {
-                        if ((val = prog_dmabuf_out(as)))
-                                return val;
-                        return put_user(as->usbout.dma.fragsize, user_arg);
-                }
-                if ((val = prog_dmabuf_in(as)))
-                        return val;
-                return put_user(as->usbin.dma.fragsize, user_arg);
-
-        case SNDCTL_DSP_SETFRAGMENT:
-                if (get_user(val, user_arg))
-                        return -EFAULT;
-                if (file->f_mode & FMODE_READ) {
-                        as->usbin.dma.ossfragshift = val & 0xffff;
-                        as->usbin.dma.ossmaxfrags = (val >> 16) & 0xffff;
-                        if (as->usbin.dma.ossfragshift < 4)
-                                as->usbin.dma.ossfragshift = 4;
-                        if (as->usbin.dma.ossfragshift > 15)
-                                as->usbin.dma.ossfragshift = 15;
-                        if (as->usbin.dma.ossmaxfrags < 4)
-                                as->usbin.dma.ossmaxfrags = 4;
-                }
-                if (file->f_mode & FMODE_WRITE) {
-                        as->usbout.dma.ossfragshift = val & 0xffff;
-                        as->usbout.dma.ossmaxfrags = (val >> 16) & 0xffff;
-                        if (as->usbout.dma.ossfragshift < 4)
-                                as->usbout.dma.ossfragshift = 4;
-                        if (as->usbout.dma.ossfragshift > 15)
-                                as->usbout.dma.ossfragshift = 15;
-                        if (as->usbout.dma.ossmaxfrags < 4)
-                                as->usbout.dma.ossmaxfrags = 4;
-                }
-                return 0;
-
-        case SNDCTL_DSP_SUBDIVIDE:
-                if ((file->f_mode & FMODE_READ && as->usbin.dma.subdivision) ||
-                    (file->f_mode & FMODE_WRITE && as->usbout.dma.subdivision))
-                        return -EINVAL;
-                if (get_user(val, user_arg))
-                        return -EFAULT;
-                if (val != 1 && val != 2 && val != 4)
-                        return -EINVAL;
-                if (file->f_mode & FMODE_READ)
-                        as->usbin.dma.subdivision = val;
-                if (file->f_mode & FMODE_WRITE)
-                        as->usbout.dma.subdivision = val;
-                return 0;
-
-        case SOUND_PCM_READ_RATE:
-                return put_user((file->f_mode & FMODE_READ) ? 
-                                as->usbin.dma.srate : as->usbout.dma.srate,
-                                user_arg);
-
-        case SOUND_PCM_READ_CHANNELS:
-                val2 = (file->f_mode & FMODE_READ) ? as->usbin.dma.format : as->usbout.dma.format;
-                return put_user(AFMT_ISSTEREO(val2) ? 2 : 1, user_arg);
-
-        case SOUND_PCM_READ_BITS:
-                val2 = (file->f_mode & FMODE_READ) ? as->usbin.dma.format : as->usbout.dma.format;
-                return put_user(AFMT_IS16BIT(val2) ? 16 : 8, user_arg);
-
-        case SOUND_PCM_WRITE_FILTER:
-        case SNDCTL_DSP_SETSYNCRO:
-        case SOUND_PCM_READ_FILTER:
-                return -EINVAL;
-        }
-        dprintk((KERN_DEBUG "usbaudio: usb_audio_ioctl - no command found\n"));
-        return -ENOIOCTLCMD;
-}
-
-static int usb_audio_open(struct inode *inode, struct file *file)
-{
-        unsigned int minor = iminor(inode);
-        DECLARE_WAITQUEUE(wait, current);
-        struct usb_audiodev *as;
-        struct usb_audio_state *s;
-
-        for (;;) {
-                down(&open_sem);
-                list_for_each_entry(s, &audiodevs, audiodev) {
-                        list_for_each_entry(as, &s->audiolist, list) {
-                                if (!((as->dev_audio ^ minor) & ~0xf))
-                                        goto device_found;
-                        }
-                }
-                up(&open_sem);
-                return -ENODEV;
-
-        device_found:
-                if (!s->usbdev) {
-                        up(&open_sem);
-                        return -EIO;
-                }
-                /* wait for device to become free */
-                if (!(as->open_mode & file->f_mode))
-                        break;
-                if (file->f_flags & O_NONBLOCK) {
-                        up(&open_sem);
-                        return -EBUSY;
-                }
-                __set_current_state(TASK_INTERRUPTIBLE);
-                add_wait_queue(&open_wait, &wait);
-                up(&open_sem);
-                schedule();
-                __set_current_state(TASK_RUNNING);
-                remove_wait_queue(&open_wait, &wait);
-                if (signal_pending(current))
-                        return -ERESTARTSYS;
-        }
-        if (file->f_mode & FMODE_READ)
-                as->usbin.dma.ossfragshift = as->usbin.dma.ossmaxfrags = as->usbin.dma.subdivision = 0;
-        if (file->f_mode & FMODE_WRITE)
-                as->usbout.dma.ossfragshift = as->usbout.dma.ossmaxfrags = as->usbout.dma.subdivision = 0;
-        if (set_format(as, file->f_mode, ((minor & 0xf) == SND_DEV_DSP16) ? AFMT_S16_LE : AFMT_U8 /* AFMT_ULAW */, 8000)) {
-                up(&open_sem);
-                return -EIO;
-        }
-        file->private_data = as;
-        as->open_mode |= file->f_mode & (FMODE_READ | FMODE_WRITE);
-        s->count++;
-        up(&open_sem);
-        return nonseekable_open(inode, file);
-}
-
-static int usb_audio_release(struct inode *inode, struct file *file)
-{
-        struct usb_audiodev *as = (struct usb_audiodev *)file->private_data;
-        struct usb_audio_state *s;
-        struct usb_device *dev;
-
-        lock_kernel();
-        s = as->state;
-        dev = s->usbdev;
-        if (file->f_mode & FMODE_WRITE)
-                drain_out(as, file->f_flags & O_NONBLOCK);
-        down(&open_sem);
-        if (file->f_mode & FMODE_WRITE) {
-                usbout_stop(as);
-                if (dev && as->usbout.interface >= 0)
-                        usb_set_interface(dev, as->usbout.interface, 0);
-                dmabuf_release(&as->usbout.dma);
-                usbout_release(as);
-        }
-        if (file->f_mode & FMODE_READ) {
-                usbin_stop(as);
-                if (dev && as->usbin.interface >= 0)
-                        usb_set_interface(dev, as->usbin.interface, 0);
-                dmabuf_release(&as->usbin.dma);
-                usbin_release(as);
-        }
-        as->open_mode &= (~file->f_mode) & (FMODE_READ|FMODE_WRITE);
-        release(s);
-        wake_up(&open_wait);
-        unlock_kernel();
-        return 0;
-}
-
-static /*const*/ struct file_operations usb_audio_fops = {
-        .owner =        THIS_MODULE,
-        .llseek =       no_llseek,
-        .read =         usb_audio_read,
-        .write =        usb_audio_write,
-        .poll =         usb_audio_poll,
-        .ioctl =        usb_audio_ioctl,
-        .mmap =         usb_audio_mmap,
-        .open =         usb_audio_open,
-        .release =      usb_audio_release,
-};
-
-/* --------------------------------------------------------------------- */
-
-static int usb_audio_probe(struct usb_interface *iface,
-                           const struct usb_device_id *id);
-static void usb_audio_disconnect(struct usb_interface *iface);
-
-static struct usb_device_id usb_audio_ids [] = {
-    { .match_flags = (USB_DEVICE_ID_MATCH_INT_CLASS | USB_DEVICE_ID_MATCH_INT_SUBCLASS),
-      .bInterfaceClass = USB_CLASS_AUDIO, .bInterfaceSubClass = 1},
-    { }                                         /* Terminating entry */
-};
-
-MODULE_DEVICE_TABLE (usb, usb_audio_ids);
-
-static struct usb_driver usb_audio_driver = {
-        .name =         "audio",
-        .probe =        usb_audio_probe,
-        .disconnect =   usb_audio_disconnect,
-        .id_table =     usb_audio_ids,
-};
-
-static void *find_descriptor(void *descstart, unsigned int desclen, void *after, 
-                             u8 dtype, int iface, int altsetting)
-{
-        u8 *p, *end, *next;
-        int ifc = -1, as = -1;
-
-        p = descstart;
-        end = p + desclen;
-        for (; p < end;) {
-                if (p[0] < 2)
-                        return NULL;
-                next = p + p[0];
-                if (next > end)
-                        return NULL;
-                if (p[1] == USB_DT_INTERFACE) {
-                        /* minimum length of interface descriptor */
-                        if (p[0] < 9)
-                                return NULL;
-                        ifc = p[2];
-                        as = p[3];
-                }
-                if (p[1] == dtype && (!after || (void *)p > after) &&
-                    (iface == -1 || iface == ifc) && (altsetting == -1 || altsetting == as)) {
-                        return p;
-                }
-                p = next;
-        }
-        return NULL;
-}
-
-static void *find_csinterface_descriptor(void *descstart, unsigned int desclen, void *after, u8 dsubtype, int iface, int altsetting)
-{
-        unsigned char *p;
-
-        p = find_descriptor(descstart, desclen, after, USB_DT_CS_INTERFACE, iface, altsetting);
-        while (p) {
-                if (p[0] >= 3 && p[2] == dsubtype)
-                        return p;
-                p = find_descriptor(descstart, desclen, p, USB_DT_CS_INTERFACE, iface, altsetting);
-        }
-        return NULL;
-}
-
-static void *find_audiocontrol_unit(void *descstart, unsigned int desclen, void *after, u8 unit, int iface)
-{
-        unsigned char *p;
-
-        p = find_descriptor(descstart, desclen, after, USB_DT_CS_INTERFACE, iface, -1);
-        while (p) {
-                if (p[0] >= 4 && p[2] >= INPUT_TERMINAL && p[2] <= EXTENSION_UNIT && p[3] == unit)
-                        return p;
-                p = find_descriptor(descstart, desclen, p, USB_DT_CS_INTERFACE, iface, -1);
-        }
-        return NULL;
-}
-
-static void usb_audio_parsestreaming(struct usb_audio_state *s, unsigned char *buffer, unsigned int buflen, int asifin, int asifout)
-{
-        struct usb_device *dev = s->usbdev;
-        struct usb_audiodev *as;
-        struct usb_host_interface *alts;
-        struct usb_interface *iface;
-        struct audioformat *fp;
-        unsigned char *fmt, *csep;
-        unsigned int i, j, k, format, idx;
-
-        if (!(as = kmalloc(sizeof(struct usb_audiodev), GFP_KERNEL)))
-                return;
-        memset(as, 0, sizeof(struct usb_audiodev));
-        init_waitqueue_head(&as->usbin.dma.wait);
-        init_waitqueue_head(&as->usbout.dma.wait);
-        spin_lock_init(&as->lock);
-        as->usbin.durb[0].urb = usb_alloc_urb (DESCFRAMES, GFP_KERNEL);
-        as->usbin.durb[1].urb = usb_alloc_urb (DESCFRAMES, GFP_KERNEL);
-        as->usbin.surb[0].urb = usb_alloc_urb (SYNCFRAMES, GFP_KERNEL);
-        as->usbin.surb[1].urb = usb_alloc_urb (SYNCFRAMES, GFP_KERNEL);
-        as->usbout.durb[0].urb = usb_alloc_urb (DESCFRAMES, GFP_KERNEL);
-        as->usbout.durb[1].urb = usb_alloc_urb (DESCFRAMES, GFP_KERNEL);
-        as->usbout.surb[0].urb = usb_alloc_urb (SYNCFRAMES, GFP_KERNEL);
-        as->usbout.surb[1].urb = usb_alloc_urb (SYNCFRAMES, GFP_KERNEL);
-        if ((!as->usbin.durb[0].urb) ||
-            (!as->usbin.durb[1].urb) ||
-            (!as->usbin.surb[0].urb) ||
-            (!as->usbin.surb[1].urb) ||
-            (!as->usbout.durb[0].urb) ||
-            (!as->usbout.durb[1].urb) ||
-            (!as->usbout.surb[0].urb) ||
-            (!as->usbout.surb[1].urb)) {
-                usb_free_urb(as->usbin.durb[0].urb);
-                usb_free_urb(as->usbin.durb[1].urb);
-                usb_free_urb(as->usbin.surb[0].urb);
-                usb_free_urb(as->usbin.surb[1].urb);
-                usb_free_urb(as->usbout.durb[0].urb);
-                usb_free_urb(as->usbout.durb[1].urb);
-                usb_free_urb(as->usbout.surb[0].urb);
-                usb_free_urb(as->usbout.surb[1].urb);
-                kfree(as);
-                return;
-        }
-        as->state = s;
-        as->usbin.interface = asifin;
-        as->usbout.interface = asifout;
-        /* search for input formats */
-        if (asifin >= 0) {
-                as->usbin.flags = FLG_CONNECTED;
-                iface = usb_ifnum_to_if(dev, asifin);
-                for (idx = 0; idx < iface->num_altsetting; idx++) {
-                        alts = &iface->altsetting[idx];
-                        i = alts->desc.bAlternateSetting;
-                        if (alts->desc.bInterfaceClass != USB_CLASS_AUDIO || alts->desc.bInterfaceSubClass != 2)
-                                continue;
-                        if (alts->desc.bNumEndpoints < 1) {
-                                if (i != 0) {  /* altsetting 0 has no endpoints (Section B.3.4.1) */
-                                        printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u does not have an endpoint\n", 
-                                               dev->devnum, asifin, i);
-                                }
-                                continue;
-                        }
-                        if ((alts->endpoint[0].desc.bmAttributes & 0x03) != 0x01 ||
-                            !(alts->endpoint[0].desc.bEndpointAddress & 0x80)) {
-                                printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u first endpoint not isochronous in\n", 
-                                       dev->devnum, asifin, i);
-                                continue;
-                        }
-                        fmt = find_csinterface_descriptor(buffer, buflen, NULL, AS_GENERAL, asifin, i);
-                        if (!fmt) {
-                                printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u FORMAT_TYPE descriptor not found\n", 
-                                       dev->devnum, asifin, i);
-                                continue;
-                        }
-                        if (fmt[0] < 7 || fmt[6] != 0 || (fmt[5] != 1 && fmt[5] != 2)) {
-                                printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u format not supported\n", 
-                                       dev->devnum, asifin, i);
-                                continue;
-                        }
-                        format = (fmt[5] == 2) ? (AFMT_U16_LE | AFMT_U8) : (AFMT_S16_LE | AFMT_S8);
-                        fmt = find_csinterface_descriptor(buffer, buflen, NULL, FORMAT_TYPE, asifin, i);
-                        if (!fmt) {
-                                printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u FORMAT_TYPE descriptor not found\n", 
-                                       dev->devnum, asifin, i);
-                                continue;
-                        }
-                        if (fmt[0] < 8+3*(fmt[7] ? fmt[7] : 2) || fmt[3] != 1) {
-                                printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u FORMAT_TYPE descriptor not supported\n", 
-                                       dev->devnum, asifin, i);
-                                continue;
-                        }
-                        if (fmt[4] < 1 || fmt[4] > 2 || fmt[5] < 1 || fmt[5] > 2) {
-                                printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u unsupported channels %u framesize %u\n", 
-                                       dev->devnum, asifin, i, fmt[4], fmt[5]);
-                                continue;
-                        }
-                        csep = find_descriptor(buffer, buflen, NULL, USB_DT_CS_ENDPOINT, asifin, i);
-                        if (!csep || csep[0] < 7 || csep[2] != EP_GENERAL) {
-                                printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u no or invalid class specific endpoint descriptor\n", 
-                                       dev->devnum, asifin, i);
-                                continue;
-                        }
-                        if (as->numfmtin >= MAXFORMATS)
-                                continue;
-                        fp = &as->fmtin[as->numfmtin++];
-                        if (fmt[5] == 2)
-                                format &= (AFMT_U16_LE | AFMT_S16_LE);
-                        else
-                                format &= (AFMT_U8 | AFMT_S8);
-                        if (fmt[4] == 2)
-                                format |= AFMT_STEREO;
-                        fp->format = format;
-                        fp->altsetting = i;
-                        fp->sratelo = fp->sratehi = fmt[8] | (fmt[9] << 8) | (fmt[10] << 16);
-                        printk(KERN_INFO "usbaudio: valid input sample rate %u\n", fp->sratelo);
-                        for (j = fmt[7] ? (fmt[7]-1) : 1; j > 0; j--) {
-                                k = fmt[8+3*j] | (fmt[9+3*j] << 8) | (fmt[10+3*j] << 16);
-                                printk(KERN_INFO "usbaudio: valid input sample rate %u\n", k);
-                                if (k > fp->sratehi)
-                                        fp->sratehi = k;
-                                if (k < fp->sratelo)
-                                        fp->sratelo = k;
-                        }
-                        fp->attributes = csep[3];
-                        printk(KERN_INFO "usbaudio: device %u interface %u altsetting %u: format 0x%08x sratelo %u sratehi %u attributes 0x%02x\n", 
-                               dev->devnum, asifin, i, fp->format, fp->sratelo, fp->sratehi, fp->attributes);
-                }
-        }
-        /* search for output formats */
-        if (asifout >= 0) {
-                as->usbout.flags = FLG_CONNECTED;
-                iface = usb_ifnum_to_if(dev, asifout);
-                for (idx = 0; idx < iface->num_altsetting; idx++) {
-                        alts = &iface->altsetting[idx];
-                        i = alts->desc.bAlternateSetting;
-                        if (alts->desc.bInterfaceClass != USB_CLASS_AUDIO || alts->desc.bInterfaceSubClass != 2)
-                                continue;
-                        if (alts->desc.bNumEndpoints < 1) {
-                                /* altsetting 0 should never have iso EPs */
-                                if (i != 0)
-                                printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u does not have an endpoint\n", 
-                                       dev->devnum, asifout, i);
-                                continue;
-                        }
-                        if ((alts->endpoint[0].desc.bmAttributes & 0x03) != 0x01 ||
-                            (alts->endpoint[0].desc.bEndpointAddress & 0x80)) {
-                                printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u first endpoint not isochronous out\n", 
-                                       dev->devnum, asifout, i);
-                                continue;
-                        }
-                        /* See USB audio formats manual, section 2 */
-                        fmt = find_csinterface_descriptor(buffer, buflen, NULL, AS_GENERAL, asifout, i);
-                        if (!fmt) {
-                                printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u FORMAT_TYPE descriptor not found\n", 
-                                       dev->devnum, asifout, i);
-                                continue;
-                        }
-                        if (fmt[0] < 7 || fmt[6] != 0 || (fmt[5] != 1 && fmt[5] != 2)) {
-                                printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u format not supported\n", 
-                                       dev->devnum, asifout, i);
-                                continue;
-                        }
-                        format = (fmt[5] == 2) ? (AFMT_U16_LE | AFMT_U8) : (AFMT_S16_LE | AFMT_S8);
-                        /* Dallas DS4201 workaround */
-                        if (le16_to_cpu(dev->descriptor.idVendor) == 0x04fa && 
-                            le16_to_cpu(dev->descriptor.idProduct) == 0x4201)
-                                format = (AFMT_S16_LE | AFMT_S8);
-                        fmt = find_csinterface_descriptor(buffer, buflen, NULL, FORMAT_TYPE, asifout, i);
-                        if (!fmt) {
-                                printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u FORMAT_TYPE descriptor not found\n", 
-                                       dev->devnum, asifout, i);
-                                continue;
-                        }
-                        if (fmt[0] < 8+3*(fmt[7] ? fmt[7] : 2) || fmt[3] != 1) {
-                                printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u FORMAT_TYPE descriptor not supported\n", 
-                                       dev->devnum, asifout, i);
-                                continue;
-                        }
-                        if (fmt[4] < 1 || fmt[4] > 2 || fmt[5] < 1 || fmt[5] > 2) {
-                                printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u unsupported channels %u framesize %u\n", 
-                                       dev->devnum, asifout, i, fmt[4], fmt[5]);
-                                continue;
-                        }
-                        csep = find_descriptor(buffer, buflen, NULL, USB_DT_CS_ENDPOINT, asifout, i);
-                        if (!csep || csep[0] < 7 || csep[2] != EP_GENERAL) {
-                                printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u no or invalid class specific endpoint descriptor\n", 
-                                       dev->devnum, asifout, i);
-                                continue;
-                        }
-                        if (as->numfmtout >= MAXFORMATS)
-                                continue;
-                        fp = &as->fmtout[as->numfmtout++];
-                        if (fmt[5] == 2)
-                                format &= (AFMT_U16_LE | AFMT_S16_LE);
-                        else
-                                format &= (AFMT_U8 | AFMT_S8);
-                        if (fmt[4] == 2)
-                                format |= AFMT_STEREO;
-                        fp->format = format;
-                        fp->altsetting = i;
-                        fp->sratelo = fp->sratehi = fmt[8] | (fmt[9] << 8) | (fmt[10] << 16);
-                        printk(KERN_INFO "usbaudio: valid output sample rate %u\n", fp->sratelo);
-                        for (j = fmt[7] ? (fmt[7]-1) : 1; j > 0; j--) {
-                                k = fmt[8+3*j] | (fmt[9+3*j] << 8) | (fmt[10+3*j] << 16);
-                                printk(KERN_INFO "usbaudio: valid output sample rate %u\n", k);
-                                if (k > fp->sratehi)
-                                        fp->sratehi = k;
-                                if (k < fp->sratelo)
-                                        fp->sratelo = k;
-                        }
-                        fp->attributes = csep[3];
-                        printk(KERN_INFO "usbaudio: device %u interface %u altsetting %u: format 0x%08x sratelo %u sratehi %u attributes 0x%02x\n", 
-                               dev->devnum, asifout, i, fp->format, fp->sratelo, fp->sratehi, fp->attributes);
-                }
-        }
-        if (as->numfmtin == 0 && as->numfmtout == 0) {
-                usb_free_urb(as->usbin.durb[0].urb);
-                usb_free_urb(as->usbin.durb[1].urb);
-                usb_free_urb(as->usbin.surb[0].urb);
-                usb_free_urb(as->usbin.surb[1].urb);
-                usb_free_urb(as->usbout.durb[0].urb);
-                usb_free_urb(as->usbout.durb[1].urb);
-                usb_free_urb(as->usbout.surb[0].urb);
-                usb_free_urb(as->usbout.surb[1].urb);
-                kfree(as);
-                return;
-        }
-        if ((as->dev_audio = register_sound_dsp(&usb_audio_fops, -1)) < 0) {
-                printk(KERN_ERR "usbaudio: cannot register dsp\n");
-                usb_free_urb(as->usbin.durb[0].urb);
-                usb_free_urb(as->usbin.durb[1].urb);
-                usb_free_urb(as->usbin.surb[0].urb);
-                usb_free_urb(as->usbin.surb[1].urb);
-                usb_free_urb(as->usbout.durb[0].urb);
-                usb_free_urb(as->usbout.durb[1].urb);
-                usb_free_urb(as->usbout.surb[0].urb);
-                usb_free_urb(as->usbout.surb[1].urb);
-                kfree(as);
-                return;
-        }
-        printk(KERN_INFO "usbaudio: registered dsp 14,%d\n", as->dev_audio);
-        /* everything successful */
-        list_add_tail(&as->list, &s->audiolist);
-}
-
-struct consmixstate {
-        struct usb_audio_state *s;
-        unsigned char *buffer;
-        unsigned int buflen;
-        unsigned int ctrlif;
-        struct mixerchannel mixch[SOUND_MIXER_NRDEVICES];
-        unsigned int nrmixch;
-        unsigned int mixchmask;
-        unsigned long unitbitmap[32/sizeof(unsigned long)];
-        /* return values */
-        unsigned int nrchannels;
-        unsigned int termtype;
-        unsigned int chconfig;
-};
-
-static struct mixerchannel *getmixchannel(struct consmixstate *state, unsigned int nr)
-{
-        struct mixerchannel *c;
-
-        if (nr >= SOUND_MIXER_NRDEVICES) {
-                printk(KERN_ERR "usbaudio: invalid OSS mixer channel %u\n", nr);
-                return NULL;
-        }
-        if (!(state->mixchmask & (1 << nr))) {
-                printk(KERN_WARNING "usbaudio: OSS mixer channel %u already in use\n", nr);
-                return NULL;
-        }
-        c = &state->mixch[state->nrmixch++];
-        c->osschannel = nr;
-        state->mixchmask &= ~(1 << nr);
-        return c;
-}
-
-static unsigned int getvolchannel(struct consmixstate *state)
-{
-        unsigned int u;
-
-        if ((state->termtype & 0xff00) == 0x0000 && (state->mixchmask & SOUND_MASK_VOLUME))
-                return SOUND_MIXER_VOLUME;
-        if ((state->termtype & 0xff00) == 0x0100) {
-                if (state->mixchmask & SOUND_MASK_PCM)
-                        return SOUND_MIXER_PCM;
-                if (state->mixchmask & SOUND_MASK_ALTPCM)
-                        return SOUND_MIXER_ALTPCM;
-        }
-        if ((state->termtype & 0xff00) == 0x0200 && (state->mixchmask & SOUND_MASK_MIC))
-                return SOUND_MIXER_MIC;
-        if ((state->termtype & 0xff00) == 0x0300 && (state->mixchmask & SOUND_MASK_SPEAKER))
-                return SOUND_MIXER_SPEAKER;
-        if ((state->termtype & 0xff00) == 0x0500) {
-                if (state->mixchmask & SOUND_MASK_PHONEIN)
-                        return SOUND_MIXER_PHONEIN;
-                if (state->mixchmask & SOUND_MASK_PHONEOUT)
-                        return SOUND_MIXER_PHONEOUT;
-        }
-        if (state->termtype >= 0x710 && state->termtype <= 0x711 && (state->mixchmask & SOUND_MASK_RADIO))
-                return SOUND_MIXER_RADIO;
-        if (state->termtype >= 0x709 && state->termtype <= 0x70f && (state->mixchmask & SOUND_MASK_VIDEO))
-                return SOUND_MIXER_VIDEO;
-        u = ffs(state->mixchmask & (SOUND_MASK_LINE | SOUND_MASK_CD | SOUND_MASK_LINE1 | SOUND_MASK_LINE2 | SOUND_MASK_LINE3 |
-                                    SOUND_MASK_DIGITAL1 | SOUND_MASK_DIGITAL2 | SOUND_MASK_DIGITAL3));
-        return u-1;
-}
-
-static void prepmixch(struct consmixstate *state)
-{
-        struct usb_device *dev = state->s->usbdev;
-        struct mixerchannel *ch;
-        unsigned char *buf;
-        __s16 v1;
-        unsigned int v2, v3;
-
-        if (!state->nrmixch || state->nrmixch > SOUND_MIXER_NRDEVICES)
-                return;
-        buf = kmalloc(sizeof(*buf) * 2, GFP_KERNEL);
-        if (!buf) {
-                printk(KERN_ERR "prepmixch: out of memory\n") ;
-                return;
-        }
-
-        ch = &state->mixch[state->nrmixch-1];
-        switch (ch->selector) {
-        case 0:  /* mixer unit request */
-                if (usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_MIN, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
-                                    (ch->chnum << 8) | 1, state->ctrlif | (ch->unitid << 8), buf, 2, 1000) < 0)
-                        goto err;
-                ch->minval = buf[0] | (buf[1] << 8);
-                if (usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_MAX, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
-                                    (ch->chnum << 8) | 1, state->ctrlif | (ch->unitid << 8), buf, 2, 1000) < 0)
-                        goto err;
-                ch->maxval = buf[0] | (buf[1] << 8);
-                v2 = ch->maxval - ch->minval;
-                if (!v2)
-                        v2 = 1;
-                if (usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
-                                    (ch->chnum << 8) | 1, state->ctrlif | (ch->unitid << 8), buf, 2, 1000) < 0)
-                        goto err;
-                v1 = buf[0] | (buf[1] << 8);
-                v3 = v1 - ch->minval;
-                v3 = 100 * v3 / v2;
-                if (v3 > 100)
-                        v3 = 100;
-                ch->value = v3;
-                if (ch->flags & (MIXFLG_STEREOIN | MIXFLG_STEREOOUT)) {
-                        if (usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
-                                            ((ch->chnum + !!(ch->flags & MIXFLG_STEREOIN)) << 8) | (1 + !!(ch->flags & MIXFLG_STEREOOUT)),
-                                            state->ctrlif | (ch->unitid << 8), buf, 2, 1000) < 0)
-                        goto err;
-                        v1 = buf[0] | (buf[1] << 8);
-                        v3 = v1 - ch->minval;
-                        v3 = 100 * v3 / v2;
-                        if (v3 > 100)
-                                v3 = 100;
-                }
-                ch->value |= v3 << 8;
-                break;
-
-                /* various feature unit controls */
-        case VOLUME_CONTROL:
-                if (usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_MIN, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
-                                    (ch->selector << 8) | ch->chnum, state->ctrlif | (ch->unitid << 8), buf, 2, 1000) < 0)
-                        goto err;
-                ch->minval = buf[0] | (buf[1] << 8);
-                if (usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_MAX, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
-                                    (ch->selector << 8) | ch->chnum, state->ctrlif | (ch->unitid << 8), buf, 2, 1000) < 0)
-                        goto err;
-                ch->maxval = buf[0] | (buf[1] << 8);
-                if (usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
-                                    (ch->selector << 8) | ch->chnum, state->ctrlif | (ch->unitid << 8), buf, 2, 1000) < 0)
-                        goto err;
-                v1 = buf[0] | (buf[1] << 8);
-                v2 = ch->maxval - ch->minval;
-                v3 = v1 - ch->minval;
-                if (!v2)
-                        v2 = 1;
-                v3 = 100 * v3 / v2;
-                if (v3 > 100)
-                        v3 = 100;
-                ch->value = v3;
-                if (ch->flags & (MIXFLG_STEREOIN | MIXFLG_STEREOOUT)) {
-                        if (usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
-                                            (ch->selector << 8) | (ch->chnum + 1), state->ctrlif | (ch->unitid << 8), buf, 2, 1000) < 0)
-                                goto err;
-                        v1 = buf[0] | (buf[1] << 8);
-                        v3 = v1 - ch->minval;
-                        v3 = 100 * v3 / v2;
-                        if (v3 > 100)
-                                v3 = 100;
-                }
-                ch->value |= v3 << 8;
-                break;
-                
-        case BASS_CONTROL:
-        case MID_CONTROL:
-        case TREBLE_CONTROL:
-                if (usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_MIN, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
-                                    (ch->selector << 8) | ch->chnum, state->ctrlif | (ch->unitid << 8), buf, 1, 1000) < 0)
-                        goto err;
-                ch->minval = buf[0] << 8;
-                if (usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_MAX, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
-                                    (ch->selector << 8) | ch->chnum, state->ctrlif | (ch->unitid << 8), buf, 1, 1000) < 0)
-                        goto err;
-                ch->maxval = buf[0] << 8;
-                if (usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
-                                    (ch->selector << 8) | ch->chnum, state->ctrlif | (ch->unitid << 8), buf, 1, 1000) < 0)
-                        goto err;
-                v1 = buf[0] << 8;
-                v2 = ch->maxval - ch->minval;
-                v3 = v1 - ch->minval;
-                if (!v2)
-                        v2 = 1;
-                v3 = 100 * v3 / v2;
-                if (v3 > 100)
-                        v3 = 100;
-                ch->value = v3;
-                if (ch->flags & (MIXFLG_STEREOIN | MIXFLG_STEREOOUT)) {
-                        if (usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
-                                            (ch->selector << 8) | (ch->chnum + 1), state->ctrlif | (ch->unitid << 8), buf, 1, 1000) < 0)
-                                goto err;
-                        v1 = buf[0] << 8;
-                        v3 = v1 - ch->minval;
-                        v3 = 100 * v3 / v2;
-                        if (v3 > 100)
-                                v3 = 100;
-                }
-                ch->value |= v3 << 8;
-                break;
-                
-        default:
-                goto err;
-        }
-
- freebuf:
-        kfree(buf);
-        return;
- err:
-        printk(KERN_ERR "usbaudio: mixer request device %u if %u unit %u ch %u selector %u failed\n", 
-               dev->devnum, state->ctrlif, ch->unitid, ch->chnum, ch->selector);
-        if (state->nrmixch)
-                state->nrmixch--;
-        goto freebuf;
-}
-
-
-static void usb_audio_recurseunit(struct consmixstate *state, unsigned char unitid);
-
-static inline int checkmixbmap(unsigned char *bmap, unsigned char flg, unsigned int inidx, unsigned int numoch)
-{
-        unsigned int idx;
-
-        idx = inidx*numoch;
-        if (!(bmap[-(idx >> 3)] & (0x80 >> (idx & 7))))
-                return 0;
-        if (!(flg & (MIXFLG_STEREOIN | MIXFLG_STEREOOUT)))
-                return 1;
-        idx = (inidx+!!(flg & MIXFLG_STEREOIN))*numoch+!!(flg & MIXFLG_STEREOOUT);
-        if (!(bmap[-(idx >> 3)] & (0x80 >> (idx & 7))))
-                return 0;
-        return 1;
-}
-
-static void usb_audio_mixerunit(struct consmixstate *state, unsigned char *mixer)
-{
-        unsigned int nroutch = mixer[5+mixer[4]];
-        unsigned int chidx[SOUND_MIXER_NRDEVICES+1];
-        unsigned int termt[SOUND_MIXER_NRDEVICES];
-        unsigned char flg = (nroutch >= 2) ? MIXFLG_STEREOOUT : 0;
-        unsigned char *bmap = &mixer[9+mixer[4]];
-        unsigned int bmapsize;
-        struct mixerchannel *ch;
-        unsigned int i;
-
-        if (!mixer[4]) {
-                printk(KERN_ERR "usbaudio: unit %u invalid MIXER_UNIT descriptor\n", mixer[3]);
-                return;
-        }
-        if (mixer[4] > SOUND_MIXER_NRDEVICES) {
-                printk(KERN_ERR "usbaudio: mixer unit %u: too many input pins\n", mixer[3]);
-                return;
-        }
-        chidx[0] = 0;
-        for (i = 0; i < mixer[4]; i++) {
-                usb_audio_recurseunit(state, mixer[5+i]);
-                chidx[i+1] = chidx[i] + state->nrchannels;
-                termt[i] = state->termtype;
-        }
-        state->termtype = 0;
-        state->chconfig = mixer[6+mixer[4]] | (mixer[7+mixer[4]] << 8);
-        bmapsize = (nroutch * chidx[mixer[4]] + 7) >> 3;
-        bmap += bmapsize - 1;
-        if (mixer[0] < 10+mixer[4]+bmapsize) {
-                printk(KERN_ERR "usbaudio: unit %u invalid MIXER_UNIT descriptor (bitmap too small)\n", mixer[3]);
-                return;
-        }
-        for (i = 0; i < mixer[4]; i++) {
-                state->termtype = termt[i];
-                if (chidx[i+1]-chidx[i] >= 2) {
-                        flg |= MIXFLG_STEREOIN;
-                        if (checkmixbmap(bmap, flg, chidx[i], nroutch)) {
-                                ch = getmixchannel(state, getvolchannel(state));
-                                if (ch) {
-                                        ch->unitid = mixer[3];
-                                        ch->selector = 0;
-                                        ch->chnum = chidx[i]+1;
-                                        ch->flags = flg;
-                                        prepmixch(state);
-                                }
-                                continue;
-                        }
-                }
-                flg &= ~MIXFLG_STEREOIN;
-                if (checkmixbmap(bmap, flg, chidx[i], nroutch)) {
-                        ch = getmixchannel(state, getvolchannel(state));
-                        if (ch) {
-                                ch->unitid = mixer[3];
-                                ch->selector = 0;
-                                ch->chnum = chidx[i]+1;
-                                ch->flags = flg;
-                                prepmixch(state);
-                        }
-                }
-        }       
-        state->termtype = 0;
-}
-
-static struct mixerchannel *slctsrc_findunit(struct consmixstate *state, __u8 unitid)
-{
-        unsigned int i;
-        
-        for (i = 0; i < state->nrmixch; i++)
-                if (state->mixch[i].unitid == unitid)
-                        return &state->mixch[i];
-        return NULL;
-}
-
-static void usb_audio_selectorunit(struct consmixstate *state, unsigned char *selector)
-{
-        unsigned int chnum, i, mixch;
-        struct mixerchannel *mch;
-
-        if (!selector[4]) {
-                printk(KERN_ERR "usbaudio: unit %u invalid SELECTOR_UNIT descriptor\n", selector[3]);
-                return;
-        }
-        mixch = state->nrmixch;
-        usb_audio_recurseunit(state, selector[5]);
-        if (state->nrmixch != mixch) {
-                mch = &state->mixch[state->nrmixch-1];
-                mch->slctunitid = selector[3] | (1 << 8);
-        } else if ((mch = slctsrc_findunit(state, selector[5]))) {
-                mch->slctunitid = selector[3] | (1 << 8);
-        } else {
-                printk(KERN_INFO "usbaudio: selector unit %u: ignoring channel 1\n", selector[3]);
-        }
-        chnum = state->nrchannels;
-        for (i = 1; i < selector[4]; i++) {
-                mixch = state->nrmixch;
-                usb_audio_recurseunit(state, selector[5+i]);
-                if (chnum != state->nrchannels) {
-                        printk(KERN_ERR "usbaudio: selector unit %u: input pins with varying channel numbers\n", selector[3]);
-                        state->termtype = 0;
-                        state->chconfig = 0;
-                        state->nrchannels = 0;
-                        return;
-                }
-                if (state->nrmixch != mixch) {
-                        mch = &state->mixch[state->nrmixch-1];
-                        mch->slctunitid = selector[3] | ((i + 1) << 8);
-                } else if ((mch = slctsrc_findunit(state, selector[5+i]))) {
-                        mch->slctunitid = selector[3] | ((i + 1) << 8);
-                } else {
-                        printk(KERN_INFO "usbaudio: selector unit %u: ignoring channel %u\n", selector[3], i+1);
-                }
-        }
-        state->termtype = 0;
-        state->chconfig = 0;
-}
-
-/* in the future we might try to handle 3D etc. effect units */
-
-static void usb_audio_processingunit(struct consmixstate *state, unsigned char *proc)
-{
-        unsigned int i;
-
-        for (i = 0; i < proc[6]; i++)
-                usb_audio_recurseunit(state, proc[7+i]);
-        state->nrchannels = proc[7+proc[6]];
-        state->termtype = 0;
-        state->chconfig = proc[8+proc[6]] | (proc[9+proc[6]] << 8);
-}
-
-
-/* See Audio Class Spec, section 4.3.2.5 */
-static void usb_audio_featureunit(struct consmixstate *state, unsigned char *ftr)
-{
-        struct mixerchannel *ch;
-        unsigned short chftr, mchftr;
-#if 0
-        struct usb_device *dev = state->s->usbdev;
-        unsigned char data[1];
-#endif
-        unsigned char nr_logical_channels, i;
-
-        usb_audio_recurseunit(state, ftr[4]);
-
-        if (ftr[5] == 0 ) {
-                printk(KERN_ERR "usbaudio: wrong controls size in feature unit %u\n",ftr[3]);
-                return;
-        }
-
-        if (state->nrchannels == 0) {
-                printk(KERN_ERR "usbaudio: feature unit %u source has no channels\n", ftr[3]);
-                return;
-        }
-        if (state->nrchannels > 2)
-                printk(KERN_WARNING "usbaudio: feature unit %u: OSS mixer interface does not support more than 2 channels\n", ftr[3]);
-
-        nr_logical_channels=(ftr[0]-7)/ftr[5]-1;
-
-        if (nr_logical_channels != state->nrchannels) {
-                printk(KERN_WARNING "usbaudio: warning: found %d of %d logical channels.\n", state->nrchannels,nr_logical_channels);
-
-                if (state->nrchannels == 1 && nr_logical_channels==0) {
-                        printk(KERN_INFO "usbaudio: assuming the channel found is the master channel (got a Philips camera?). Should be fine.\n");
-                } else if (state->nrchannels == 1 && nr_logical_channels==2) {
-                        printk(KERN_INFO "usbaudio: assuming that a stereo channel connected directly to a mixer is missing in search (got Labtec headset?). Should be fine.\n");
-                        state->nrchannels=nr_logical_channels;
-                } else {
-                        printk(KERN_WARNING "usbaudio: no idea what's going on..., contact linux-usb-devel@lists.sourceforge.net\n");
-                }
-        }
-
-        /* There is always a master channel */
-        mchftr = ftr[6];
-        /* Binary AND over logical channels if they exist */
-        if (nr_logical_channels) {
-                chftr = ftr[6+ftr[5]];
-                for (i = 2; i <= nr_logical_channels; i++)
-                        chftr &= ftr[6+i*ftr[5]];
-        } else {
-                chftr = 0;
-        }
-
-        /* volume control */
-        if (chftr & 2) {
-                ch = getmixchannel(state, getvolchannel(state));
-                if (ch) {
-                        ch->unitid = ftr[3];
-                        ch->selector = VOLUME_CONTROL;
-                        ch->chnum = 1;
-                        ch->flags = (state->nrchannels > 1) ? (MIXFLG_STEREOIN | MIXFLG_STEREOOUT) : 0;
-                        prepmixch(state);
-                }
-        } else if (mchftr & 2) {
-                ch = getmixchannel(state, getvolchannel(state));
-                if (ch) {
-                        ch->unitid = ftr[3];
-                        ch->selector = VOLUME_CONTROL;
-                        ch->chnum = 0;
-                        ch->flags = 0;
-                        prepmixch(state);
-                }
-        }
-        /* bass control */
-        if (chftr & 4) {
-                ch = getmixchannel(state, SOUND_MIXER_BASS);
-                if (ch) {
-                        ch->unitid = ftr[3];
-                        ch->selector = BASS_CONTROL;
-                        ch->chnum = 1;
-                        ch->flags = (state->nrchannels > 1) ? (MIXFLG_STEREOIN | MIXFLG_STEREOOUT) : 0;
-                        prepmixch(state);
-                }
-        } else if (mchftr & 4) {
-                ch = getmixchannel(state, SOUND_MIXER_BASS);
-                if (ch) {
-                        ch->unitid = ftr[3];
-                        ch->selector = BASS_CONTROL;
-                        ch->chnum = 0;
-                        ch->flags = 0;
-                        prepmixch(state);
-                }
-        }
-        /* treble control */
-        if (chftr & 16) {
-                ch = getmixchannel(state, SOUND_MIXER_TREBLE);
-                if (ch) {
-                        ch->unitid = ftr[3];
-                        ch->selector = TREBLE_CONTROL;
-                        ch->chnum = 1;
-                        ch->flags = (state->nrchannels > 1) ? (MIXFLG_STEREOIN | MIXFLG_STEREOOUT) : 0;
-                        prepmixch(state);
-                }
-        } else if (mchftr & 16) {
-                ch = getmixchannel(state, SOUND_MIXER_TREBLE);
-                if (ch) {
-                        ch->unitid = ftr[3];
-                        ch->selector = TREBLE_CONTROL;
-                        ch->chnum = 0;
-                        ch->flags = 0;
-                        prepmixch(state);
-                }
-        }
-#if 0
-        /* if there are mute controls, unmute them */
-        /* does not seem to be necessary, and the Dallas chip does not seem to support the "all" channel (255) */
-        if ((chftr & 1) || (mchftr & 1)) {
-                printk(KERN_DEBUG "usbaudio: unmuting feature unit %u interface %u\n", ftr[3], state->ctrlif);
-                data[0] = 0;
-                if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
-                                    (MUTE_CONTROL << 8) | 0xff, state->ctrlif | (ftr[3] << 8), data, 1, 1000) < 0)
-                        printk(KERN_WARNING "usbaudio: failure to unmute feature unit %u interface %u\n", ftr[3], state->ctrlif);
-        }
-#endif
-}
-
-static void usb_audio_recurseunit(struct consmixstate *state, unsigned char unitid)
-{
-        unsigned char *p1;
-        unsigned int i, j;
-
-        if (test_and_set_bit(unitid, state->unitbitmap)) {
-                printk(KERN_INFO "usbaudio: mixer path revisits unit %d\n", unitid);
-                return;
-        }
-        p1 = find_audiocontrol_unit(state->buffer, state->buflen, NULL, unitid, state->ctrlif);
-        if (!p1) {
-                printk(KERN_ERR "usbaudio: unit %d not found!\n", unitid);
-                return;
-        }
-        state->nrchannels = 0;
-        state->termtype = 0;
-        state->chconfig = 0;
-        switch (p1[2]) {
-        case INPUT_TERMINAL:
-                if (p1[0] < 12) {
-                        printk(KERN_ERR "usbaudio: unit %u: invalid INPUT_TERMINAL descriptor\n", unitid);
-                        return;
-                }
-                state->nrchannels = p1[7];
-                state->termtype = p1[4] | (p1[5] << 8);
-                state->chconfig = p1[8] | (p1[9] << 8);
-                return;
-
-        case MIXER_UNIT:
-                if (p1[0] < 10 || p1[0] < 10+p1[4]) {
-                        printk(KERN_ERR "usbaudio: unit %u: invalid MIXER_UNIT descriptor\n", unitid);
-                        return;
-                }
-                usb_audio_mixerunit(state, p1);
-                return;
-
-        case SELECTOR_UNIT:
-                if (p1[0] < 6 || p1[0] < 6+p1[4]) {
-                        printk(KERN_ERR "usbaudio: unit %u: invalid SELECTOR_UNIT descriptor\n", unitid);
-                        return;
-                }
-                usb_audio_selectorunit(state, p1);
-                return;
-
-        case FEATURE_UNIT: /* See USB Audio Class Spec 4.3.2.5 */
-                if (p1[0] < 7 || p1[0] < 7+p1[5]) {
-                        printk(KERN_ERR "usbaudio: unit %u: invalid FEATURE_UNIT descriptor\n", unitid);
-                        return;
-                }
-                usb_audio_featureunit(state, p1);
-                return;         
-
-        case PROCESSING_UNIT:
-                if (p1[0] < 13 || p1[0] < 13+p1[6] || p1[0] < 13+p1[6]+p1[11+p1[6]]) {
-                        printk(KERN_ERR "usbaudio: unit %u: invalid PROCESSING_UNIT descriptor\n", unitid);
-                        return;
-                }
-                usb_audio_processingunit(state, p1);
-                return;         
-
-        case EXTENSION_UNIT:
-                if (p1[0] < 13 || p1[0] < 13+p1[6] || p1[0] < 13+p1[6]+p1[11+p1[6]]) {
-                        printk(KERN_ERR "usbaudio: unit %u: invalid EXTENSION_UNIT descriptor\n", unitid);
-                        return;
-                }
-                for (j = i = 0; i < p1[6]; i++) {
-                        usb_audio_recurseunit(state, p1[7+i]);
-                        if (!i)
-                                j = state->termtype;
-                        else if (j != state->termtype)
-                                j = 0;
-                }
-                state->nrchannels = p1[7+p1[6]];
-                state->chconfig = p1[8+p1[6]] | (p1[9+p1[6]] << 8);
-                state->termtype = j;
-                return;
-
-        default:
-                printk(KERN_ERR "usbaudio: unit %u: unexpected type 0x%02x\n", unitid, p1[2]);
-                return;
-        }
-}
-
-static void usb_audio_constructmixer(struct usb_audio_state *s, unsigned char *buffer, unsigned int buflen, unsigned int ctrlif, unsigned char *oterm)
-{
-        struct usb_mixerdev *ms;
-        struct consmixstate state;
-
-        memset(&state, 0, sizeof(state));
-        state.s = s;
-        state.nrmixch = 0;
-        state.mixchmask = ~0;
-        state.buffer = buffer;
-        state.buflen = buflen;
-        state.ctrlif = ctrlif;
-        set_bit(oterm[3], state.unitbitmap);  /* mark terminal ID as visited */
-        printk(KERN_DEBUG "usbaudio: constructing mixer for Terminal %u type 0x%04x\n",
-               oterm[3], oterm[4] | (oterm[5] << 8));
-        usb_audio_recurseunit(&state, oterm[7]);
-        if (!state.nrmixch) {
-                printk(KERN_INFO "usbaudio: no mixer controls found for Terminal %u\n", oterm[3]);
-                return;
-        }
-        if (!(ms = kmalloc(sizeof(struct usb_mixerdev)+state.nrmixch*sizeof(struct mixerchannel), GFP_KERNEL)))
-                return;
-        memset(ms, 0, sizeof(struct usb_mixerdev));
-        memcpy(&ms->ch, &state.mixch, state.nrmixch*sizeof(struct mixerchannel));
-        ms->state = s;
-        ms->iface = ctrlif;
-        ms->numch = state.nrmixch;
-        if ((ms->dev_mixer = register_sound_mixer(&usb_mixer_fops, -1)) < 0) {
-                printk(KERN_ERR "usbaudio: cannot register mixer\n");
-                kfree(ms);
-                return;
-        }
-        printk(KERN_INFO "usbaudio: registered mixer 14,%d\n", ms->dev_mixer);
-        list_add_tail(&ms->list, &s->mixerlist);
-}
-
-/* arbitrary limit, we won't check more interfaces than this */
-#define USB_MAXINTERFACES       32
-
-static struct usb_audio_state *usb_audio_parsecontrol(struct usb_device *dev, unsigned char *buffer, unsigned int buflen, unsigned int ctrlif)
-{
-        struct usb_audio_state *s;
-        struct usb_interface *iface;
-        struct usb_host_interface *alt;
-        unsigned char ifin[USB_MAXINTERFACES], ifout[USB_MAXINTERFACES];
-        unsigned char *p1;
-        unsigned int i, j, k, numifin = 0, numifout = 0;
-        
-        if (!(s = kmalloc(sizeof(struct usb_audio_state), GFP_KERNEL)))
-                return NULL;
-        memset(s, 0, sizeof(struct usb_audio_state));
-        INIT_LIST_HEAD(&s->audiolist);
-        INIT_LIST_HEAD(&s->mixerlist);
-        s->usbdev = dev;
-        s->count = 1;
-
-        /* find audiocontrol interface */
-        if (!(p1 = find_csinterface_descriptor(buffer, buflen, NULL, HEADER, ctrlif, -1))) {
-                printk(KERN_ERR "usbaudio: device %d audiocontrol interface %u no HEADER found\n",
-                       dev->devnum, ctrlif);
-                goto ret;
-        }
-        if (p1[0] < 8 + p1[7]) {
-                printk(KERN_ERR "usbaudio: device %d audiocontrol interface %u HEADER error\n",
-                       dev->devnum, ctrlif);
-                goto ret;
-        }
-        if (!p1[7])
-                printk(KERN_INFO "usbaudio: device %d audiocontrol interface %u has no AudioStreaming and MidiStreaming interfaces\n",
-                       dev->devnum, ctrlif);
-        for (i = 0; i < p1[7]; i++) {
-                j = p1[8+i];
-                iface = usb_ifnum_to_if(dev, j);
-                if (!iface) {
-                        printk(KERN_ERR "usbaudio: device %d audiocontrol interface %u interface %u does not exist\n",
-                               dev->devnum, ctrlif, j);
-                        continue;
-                }
-                if (iface->num_altsetting == 1) {
-                        printk(KERN_ERR "usbaudio: device %d audiocontrol interface %u has only 1 altsetting.\n", dev->devnum, ctrlif);
-                        continue;
-                }
-                alt = usb_altnum_to_altsetting(iface, 0);
-                if (!alt) {
-                        printk(KERN_ERR "usbaudio: device %d audiocontrol interface %u interface %u has no altsetting 0\n",
-                               dev->devnum, ctrlif, j);
-                        continue;
-                }
-                if (alt->desc.bInterfaceClass != USB_CLASS_AUDIO) {
-                        printk(KERN_ERR "usbaudio: device %d audiocontrol interface %u interface %u is not an AudioClass interface\n",
-                               dev->devnum, ctrlif, j);
-                        continue;
-                }
-                if (alt->desc.bInterfaceSubClass == 3) {
-                        printk(KERN_INFO "usbaudio: device %d audiocontrol interface %u interface %u MIDIStreaming not supported\n",
-                               dev->devnum, ctrlif, j);
-                        continue;
-                }
-                if (alt->desc.bInterfaceSubClass != 2) {
-                        printk(KERN_ERR "usbaudio: device %d audiocontrol interface %u interface %u invalid AudioClass subtype\n",
-                               dev->devnum, ctrlif, j);
-                        continue;
-                }
-                if (alt->desc.bNumEndpoints > 0) {
-                        /* Check all endpoints; should they all have a bandwidth of 0 ? */
-                        for (k = 0; k < alt->desc.bNumEndpoints; k++) {
-                                if (le16_to_cpu(alt->endpoint[k].desc.wMaxPacketSize) > 0) {
-                                        printk(KERN_ERR "usbaudio: device %d audiocontrol interface %u endpoint %d does not have 0 bandwidth at alt[0]\n", dev->devnum, ctrlif, k);
-                                        break;
-                                }
-                        }
-                        if (k < alt->desc.bNumEndpoints)
-                                continue;
-                }
-
-                alt = usb_altnum_to_altsetting(iface, 1);
-                if (!alt) {
-                        printk(KERN_ERR "usbaudio: device %d audiocontrol interface %u interface %u has no altsetting 1\n",
-                               dev->devnum, ctrlif, j);
-                        continue;
-                }
-                if (alt->desc.bNumEndpoints < 1) {
-                        printk(KERN_ERR "usbaudio: device %d audiocontrol interface %u interface %u has no endpoint\n",
-                               dev->devnum, ctrlif, j);
-                        continue;
-                }
-                /* note: this requires the data endpoint to be ep0 and the optional sync
-                   ep to be ep1, which seems to be the case */
-                if (alt->endpoint[0].desc.bEndpointAddress & USB_DIR_IN) {
-                        if (numifin < USB_MAXINTERFACES) {
-                                ifin[numifin++] = j;
-                                usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1);
-                        }
-                } else {
-                        if (numifout < USB_MAXINTERFACES) {
-                                ifout[numifout++] = j;
-                                usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1);
-                        }
-                }
-        }
-        printk(KERN_INFO "usbaudio: device %d audiocontrol interface %u has %u input and %u output AudioStreaming interfaces\n",
-               dev->devnum, ctrlif, numifin, numifout);
-        for (i = 0; i < numifin && i < numifout; i++)
-                usb_audio_parsestreaming(s, buffer, buflen, ifin[i], ifout[i]);
-        for (j = i; j < numifin; j++)
-                usb_audio_parsestreaming(s, buffer, buflen, ifin[i], -1);
-        for (j = i; j < numifout; j++)
-                usb_audio_parsestreaming(s, buffer, buflen, -1, ifout[i]);
-        /* now walk through all OUTPUT_TERMINAL descriptors to search for mixers */
-        p1 = find_csinterface_descriptor(buffer, buflen, NULL, OUTPUT_TERMINAL, ctrlif, -1);
-        while (p1) {
-                if (p1[0] >= 9)
-                        usb_audio_constructmixer(s, buffer, buflen, ctrlif, p1);
-                p1 = find_csinterface_descriptor(buffer, buflen, p1, OUTPUT_TERMINAL, ctrlif, -1);
-        }
-
-ret:
-        if (list_empty(&s->audiolist) && list_empty(&s->mixerlist)) {
-                kfree(s);
-                return NULL;
-        }
-        /* everything successful */
-        down(&open_sem);
-        list_add_tail(&s->audiodev, &audiodevs);
-        up(&open_sem);
-        printk(KERN_DEBUG "usb_audio_parsecontrol: usb_audio_state at %p\n", s);
-        return s;
-}
-
-/* we only care for the currently active configuration */
-
-static int usb_audio_probe(struct usb_interface *intf,
-                           const struct usb_device_id *id)
-{
-        struct usb_device *dev = interface_to_usbdev (intf);
-        struct usb_audio_state *s;
-        unsigned char *buffer;
-        unsigned int buflen;
-
-#if 0
-        printk(KERN_DEBUG "usbaudio: Probing if %i: IC %x, ISC %x\n", ifnum,
-               config->interface[ifnum].altsetting[0].desc.bInterfaceClass,
-               config->interface[ifnum].altsetting[0].desc.bInterfaceSubClass);
-#endif
-
-        /*
-         * audiocontrol interface found
-         * find which configuration number is active
-         */
-        buffer = dev->rawdescriptors[dev->actconfig - dev->config];
-        buflen = le16_to_cpu(dev->actconfig->desc.wTotalLength);
-        s = usb_audio_parsecontrol(dev, buffer, buflen, intf->altsetting->desc.bInterfaceNumber);
-        if (s) {
-                usb_set_intfdata (intf, s);
-                return 0;
-        }
-        return -ENODEV;
-}
-
-
-/* a revoke facility would make things simpler */
-
-static void usb_audio_disconnect(struct usb_interface *intf)
-{
-        struct usb_audio_state *s = usb_get_intfdata (intf);
-        struct usb_audiodev *as;
-        struct usb_mixerdev *ms;
-
-        if (!s)
-                return;
-
-        /* we get called with -1 for every audiostreaming interface registered */
-        if (s == (struct usb_audio_state *)-1) {
-                dprintk((KERN_DEBUG "usbaudio: note, usb_audio_disconnect called with -1\n"));
-                return;
-        }
-        if (!s->usbdev) {
-                dprintk((KERN_DEBUG "usbaudio: error,  usb_audio_disconnect already called for %p!\n", s));
-                return;
-        }
-        down(&open_sem);
-        list_del_init(&s->audiodev);
-        s->usbdev = NULL;
-        usb_set_intfdata (intf, NULL);
-
-        /* deregister all audio and mixer devices, so no new processes can open this device */
-        list_for_each_entry(as, &s->audiolist, list) {
-                usbin_disc(as);
-                usbout_disc(as);
-                wake_up(&as->usbin.dma.wait);
-                wake_up(&as->usbout.dma.wait);
-                if (as->dev_audio >= 0) {
-                        unregister_sound_dsp(as->dev_audio);
-                        printk(KERN_INFO "usbaudio: unregister dsp 14,%d\n", as->dev_audio);
-                }
-                as->dev_audio = -1;
-        }
-        list_for_each_entry(ms, &s->mixerlist, list) {
-                if (ms->dev_mixer >= 0) {
-                        unregister_sound_mixer(ms->dev_mixer);
-                        printk(KERN_INFO "usbaudio: unregister mixer 14,%d\n", ms->dev_mixer);
-                }
-                ms->dev_mixer = -1;
-        }
-        release(s);
-        wake_up(&open_wait);
-}
-
-static int __init usb_audio_init(void)
-{
-        int result = usb_register(&usb_audio_driver);
-        if (result == 0) 
-                info(DRIVER_VERSION ":" DRIVER_DESC);
-        return result;
-}
-
-
-static void __exit usb_audio_cleanup(void)
-{
-        usb_deregister(&usb_audio_driver);
-}
-
-module_init(usb_audio_init);
-module_exit(usb_audio_cleanup);
-
-MODULE_AUTHOR( DRIVER_AUTHOR );
-MODULE_DESCRIPTION( DRIVER_DESC );
-MODULE_LICENSE("GPL");
-
diff --git a/drivers/usb/class/audio.h b/drivers/usb/class/audio.h
deleted file mode 100644
index 45916eb12103..000000000000
--- a/drivers/usb/class/audio.h
+++ /dev/null
@@ -1,110 +0,0 @@
-#define CS_AUDIO_UNDEFINED              0x20
-#define CS_AUDIO_DEVICE                 0x21
-#define CS_AUDIO_CONFIGURATION          0x22
-#define CS_AUDIO_STRING                 0x23
-#define CS_AUDIO_INTERFACE              0x24
-#define CS_AUDIO_ENDPOINT               0x25
-
-#define HEADER                          0x01
-#define INPUT_TERMINAL                  0x02
-#define OUTPUT_TERMINAL                 0x03
-#define MIXER_UNIT                      0x04
-#define SELECTOR_UNIT                   0x05
-#define FEATURE_UNIT                    0x06
-#define PROCESSING_UNIT                 0x07
-#define EXTENSION_UNIT                  0x08
-
-#define AS_GENERAL                      0x01
-#define FORMAT_TYPE                     0x02
-#define FORMAT_SPECIFIC                 0x03
-
-#define EP_GENERAL                      0x01
-
-#define MAX_CHAN                        9
-#define MAX_FREQ                        16
-#define MAX_IFACE                       8
-#define MAX_FORMAT                      8
-#define MAX_ALT                         32      /* Sorry, we need quite a few for the Philips webcams */
-
-struct usb_audio_terminal
-{       
-        u8      flags;
-        u8      assoc;
-        u16     type;                   /* Mic etc */
-        u8      channels;
-        u8      source;
-        u16     chancfg;
-};
-
-struct usb_audio_format
-{
-        u8      type;
-        u8      channels;
-        u8      num_freq;
-        u8      sfz;
-        u8      bits;
-        u16     freq[MAX_FREQ];
-};
-
-struct usb_audio_interface
-{
-        u8      terminal;
-        u8      delay;
-        u16     num_formats;
-        u16     format_type;
-        u8      flags;
-        u8      idleconf;       /* Idle config */
-#define AU_IFACE_FOUND  1
-        struct  usb_audio_format format[MAX_FORMAT];
-};
-
-struct usb_audio_device
-{
-        struct list_head list;
-        u8      mixer;
-        u8      selector;
-        void    *irq_handle;
-        u8      num_channels;
-        u8      num_dsp_iface;
-        u8      channel_map[MAX_CHAN];
-        struct usb_audio_terminal terminal[MAX_CHAN];
-        struct usb_audio_interface interface[MAX_IFACE][MAX_ALT];
-};
-
-
-
-/* Audio Class specific Request Codes */
-
-#define SET_CUR    0x01
-#define GET_CUR    0x81
-#define SET_MIN    0x02
-#define GET_MIN    0x82
-#define SET_MAX    0x03
-#define GET_MAX    0x83
-#define SET_RES    0x04
-#define GET_RES    0x84
-#define SET_MEM    0x05
-#define GET_MEM    0x85
-#define GET_STAT   0xff
-
-/* Terminal Control Selectors */
-
-#define COPY_PROTECT_CONTROL       0x01
-
-/* Feature Unit Control Selectors */
-
-#define MUTE_CONTROL               0x01
-#define VOLUME_CONTROL             0x02
-#define BASS_CONTROL               0x03
-#define MID_CONTROL                0x04
-#define TREBLE_CONTROL             0x05
-#define GRAPHIC_EQUALIZER_CONTROL  0x06
-#define AUTOMATIC_GAIN_CONTROL     0x07
-#define DELAY_CONTROL              0x08
-#define BASS_BOOST_CONTROL         0x09
-#define LOUDNESS_CONTROL           0x0a
-
-/* Endpoint Control Selectors */
-
-#define SAMPLING_FREQ_CONTROL      0x01
-#define PITCH_CONTROL              0x02
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index 97bdeb1c2181..6dd339f4c0fc 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -60,6 +60,7 @@
 #include <linux/tty_flip.h>
 #include <linux/module.h>
 #include <linux/smp_lock.h>
+#include <linux/mutex.h>
 #include <asm/uaccess.h>
 #include <linux/usb.h>
 #include <linux/usb_cdc.h>
@@ -80,7 +81,7 @@ static struct usb_driver acm_driver;
 static struct tty_driver *acm_tty_driver;
 static struct acm *acm_table[ACM_TTY_MINORS];
 
-static DECLARE_MUTEX(open_sem);
+static DEFINE_MUTEX(open_mutex);
 
 #define ACM_READY(acm)  (acm && acm->dev && acm->used)
 
@@ -431,8 +432,8 @@ static int acm_tty_open(struct tty_struct *tty, struct file *filp)
         int rv = -EINVAL;
         int i;
         dbg("Entering acm_tty_open.\n");
-        
-        down(&open_sem);
+
+        mutex_lock(&open_mutex);
 
         acm = acm_table[tty->index];
         if (!acm || !acm->dev)
@@ -474,14 +475,14 @@ static int acm_tty_open(struct tty_struct *tty, struct file *filp)
 
 done:
 err_out:
-        up(&open_sem);
+        mutex_unlock(&open_mutex);
         return rv;
 
 full_bailout:
         usb_kill_urb(acm->ctrlurb);
 bail_out:
         acm->used--;
-        up(&open_sem);
+        mutex_unlock(&open_mutex);
         return -EIO;
 }
 
@@ -507,7 +508,7 @@ static void acm_tty_close(struct tty_struct *tty, struct file *filp)
         if (!acm || !acm->used)
                 return;
 
-        down(&open_sem);
+        mutex_lock(&open_mutex);
         if (!--acm->used) {
                 if (acm->dev) {
                         acm_set_control(acm, acm->ctrlout = 0);
@@ -518,7 +519,7 @@ static void acm_tty_close(struct tty_struct *tty, struct file *filp)
                 } else
                         acm_tty_unregister(acm);
         }
-        up(&open_sem);
+        mutex_unlock(&open_mutex);
 }
 
 static int acm_tty_write(struct tty_struct *tty, const unsigned char *buf, int count)
@@ -1013,9 +1014,9 @@ static void acm_disconnect(struct usb_interface *intf)
                 return;
         }
 
-        down(&open_sem);
+        mutex_lock(&open_mutex);
         if (!usb_get_intfdata(intf)) {
-                up(&open_sem);
+                mutex_unlock(&open_mutex);
                 return;
         }
         acm->dev = NULL;
@@ -1045,11 +1046,11 @@ static void acm_disconnect(struct usb_interface *intf)
 
         if (!acm->used) {
                 acm_tty_unregister(acm);
-                up(&open_sem);
+                mutex_unlock(&open_mutex);
                 return;
         }
 
-        up(&open_sem);
+        mutex_unlock(&open_mutex);
 
         if (acm->tty)
                 tty_hangup(acm->tty);
diff --git a/drivers/usb/class/usb-midi.c b/drivers/usb/class/usb-midi.c
deleted file mode 100644
index f13f004d311f..000000000000
--- a/drivers/usb/class/usb-midi.c
+++ /dev/null
@@ -1,2153 +0,0 @@
-/*
-  usb-midi.c  --  USB-MIDI driver
-
-  Copyright (C) 2001 
-      NAGANO Daisuke <breeze.nagano@nifty.ne.jp>
-
-  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, or (at your option)
-  any later version.
-
-  This program is distributed in the hope that it will be useful,
-  but WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-  GNU General Public License for more details.
-
-  You should have received a copy of the GNU General Public License
-  along with this program; if not, write to the Free Software
-  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
-  This driver is based on:
-    - 'Universal Serial Bus Device Class Definition for MIDI Device'
-    - linux/drivers/sound/es1371.c, linux/drivers/usb/audio.c
-    - alsa/lowlevel/pci/cs64xx.c
-    - umidi.c for NetBSD
- */
-
-/* ------------------------------------------------------------------------- */
-
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/list.h>
-#include <linux/slab.h>
-#include <linux/usb.h>
-#include <linux/poll.h>
-#include <linux/sound.h>
-#include <linux/init.h>
-#include <asm/semaphore.h>
-
-#include "usb-midi.h"
-
-/* ------------------------------------------------------------------------- */
-
-/* More verbose on syslog */
-#undef MIDI_DEBUG
-
-#define MIDI_IN_BUFSIZ 1024
-
-#define HAVE_SUPPORT_USB_MIDI_CLASS
-
-#undef HAVE_SUPPORT_ALSA
-
-/* ------------------------------------------------------------------------- */
-
-static int singlebyte = 0;
-module_param(singlebyte, int, 0);
-MODULE_PARM_DESC(singlebyte,"Enable sending MIDI messages with single message packet");
-
-static int maxdevices = 4;
-module_param(maxdevices, int, 0);
-MODULE_PARM_DESC(maxdevices,"Max number of allocatable MIDI device");
-
-static int uvendor     = -1;
-module_param(uvendor, int, 0);
-MODULE_PARM_DESC(uvendor, "The USB Vendor ID of a semi-compliant interface");
-
-static int uproduct    = -1;
-module_param(uproduct, int, 0);
-MODULE_PARM_DESC(uproduct, "The USB Product ID of a semi-compliant interface");
-
-static int uinterface  = -1;
-module_param(uinterface, int, 0);
-MODULE_PARM_DESC(uinterface, "The Interface number of a semi-compliant interface");
-
-static int ualt        = -1;
-module_param(ualt, int, 0);
-MODULE_PARM_DESC(ualt, "The optional alternative setting of a semi-compliant interface");
-
-static int umin        = -1;
-module_param(umin, int, 0);
-MODULE_PARM_DESC(umin, "The input endpoint of a semi-compliant interface");
-
-static int umout       = -1;
-module_param(umout, int, 0);
-MODULE_PARM_DESC(umout, "The output endpoint of a semi-compliant interface");
-
-static int ucable      = -1;
-module_param(ucable, int, 0);
-MODULE_PARM_DESC(ucable, "The cable number used for a semi-compliant interface");
-
-/** Note -- the usb_string() returns only Latin-1 characters.
- * (unicode chars <= 255). To support Japanese, a unicode16LE-to-EUC or
- * unicode16LE-to-JIS routine is needed to wrap around usb_get_string().
- **/
-static unsigned short ulangid      = 0x0409; /** 0x0411 for Japanese **/
-module_param(ulangid, ushort, 0);
-MODULE_PARM_DESC(ulangid, "The optional preferred USB Language ID for all devices");
-
-MODULE_AUTHOR("NAGANO Daisuke <breeze.nagano@nifty.ne.jp>");
-MODULE_DESCRIPTION("USB-MIDI driver");
-MODULE_LICENSE("GPL");
-
-/* ------------------------------------------------------------------------- */
-
-/** MIDIStreaming Class-Specific Interface Descriptor Subtypes **/
-
-#define MS_DESCRIPTOR_UNDEFINED 0
-#define MS_HEADER               1
-#define MIDI_IN_JACK            2
-#define MIDI_OUT_JACK           3
-/* Spec reads: ELEMENT */
-#define ELEMENT_DESCRIPTOR      4
-
-#define MS_HEADER_LENGTH        7
-
-/** MIDIStreaming Class-Specific Endpoint Descriptor Subtypes **/
-
-#define DESCRIPTOR_UNDEFINED    0
-/* Spec reads: MS_GENERAL */
-#define MS_GENERAL_ENDPOINT     1
-
-/** MIDIStreaming MIDI IN and OUT Jack Types **/
-
-#define JACK_TYPE_UNDEFINED     0
-/* Spec reads: EMBEDDED */
-#define EMBEDDED_JACK           1
-/* Spec reads: EXTERNAL */
-#define EXTERNAL_JACK           2
-
-
-/* structure summary
-  
-      usb_midi_state     usb_device
-       |         |
-      *|        *|       per ep
-     in_ep     out_ep
-       |         |
-      *|        *|       per cable
-      min       mout
-       |         |       (cable to device pairing magic)
-       |         |
-       usb_midi_dev      dev_id (major,minor) == file->private_data
-
-*/
-
-/* usb_midi_state: corresponds to a USB-MIDI module */
-struct usb_midi_state {
-        struct list_head   mididev;
-        
-        struct usb_device *usbdev;
-        
-        struct list_head   midiDevList;
-        struct list_head   inEndpointList;
-        struct list_head   outEndpointList;
-        
-        spinlock_t         lock;
-        
-        unsigned int       count; /* usage counter */
-};
-
-/* midi_out_endpoint: corresponds to an output endpoint */
-struct midi_out_endpoint {
-        struct list_head  list;
-        
-        struct usb_device *usbdev;
-        int                endpoint;
-        spinlock_t         lock;
-        wait_queue_head_t  wait;
-        
-        unsigned char     *buf;
-        int                bufWrPtr;
-        int                bufSize;
-        
-        struct urb       *urb;
-};
-
-/* midi_in_endpoint: corresponds to an input endpoint */
-struct midi_in_endpoint {
-        struct list_head   list;
-
-        struct usb_device *usbdev;
-        int                endpoint;
-        spinlock_t         lock;
-        wait_queue_head_t  wait;
-
-        struct usb_mididev *cables[16]; // cables open for read
-        int                 readers;    // number of cables open for read
-
-        struct urb        *urb;
-        unsigned char     *recvBuf;
-        int                recvBufSize;
-        int                urbSubmitted;        //FIXME: == readers > 0
-};
-
-/* usb_mididev: corresponds to a logical device */
-struct usb_mididev {
-        struct list_head       list;
-
-        struct usb_midi_state *midi;
-        int                    dev_midi;
-        mode_t                 open_mode;
-
-        struct {
-                struct midi_in_endpoint *ep;
-                int              cableId;
-                
-// as we are pushing data from usb_bulk_read to usb_midi_read,
-// we need a larger, cyclic buffer here.
-                unsigned char    buf[MIDI_IN_BUFSIZ];
-                int              bufRdPtr;
-                int              bufWrPtr;
-                int              bufRemains;
-        } min;
-
-        struct {
-                struct midi_out_endpoint *ep;
-                int              cableId;
-                
-                unsigned char    buf[3];
-                int              bufPtr;
-                int              bufRemains;
-                
-                int              isInExclusive;
-                unsigned char    lastEvent;
-        } mout;
-
-        int singlebyte;
-};
-
-/** Map the high nybble of MIDI voice messages to number of Message bytes.
- * High nyble ranges from 0x8 to 0xe
- */
-
-static int remains_80e0[] = {
-        3,      /** 0x8X Note Off **/
-        3,      /** 0x9X Note On **/
-        3,      /** 0xAX Poly-key pressure **/
-        3,      /** 0xBX Control Change **/
-        2,      /** 0xCX Program Change **/
-        2,      /** 0xDX Channel pressure **/
-        3       /** 0xEX PitchBend Change **/
-};
-
-/** Map the messages to a number of Message bytes.
- *
- **/
-static int remains_f0f6[] = {
-        0,      /** 0xF0 **/
-        2,      /** 0XF1 **/
-        3,      /** 0XF2 **/
-        2,      /** 0XF3 **/
-        2,      /** 0XF4 (Undefined by MIDI Spec, and subject to change) **/
-        2,      /** 0XF5 (Undefined by MIDI Spec, and subject to change) **/
-        1       /** 0XF6 **/
-};
-
-/** Map the messages to a CIN (Code Index Number).
- *
- **/
-static int cin_f0ff[] = {
-        4,      /** 0xF0 System Exclusive Message Start (special cases may be 6 or 7) */
-        2,      /** 0xF1 **/
-        3,      /** 0xF2 **/
-        2,      /** 0xF3 **/
-        2,      /** 0xF4 **/
-        2,      /** 0xF5 **/
-        5,      /** 0xF6 **/
-        5,      /** 0xF7 End of System Exclusive Message (May be 6 or 7) **/
-        5,      /** 0xF8 **/
-        5,      /** 0xF9 **/
-        5,      /** 0xFA **/
-        5,      /** 0xFB **/
-        5,      /** 0xFC **/
-        5,      /** 0xFD **/
-        5,      /** 0xFE **/
-        5       /** 0xFF **/
-};
-
-/** Map MIDIStreaming Event packet Code Index Number (low nybble of byte 0)
- * to the number of bytes of valid MIDI data.
- *
- * CIN of 0 and 1 are NOT USED in MIDIStreaming 1.0.
- *
- **/
-static int cin_to_len[] = {
-        0, 0, 2, 3,
-        3, 1, 2, 3,
-        3, 3, 3, 3,
-        2, 2, 3, 1
-};
-
-
-/* ------------------------------------------------------------------------- */
-
-static struct list_head mididevs = LIST_HEAD_INIT(mididevs);
-
-static DECLARE_MUTEX(open_sem);
-static DECLARE_WAIT_QUEUE_HEAD(open_wait);
-
-
-/* ------------------------------------------------------------------------- */
-
-static void usb_write_callback(struct urb *urb, struct pt_regs *regs)
-{
-        struct midi_out_endpoint *ep = (struct midi_out_endpoint *)urb->context;
-
-        if ( waitqueue_active( &ep->wait ) )
-                wake_up_interruptible( &ep->wait );
-}
-
-
-static int usb_write( struct midi_out_endpoint *ep, unsigned char *buf, int len )
-{
-        struct usb_device *d;
-        int pipe;
-        int ret = 0;
-        int status;
-        int maxretry = 50;
-        
-        DECLARE_WAITQUEUE(wait,current);
-        init_waitqueue_head(&ep->wait);
-
-        d = ep->usbdev;
-        pipe = usb_sndbulkpipe(d, ep->endpoint);
-        usb_fill_bulk_urb( ep->urb, d, pipe, (unsigned char*)buf, len,
-                       usb_write_callback, ep );
-
-        status = usb_submit_urb(ep->urb, GFP_KERNEL);
-    
-        if (status) {
-                printk(KERN_ERR "usbmidi: Cannot submit urb (%d)\n",status);
-                ret = -EIO;
-                goto error;
-        }
-
-        add_wait_queue( &ep->wait, &wait );
-        set_current_state( TASK_INTERRUPTIBLE );
-
-        while( ep->urb->status == -EINPROGRESS ) {
-                if ( maxretry-- < 0 ) {
-                        printk(KERN_ERR "usbmidi: usb_bulk_msg timed out\n");
-                        ret = -ETIME;
-                        break;
-                }
-                interruptible_sleep_on_timeout( &ep->wait, 10 );
-        }
-        set_current_state( TASK_RUNNING );
-        remove_wait_queue( &ep->wait, &wait );
-
-error:
-        return ret;
-}
-
-
-/** Copy data from URB to In endpoint buf.
- * Discard if CIN == 0 or CIN = 1.
- *
- *
- **/
-
-static void usb_bulk_read(struct urb *urb, struct pt_regs *regs)
-{
-        struct midi_in_endpoint *ep = (struct midi_in_endpoint *)(urb->context);
-        unsigned char *data = urb->transfer_buffer;
-        int i, j, wake;
-
-        if ( !ep->urbSubmitted ) {
-                return;
-        }
-
-        if ( (urb->status == 0) && (urb->actual_length > 0) ) {
-                wake = 0;
-                spin_lock( &ep->lock );
-
-                for(j = 0; j < urb->actual_length; j += 4) {
-                        int cin = (data[j]>>0)&0xf;
-                        int cab = (data[j]>>4)&0xf;
-                        struct usb_mididev *cable = ep->cables[cab];
-                        if ( cable ) {
-                                int len = cin_to_len[cin]; /** length of MIDI data **/
-                                for (i = 0; i < len; i++) {
-                                        cable->min.buf[cable->min.bufWrPtr] = data[1+i+j];
-                                        cable->min.bufWrPtr = (cable->min.bufWrPtr+1)%MIDI_IN_BUFSIZ;
-                                        if (cable->min.bufRemains < MIDI_IN_BUFSIZ)
-                                                cable->min.bufRemains += 1;
-                                        else /** need to drop data **/
-                                                cable->min.bufRdPtr += (cable->min.bufRdPtr+1)%MIDI_IN_BUFSIZ;
-                                        wake = 1;
-                                }
-                        }
-                }
-
-                spin_unlock ( &ep->lock );
-                if ( wake ) {
-                        wake_up( &ep->wait );
-                }
-        }
-
-        /* urb->dev must be reinitialized on 2.4.x kernels */
-        urb->dev = ep->usbdev;
-
-        urb->actual_length = 0;
-        usb_submit_urb(urb, GFP_ATOMIC);
-}
-
-
-
-/* ------------------------------------------------------------------------- */
-
-/* This routine must be called with spin_lock */
-
-/** Wrapper around usb_write().
- *  This routine must be called with spin_lock held on ep.
- *  Called by midiWrite(), putOneMidiEvent(), and  usb_midi_write();
- **/
-static int flush_midi_buffer( struct midi_out_endpoint *ep )
-{
-        int ret=0;
-
-        if ( ep->bufWrPtr > 0 ) {
-                ret = usb_write( ep, ep->buf, ep->bufWrPtr );
-                ep->bufWrPtr = 0;
-        }
-
-        return ret;
-}
-
-
-/* ------------------------------------------------------------------------- */
-
-
-/** Given a MIDI Event, determine size of data to be attached to 
- * USB-MIDI packet.
- * Returns 1, 2 or 3.
- * Called by midiWrite();
- * Uses remains_80e0 and remains_f0f6;
- **/
-static int get_remains(int event)
-{
-        int ret;
-
-        if ( event  < 0x80 ) {
-                ret = 1;
-        } else if ( event < 0xf0 ) {
-                ret = remains_80e0[((event-0x80)>>4)&0x0f];
-        } else if ( event < 0xf7 ) {
-                ret = remains_f0f6[event-0xf0];
-        } else {
-                ret = 1;
-        }
-
-        return ret;
-}
-
-/** Given the output MIDI data in the output buffer, computes a reasonable 
- * CIN.
- * Called by putOneMidiEvent().
- **/
-static int get_CIN( struct usb_mididev *m )
-{
-        int cin;
-
-        if ( m->mout.buf[0] == 0xf7 ) {
-                cin = 5;
-        }
-        else if ( m->mout.buf[1] == 0xf7 ) {
-                cin = 6;
-        }
-        else if ( m->mout.buf[2] == 0xf7 ) {
-                cin = 7;
-        }
-        else {
-                if ( m->mout.isInExclusive == 1 ) {
-                        cin = 4;
-                } else if ( m->mout.buf[0] < 0x80 ) {
-                        /** One byte that we know nothing about. **/
-                        cin = 0xF; 
-                } else if ( m->mout.buf[0] < 0xf0 ) {
-                        /** MIDI Voice messages 0x8X to 0xEX map to cin 0x8 to 0xE. **/
-                        cin = (m->mout.buf[0]>>4)&0x0f; 
-                }
-                else {
-                        /** Special lookup table exists for real-time events. **/
-                        cin = cin_f0ff[m->mout.buf[0]-0xf0];
-                }
-        }
-
-        return cin;
-}
-
-
-/* ------------------------------------------------------------------------- */
-
-
-
-/** Move data to USB endpoint buffer.
- *
- **/
-static int put_one_midi_event(struct usb_mididev *m)
-{
-        int cin;
-        unsigned long flags;
-        struct midi_out_endpoint *ep = m->mout.ep;
-        int ret=0;
-
-        cin = get_CIN( m );
-        if ( cin > 0x0f || cin < 0 ) {
-                return -EINVAL;
-        }
-
-        spin_lock_irqsave( &ep->lock, flags );
-        ep->buf[ep->bufWrPtr++] = (m->mout.cableId<<4) | cin;
-        ep->buf[ep->bufWrPtr++] = m->mout.buf[0];
-        ep->buf[ep->bufWrPtr++] = m->mout.buf[1];
-        ep->buf[ep->bufWrPtr++] = m->mout.buf[2];
-        if ( ep->bufWrPtr >= ep->bufSize ) {
-                ret = flush_midi_buffer( ep );
-        }
-        spin_unlock_irqrestore( &ep->lock, flags);
-
-        m->mout.buf[0] = m->mout.buf[1] = m->mout.buf[2] = 0;
-        m->mout.bufPtr = 0;
-
-        return ret;
-}
-
-/** Write the MIDI message v on the midi device.
- *  Called by usb_midi_write();
- *  Responsible for packaging a MIDI data stream into USB-MIDI packets.
- **/
-
-static int midi_write( struct usb_mididev *m, int v )
-{
-        unsigned long flags;
-        struct midi_out_endpoint *ep = m->mout.ep;
-        int ret=0;
-        unsigned char c = (unsigned char)v;
-        unsigned char sysrt_buf[4];
-
-        if ( m->singlebyte != 0 ) {
-                /** Simple code to handle the single-byte USB-MIDI protocol. */
-                spin_lock_irqsave( &ep->lock, flags );
-                if ( ep->bufWrPtr+4 > ep->bufSize ) {
-                        ret = flush_midi_buffer( ep );
-                        if ( !ret ) {
-                                spin_unlock_irqrestore( &ep->lock, flags );
-                                return ret;
-                        }
-                }
-                ep->buf[ep->bufWrPtr++] = (m->mout.cableId<<4) |  0x0f; /* single byte */
-                ep->buf[ep->bufWrPtr++] = c;
-                ep->buf[ep->bufWrPtr++] = 0;
-                ep->buf[ep->bufWrPtr++] = 0;
-                if ( ep->bufWrPtr >= ep->bufSize ) {
-                        ret = flush_midi_buffer( ep );
-                }
-                spin_unlock_irqrestore( &ep->lock, flags );
-
-                return ret;
-        }
-        /** Normal USB-MIDI protocol begins here. */
-
-        if ( c > 0xf7 ) {       /* system: Realtime messages */
-                /** Realtime messages are written IMMEDIATELY. */
-                sysrt_buf[0] = (m->mout.cableId<<4) | 0x0f;
-                sysrt_buf[1] = c;
-                sysrt_buf[2] = 0;
-                sysrt_buf[3] = 0;
-                spin_lock_irqsave( &ep->lock, flags );
-                ret = usb_write( ep, sysrt_buf, 4 );
-                spin_unlock_irqrestore( &ep->lock, flags );
-                /* m->mout.lastEvent = 0; */
-
-                return ret;
-        }
-
-        if ( c >= 0x80 ) {
-                if ( c < 0xf0 ) {
-                        m->mout.lastEvent = c;
-                        m->mout.isInExclusive = 0;
-                        m->mout.bufRemains = get_remains(c);
-                } else if ( c == 0xf0 ) {
-                        /* m->mout.lastEvent = 0; */
-                        m->mout.isInExclusive = 1;
-                        m->mout.bufRemains = get_remains(c);
-                } else if ( c == 0xf7 && m->mout.isInExclusive == 1 ) {
-                        /* m->mout.lastEvent = 0; */
-                        m->mout.isInExclusive = 0;
-                        m->mout.bufRemains = 1;
-                } else if ( c > 0xf0 ) {
-                        /* m->mout.lastEvent = 0; */
-                        m->mout.isInExclusive = 0;
-                        m->mout.bufRemains = get_remains(c);
-                }
-    
-        } else if ( m->mout.bufRemains == 0 && m->mout.isInExclusive == 0 ) {
-                if ( m->mout.lastEvent == 0 ) {
-                        return 0; /* discard, waiting for the first event */
-                }
-                /** track status **/
-                m->mout.buf[0] = m->mout.lastEvent;
-                m->mout.bufPtr = 1;
-                m->mout.bufRemains = get_remains(m->mout.lastEvent)-1;
-        }
-  
-        m->mout.buf[m->mout.bufPtr++] = c;
-        m->mout.bufRemains--;
-        if ( m->mout.bufRemains == 0 || m->mout.bufPtr >= 3) {
-                ret = put_one_midi_event(m);
-        }
-
-        return ret;
-}
-
-
-/* ------------------------------------------------------------------------- */
-
-/** Basic operation on /dev/midiXX as registered through struct file_operations.
- *
- *  Basic contract: Used to change the current read/write position in a file.
- *  On success, the non-negative position is reported.
- *  On failure, the negative of an error code is reported.
- *
- *  Because a MIDIStream is not a file, all seek operations are doomed to fail.
- *
- **/
-static loff_t usb_midi_llseek(struct file *file, loff_t offset, int origin)
-{
-        /** Tell user you cannot seek on a PIPE-like device. **/
-        return -ESPIPE;
-}
-
-
-/** Basic operation on /dev/midiXX as registered through struct file_operations.
- *
- * Basic contract: Block until count bytes have been read or an error occurs.
- *
- **/
-
-static ssize_t usb_midi_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos)
-{
-        struct usb_mididev *m = (struct usb_mididev *)file->private_data;
-        struct midi_in_endpoint *ep = m->min.ep;
-        ssize_t ret;
-        DECLARE_WAITQUEUE(wait, current);
-
-        if ( !access_ok(VERIFY_READ, buffer, count) ) {
-                return -EFAULT;
-        }
-        if ( count == 0 ) {
-                return 0;
-        }
-
-        add_wait_queue( &ep->wait, &wait );
-        ret = 0;
-        while( count > 0 ) {
-                int cnt;
-                int d = (int)count;
-
-                cnt = m->min.bufRemains;
-                if ( cnt > d ) {
-                        cnt = d;
-                }
-
-                if ( cnt <= 0 ) {
-                        if ( file->f_flags & O_NONBLOCK ) {
-                                if (!ret) 
-                                        ret = -EAGAIN;
-                                break;
-                        }
-                        __set_current_state(TASK_INTERRUPTIBLE);
-                        schedule();
-                        if (signal_pending(current)) {
-                                if(!ret)
-                                        ret=-ERESTARTSYS;
-                                break;
-                        }
-                        continue;
-                }
-
-                {
-                        int i;
-                        unsigned long flags; /* used to synchronize access to the endpoint */
-                        spin_lock_irqsave( &ep->lock, flags );
-                        for (i = 0; i < cnt; i++) {
-                                if ( copy_to_user( buffer+i, m->min.buf+m->min.bufRdPtr, 1 ) ) {
-                                        if ( !ret )
-                                                ret = -EFAULT;
-                                        break;
-                                }
-                                m->min.bufRdPtr = (m->min.bufRdPtr+1)%MIDI_IN_BUFSIZ;
-                                m->min.bufRemains -= 1;
-                        }
-                        spin_unlock_irqrestore( &ep->lock, flags );
-                }
-
-                count-=cnt;
-                buffer+=cnt;
-                ret+=cnt;
-
-                break;
-        }
-
-        remove_wait_queue( &ep->wait, &wait );
-        set_current_state(TASK_RUNNING);
-
-        return ret;
-}
-
-
-/** Basic operation on /dev/midiXX as registered through struct file_operations.
- *
- *  Basic Contract: Take MIDI data byte-by-byte and pass it to
- *  writeMidi() which packages MIDI data into USB-MIDI stream.
- *  Then flushMidiData() is called to ensure all bytes have been written
- *  in a timely fashion.
- *
- **/
-
-static ssize_t usb_midi_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos)
-{
-        struct usb_mididev *m = (struct usb_mididev *)file->private_data;
-        ssize_t ret;
-        unsigned long int flags;
-
-        if ( !access_ok(VERIFY_READ, buffer, count) ) {
-                return -EFAULT;
-        }
-        if ( count == 0 ) {
-                return 0;
-        }
-
-        ret = 0;
-        while( count > 0 ) {
-                unsigned char c;
-
-                if (copy_from_user((unsigned char *)&c, buffer, 1)) {
-                        if ( ret == 0 )
-                                ret = -EFAULT;
-                        break;
-                }
-                if( midi_write(m, (int)c) ) {
-                        if ( ret == 0 )
-                                ret = -EFAULT;
-                        break;
-                }
-                count--;
-                buffer++;
-                ret++;
-        }
-
-        spin_lock_irqsave( &m->mout.ep->lock, flags );
-        if ( flush_midi_buffer(m->mout.ep) < 0 ) {
-                ret = -EFAULT;
-        }
-        spin_unlock_irqrestore( &m->mout.ep->lock, flags );
-
-        return ret;
-}
-
-/** Basic operation on /dev/midiXX as registered through struct file_operations.
- *
- * Basic contract:  Wait (spin) until ready to read or write on the file.
- *
- **/
-static unsigned int usb_midi_poll(struct file *file, struct poll_table_struct *wait)
-{
-        struct usb_mididev *m = (struct usb_mididev *)file->private_data;
-        struct midi_in_endpoint *iep = m->min.ep;
-        struct midi_out_endpoint *oep = m->mout.ep;
-        unsigned long flags;
-        unsigned int mask = 0;
-  
-        if ( file->f_mode & FMODE_READ ) {
-                poll_wait( file, &iep->wait, wait );
-                spin_lock_irqsave( &iep->lock, flags );
-                if ( m->min.bufRemains > 0 )
-                        mask |= POLLIN | POLLRDNORM;
-                spin_unlock_irqrestore( &iep->lock, flags );
-        }
-
-        if ( file->f_mode & FMODE_WRITE ) {
-                poll_wait( file, &oep->wait, wait );
-                spin_lock_irqsave( &oep->lock, flags );
-                if ( oep->bufWrPtr < oep->bufSize )
-                        mask |= POLLOUT | POLLWRNORM;
-                spin_unlock_irqrestore( &oep->lock, flags );
-        }
-
-        return mask;
-}
-
-
-/** Basic operation on /dev/midiXX as registered through struct file_operations.
- *
- * Basic contract: This is always the first operation performed on the
- * device node. If no method is defined, the open succeeds without any
- * notification given to the module.
- *
- **/
-
-static int usb_midi_open(struct inode *inode, struct file *file)
-{
-        int minor = iminor(inode);
-        DECLARE_WAITQUEUE(wait, current);
-        struct usb_midi_state *s;
-        struct usb_mididev    *m;
-        unsigned long flags;
-        int succeed = 0;
-
-#if 0
-        printk(KERN_INFO "usb-midi: Open minor= %d.\n", minor);
-#endif
-
-        for(;;) {
-                down(&open_sem);
-                list_for_each_entry(s, &mididevs, mididev) {
-                        list_for_each_entry(m, &s->midiDevList, list) {
-                                if ( !((m->dev_midi ^ minor) & ~0xf) )
-                                        goto device_found;
-                        }
-                }
-                up(&open_sem);
-                return -ENODEV;
-
-        device_found:
-                if ( !s->usbdev ) {
-                        up(&open_sem);
-                        return -EIO;
-                }
-                if ( !(m->open_mode & file->f_mode) ) {
-                        break;
-                }
-                if ( file->f_flags & O_NONBLOCK ) {
-                        up(&open_sem);
-                        return -EBUSY;
-                }
-                __set_current_state(TASK_INTERRUPTIBLE);
-                add_wait_queue( &open_wait, &wait );
-                up(&open_sem);
-                schedule();
-                remove_wait_queue( &open_wait, &wait );
-                if ( signal_pending(current) ) {
-                        return -ERESTARTSYS;
-                }
-        }
-
-        file->private_data = m;
-        spin_lock_irqsave( &s->lock, flags );
-
-        if ( !(m->open_mode & (FMODE_READ | FMODE_WRITE)) ) {
-                //FIXME: intented semantics unclear here
-                m->min.bufRdPtr       = 0;
-                m->min.bufWrPtr       = 0;
-                m->min.bufRemains     = 0;
-                spin_lock_init(&m->min.ep->lock);
-
-                m->mout.bufPtr        = 0;
-                m->mout.bufRemains    = 0;
-                m->mout.isInExclusive = 0;
-                m->mout.lastEvent     = 0;
-                spin_lock_init(&m->mout.ep->lock);
-        }
-
-        if ( (file->f_mode & FMODE_READ) && m->min.ep != NULL ) {
-                unsigned long int flagsep;
-                spin_lock_irqsave( &m->min.ep->lock, flagsep );
-                m->min.ep->cables[m->min.cableId] = m;
-                m->min.ep->readers += 1;
-                m->min.bufRdPtr       = 0;
-                m->min.bufWrPtr       = 0;
-                m->min.bufRemains     = 0;
-                spin_unlock_irqrestore( &m->min.ep->lock, flagsep );
-
-                if ( !(m->min.ep->urbSubmitted)) {
-
-                        /* urb->dev must be reinitialized on 2.4.x kernels */
-                        m->min.ep->urb->dev = m->min.ep->usbdev;
-
-                        if ( usb_submit_urb(m->min.ep->urb, GFP_ATOMIC) ) {
-                                printk(KERN_ERR "usbmidi: Cannot submit urb for MIDI-IN\n");
-                        }
-                        m->min.ep->urbSubmitted = 1;
-                }
-                m->open_mode |= FMODE_READ;
-                succeed = 1;
-        }
-
-        if ( (file->f_mode & FMODE_WRITE) && m->mout.ep != NULL ) {
-                m->mout.bufPtr        = 0;
-                m->mout.bufRemains    = 0;
-                m->mout.isInExclusive = 0;
-                m->mout.lastEvent     = 0;
-                m->open_mode |= FMODE_WRITE;
-                succeed = 1;
-        }
-
-        spin_unlock_irqrestore( &s->lock, flags );
-
-        s->count++;
-        up(&open_sem);
-
-        /** Changed to prevent extra increments to USE_COUNT. **/
-        if (!succeed) {
-                return -EBUSY;
-        }
-
-#if 0
-        printk(KERN_INFO "usb-midi: Open Succeeded. minor= %d.\n", minor);
-#endif
-
-        return nonseekable_open(inode, file); /** Success. **/
-}
-
-
-/** Basic operation on /dev/midiXX as registered through struct file_operations.
- *
- *  Basic contract: Close an opened file and deallocate anything we allocated.
- *  Like open(), this can be missing. If open set file->private_data,
- *  release() must clear it.
- *
- **/
-
-static int usb_midi_release(struct inode *inode, struct file *file)
-{
-        struct usb_mididev *m = (struct usb_mididev *)file->private_data;
-        struct usb_midi_state *s = (struct usb_midi_state *)m->midi;
-
-#if 0
-        printk(KERN_INFO "usb-midi: Close.\n");
-#endif
-
-        down(&open_sem);
-
-        if ( m->open_mode & FMODE_WRITE ) {
-                m->open_mode &= ~FMODE_WRITE;
-                usb_kill_urb( m->mout.ep->urb );
-        }
-
-        if ( m->open_mode & FMODE_READ ) {
-                unsigned long int flagsep;
-                spin_lock_irqsave( &m->min.ep->lock, flagsep );
-                m->min.ep->cables[m->min.cableId] = NULL; // discard cable
-                m->min.ep->readers -= 1;
-                m->open_mode &= ~FMODE_READ;
-                if ( m->min.ep->readers == 0 &&
-                     m->min.ep->urbSubmitted ) {
-                        m->min.ep->urbSubmitted = 0;
-                        usb_kill_urb(m->min.ep->urb);
-                }
-                spin_unlock_irqrestore( &m->min.ep->lock, flagsep );
-        }
-
-        s->count--;
-
-        up(&open_sem);
-        wake_up(&open_wait);
-
-        file->private_data = NULL;
-        return 0;
-}
-
-static struct file_operations usb_midi_fops = {
-        .owner =        THIS_MODULE,
-        .llseek =       usb_midi_llseek,
-        .read =         usb_midi_read,
-        .write =        usb_midi_write,
-        .poll =         usb_midi_poll,
-        .open =         usb_midi_open,
-        .release =      usb_midi_release,
-};
-
-/* ------------------------------------------------------------------------- */
-
-/** Returns filled midi_in_endpoint structure or null on failure.
- *
- * Parameters:
- *      d        - a usb_device
- *      endPoint - An usb endpoint in the range 0 to 15.
- * Called by allocUsbMidiDev();
- *
- **/
-
-static struct midi_in_endpoint *alloc_midi_in_endpoint( struct usb_device *d, int endPoint )
-{
-        struct midi_in_endpoint *ep;
-        int bufSize;
-        int pipe;
-
-        endPoint &= 0x0f; /* Silently force endPoint to lie in range 0 to 15. */
-
-        pipe =  usb_rcvbulkpipe( d, endPoint );
-        bufSize = usb_maxpacket( d, pipe, 0 );
-        /* usb_pipein() = ! usb_pipeout() = true for an in Endpoint */
-
-        ep = (struct midi_in_endpoint *)kmalloc(sizeof(struct midi_in_endpoint), GFP_KERNEL);
-        if ( !ep ) {
-                printk(KERN_ERR "usbmidi: no memory for midi in-endpoint\n");
-                return NULL;
-        }
-        memset( ep, 0, sizeof(struct midi_in_endpoint) );
-//      this sets cables[] and readers to 0, too.
-//      for (i=0; i<16; i++) ep->cables[i] = 0; // discard cable
-//      ep->readers = 0;
-
-        ep->endpoint = endPoint;
-
-        ep->recvBuf = (unsigned char *)kmalloc(sizeof(unsigned char)*(bufSize), GFP_KERNEL);
-        if ( !ep->recvBuf ) {
-                printk(KERN_ERR "usbmidi: no memory for midi in-endpoint buffer\n");
-                kfree(ep);
-                return NULL;
-        }
-
-        ep->urb = usb_alloc_urb(0, GFP_KERNEL); /* no ISO */
-        if ( !ep->urb ) {
-                printk(KERN_ERR "usbmidi: no memory for midi in-endpoint urb\n");
-                kfree(ep->recvBuf);
-                kfree(ep);
-                return NULL;
-        }
-        usb_fill_bulk_urb( ep->urb, d, 
-                       usb_rcvbulkpipe(d, endPoint),
-                       (unsigned char *)ep->recvBuf, bufSize,
-                       usb_bulk_read, ep );
-
-        /* ep->bufRdPtr     = 0; */
-        /* ep->bufWrPtr     = 0; */
-        /* ep->bufRemains   = 0; */
-        /* ep->urbSubmitted = 0; */
-        ep->recvBufSize  = bufSize;
-
-        init_waitqueue_head(&ep->wait);
-
-        return ep;
-}
-
-static int remove_midi_in_endpoint( struct midi_in_endpoint *min )
-{
-        usb_kill_urb( min->urb );
-        usb_free_urb( min->urb );
-        kfree( min->recvBuf );
-        kfree( min );
-
-        return 0;
-}
-
-/** Returns filled midi_out_endpoint structure or null on failure.
- *
- * Parameters:
- *      d        - a usb_device
- *      endPoint - An usb endpoint in the range 0 to 15.
- * Called by allocUsbMidiDev();
- *
- **/
-static struct midi_out_endpoint *alloc_midi_out_endpoint( struct usb_device *d, int endPoint )
-{
-        struct midi_out_endpoint *ep = NULL;
-        int pipe;
-        int bufSize;
-
-        endPoint &= 0x0f;
-        pipe =  usb_sndbulkpipe( d, endPoint );
-        bufSize = usb_maxpacket( d, pipe, 1 );
-
-        ep = (struct midi_out_endpoint *)kmalloc(sizeof(struct midi_out_endpoint), GFP_KERNEL);
-        if ( !ep ) {
-                printk(KERN_ERR "usbmidi: no memory for midi out-endpoint\n");
-                return NULL;
-        }
-        memset( ep, 0, sizeof(struct midi_out_endpoint) );
-
-        ep->endpoint = endPoint;
-        ep->buf = (unsigned char *)kmalloc(sizeof(unsigned char)*bufSize, GFP_KERNEL);
-        if ( !ep->buf ) {
-                printk(KERN_ERR "usbmidi: no memory for midi out-endpoint buffer\n");
-                kfree(ep);
-                return NULL;
-        }
-
-        ep->urb = usb_alloc_urb(0, GFP_KERNEL); /* no ISO */
-        if ( !ep->urb ) {
-                printk(KERN_ERR "usbmidi: no memory for midi out-endpoint urb\n");
-                kfree(ep->buf);
-                kfree(ep);
-                return NULL;
-        }
-
-        ep->bufSize       = bufSize;
-        /* ep->bufWrPtr      = 0; */
-
-        init_waitqueue_head(&ep->wait);
-
-        return ep;
-}
-
-
-static int remove_midi_out_endpoint( struct midi_out_endpoint *mout )
-{
-        usb_kill_urb( mout->urb );
-        usb_free_urb( mout->urb );
-        kfree( mout->buf );
-        kfree( mout );
-
-        return 0;
-}
-
-
-/** Returns a filled usb_mididev structure, registered as a Linux MIDI device.
- *
- * Returns null if memory is not available or the device cannot be registered.
- * Called by allocUsbMidiDev();
- *
- **/
-static struct usb_mididev *allocMidiDev(
-        struct usb_midi_state *s,
-        struct midi_in_endpoint *min,
-        struct midi_out_endpoint *mout,
-        int inCableId,
-        int outCableId )
-{
-        struct usb_mididev *m;
-
-        m = (struct usb_mididev *)kmalloc(sizeof(struct usb_mididev), GFP_KERNEL);
-        if (!m) {
-                printk(KERN_ERR "usbmidi: no memory for midi device\n");
-                return NULL;
-        }
-
-        memset(m, 0, sizeof(struct usb_mididev));
-
-        if ((m->dev_midi = register_sound_midi(&usb_midi_fops, -1)) < 0) {
-                printk(KERN_ERR "usbmidi: cannot register midi device\n");
-                kfree(m);
-                return NULL;
-        }
-
-        m->midi               = s;
-        /* m->open_mode          = 0; */
-
-        if ( min ) {
-                m->min.ep             = min;
-                m->min.ep->usbdev     = s->usbdev;
-                m->min.cableId        = inCableId;
-        }
-        /* m->min.bufPtr         = 0; */
-        /* m->min.bufRemains     = 0; */
-
-        if ( mout ) {
-                m->mout.ep            = mout;
-                m->mout.ep->usbdev    = s->usbdev;
-                m->mout.cableId       = outCableId;
-        }
-        /* m->mout.bufPtr        = 0; */
-        /* m->mout.bufRemains    = 0; */
-        /* m->mout.isInExclusive = 0; */
-        /* m->mout.lastEvent     = 0; */
-
-        m->singlebyte         = singlebyte;
-
-        return m;
-}
-
-
-static void release_midi_device( struct usb_midi_state *s )
-{
-        struct usb_mididev *m;
-        struct midi_in_endpoint *min;
-        struct midi_out_endpoint *mout;
-
-        if ( s->count > 0 ) {
-                up(&open_sem);
-                return;
-        }
-        up( &open_sem );
-        wake_up( &open_wait );
-
-        while(!list_empty(&s->inEndpointList)) {
-                min = list_entry(s->inEndpointList.next, struct midi_in_endpoint, list);
-                list_del(&min->list);
-                remove_midi_in_endpoint(min);
-        }
-
-        while(!list_empty(&s->outEndpointList)) {
-                mout = list_entry(s->outEndpointList.next, struct midi_out_endpoint, list);
-                list_del(&mout->list);
-                remove_midi_out_endpoint(mout);
-        }
-
-        while(!list_empty(&s->midiDevList)) {
-                m = list_entry(s->midiDevList.next, struct usb_mididev, list);
-                list_del(&m->list);
-                kfree(m);
-        }
-
-        kfree(s);
-
-        return;
-}
-
-
-/* ------------------------------------------------------------------------- */
-
-/** Utility routine to find a descriptor in a dump of many descriptors.
- * Returns start of descriptor or NULL if not found. 
- * descStart pointer to list of interfaces.
- * descLength length (in bytes) of dump
- * after (ignored if NULL) this routine returns only descriptors after "after"
- * dtype (mandatory) The descriptor type.
- * iface (ignored if -1) returns descriptor at/following given interface
- * altSetting (ignored if -1) returns descriptor at/following given altSetting
- *
- *
- *  Called by parseDescriptor(), find_csinterface_descriptor();
- *
- */
-static void *find_descriptor( void *descStart, unsigned int descLength, void *after, unsigned char dtype, int iface, int altSetting )
-{
-        unsigned char *p, *end, *next;
-        int interfaceNumber = -1, altSet = -1;
-
-        p = descStart;
-        end = p + descLength;
-        for( ; p < end; ) {
-                if ( p[0] < 2 )
-                        return NULL;
-                next = p + p[0];
-                if ( next > end )
-                        return NULL;
-                if ( p[1] == USB_DT_INTERFACE ) {
-                        if ( p[0] < USB_DT_INTERFACE_SIZE )
-                                return NULL;
-                        interfaceNumber = p[2];
-                        altSet = p[3];
-                }
-                if ( p[1] == dtype &&
-                     ( !after || ( p > (unsigned char *)after) ) &&
-                     ( ( iface == -1) || (iface == interfaceNumber) ) &&
-                     ( (altSetting == -1) || (altSetting == altSet) )) {
-                        return p;
-                }
-                p = next;
-        }
-        return NULL;
-}
-
-/** Utility to find a class-specific interface descriptor.
- *  dsubtype is a descriptor subtype
- *  Called by parseDescriptor();
- **/
-static void *find_csinterface_descriptor(void *descStart, unsigned int descLength, void *after, u8 dsubtype, int iface, int altSetting)
-{
-        unsigned char *p;
-  
-        p = find_descriptor( descStart, descLength, after, USB_DT_CS_INTERFACE, iface, altSetting );
-        while ( p ) {
-                if ( p[0] >= 3 && p[2] == dsubtype )
-                        return p;
-                p = find_descriptor( descStart, descLength, p, USB_DT_CS_INTERFACE, 
-                                     iface, altSetting );
-        }
-        return NULL;
-}
-
-
-/** The magic of making a new usb_midi_device from config happens here.
- *
- * The caller is responsible for free-ing this return value (if not NULL).
- *
- **/
-static struct usb_midi_device *parse_descriptor( struct usb_device *d, unsigned char *buffer, int bufSize, unsigned int ifnum , unsigned int altSetting, int quirks)
-{
-        struct usb_midi_device *u;
-        unsigned char *p1;
-        unsigned char *p2;
-        unsigned char *next;
-        int iep, oep;
-        int length;
-        unsigned long longBits;
-        int pins, nbytes, offset, shift, jack;
-#ifdef HAVE_JACK_STRINGS
-        /** Jacks can have associated names.  **/
-        unsigned char jack2string[256];
-#endif
-
-        u = NULL;
-        /* find audiocontrol interface */
-        p1 = find_csinterface_descriptor( buffer, bufSize, NULL,
-                                          MS_HEADER, ifnum, altSetting);
-
-        if ( !p1 ) {
-                goto error_end;
-        }
-
-        if ( p1[0] < MS_HEADER_LENGTH ) {
-                goto error_end;
-        }
-
-        /* Assume success. Since the device corresponds to USB-MIDI spec, we assume
-           that the rest of the USB 2.0 spec is obeyed. */
-
-        u = (struct usb_midi_device *)kmalloc( sizeof(struct usb_midi_device), GFP_KERNEL );
-        if ( !u ) {
-                return NULL;
-        }
-        u->deviceName = NULL;
-        u->idVendor = le16_to_cpu(d->descriptor.idVendor);
-        u->idProduct = le16_to_cpu(d->descriptor.idProduct);
-        u->interface = ifnum;
-        u->altSetting = altSetting;
-        u->in[0].endpoint = -1;
-        u->in[0].cableId = -1;
-        u->out[0].endpoint = -1;
-        u->out[0].cableId = -1;
-
-
-        printk(KERN_INFO "usb-midi: Found MIDIStreaming device corresponding to Release %d.%02d of spec.\n",
-               (p1[4] >> 4) * 10 + (p1[4] & 0x0f ),
-               (p1[3] >> 4) * 10 + (p1[3] & 0x0f )
-                );
-
-        length = p1[5] | (p1[6] << 8);
-
-#ifdef HAVE_JACK_STRINGS
-        memset(jack2string, 0, sizeof(unsigned char) * 256);
-#endif
-
-        length -= p1[0];
-        for (p2 = p1 + p1[0]; length > 0; p2 = next) {
-                next = p2 + p2[0];
-                length -= p2[0];
-
-                if (p2[0] < 2 )
-                        break;
-                if (p2[1] != USB_DT_CS_INTERFACE)
-                        break;
-                if (p2[2] == MIDI_IN_JACK && p2[0] >= 6 ) {
-                        jack = p2[4];
-#ifdef HAVE_JACK_STRINGS
-                        jack2string[jack] = p2[5];
-#endif
-                        printk(KERN_INFO "usb-midi: Found IN Jack 0x%02x %s\n",
-                               jack, (p2[3] == EMBEDDED_JACK)?"EMBEDDED":"EXTERNAL" );
-                } else if ( p2[2] == MIDI_OUT_JACK && p2[0] >= 6) {
-                        pins = p2[5];
-                        if ( p2[0] < (6 + 2 * pins) )
-                                continue;
-                        jack = p2[4];
-#ifdef HAVE_JACK_STRINGS
-                        jack2string[jack] = p2[5 + 2 * pins];
-#endif
-                        printk(KERN_INFO "usb-midi: Found OUT Jack 0x%02x %s, %d pins\n",
-                               jack, (p2[3] == EMBEDDED_JACK)?"EMBEDDED":"EXTERNAL", pins );
-                } else if ( p2[2] == ELEMENT_DESCRIPTOR  && p2[0]  >= 10) {
-                        pins = p2[4];
-                        if ( p2[0] < (9 + 2 * pins ) )
-                                continue;
-                        nbytes = p2[8 + 2 * pins ];
-                        if ( p2[0] < (10 + 2 * pins + nbytes) )
-                                continue;
-                        longBits = 0L;
-                        for ( offset = 0, shift = 0; offset < nbytes && offset < 8; offset ++, shift += 8) {
-                                longBits |= ((long)(p2[9 + 2 * pins + offset])) << shift;
-                        }
-                        jack = p2[3];
-#ifdef HAVE_JACK_STRINGS
-                        jack2string[jack] = p2[9 + 2 * pins + nbytes];
-#endif
-                        printk(KERN_INFO "usb-midi: Found ELEMENT 0x%02x, %d/%d pins in/out, bits: 0x%016lx\n",
-                               jack, pins, (int)(p2[5 + 2 * pins]), (long)longBits );
-                } else {
-                }
-        }
-
-        iep=0;
-        oep=0;
-
-        if (quirks==0) {
-                /* MIDISTREAM */
-                p2 = NULL;
-                for (p1 = find_descriptor(buffer, bufSize, NULL, USB_DT_ENDPOINT,
-                                          ifnum, altSetting ); p1; p1 = next ) {
-                        next = find_descriptor(buffer, bufSize, p1, USB_DT_ENDPOINT,
-                                               ifnum, altSetting ); 
-                        p2 = find_descriptor(buffer, bufSize, p1, USB_DT_CS_ENDPOINT,
-                                             ifnum, altSetting ); 
-
-                        if ( p2 && next && ( p2 > next ) )
-                                p2 = NULL;
-
-                        if ( p1[0] < 9 || !p2 || p2[0] < 4 )
-                                continue;
-
-                        if ( (p1[2] & 0x80) == 0x80 ) {
-                                if ( iep < 15 ) {
-                                        pins = p2[3]; /* not pins -- actually "cables" */
-                                        if ( pins > 16 )
-                                                pins = 16;
-                                        u->in[iep].endpoint = p1[2];
-                                        u->in[iep].cableId = ( 1 << pins ) - 1;
-                                        if ( u->in[iep].cableId )
-                                                iep ++;
-                                        if ( iep < 15 ) {
-                                                u->in[iep].endpoint = -1;
-                                                u->in[iep].cableId = -1;
-                                        }
-                                }
-                        } else {
-                                if ( oep < 15 ) {
-                                        pins = p2[3]; /* not pins -- actually "cables" */
-                                        if ( pins > 16 )
-                                                pins = 16;
-                                        u->out[oep].endpoint = p1[2];
-                                        u->out[oep].cableId = ( 1 << pins ) - 1;
-                                        if ( u->out[oep].cableId )
-                                                oep ++;
-                                        if ( oep < 15 ) {
-                                                u->out[oep].endpoint = -1;
-                                                u->out[oep].cableId = -1;
-                                        }
-                                }
-                        }
-        
-                }
-        } else if (quirks==1) {
-                /* YAMAHA quirks */
-                for (p1 = find_descriptor(buffer, bufSize, NULL, USB_DT_ENDPOINT,
-                                          ifnum, altSetting ); p1; p1 = next ) {
-                        next = find_descriptor(buffer, bufSize, p1, USB_DT_ENDPOINT,
-                                               ifnum, altSetting ); 
-        
-                        if ( p1[0] < 7 )
-                                continue;
-
-                        if ( (p1[2] & 0x80) == 0x80 ) {
-                                if ( iep < 15 ) {
-                                        pins = iep+1;
-                                        if ( pins > 16 )
-                                                pins = 16;
-                                        u->in[iep].endpoint = p1[2];
-                                        u->in[iep].cableId = ( 1 << pins ) - 1;
-                                        if ( u->in[iep].cableId )
-                                                iep ++;
-                                        if ( iep < 15 ) {
-                                                u->in[iep].endpoint = -1;
-                                                u->in[iep].cableId = -1;
-                                        }
-                                }
-                        } else {
-                                if ( oep < 15 ) {
-                                        pins = oep+1;
-                                        u->out[oep].endpoint = p1[2];
-                                        u->out[oep].cableId = ( 1 << pins ) - 1;
-                                        if ( u->out[oep].cableId )
-                                                oep ++;
-                                        if ( oep < 15 ) {
-                                                u->out[oep].endpoint = -1;
-                                                u->out[oep].cableId = -1;
-                                        }
-                                }
-                        }
-        
-                }
-        }
-
-        if ( !iep && ! oep ) {
-                goto error_end;
-        }
-
-        return u;
-
-error_end:
-        kfree(u);
-        return NULL;
-}
-
-/* ------------------------------------------------------------------------- */
-
-/** Returns number between 0 and 16.
- *
- **/
-static int on_bits( unsigned short v )
-{
-        int i;
-        int ret=0;
-
-        for ( i=0 ; i<16 ; i++ ) {
-                if ( v & (1<<i) )
-                        ret++;
-        }
-
-        return ret;
-}
-
-
-/** USB-device will be interrogated for altSetting.
- *
- * Returns negative on error.
- * Called by allocUsbMidiDev();
- *
- **/
-
-static int get_alt_setting( struct usb_device *d, int ifnum )
-{
-        int alts, alt=0;
-        struct usb_interface *iface;
-        struct usb_host_interface *interface;
-        struct usb_endpoint_descriptor *ep;
-        int epin, epout;
-        int i;
-
-        iface = usb_ifnum_to_if( d, ifnum );
-        alts = iface->num_altsetting;
-
-        for ( alt=0 ; alt<alts ; alt++ ) {
-                interface = &iface->altsetting[alt];
-                epin = -1;
-                epout = -1;
-
-                for ( i=0 ; i<interface->desc.bNumEndpoints ; i++ ) {
-                        ep = &interface->endpoint[i].desc;
-                        if ( (ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK ) {
-                                continue;
-                        }
-                        if ( (ep->bEndpointAddress & USB_DIR_IN) && epin < 0 ) {
-                                epin = i;
-                        } else if ( epout < 0 ) {
-                                epout = i;
-                        }
-                        if ( epin >= 0 && epout >= 0 ) {
-                                return interface->desc.bAlternateSetting;
-                        }
-                }
-        }
-
-        return -ENODEV;
-}
-
-
-/* ------------------------------------------------------------------------- */
-
-
-/** Returns 0 if successful in allocating and registering internal structures.
- * Returns negative on failure.
- * Calls allocMidiDev which additionally registers /dev/midiXX devices.
- * Writes messages on success to indicate which /dev/midiXX is which physical
- * endpoint.
- *
- **/
-static int alloc_usb_midi_device( struct usb_device *d, struct usb_midi_state *s, struct usb_midi_device *u )
-{
-        struct usb_mididev **mdevs=NULL;
-        struct midi_in_endpoint *mins[15], *min;
-        struct midi_out_endpoint *mouts[15], *mout;
-        int inDevs=0, outDevs=0;
-        int inEndpoints=0, outEndpoints=0;
-        int inEndpoint, outEndpoint;
-        int inCableId, outCableId;
-        int i;
-        int devices = 0;
-        int alt = 0;
-
-        /* Obtain altSetting or die.. */
-        alt = u->altSetting;
-        if ( alt < 0 ) {
-                alt = get_alt_setting( d, u->interface );
-        }
-        if ( alt < 0 )
-                return -ENXIO;
-
-        /* Configure interface */
-        if ( usb_set_interface( d, u->interface, alt ) < 0 ) {
-                return -ENXIO;
-        }
-
-        for ( i = 0 ; i < 15 ; i++ ) {
-                mins[i] = NULL;
-                mouts[i] = NULL;
-        }
-
-        /* Begin Allocation */
-        while( inEndpoints < 15
-               && inDevs < maxdevices
-               && u->in[inEndpoints].cableId >= 0 ) {
-                inDevs += on_bits((unsigned short)u->in[inEndpoints].cableId);
-                mins[inEndpoints] = alloc_midi_in_endpoint( d, u->in[inEndpoints].endpoint );
-                if ( mins[inEndpoints] == NULL )
-                        goto error_end;
-                inEndpoints++;
-        }
-
-        while( outEndpoints < 15
-               && outDevs < maxdevices
-               && u->out[outEndpoints].cableId >= 0 ) {
-                outDevs += on_bits((unsigned short)u->out[outEndpoints].cableId);
-                mouts[outEndpoints] = alloc_midi_out_endpoint( d, u->out[outEndpoints].endpoint );
-                if ( mouts[outEndpoints] == NULL )
-                        goto error_end;
-                outEndpoints++;
-        }
-
-        devices = inDevs > outDevs ? inDevs : outDevs;
-        devices = maxdevices > devices ? devices : maxdevices;
-
-        /* obtain space for device name (iProduct) if not known. */
-        if ( ! u->deviceName ) {
-                mdevs = (struct usb_mididev **)
-                        kmalloc(sizeof(struct usb_mididevs *)*devices
-                                + sizeof(char) * 256, GFP_KERNEL);
-        } else {
-                mdevs = (struct usb_mididev **)
-                        kmalloc(sizeof(struct usb_mididevs *)*devices, GFP_KERNEL);
-        }
-
-        if ( !mdevs ) {
-                /* devices = 0; */
-                /* mdevs = NULL; */
-                goto error_end;
-        }
-        for ( i=0 ; i<devices ; i++ ) {
-                mdevs[i] = NULL;
-        }
-
-        /* obtain device name (iProduct) if not known. */
-        if ( ! u->deviceName ) {
-                u->deviceName = (char *) (mdevs + devices);
-                if ( ! d->have_langid && d->descriptor.iProduct) {
-                        alt = usb_get_string(d, 0, 0, u->deviceName, 250);
-                        if (alt < 0) {
-                                printk(KERN_INFO "error getting string descriptor 0 (error=%d)\n", alt);
-                        } else if (u->deviceName[0] < 4) {
-                                printk(KERN_INFO "string descriptor 0 too short (length = %d)\n", alt);
-                        } else {
-                                printk(KERN_INFO "string descriptor 0 found (length = %d)\n", alt);
-                                for(; alt >= 4; alt -= 2) {
-                                        i = u->deviceName[alt-2] | (u->deviceName[alt-1]<< 8);
-                                        printk(KERN_INFO "usb-midi: langid(%d) 0x%04x\n",
-                                               (alt-4) >> 1, i);
-                                        if ( ( ( i ^ ulangid ) & 0xff ) == 0 ) {
-                                                d->have_langid = 1;
-                                                d->string_langid = i;
-                                                printk(KERN_INFO "usb-midi: langid(match) 0x%04x\n", i);
-                                                if ( i == ulangid )
-                                                        break;
-                                        }
-                                }
-                        }
-                }
-                u->deviceName[0] = (char) 0;
-                if (d->descriptor.iProduct) {
-                        printk(KERN_INFO "usb-midi: fetchString(%d)\n", d->descriptor.iProduct);
-                        alt = usb_string(d, d->descriptor.iProduct, u->deviceName, 255);
-                        if( alt < 0 ) {
-                                u->deviceName[0] = (char) 0;
-                        }
-                        printk(KERN_INFO "usb-midi: fetchString = %d\n", alt);
-                } 
-                /* Failsafe */
-                if ( !u->deviceName[0] ) {
-                        if (le16_to_cpu(d->descriptor.idVendor) == USB_VENDOR_ID_ROLAND ) {
-                                strcpy(u->deviceName, "Unknown Roland");
-                        } else if (le16_to_cpu(d->descriptor.idVendor) == USB_VENDOR_ID_STEINBERG  ) {
-                                strcpy(u->deviceName, "Unknown Steinberg");
-                        } else if (le16_to_cpu(d->descriptor.idVendor) == USB_VENDOR_ID_YAMAHA ) {
-                                strcpy(u->deviceName, "Unknown Yamaha");
-                        } else {
-                                strcpy(u->deviceName, "Unknown");
-                        }
-                }
-        }
-
-        inEndpoint  = 0; inCableId  = -1;
-        outEndpoint = 0; outCableId = -1;
-
-        for ( i=0 ; i<devices ; i++ ) {
-                for ( inCableId ++ ;
-                      inEndpoint <15
-                              && mins[inEndpoint] 
-                              && !(u->in[inEndpoint].cableId & (1<<inCableId)) ;
-                      inCableId++ ) {
-                        if ( inCableId >= 16 ) {
-                                inEndpoint  ++;
-                                inCableId  = 0;
-                        }
-                }
-                min  = mins[inEndpoint];
-                for ( outCableId ++ ;
-                      outEndpoint <15
-                              && mouts[outEndpoint] 
-                              && !(u->out[outEndpoint].cableId & (1<<outCableId)) ;
-                      outCableId++ ) {
-                        if ( outCableId >= 16 ) {
-                                outEndpoint  ++;
-                                outCableId  = 0;
-                        }
-                }
-                mout = mouts[outEndpoint];
-
-                mdevs[i] = allocMidiDev( s, min, mout, inCableId, outCableId );
-                if ( mdevs[i] == NULL )
-                        goto error_end;
-
-        }
-
-        /* Success! */
-        for ( i=0 ; i<devices ; i++ ) {
-                list_add_tail( &mdevs[i]->list, &s->midiDevList );
-        }
-        for ( i=0 ; i<inEndpoints ; i++ ) {
-                list_add_tail( &mins[i]->list, &s->inEndpointList );
-        }
-        for ( i=0 ; i<outEndpoints ; i++ ) {
-                list_add_tail( &mouts[i]->list, &s->outEndpointList );
-        }
-
-        printk(KERN_INFO "usbmidi: found [ %s ] (0x%04x:0x%04x), attached:\n", u->deviceName, u->idVendor, u->idProduct );
-        for ( i=0 ; i<devices ; i++ ) {
-                int dm = (mdevs[i]->dev_midi-2)>>4;
-                if ( mdevs[i]->mout.ep != NULL && mdevs[i]->min.ep != NULL ) {
-                        printk(KERN_INFO "usbmidi: /dev/midi%02d: in (ep:%02x cid:%2d bufsiz:%2d) out (ep:%02x cid:%2d bufsiz:%2d)\n", 
-                               dm,
-                               mdevs[i]->min.ep->endpoint|USB_DIR_IN, mdevs[i]->min.cableId, mdevs[i]->min.ep->recvBufSize,
-                               mdevs[i]->mout.ep->endpoint, mdevs[i]->mout.cableId, mdevs[i]->mout.ep->bufSize);
-                } else if ( mdevs[i]->min.ep != NULL ) {
-                        printk(KERN_INFO "usbmidi: /dev/midi%02d: in (ep:%02x cid:%2d bufsiz:%02d)\n", 
-                               dm,
-                               mdevs[i]->min.ep->endpoint|USB_DIR_IN, mdevs[i]->min.cableId, mdevs[i]->min.ep->recvBufSize);
-                } else if ( mdevs[i]->mout.ep != NULL ) {
-                        printk(KERN_INFO "usbmidi: /dev/midi%02d: out (ep:%02x cid:%2d bufsiz:%02d)\n", 
-                               dm,
-                               mdevs[i]->mout.ep->endpoint, mdevs[i]->mout.cableId, mdevs[i]->mout.ep->bufSize);
-                }
-        }
-
-        kfree(mdevs);
-        return 0;
-
- error_end:
-        if ( mdevs != NULL ) {
-                for ( i=0 ; i<devices ; i++ ) {
-                        if ( mdevs[i] != NULL ) {
-                                unregister_sound_midi( mdevs[i]->dev_midi );
-                                kfree(mdevs[i]);
-                        }
-                }
-                kfree(mdevs);
-        }
-
-        for ( i=0 ; i<15 ; i++ ) {
-                if ( mins[i] != NULL ) {
-                        remove_midi_in_endpoint( mins[i] );
-                }
-                if ( mouts[i] != NULL ) {
-                        remove_midi_out_endpoint( mouts[i] );
-                }
-        }
-
-        return -ENOMEM;
-}
-
-/* ------------------------------------------------------------------------- */
-
-/** Attempt to scan YAMAHA's device descriptor and detect correct values of
- *  them.
- *  Return 0 on succes, negative on failure.
- *  Called by usb_midi_probe();
- **/
-
-static int detect_yamaha_device( struct usb_device *d,
-                struct usb_interface *iface, unsigned int ifnum,
-                struct usb_midi_state *s)
-{
-        struct usb_host_interface *interface;
-        struct usb_midi_device *u;
-        unsigned char *buffer;
-        int bufSize;
-        int i;
-        int alts=-1;
-        int ret;
-
-        if (le16_to_cpu(d->descriptor.idVendor) != USB_VENDOR_ID_YAMAHA) {
-                return -EINVAL;
-        }
-
-        for ( i=0 ; i < iface->num_altsetting; i++ ) {
-                interface = iface->altsetting + i;
-
-                if ( interface->desc.bInterfaceClass != 255 ||
-                     interface->desc.bInterfaceSubClass != 0 )
-                        continue;
-                alts = interface->desc.bAlternateSetting;
-        }
-        if ( alts == -1 ) {
-                return -EINVAL;
-        }
-
-        printk(KERN_INFO "usb-midi: Found YAMAHA USB-MIDI device on dev %04x:%04x, iface %d\n",
-               le16_to_cpu(d->descriptor.idVendor),
-               le16_to_cpu(d->descriptor.idProduct), ifnum);
-
-        i = d->actconfig - d->config;
-        buffer = d->rawdescriptors[i];
-        bufSize = le16_to_cpu(d->actconfig->desc.wTotalLength);
-
-        u = parse_descriptor( d, buffer, bufSize, ifnum, alts, 1);
-        if ( u == NULL ) {
-                return -EINVAL;
-        }
-
-        ret = alloc_usb_midi_device( d, s, u );
-
-        kfree(u);
-
-        return ret;
-}
-
-
-/** Scan table of known devices which are only partially compliant with 
- * the MIDIStreaming specification.
- * Called by usb_midi_probe();
- *
- **/
-
-static int detect_vendor_specific_device( struct usb_device *d, unsigned int ifnum, struct usb_midi_state *s )
-{
-        struct usb_midi_device *u;
-        int i;
-        int ret = -ENXIO;
-
-        for ( i=0; i<VENDOR_SPECIFIC_USB_MIDI_DEVICES ; i++ ) {
-                u=&(usb_midi_devices[i]);
-    
-                if ( le16_to_cpu(d->descriptor.idVendor) != u->idVendor ||
-                     le16_to_cpu(d->descriptor.idProduct) != u->idProduct ||
-                     ifnum != u->interface )
-                        continue;
-
-                ret = alloc_usb_midi_device( d, s, u );
-                break;
-        }
-
-        return ret;
-}
-
-
-/** Attempt to match any config of an interface to a MIDISTREAMING interface.
- *  Returns 0 on success, negative on failure.
- * Called by usb_midi_probe();
- **/
-static int detect_midi_subclass(struct usb_device *d,
-                struct usb_interface *iface, unsigned int ifnum,
-                struct usb_midi_state *s)
-{
-        struct usb_host_interface *interface;
-        struct usb_midi_device *u;
-        unsigned char *buffer;
-        int bufSize;
-        int i;
-        int alts=-1;
-        int ret;
-
-        for ( i=0 ; i < iface->num_altsetting; i++ ) {
-                interface = iface->altsetting + i;
-
-                if ( interface->desc.bInterfaceClass != USB_CLASS_AUDIO ||
-                     interface->desc.bInterfaceSubClass != USB_SUBCLASS_MIDISTREAMING )
-                        continue;
-                alts = interface->desc.bAlternateSetting;
-        }
-        if ( alts == -1 ) {
-                return -EINVAL;
-        }
-
-        printk(KERN_INFO "usb-midi: Found MIDISTREAMING on dev %04x:%04x, iface %d\n",
-               le16_to_cpu(d->descriptor.idVendor), 
-               le16_to_cpu(d->descriptor.idProduct), ifnum);
-
-
-        /* From USB Spec v2.0, Section 9.5.
-           If the class or vendor specific descriptors use the same format
-           as standard descriptors (e.g., start with a length byte and
-           followed by a type byte), they must be returned interleaved with
-           standard descriptors in the configuration information returned by
-           a GetDescriptor(Configuration) request. In this case, the class
-           or vendor-specific descriptors must follow a related standard
-           descriptor they modify or extend.
-        */
-
-        i = d->actconfig - d->config;
-        buffer = d->rawdescriptors[i];
-        bufSize = le16_to_cpu(d->actconfig->desc.wTotalLength);
-
-        u = parse_descriptor( d, buffer, bufSize, ifnum, alts, 0);
-        if ( u == NULL ) {
-                return -EINVAL;
-        }
-
-        ret = alloc_usb_midi_device( d, s, u );
-
-        kfree(u);
-
-        return ret;
-}
-
-
-/** When user has requested a specific device, match it exactly.
- *
- * Uses uvendor, uproduct, uinterface, ualt, umin, umout and ucable.
- * Called by usb_midi_probe();
- *
- **/
-static int detect_by_hand(struct usb_device *d, unsigned int ifnum, struct usb_midi_state *s)
-{
-        struct usb_midi_device u;
-
-        if ( le16_to_cpu(d->descriptor.idVendor) != uvendor ||
-             le16_to_cpu(d->descriptor.idProduct) != uproduct ||
-             ifnum != uinterface ) {
-                return -EINVAL;
-        }
-
-        if ( ualt < 0 )
-                ualt = -1;
-
-        if ( umin   < 0 || umin   > 15 )
-                umin   = 0x01 | USB_DIR_IN;
-        if ( umout  < 0 || umout  > 15 )
-                umout  = 0x01;
-        if ( ucable < 0 || ucable > 15 )
-                ucable = 0;
-
-        u.deviceName = NULL; /* A flag for alloc_usb_midi_device to get device
-                                name from device. */
-        u.idVendor   = uvendor;
-        u.idProduct  = uproduct;
-        u.interface  = uinterface;
-        u.altSetting = ualt;
-
-        u.in[0].endpoint    = umin;
-        u.in[0].cableId     = (1<<ucable);
-
-        u.out[0].endpoint   = umout;
-        u.out[0].cableId    = (1<<ucable);
-
-        return alloc_usb_midi_device( d, s, &u );
-}
-
-
-
-/* ------------------------------------------------------------------------- */
-
-static int usb_midi_probe(struct usb_interface *intf, 
-                          const struct usb_device_id *id)
-{
-        struct usb_midi_state *s;
-        struct usb_device *dev = interface_to_usbdev(intf);
-        int ifnum = intf->cur_altsetting->desc.bInterfaceNumber;
-
-        s = (struct usb_midi_state *)kmalloc(sizeof(struct usb_midi_state), GFP_KERNEL);
-        if ( !s )
-                return -ENOMEM;
-
-        memset( s, 0, sizeof(struct usb_midi_state) );
-        INIT_LIST_HEAD(&s->midiDevList);
-        INIT_LIST_HEAD(&s->inEndpointList);
-        INIT_LIST_HEAD(&s->outEndpointList);
-        s->usbdev = dev;
-        s->count  = 0;
-        spin_lock_init(&s->lock);
-
-        if (
-                detect_by_hand( dev, ifnum, s ) &&
-                detect_midi_subclass( dev, intf, ifnum, s ) &&
-                detect_vendor_specific_device( dev, ifnum, s ) &&
-                detect_yamaha_device( dev, intf, ifnum, s) ) {
-                kfree(s);
-                return -EIO;
-        }
-
-        down(&open_sem);
-        list_add_tail(&s->mididev, &mididevs);
-        up(&open_sem);
-
-        usb_set_intfdata (intf, s);
-        return 0;
-}
-
-
-static void usb_midi_disconnect(struct usb_interface *intf)
-{
-        struct usb_midi_state *s = usb_get_intfdata (intf);
-        struct usb_mididev    *m;
-
-        if ( !s )
-                return;
-
-        if ( s == (struct usb_midi_state *)-1 ) {
-                return;
-        }
-        if ( !s->usbdev ) {
-                return;
-        }
-        down(&open_sem);
-        list_del(&s->mididev);
-        INIT_LIST_HEAD(&s->mididev);
-        s->usbdev = NULL;
-        usb_set_intfdata (intf, NULL);
-
-        list_for_each_entry(m, &s->midiDevList, list) {
-                wake_up(&(m->min.ep->wait));
-                wake_up(&(m->mout.ep->wait));
-                if ( m->dev_midi >= 0 ) {
-                        unregister_sound_midi(m->dev_midi);
-                }
-                m->dev_midi = -1;
-        }
-        release_midi_device(s);
-        wake_up(&open_wait);
-}
-
-/* we want to look at all devices by hand */
-static struct usb_device_id id_table[] = {
-        {.driver_info = 42},
-        {}
-};
-
-static struct usb_driver usb_midi_driver = {
-        .name =         "midi",
-        .probe =        usb_midi_probe,
-        .disconnect =   usb_midi_disconnect,
-        .id_table =     id_table,
-};
-
-/* ------------------------------------------------------------------------- */
-
-static int __init usb_midi_init(void)
-{
-        return usb_register(&usb_midi_driver);
-}
-
-static void __exit usb_midi_exit(void)
-{
-        usb_deregister(&usb_midi_driver);
-}
-
-module_init(usb_midi_init) ;
-module_exit(usb_midi_exit) ;
-
-#ifdef HAVE_ALSA_SUPPORT
-#define SNDRV_MAIN_OBJECT_FILE
-#include "../../include/driver.h"
-#include "../../include/control.h"
-#include "../../include/info.h"
-#include "../../include/cs46xx.h"
-
-/* ------------------------------------------------------------------------- */
-
-static int snd_usbmidi_input_close(snd_rawmidi_substream_t * substream)
-{
-        return 0;
-}
-
-static int snd_usbmidi_input_open(snd_rawmidi_substream_t * substream )
-{
-        return 0;
-}
-
-static void snd_usbmidi_input_trigger(snd_rawmidi_substream_t * substream, int up)
-{
-        return 0;
-}
-
-
-/* ------------------------------------------------------------------------- */
-
-static int snd_usbmidi_output_close(snd_rawmidi_substream_t * substream)
-{
-        return 0;
-}
-
-static int snd_usbmidi_output_open(snd_rawmidi_substream_t * substream)
-{
-        return 0;
-}
-
-static void snd_usb_midi_output_trigger(snd_rawmidi_substream_t * substream,
-                                        int up)
-{
-        return 0;
-}
-
-/* ------------------------------------------------------------------------- */
-
-static snd_rawmidi_ops_t snd_usbmidi_output =
-{
-        .open =         snd_usbmidi_output_open,
-        .close =        snd_usbmidi_output_close,
-        .trigger =      snd_usbmidi_output_trigger,
-};
-static snd_rawmidi_ops_t snd_usbmidi_input =
-{
-        .open =         snd_usbmidi_input_open,
-        .close =        snd_usbmidi_input_close,
-        .trigger =      snd_usbmidi_input_trigger,
-};
-
-int snd_usbmidi_midi(cs46xx_t *chip, int device, snd_rawmidi_t **rrawmidi)
-{
-        snd_rawmidi_t *rmidi;
-        int err;
-
-        if (rrawmidi)
-                *rrawmidi = NULL;
-        if ((err = snd_rawmidi_new(chip->card, "USB-MIDI", device, 1, 1, &rmidi)) < 0)
-                return err;
-        strcpy(rmidi->name, "USB-MIDI");
-
-        snd_rawmidi_set_ops( rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &snd_usbmidi_output );
-        snd_rawmidi_set_ops( rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &snd_usbmidi_input );
-
-        rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT | SNDRV_RAWMIDI_INFO_INPUT | SNDRV_RAWMIDI_INFO_DUPLEX;
-
-        rmidi->private_data = chip;
-        chip->rmidi = rmidi;
-        if (rrawmidi)
-                *rrawmidi = NULL;
-
-        return 0;
-}
-
-int snd_usbmidi_create( snd_card_t * card,
-                        struct pci_dev * pci,
-                        usbmidi_t ** rchip )
-{
-        usbmidi_t *chip;
-        int err, idx;
-        snd_region_t *region;
-        static snd_device_opt_t ops = {
-                .dev_free = snd_usbmidi_dev_free,
-        };
-
-        *rchip = NULL;
-        chip = snd_magic_kcalloc( usbmidi_t, 0, GFP_KERNEL );
-        if ( chip == NULL )
-                return -ENOMEM;
-}
-
-EXPORT_SYMBOL(snd_usbmidi_create);
-EXPORT_SYMBOL(snd_usbmidi_midi);
-#endif /* HAVE_ALSA_SUPPORT */
-
diff --git a/drivers/usb/class/usb-midi.h b/drivers/usb/class/usb-midi.h
deleted file mode 100644
index 358cdef8492e..000000000000
--- a/drivers/usb/class/usb-midi.h
+++ /dev/null
@@ -1,164 +0,0 @@
-/*
-  usb-midi.h  --  USB-MIDI driver
-
-  Copyright (C) 2001
-      NAGANO Daisuke <breeze.nagano@nifty.ne.jp>
-
-  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, or (at your option)
-  any later version.
-
-  This program is distributed in the hope that it will be useful,
-  but WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-  GNU General Public License for more details.
-
-  You should have received a copy of the GNU General Public License
-  along with this program; if not, write to the Free Software
-  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-/* ------------------------------------------------------------------------- */
-
-#ifndef _USB_MIDI_H_
-#define _USB_MIDI_H_
-
-#ifndef USB_SUBCLASS_MIDISTREAMING
-#define USB_SUBCLASS_MIDISTREAMING      3
-#endif
-
-/* ------------------------------------------------------------------------- */
-/* Roland MIDI Devices */
-
-#define USB_VENDOR_ID_ROLAND            0x0582
-#define USBMIDI_ROLAND_UA100G           0x0000
-#define USBMIDI_ROLAND_MPU64            0x0002
-#define USBMIDI_ROLAND_SC8850           0x0003
-#define USBMIDI_ROLAND_SC8820           0x0007
-#define USBMIDI_ROLAND_UM2              0x0005
-#define USBMIDI_ROLAND_UM1              0x0009
-#define USBMIDI_ROLAND_PC300            0x0008
-
-/* YAMAHA MIDI Devices */
-#define USB_VENDOR_ID_YAMAHA            0x0499
-#define USBMIDI_YAMAHA_MU1000           0x1001
-
-/* Steinberg MIDI Devices */
-#define USB_VENDOR_ID_STEINBERG         0x0763
-#define USBMIDI_STEINBERG_USB2MIDI      0x1001
-
-/* Mark of the Unicorn MIDI Devices */
-#define USB_VENDOR_ID_MOTU              0x07fd
-#define USBMIDI_MOTU_FASTLANE           0x0001
-
-/* ------------------------------------------------------------------------- */
-/* Supported devices */
-
-struct usb_midi_endpoint {
-        int  endpoint;
-        int  cableId; /* if bit-n == 1 then cableId-n is enabled (n: 0 - 15) */
-};
-
-struct usb_midi_device {
-        char  *deviceName;
-
-        u16    idVendor;
-        u16    idProduct;
-        int    interface;
-        int    altSetting; /* -1: auto detect */
-
-        struct usb_midi_endpoint in[15];
-        struct usb_midi_endpoint out[15];
-};
-
-static struct usb_midi_device usb_midi_devices[] = {
-  { /* Roland UM-1 */
-    "Roland UM-1",
-    USB_VENDOR_ID_ROLAND, USBMIDI_ROLAND_UM1, 2, -1,
-    { { 0x81, 1 }, {-1, -1} },
-    { { 0x01, 1,}, {-1, -1} },
-  },
-
-  { /* Roland UM-2 */
-    "Roland UM-2" ,
-    USB_VENDOR_ID_ROLAND, USBMIDI_ROLAND_UM2, 2, -1,
-    { { 0x81, 3 }, {-1, -1} },
-    { { 0x01, 3,}, {-1, -1} },
-  },
-
-/** Next entry courtesy research by Michael Minn <michael@michaelminn.com> **/
-  { /* Roland UA-100 */
-    "Roland UA-100",
-    USB_VENDOR_ID_ROLAND, USBMIDI_ROLAND_UA100G, 2, -1,
-    { { 0x82, 7 }, {-1, -1} }, /** cables 0,1 and 2 for SYSEX **/
-    { { 0x02, 7 }, {-1, -1} },
-  },
-
-/** Next entry courtesy research by Michael Minn <michael@michaelminn.com> **/
-  { /* Roland SC8850 */
-    "Roland SC8850",
-    USB_VENDOR_ID_ROLAND, USBMIDI_ROLAND_SC8850, 2, -1,
-    { { 0x81, 0x3f }, {-1, -1} },
-    { { 0x01, 0x3f }, {-1, -1} },
-  },
-
-  { /* Roland SC8820 */
-    "Roland SC8820",
-    USB_VENDOR_ID_ROLAND, USBMIDI_ROLAND_SC8820, 2, -1,
-    { { 0x81, 0x13 }, {-1, -1} },
-    { { 0x01, 0x13 }, {-1, -1} },
-  },
-
-  { /* Roland SC8820 */
-    "Roland SC8820",
-    USB_VENDOR_ID_ROLAND, USBMIDI_ROLAND_SC8820, 2, -1,
-    { { 0x81, 17 }, {-1, -1} },
-    { { 0x01, 17 }, {-1, -1} },
-  },
-
-  { /* YAMAHA MU1000 */
-    "YAMAHA MU1000",
-    USB_VENDOR_ID_YAMAHA, USBMIDI_YAMAHA_MU1000, 0, -1, 
-    { { 0x81, 1 }, {-1, -1} },
-    { { 0x01, 15 }, {-1, -1} },
-  },
-  { /* Roland PC-300 */
-    "Roland PC-300",
-    USB_VENDOR_ID_ROLAND, USBMIDI_ROLAND_PC300, 2, -1, 
-    { { 0x81, 1 }, {-1, -1} },
-    { { 0x01, 1 }, {-1, -1} },
-  },
-  { /* MOTU Fastlane USB */
-    "MOTU Fastlane USB",
-    USB_VENDOR_ID_MOTU, USBMIDI_MOTU_FASTLANE, 1, 0,
-    { { 0x82, 3 }, {-1, -1} },
-    { { 0x02, 3 }, {-1, -1} },
-  }
-};
-
-#define VENDOR_SPECIFIC_USB_MIDI_DEVICES (sizeof(usb_midi_devices)/sizeof(struct usb_midi_device))
-
-/* for Hot-Plugging */
-
-static struct usb_device_id usb_midi_ids [] = {
-        { .match_flags = (USB_DEVICE_ID_MATCH_INT_CLASS | USB_DEVICE_ID_MATCH_INT_SUBCLASS),
-          .bInterfaceClass = USB_CLASS_AUDIO, .bInterfaceSubClass = USB_SUBCLASS_MIDISTREAMING},
-        { USB_DEVICE( USB_VENDOR_ID_ROLAND, USBMIDI_ROLAND_UM1    ) },
-        { USB_DEVICE( USB_VENDOR_ID_ROLAND, USBMIDI_ROLAND_UM2    ) },
-        { USB_DEVICE( USB_VENDOR_ID_ROLAND, USBMIDI_ROLAND_UA100G ) },
-        { USB_DEVICE( USB_VENDOR_ID_ROLAND, USBMIDI_ROLAND_PC300 ) },
-        { USB_DEVICE( USB_VENDOR_ID_ROLAND, USBMIDI_ROLAND_SC8850 ) },
-        { USB_DEVICE( USB_VENDOR_ID_ROLAND, USBMIDI_ROLAND_SC8820 ) },
-        { USB_DEVICE( USB_VENDOR_ID_YAMAHA, USBMIDI_YAMAHA_MU1000 ) },
-        { USB_DEVICE( USB_VENDOR_ID_MOTU,   USBMIDI_MOTU_FASTLANE ) },
-/*      { USB_DEVICE( USB_VENDOR_ID_STEINBERG, USBMIDI_STEINBERG_USB2MIDI ) },*/
-        { } /* Terminating entry */
-};
-
-MODULE_DEVICE_TABLE (usb, usb_midi_ids);
-
-/* ------------------------------------------------------------------------- */
-#endif /* _USB_MIDI_H_ */
-
-
diff --git a/drivers/usb/class/usblp.c b/drivers/usb/class/usblp.c
index d34848ac30b0..48dee4b8d8e5 100644
--- a/drivers/usb/class/usblp.c
+++ b/drivers/usb/class/usblp.c
@@ -55,6 +55,7 @@
 #include <linux/init.h>
 #include <linux/slab.h>
 #include <linux/lp.h>
+#include <linux/mutex.h>
 #undef DEBUG
 #include <linux/usb.h>
 
@@ -223,7 +224,7 @@ static int usblp_cache_device_id_string(struct usblp *usblp);
 
 /* forward reference to make our lives easier */
 static struct usb_driver usblp_driver;
-static DECLARE_MUTEX(usblp_sem);        /* locks the existence of usblp's */
+static DEFINE_MUTEX(usblp_mutex);       /* locks the existence of usblp's */
 
 /*
  * Functions for usblp control messages.
@@ -351,7 +352,7 @@ static int usblp_open(struct inode *inode, struct file *file)
         if (minor < 0)
                 return -ENODEV;
 
-        down (&usblp_sem);
+        mutex_lock (&usblp_mutex);
 
         retval = -ENODEV;
         intf = usb_find_interface(&usblp_driver, minor);
@@ -399,7 +400,7 @@ static int usblp_open(struct inode *inode, struct file *file)
                 }
         }
 out:
-        up (&usblp_sem);
+        mutex_unlock (&usblp_mutex);
         return retval;
 }
 
@@ -425,13 +426,13 @@ static int usblp_release(struct inode *inode, struct file *file)
 {
         struct usblp *usblp = file->private_data;
 
-        down (&usblp_sem);
+        mutex_lock (&usblp_mutex);
         usblp->used = 0;
         if (usblp->present) {
                 usblp_unlink_urbs(usblp);
         } else          /* finish cleanup from disconnect */
                 usblp_cleanup (usblp);
-        up (&usblp_sem);
+        mutex_unlock (&usblp_mutex);
         return 0;
 }
 
@@ -1152,7 +1153,7 @@ static void usblp_disconnect(struct usb_interface *intf)
 
         device_remove_file(&intf->dev, &dev_attr_ieee1284_id);
 
-        down (&usblp_sem);
+        mutex_lock (&usblp_mutex);
         down (&usblp->sem);
         usblp->present = 0;
         usb_set_intfdata (intf, NULL);
@@ -1166,7 +1167,7 @@ static void usblp_disconnect(struct usb_interface *intf)
 
         if (!usblp->used)
                 usblp_cleanup (usblp);
-        up (&usblp_sem);
+        mutex_unlock (&usblp_mutex);
 }
 
 static struct usb_device_id usblp_ids [] = {
diff --git a/drivers/usb/core/devices.c b/drivers/usb/core/devices.c
index 2684e15b813b..c0f37343a276 100644
--- a/drivers/usb/core/devices.c
+++ b/drivers/usb/core/devices.c
@@ -57,6 +57,7 @@
 #include <linux/usb.h>
 #include <linux/smp_lock.h>
 #include <linux/usbdevice_fs.h>
+#include <linux/mutex.h>
 #include <asm/uaccess.h>
 
 #include "usb.h"
@@ -570,7 +571,7 @@ static ssize_t usb_device_read(struct file *file, char __user *buf, size_t nbyte
         if (!access_ok(VERIFY_WRITE, buf, nbytes))
                 return -EFAULT;
 
-        down (&usb_bus_list_lock);
+        mutex_lock(&usb_bus_list_lock);
         /* print devices for all busses */
         list_for_each_entry(bus, &usb_bus_list, bus_list) {
                 /* recurse through all children of the root hub */
@@ -580,12 +581,12 @@ static ssize_t usb_device_read(struct file *file, char __user *buf, size_t nbyte
                 ret = usb_device_dump(&buf, &nbytes, &skip_bytes, ppos, bus->root_hub, bus, 0, 0, 0);
                 usb_unlock_device(bus->root_hub);
                 if (ret < 0) {
-                        up(&usb_bus_list_lock);
+                        mutex_unlock(&usb_bus_list_lock);
                         return ret;
                 }
                 total_written += ret;
         }
-        up (&usb_bus_list_lock);
+        mutex_unlock(&usb_bus_list_lock);
         return total_written;
 }
 
diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
index 2b68998fe4b3..545da37afca7 100644
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -134,26 +134,21 @@ static ssize_t usbdev_read(struct file *file, char __user *buf, size_t nbytes, l
         }
 
         if (pos < sizeof(struct usb_device_descriptor)) {
-                struct usb_device_descriptor *desc = kmalloc(sizeof(*desc), GFP_KERNEL);
-                if (!desc) {
-                        ret = -ENOMEM;
-                        goto err;
-                }
-                memcpy(desc, &dev->descriptor, sizeof(dev->descriptor));
-                le16_to_cpus(&desc->bcdUSB);
-                le16_to_cpus(&desc->idVendor);
-                le16_to_cpus(&desc->idProduct);
-                le16_to_cpus(&desc->bcdDevice);
+                struct usb_device_descriptor temp_desc ; /* 18 bytes - fits on the stack */
+
+                memcpy(&temp_desc, &dev->descriptor, sizeof(dev->descriptor));
+                le16_to_cpus(&temp_desc.bcdUSB);
+                le16_to_cpus(&temp_desc.idVendor);
+                le16_to_cpus(&temp_desc.idProduct);
+                le16_to_cpus(&temp_desc.bcdDevice);
 
                 len = sizeof(struct usb_device_descriptor) - pos;
                 if (len > nbytes)
                         len = nbytes;
-                if (copy_to_user(buf, ((char *)desc) + pos, len)) {
-                        kfree(desc);
+                if (copy_to_user(buf, ((char *)&temp_desc) + pos, len)) {
                         ret = -EFAULT;
                         goto err;
                 }
-                kfree(desc);
 
                 *ppos += len;
                 buf += len;
@@ -498,7 +493,8 @@ static int check_ctrlrecip(struct dev_state *ps, unsigned int requesttype, unsig
 {
         int ret = 0;
 
-        if (ps->dev->state != USB_STATE_CONFIGURED)
+        if (ps->dev->state != USB_STATE_ADDRESS
+         && ps->dev->state != USB_STATE_CONFIGURED)
                 return -EHOSTUNREACH;
         if (USB_TYPE_VENDOR == (USB_TYPE_MASK & requesttype))
                 return 0;
diff --git a/drivers/usb/core/hcd-pci.c b/drivers/usb/core/hcd-pci.c
index 29b5b2a6e183..e0afb5ad29e5 100644
--- a/drivers/usb/core/hcd-pci.c
+++ b/drivers/usb/core/hcd-pci.c
@@ -264,14 +264,19 @@ int usb_hcd_pci_suspend (struct pci_dev *dev, pm_message_t message)
                  */
                 retval = pci_set_power_state (dev, PCI_D3hot);
                 if (retval == 0) {
-                        dev_dbg (hcd->self.controller, "--> PCI D3\n");
+                        int wake = device_can_wakeup(&hcd->self.root_hub->dev);
+
+                        wake = wake && device_may_wakeup(hcd->self.controller);
+
+                        dev_dbg (hcd->self.controller, "--> PCI D3%s\n",
+                                        wake ? "/wakeup" : "");
 
                         /* Ignore these return values.  We rely on pci code to
                          * reject requests the hardware can't implement, rather
                          * than coding the same thing.
                          */
-                        (void) pci_enable_wake (dev, PCI_D3hot, hcd->remote_wakeup);
-                        (void) pci_enable_wake (dev, PCI_D3cold, hcd->remote_wakeup);
+                        (void) pci_enable_wake (dev, PCI_D3hot, wake);
+                        (void) pci_enable_wake (dev, PCI_D3cold, wake);
                 } else {
                         dev_dbg (&dev->dev, "PCI D3 suspend fail, %d\n",
                                         retval);
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index 0018bbc4de34..fbd938d4ea58 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -34,6 +34,7 @@
 #include <asm/scatterlist.h>
 #include <linux/device.h>
 #include <linux/dma-mapping.h>
+#include <linux/mutex.h>
 #include <asm/irq.h>
 #include <asm/byteorder.h>
 
@@ -93,7 +94,7 @@ struct usb_busmap {
 static struct usb_busmap busmap;
 
 /* used when updating list of hcds */
-DECLARE_MUTEX (usb_bus_list_lock);      /* exported only for usbfs */
+DEFINE_MUTEX(usb_bus_list_lock);        /* exported only for usbfs */
 EXPORT_SYMBOL_GPL (usb_bus_list_lock);
 
 /* used for controlling access to virtual root hubs */
@@ -366,21 +367,39 @@ static int rh_call_control (struct usb_hcd *hcd, struct urb *urb)
 
         /* DEVICE REQUESTS */
 
+        /* The root hub's remote wakeup enable bit is implemented using
+         * driver model wakeup flags.  If this system supports wakeup
+         * through USB, userspace may change the default "allow wakeup"
+         * policy through sysfs or these calls.
+         *
+         * Most root hubs support wakeup from downstream devices, for
+         * runtime power management (disabling USB clocks and reducing
+         * VBUS power usage).  However, not all of them do so; silicon,
+         * board, and BIOS bugs here are not uncommon, so these can't
+         * be treated quite like external hubs.
+         *
+         * Likewise, not all root hubs will pass wakeup events upstream,
+         * to wake up the whole system.  So don't assume root hub and
+         * controller capabilities are identical.
+         */
+
         case DeviceRequest | USB_REQ_GET_STATUS:
-                tbuf [0] = (hcd->remote_wakeup << USB_DEVICE_REMOTE_WAKEUP)
+                tbuf [0] = (device_may_wakeup(&hcd->self.root_hub->dev)
+                                        << USB_DEVICE_REMOTE_WAKEUP)
                                 | (1 << USB_DEVICE_SELF_POWERED);
                 tbuf [1] = 0;
                 len = 2;
                 break;
         case DeviceOutRequest | USB_REQ_CLEAR_FEATURE:
                 if (wValue == USB_DEVICE_REMOTE_WAKEUP)
-                        hcd->remote_wakeup = 0;
+                        device_set_wakeup_enable(&hcd->self.root_hub->dev, 0);
                 else
                         goto error;
                 break;
         case DeviceOutRequest | USB_REQ_SET_FEATURE:
-                if (hcd->can_wakeup && wValue == USB_DEVICE_REMOTE_WAKEUP)
-                        hcd->remote_wakeup = 1;
+                if (device_can_wakeup(&hcd->self.root_hub->dev)
+                                && wValue == USB_DEVICE_REMOTE_WAKEUP)
+                        device_set_wakeup_enable(&hcd->self.root_hub->dev, 1);
                 else
                         goto error;
                 break;
@@ -409,7 +428,7 @@ static int rh_call_control (struct usb_hcd *hcd, struct urb *urb)
                                 bufp = fs_rh_config_descriptor;
                                 len = sizeof fs_rh_config_descriptor;
                         }
-                        if (hcd->can_wakeup)
+                        if (device_can_wakeup(&hcd->self.root_hub->dev))
                                 patch_wakeup = 1;
                         break;
                 case USB_DT_STRING << 8:
@@ -761,14 +780,14 @@ static int usb_register_bus(struct usb_bus *bus)
 {
         int busnum;
 
-        down (&usb_bus_list_lock);
+        mutex_lock(&usb_bus_list_lock);
         busnum = find_next_zero_bit (busmap.busmap, USB_MAXBUS, 1);
         if (busnum < USB_MAXBUS) {
                 set_bit (busnum, busmap.busmap);
                 bus->busnum = busnum;
         } else {
                 printk (KERN_ERR "%s: too many buses\n", usbcore_name);
-                up(&usb_bus_list_lock);
+                mutex_unlock(&usb_bus_list_lock);
                 return -E2BIG;
         }
 
@@ -776,7 +795,7 @@ static int usb_register_bus(struct usb_bus *bus)
                                              bus->controller, "usb_host%d", busnum);
         if (IS_ERR(bus->class_dev)) {
                 clear_bit(busnum, busmap.busmap);
-                up(&usb_bus_list_lock);
+                mutex_unlock(&usb_bus_list_lock);
                 return PTR_ERR(bus->class_dev);
         }
 
@@ -784,7 +803,7 @@ static int usb_register_bus(struct usb_bus *bus)
 
         /* Add it to the local list of buses */
         list_add (&bus->bus_list, &usb_bus_list);
-        up (&usb_bus_list_lock);
+        mutex_unlock(&usb_bus_list_lock);
 
         usb_notify_add_bus(bus);
 
@@ -809,9 +828,9 @@ static void usb_deregister_bus (struct usb_bus *bus)
          * controller code, as well as having it call this when cleaning
          * itself up
          */
-        down (&usb_bus_list_lock);
+        mutex_lock(&usb_bus_list_lock);
         list_del (&bus->bus_list);
-        up (&usb_bus_list_lock);
+        mutex_unlock(&usb_bus_list_lock);
 
         usb_notify_remove_bus(bus);
 
@@ -822,18 +841,17 @@ static void usb_deregister_bus (struct usb_bus *bus)
 
 /**
  * register_root_hub - called by usb_add_hcd() to register a root hub
- * @usb_dev: the usb root hub device to be registered.
  * @hcd: host controller for this root hub
  *
  * This function registers the root hub with the USB subsystem.  It sets up
- * the device properly in the device tree and stores the root_hub pointer
- * in the bus structure, then calls usb_new_device() to register the usb
- * device.  It also assigns the root hub's USB address (always 1).
+ * the device properly in the device tree and then calls usb_new_device()
+ * to register the usb device.  It also assigns the root hub's USB address
+ * (always 1).
  */
-static int register_root_hub (struct usb_device *usb_dev,
-                struct usb_hcd *hcd)
+static int register_root_hub(struct usb_hcd *hcd)
 {
         struct device *parent_dev = hcd->self.controller;
+        struct usb_device *usb_dev = hcd->self.root_hub;
         const int devnum = 1;
         int retval;
 
@@ -844,14 +862,12 @@ static int register_root_hub (struct usb_device *usb_dev,
         set_bit (devnum, usb_dev->bus->devmap.devicemap);
         usb_set_device_state(usb_dev, USB_STATE_ADDRESS);
 
-        down (&usb_bus_list_lock);
-        usb_dev->bus->root_hub = usb_dev;
+        mutex_lock(&usb_bus_list_lock);
 
         usb_dev->ep0.desc.wMaxPacketSize = __constant_cpu_to_le16(64);
         retval = usb_get_device_descriptor(usb_dev, USB_DT_DEVICE_SIZE);
         if (retval != sizeof usb_dev->descriptor) {
-                usb_dev->bus->root_hub = NULL;
-                up (&usb_bus_list_lock);
+                mutex_unlock(&usb_bus_list_lock);
                 dev_dbg (parent_dev, "can't read %s device descriptor %d\n",
                                 usb_dev->dev.bus_id, retval);
                 return (retval < 0) ? retval : -EMSGSIZE;
@@ -859,11 +875,10 @@ static int register_root_hub (struct usb_device *usb_dev,
 
         retval = usb_new_device (usb_dev);
         if (retval) {
-                usb_dev->bus->root_hub = NULL;
                 dev_err (parent_dev, "can't register root hub for %s, %d\n",
                                 usb_dev->dev.bus_id, retval);
         }
-        up (&usb_bus_list_lock);
+        mutex_unlock(&usb_bus_list_lock);
 
         if (retval == 0) {
                 spin_lock_irq (&hcd_root_hub_lock);
@@ -1090,7 +1105,6 @@ static void urb_unlink (struct urb *urb)
         spin_lock_irqsave (&hcd_data_lock, flags);
         list_del_init (&urb->urb_list);
         spin_unlock_irqrestore (&hcd_data_lock, flags);
-        usb_put_dev (urb->dev);
 }
 
 
@@ -1130,7 +1144,6 @@ static int hcd_submit_urb (struct urb *urb, gfp_t mem_flags)
         case HC_STATE_RUNNING:
         case HC_STATE_RESUMING:
 doit:
-                usb_get_dev (urb->dev);
                 list_add_tail (&urb->urb_list, &ep->urb_list);
                 status = 0;
                 break;
@@ -1771,12 +1784,10 @@ int usb_add_hcd(struct usb_hcd *hcd,
 
         set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
 
-        /* till now HC has been in an indeterminate state ... */
-        if (hcd->driver->reset && (retval = hcd->driver->reset(hcd)) < 0) {
-                dev_err(hcd->self.controller, "can't reset\n");
-                return retval;
-        }
-
+        /* HC is in reset state, but accessible.  Now do the one-time init,
+         * bottom up so that hcds can customize the root hubs before khubd
+         * starts talking to them.  (Note, bus id is assigned early too.)
+         */
         if ((retval = hcd_buffer_create(hcd)) != 0) {
                 dev_dbg(hcd->self.controller, "pool alloc failed\n");
                 return retval;
@@ -1785,6 +1796,36 @@ int usb_add_hcd(struct usb_hcd *hcd,
         if ((retval = usb_register_bus(&hcd->self)) < 0)
                 goto err_register_bus;
 
+        if ((rhdev = usb_alloc_dev(NULL, &hcd->self, 0)) == NULL) {
+                dev_err(hcd->self.controller, "unable to allocate root hub\n");
+                retval = -ENOMEM;
+                goto err_allocate_root_hub;
+        }
+        rhdev->speed = (hcd->driver->flags & HCD_USB2) ? USB_SPEED_HIGH :
+                        USB_SPEED_FULL;
+        hcd->self.root_hub = rhdev;
+
+        /* "reset" is misnamed; its role is now one-time init. the controller
+         * should already have been reset (and boot firmware kicked off etc).
+         */
+        if (hcd->driver->reset && (retval = hcd->driver->reset(hcd)) < 0) {
+                dev_err(hcd->self.controller, "can't setup\n");
+                goto err_hcd_driver_setup;
+        }
+
+        /* wakeup flag init is in transition; for now we can't rely on PCI to
+         * initialize these bits properly, so we let reset() override it.
+         * This init should _precede_ the reset() once PCI behaves.
+         */
+        device_init_wakeup(&rhdev->dev,
+                        device_can_wakeup(hcd->self.controller));
+
+        /* NOTE: root hub and controller capabilities may not be the same */
+        if (device_can_wakeup(hcd->self.controller)
+                        && device_can_wakeup(&hcd->self.root_hub->dev))
+                dev_dbg(hcd->self.controller, "supports USB remote wakeup\n");
+
+        /* enable irqs just before we start the controller */
         if (hcd->driver->irq) {
                 char    buf[8], *bufp = buf;
 
@@ -1816,56 +1857,32 @@ int usb_add_hcd(struct usb_hcd *hcd,
                                         (unsigned long long)hcd->rsrc_start);
         }
 
-        /* Allocate the root hub before calling hcd->driver->start(),
-         * but don't register it until afterward so that the hardware
-         * is running.
-         */
-        if ((rhdev = usb_alloc_dev(NULL, &hcd->self, 0)) == NULL) {
-                dev_err(hcd->self.controller, "unable to allocate root hub\n");
-                retval = -ENOMEM;
-                goto err_allocate_root_hub;
-        }
-
-        /* Although in principle hcd->driver->start() might need to use rhdev,
-         * none of the current drivers do.
-         */
         if ((retval = hcd->driver->start(hcd)) < 0) {
                 dev_err(hcd->self.controller, "startup error %d\n", retval);
                 goto err_hcd_driver_start;
         }
 
-        /* hcd->driver->start() reported can_wakeup, probably with
-         * assistance from board's boot firmware.
-         * NOTE:  normal devices won't enable wakeup by default.
-         */
-        if (hcd->can_wakeup)
-                dev_dbg(hcd->self.controller, "supports USB remote wakeup\n");
-        hcd->remote_wakeup = hcd->can_wakeup;
-
-        rhdev->speed = (hcd->driver->flags & HCD_USB2) ? USB_SPEED_HIGH :
-                        USB_SPEED_FULL;
+        /* starting here, usbcore will pay attention to this root hub */
         rhdev->bus_mA = min(500u, hcd->power_budget);
-        if ((retval = register_root_hub(rhdev, hcd)) != 0)
+        if ((retval = register_root_hub(hcd)) != 0)
                 goto err_register_root_hub;
 
         if (hcd->uses_new_polling && hcd->poll_rh)
                 usb_hcd_poll_rh_status(hcd);
         return retval;
 
- err_register_root_hub:
+err_register_root_hub:
         hcd->driver->stop(hcd);
-
- err_hcd_driver_start:
-        usb_put_dev(rhdev);
-
- err_allocate_root_hub:
+err_hcd_driver_start:
         if (hcd->irq >= 0)
                 free_irq(irqnum, hcd);
-
- err_request_irq:
+err_request_irq:
+err_hcd_driver_setup:
+        hcd->self.root_hub = NULL;
+        usb_put_dev(rhdev);
+err_allocate_root_hub:
         usb_deregister_bus(&hcd->self);
-
- err_register_bus:
+err_register_bus:
         hcd_buffer_destroy(hcd);
         return retval;
 } 
@@ -1891,9 +1908,9 @@ void usb_remove_hcd(struct usb_hcd *hcd)
         hcd->rh_registered = 0;
         spin_unlock_irq (&hcd_root_hub_lock);
 
-        down(&usb_bus_list_lock);
+        mutex_lock(&usb_bus_list_lock);
         usb_disconnect(&hcd->self.root_hub);
-        up(&usb_bus_list_lock);
+        mutex_unlock(&usb_bus_list_lock);
 
         hcd->poll_rh = 0;
         del_timer_sync(&hcd->rh_timer);
diff --git a/drivers/usb/core/hcd.h b/drivers/usb/core/hcd.h
index 591b5aad1a18..7022aafb2ae8 100644
--- a/drivers/usb/core/hcd.h
+++ b/drivers/usb/core/hcd.h
@@ -78,8 +78,6 @@ struct usb_hcd {	/* usb_bus.hcpriv points to this */
 #define HCD_FLAG_HW_ACCESSIBLE  0x00000001
 #define HCD_FLAG_SAW_IRQ        0x00000002
 
-        unsigned                can_wakeup:1;   /* hw supports wakeup? */
-        unsigned                remote_wakeup:1;/* sw should use wakeup? */
         unsigned                rh_registered:1;/* is root hub registered? */
 
         /* The next flag is a stopgap, to be removed when all the HCDs
@@ -364,7 +362,7 @@ extern void usb_set_device_state(struct usb_device *udev,
 /* exported only within usbcore */
 
 extern struct list_head usb_bus_list;
-extern struct semaphore usb_bus_list_lock;
+extern struct mutex usb_bus_list_lock;
 extern wait_queue_head_t usb_kill_urb_queue;
 
 extern struct usb_bus *usb_bus_get (struct usb_bus *bus);
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 650d5ee5871b..8e65f7a237e4 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -22,6 +22,7 @@
 #include <linux/usb.h>
 #include <linux/usbdevice_fs.h>
 #include <linux/kthread.h>
+#include <linux/mutex.h>
 
 #include <asm/semaphore.h>
 #include <asm/uaccess.h>
@@ -1005,12 +1006,18 @@ void usb_set_device_state(struct usb_device *udev,
                 ;       /* do nothing */
         else if (new_state != USB_STATE_NOTATTACHED) {
                 udev->state = new_state;
-                if (new_state == USB_STATE_CONFIGURED)
-                        device_init_wakeup(&udev->dev,
-                                (udev->actconfig->desc.bmAttributes
-                                 & USB_CONFIG_ATT_WAKEUP));
-                else if (new_state != USB_STATE_SUSPENDED)
-                        device_init_wakeup(&udev->dev, 0);
+
+                /* root hub wakeup capabilities are managed out-of-band
+                 * and may involve silicon errata ... ignore them here.
+                 */
+                if (udev->parent) {
+                        if (new_state == USB_STATE_CONFIGURED)
+                                device_init_wakeup(&udev->dev,
+                                        (udev->actconfig->desc.bmAttributes
+                                         & USB_CONFIG_ATT_WAKEUP));
+                        else if (new_state != USB_STATE_SUSPENDED)
+                                device_init_wakeup(&udev->dev, 0);
+                }
         } else
                 recursively_mark_NOTATTACHED(udev);
         spin_unlock_irqrestore(&device_state_lock, flags);
@@ -1172,8 +1179,11 @@ static int choose_configuration(struct usb_device *udev)
         c = udev->config;
         num_configs = udev->descriptor.bNumConfigurations;
         for (i = 0; i < num_configs; (i++, c++)) {
-                struct usb_interface_descriptor *desc =
-                                &c->intf_cache[0]->altsetting->desc;
+                struct usb_interface_descriptor *desc = NULL;
+
+                /* It's possible that a config has no interfaces! */
+                if (c->desc.bNumInterfaces > 0)
+                        desc = &c->intf_cache[0]->altsetting->desc;
 
                 /*
                  * HP's USB bus-powered keyboard has only one configuration
@@ -1208,7 +1218,8 @@ static int choose_configuration(struct usb_device *udev)
                 /* If the first config's first interface is COMM/2/0xff
                  * (MSFT RNDIS), rule it out unless Linux has host-side
                  * RNDIS support. */
-                if (i == 0 && desc->bInterfaceClass == USB_CLASS_COMM
+                if (i == 0 && desc
+                                && desc->bInterfaceClass == USB_CLASS_COMM
                                 && desc->bInterfaceSubClass == 2
                                 && desc->bInterfaceProtocol == 0xff) {
 #ifndef CONFIG_USB_NET_RNDIS
@@ -1224,8 +1235,8 @@ static int choose_configuration(struct usb_device *udev)
                  * than a vendor-specific driver. */
                 else if (udev->descriptor.bDeviceClass !=
                                                 USB_CLASS_VENDOR_SPEC &&
-                                desc->bInterfaceClass !=
-                                                USB_CLASS_VENDOR_SPEC) {
+                                (!desc || desc->bInterfaceClass !=
+                                                USB_CLASS_VENDOR_SPEC)) {
                         best = c;
                         break;
                 }
@@ -1876,18 +1887,18 @@ int usb_resume_device(struct usb_device *udev)
         if (udev->state == USB_STATE_NOTATTACHED)
                 return -ENODEV;
 
-#ifdef  CONFIG_USB_SUSPEND
         /* selective resume of one downstream hub-to-device port */
         if (udev->parent) {
+#ifdef  CONFIG_USB_SUSPEND
                 if (udev->state == USB_STATE_SUSPENDED) {
                         // NOTE swsusp may bork us, device state being wrong...
                         // NOTE this fails if parent is also suspended...
                         status = hub_port_resume(hdev_to_hub(udev->parent),
                                         udev->portnum, udev);
                 } else
+#endif
                         status = 0;
         } else
-#endif
                 status = finish_device_resume(udev);
         if (status < 0)
                 dev_dbg(&udev->dev, "can't resume, status %d\n",
@@ -2162,7 +2173,7 @@ static int
 hub_port_init (struct usb_hub *hub, struct usb_device *udev, int port1,
                 int retry_counter)
 {
-        static DECLARE_MUTEX(usb_address0_sem);
+        static DEFINE_MUTEX(usb_address0_mutex);
 
         struct usb_device       *hdev = hub->hdev;
         int                     i, j, retval;
@@ -2183,7 +2194,7 @@ hub_port_init (struct usb_hub *hub, struct usb_device *udev, int port1,
         if (oldspeed == USB_SPEED_LOW)
                 delay = HUB_LONG_RESET_TIME;
 
-        down(&usb_address0_sem);
+        mutex_lock(&usb_address0_mutex);
 
         /* Reset the device; full speed may morph to high speed */
         retval = hub_port_reset(hub, port1, udev, delay);
@@ -2381,7 +2392,7 @@ hub_port_init (struct usb_hub *hub, struct usb_device *udev, int port1,
 fail:
         if (retval)
                 hub_port_disable(hub, port1, 0);
-        up(&usb_address0_sem);
+        mutex_unlock(&usb_address0_mutex);
         return retval;
 }
 
@@ -3017,7 +3028,7 @@ int usb_reset_device(struct usb_device *udev)
         parent_hub = hdev_to_hub(parent_hdev);
 
         /* If we're resetting an active hub, take some special actions */
-        if (udev->actconfig &&
+        if (udev->actconfig && udev->actconfig->desc.bNumInterfaces > 0 &&
                         udev->actconfig->interface[0]->dev.driver ==
                                 &hub_driver.driver &&
                         (hub = hdev_to_hub(udev)) != NULL) {
diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c
index 7135e542679d..08fb20f06f3e 100644
--- a/drivers/usb/core/message.c
+++ b/drivers/usb/core/message.c
@@ -631,8 +631,8 @@ int usb_get_descriptor(struct usb_device *dev, unsigned char type, unsigned char
  * Returns the number of bytes received on success, or else the status code
  * returned by the underlying usb_control_msg() call.
  */
-int usb_get_string(struct usb_device *dev, unsigned short langid,
-                unsigned char index, void *buf, int size)
+static int usb_get_string(struct usb_device *dev, unsigned short langid,
+                          unsigned char index, void *buf, int size)
 {
         int i;
         int result;
@@ -1388,11 +1388,13 @@ free_interfaces:
         if (dev->state != USB_STATE_ADDRESS)
                 usb_disable_device (dev, 1);    // Skip ep0
 
-        i = dev->bus_mA - cp->desc.bMaxPower * 2;
-        if (i < 0)
-                dev_warn(&dev->dev, "new config #%d exceeds power "
-                                "limit by %dmA\n",
-                                configuration, -i);
+        if (cp) {
+                i = dev->bus_mA - cp->desc.bMaxPower * 2;
+                if (i < 0)
+                        dev_warn(&dev->dev, "new config #%d exceeds power "
+                                        "limit by %dmA\n",
+                                        configuration, -i);
+        }
 
         if ((ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
                         USB_REQ_SET_CONFIGURATION, 0, configuration, 0,
@@ -1488,7 +1490,6 @@ EXPORT_SYMBOL(usb_sg_wait);
 // synchronous control message convenience routines
 EXPORT_SYMBOL(usb_get_descriptor);
 EXPORT_SYMBOL(usb_get_status);
-EXPORT_SYMBOL(usb_get_string);
 EXPORT_SYMBOL(usb_string);
 
 // synchronous calls that also maintain usbcore state
diff --git a/drivers/usb/core/notify.c b/drivers/usb/core/notify.c
index fbbebab52fbd..4b55285de9a0 100644
--- a/drivers/usb/core/notify.c
+++ b/drivers/usb/core/notify.c
@@ -13,16 +13,17 @@
 #include <linux/kernel.h>
 #include <linux/notifier.h>
 #include <linux/usb.h>
+#include <linux/mutex.h>
 #include "usb.h"
 
 
 static struct notifier_block *usb_notifier_list;
-static DECLARE_MUTEX(usb_notifier_lock);
+static DEFINE_MUTEX(usb_notifier_lock);
 
 static void usb_notifier_chain_register(struct notifier_block **list,
                                         struct notifier_block *n)
 {
-        down(&usb_notifier_lock);
+        mutex_lock(&usb_notifier_lock);
         while (*list) {
                 if (n->priority > (*list)->priority)
                         break;
@@ -30,13 +31,13 @@ static void usb_notifier_chain_register(struct notifier_block **list,
         }
         n->next = *list;
         *list = n;
-        up(&usb_notifier_lock);
+        mutex_unlock(&usb_notifier_lock);
 }
 
 static void usb_notifier_chain_unregister(struct notifier_block **nl,
                                    struct notifier_block *n)
 {
-        down(&usb_notifier_lock);
+        mutex_lock(&usb_notifier_lock);
         while ((*nl)!=NULL) {
                 if ((*nl)==n) {
                         *nl = n->next;
@@ -45,7 +46,7 @@ static void usb_notifier_chain_unregister(struct notifier_block **nl,
                 nl=&((*nl)->next);
         }
 exit:
-        up(&usb_notifier_lock);
+        mutex_unlock(&usb_notifier_lock);
 }
 
 static int usb_notifier_call_chain(struct notifier_block **n,
@@ -54,7 +55,7 @@ static int usb_notifier_call_chain(struct notifier_block **n,
         int ret=NOTIFY_DONE;
         struct notifier_block *nb = *n;
 
-        down(&usb_notifier_lock);
+        mutex_lock(&usb_notifier_lock);
         while (nb) {
                 ret = nb->notifier_call(nb,val,v);
                 if (ret&NOTIFY_STOP_MASK) {
@@ -63,7 +64,7 @@ static int usb_notifier_call_chain(struct notifier_block **n,
                 nb = nb->next;
         }
 exit:
-        up(&usb_notifier_lock);
+        mutex_unlock(&usb_notifier_lock);
         return ret;
 }
 
diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c
index 13d1d367f7f1..d7352aa73b5e 100644
--- a/drivers/usb/core/usb.c
+++ b/drivers/usb/core/usb.c
@@ -33,6 +33,7 @@
 #include <linux/errno.h>
 #include <linux/smp_lock.h>
 #include <linux/usb.h>
+#include <linux/mutex.h>
 
 #include <asm/io.h>
 #include <asm/scatterlist.h>
@@ -639,7 +640,7 @@ struct usb_device *usb_find_device(u16 vendor_id, u16 product_id)
         struct usb_bus *bus;
         struct usb_device *dev = NULL;
         
-        down(&usb_bus_list_lock);
+        mutex_lock(&usb_bus_list_lock);
         for (buslist = usb_bus_list.next;
              buslist != &usb_bus_list; 
              buslist = buslist->next) {
@@ -653,7 +654,7 @@ struct usb_device *usb_find_device(u16 vendor_id, u16 product_id)
                         goto exit;
         }
 exit:
-        up(&usb_bus_list_lock);
+        mutex_unlock(&usb_bus_list_lock);
         return dev;
 }
 
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index ff075a53c8d6..d80f71877d68 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -187,6 +187,23 @@ config USB_OTG
 
            Select this only if your OMAP board has a Mini-AB connector.
 
+config USB_GADGET_AT91
+        boolean "AT91 USB Device Port"
+        depends on ARCH_AT91RM9200
+        select USB_GADGET_SELECTED
+        help
+           Many Atmel AT91 processors (such as the AT91RM2000) have a
+           full speed USB Device Port with support for five configurable
+           endpoints (plus endpoint zero).
+
+           Say "y" to link the driver statically, or "m" to build a
+           dynamically linked module called "at91_udc" and force all
+           gadget drivers to also be dynamically linked.
+
+config USB_AT91
+        tristate
+        depends on USB_GADGET_AT91
+        default USB_GADGET
 
 config USB_GADGET_DUMMY_HCD
         boolean "Dummy HCD (DEVELOPMENT)"
diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile
index d5fd04d886e6..5a28e61392ec 100644
--- a/drivers/usb/gadget/Makefile
+++ b/drivers/usb/gadget/Makefile
@@ -7,6 +7,7 @@ obj-$(CONFIG_USB_PXA2XX)	+= pxa2xx_udc.o
 obj-$(CONFIG_USB_GOKU)          += goku_udc.o
 obj-$(CONFIG_USB_OMAP)          += omap_udc.o
 obj-$(CONFIG_USB_LH7A40X)       += lh7a40x_udc.o
+obj-$(CONFIG_USB_AT91)          += at91_udc.o
 
 #
 # USB gadget drivers
diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c
new file mode 100644
index 000000000000..865858cfd1c2
--- /dev/null
+++ b/drivers/usb/gadget/at91_udc.c
@@ -0,0 +1,1773 @@
+/*
+ * at91_udc -- driver for at91-series USB peripheral controller
+ *
+ * Copyright (C) 2004 by Thomas Rathbone
+ * Copyright (C) 2005 by HP Labs
+ * Copyright (C) 2005 by David Brownell
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA  02111-1307, USA.
+ */
+
+#undef  DEBUG
+#undef  VERBOSE
+#undef  PACKET_TRACE
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/delay.h>
+#include <linux/ioport.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/smp_lock.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/list.h>
+#include <linux/interrupt.h>
+#include <linux/proc_fs.h>
+#include <linux/clk.h>
+#include <linux/usb_ch9.h>
+#include <linux/usb_gadget.h>
+
+#include <asm/byteorder.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/system.h>
+#include <asm/mach-types.h>
+
+#include <asm/arch/hardware.h>
+#include <asm/arch/gpio.h>
+#include <asm/arch/board.h>
+
+#include "at91_udc.h"
+
+
+/*
+ * This controller is simple and PIO-only.  It's used in many AT91-series
+ * ARMv4T controllers, including the at91rm9200 (arm920T, with MMU),
+ * at91sam9261 (arm926ejs, with MMU), and several no-mmu versions.
+ *
+ * This driver expects the board has been wired with two GPIOs suppporting
+ * a VBUS sensing IRQ, and a D+ pullup.  (They may be omitted, but the
+ * testing hasn't covered such cases.)  The pullup is most important; it
+ * provides software control over whether the host enumerates the device.
+ * The VBUS sensing helps during enumeration, and allows both USB clocks
+ * (and the transceiver) to stay gated off until they're necessary, saving
+ * power.  During USB suspend, the 48 MHz clock is gated off.
+ */
+
+#define DRIVER_VERSION  "8 March 2005"
+
+static const char driver_name [] = "at91_udc";
+static const char ep0name[] = "ep0";
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * Read from a UDP register.
+ */
+static inline unsigned long at91_udp_read(unsigned int reg)
+{
+        void __iomem *udp_base = (void __iomem *)AT91_VA_BASE_UDP;
+
+        return __raw_readl(udp_base + reg);
+}
+
+/*
+ * Write to a UDP register.
+ */
+static inline void at91_udp_write(unsigned int reg, unsigned long value)
+{
+        void __iomem *udp_base = (void __iomem *)AT91_VA_BASE_UDP;
+
+        __raw_writel(value, udp_base + reg);
+}
+
+/*-------------------------------------------------------------------------*/
+
+#ifdef CONFIG_USB_GADGET_DEBUG_FILES
+
+#include <linux/seq_file.h>
+
+static const char debug_filename[] = "driver/udc";
+
+#define FOURBITS "%s%s%s%s"
+#define EIGHTBITS FOURBITS FOURBITS
+
+static void proc_ep_show(struct seq_file *s, struct at91_ep *ep)
+{
+        static char             *types[] = {
+                "control", "out-iso", "out-bulk", "out-int",
+                "BOGUS",   "in-iso",  "in-bulk",  "in-int"};
+
+        u32                     csr;
+        struct at91_request     *req;
+        unsigned long   flags;
+
+        local_irq_save(flags);
+
+        csr = __raw_readl(ep->creg);
+
+        /* NOTE:  not collecting per-endpoint irq statistics... */
+
+        seq_printf(s, "\n");
+        seq_printf(s, "%s, maxpacket %d %s%s %s%s\n",
+                        ep->ep.name, ep->ep.maxpacket,
+                        ep->is_in ? "in" : "out",
+                        ep->is_iso ? " iso" : "",
+                        ep->is_pingpong
+                                ? (ep->fifo_bank ? "pong" : "ping")
+                                : "",
+                        ep->stopped ? " stopped" : "");
+        seq_printf(s, "csr %08x rxbytes=%d %s %s %s" EIGHTBITS "\n",
+                csr,
+                (csr & 0x07ff0000) >> 16,
+                (csr & (1 << 15)) ? "enabled" : "disabled",
+                (csr & (1 << 11)) ? "DATA1" : "DATA0",
+                types[(csr & 0x700) >> 8],
+
+                /* iff type is control then print current direction */
+                (!(csr & 0x700))
+                        ? ((csr & (1 << 7)) ? " IN" : " OUT")
+                        : "",
+                (csr & (1 << 6)) ? " rxdatabk1" : "",
+                (csr & (1 << 5)) ? " forcestall" : "",
+                (csr & (1 << 4)) ? " txpktrdy" : "",
+
+                (csr & (1 << 3)) ? " stallsent" : "",
+                (csr & (1 << 2)) ? " rxsetup" : "",
+                (csr & (1 << 1)) ? " rxdatabk0" : "",
+                (csr & (1 << 0)) ? " txcomp" : "");
+        if (list_empty (&ep->queue))
+                seq_printf(s, "\t(queue empty)\n");
+
+        else list_for_each_entry (req, &ep->queue, queue) {
+                unsigned        length = req->req.actual;
+
+                seq_printf(s, "\treq %p len %d/%d buf %p\n",
+                                &req->req, length,
+                                req->req.length, req->req.buf);
+        }
+        local_irq_restore(flags);
+}
+
+static void proc_irq_show(struct seq_file *s, const char *label, u32 mask)
+{
+        int i;
+
+        seq_printf(s, "%s %04x:%s%s" FOURBITS, label, mask,
+                (mask & (1 << 13)) ? " wakeup" : "",
+                (mask & (1 << 12)) ? " endbusres" : "",
+
+                (mask & (1 << 11)) ? " sofint" : "",
+                (mask & (1 << 10)) ? " extrsm" : "",
+                (mask & (1 << 9)) ? " rxrsm" : "",
+                (mask & (1 << 8)) ? " rxsusp" : "");
+        for (i = 0; i < 8; i++) {
+                if (mask & (1 << i))
+                        seq_printf(s, " ep%d", i);
+        }
+        seq_printf(s, "\n");
+}
+
+static int proc_udc_show(struct seq_file *s, void *unused)
+{
+        struct at91_udc *udc = s->private;
+        struct at91_ep  *ep;
+        u32             tmp;
+
+        seq_printf(s, "%s: version %s\n", driver_name, DRIVER_VERSION);
+
+        seq_printf(s, "vbus %s, pullup %s, %s powered%s, gadget %s\n\n",
+                udc->vbus ? "present" : "off",
+                udc->enabled
+                        ? (udc->vbus ? "active" : "enabled")
+                        : "disabled",
+                udc->selfpowered ? "self" : "VBUS",
+                udc->suspended ? ", suspended" : "",
+                udc->driver ? udc->driver->driver.name : "(none)");
+
+        /* don't access registers when interface isn't clocked */
+        if (!udc->clocked) {
+                seq_printf(s, "(not clocked)\n");
+                return 0;
+        }
+
+        tmp = at91_udp_read(AT91_UDP_FRM_NUM);
+        seq_printf(s, "frame %05x:%s%s frame=%d\n", tmp,
+                (tmp & AT91_UDP_FRM_OK) ? " ok" : "",
+                (tmp & AT91_UDP_FRM_ERR) ? " err" : "",
+                (tmp & AT91_UDP_NUM));
+
+        tmp = at91_udp_read(AT91_UDP_GLB_STAT);
+        seq_printf(s, "glbstate %02x:%s" FOURBITS "\n", tmp,
+                (tmp & AT91_UDP_RMWUPE) ? " rmwupe" : "",
+                (tmp & AT91_UDP_RSMINPR) ? " rsminpr" : "",
+                (tmp & AT91_UDP_ESR) ? " esr" : "",
+                (tmp & AT91_UDP_CONFG) ? " confg" : "",
+                (tmp & AT91_UDP_FADDEN) ? " fadden" : "");
+
+        tmp = at91_udp_read(AT91_UDP_FADDR);
+        seq_printf(s, "faddr   %03x:%s fadd=%d\n", tmp,
+                (tmp & AT91_UDP_FEN) ? " fen" : "",
+                (tmp & AT91_UDP_FADD));
+
+        proc_irq_show(s, "imr   ", at91_udp_read(AT91_UDP_IMR));
+        proc_irq_show(s, "isr   ", at91_udp_read(AT91_UDP_ISR));
+
+        if (udc->enabled && udc->vbus) {
+                proc_ep_show(s, &udc->ep[0]);
+                list_for_each_entry (ep, &udc->gadget.ep_list, ep.ep_list) {
+                        if (ep->desc)
+                                proc_ep_show(s, ep);
+                }
+        }
+        return 0;
+}
+
+static int proc_udc_open(struct inode *inode, struct file *file)
+{
+        return single_open(file, proc_udc_show, PDE(inode)->data);
+}
+
+static struct file_operations proc_ops = {
+        .open           = proc_udc_open,
+        .read           = seq_read,
+        .llseek         = seq_lseek,
+        .release        = single_release,
+};
+
+static void create_debug_file(struct at91_udc *udc)
+{
+        struct proc_dir_entry *pde;
+
+        pde = create_proc_entry (debug_filename, 0, NULL);
+        udc->pde = pde;
+        if (pde == NULL)
+                return;
+
+        pde->proc_fops = &proc_ops;
+        pde->data = udc;
+}
+
+static void remove_debug_file(struct at91_udc *udc)
+{
+        if (udc->pde)
+                remove_proc_entry(debug_filename, NULL);
+}
+
+#else
+
+static inline void create_debug_file(struct at91_udc *udc) {}
+static inline void remove_debug_file(struct at91_udc *udc) {}
+
+#endif
+
+
+/*-------------------------------------------------------------------------*/
+
+static void done(struct at91_ep *ep, struct at91_request *req, int status)
+{
+        unsigned        stopped = ep->stopped;
+
+        list_del_init(&req->queue);
+        if (req->req.status == -EINPROGRESS)
+                req->req.status = status;
+        else
+                status = req->req.status;
+        if (status && status != -ESHUTDOWN)
+                VDBG("%s done %p, status %d\n", ep->ep.name, req, status);
+
+        ep->stopped = 1;
+        req->req.complete(&ep->ep, &req->req);
+        ep->stopped = stopped;
+
+        /* ep0 is always ready; other endpoints need a non-empty queue */
+        if (list_empty(&ep->queue) && ep->int_mask != (1 << 0))
+                at91_udp_write(AT91_UDP_IDR, ep->int_mask);
+}
+
+/*-------------------------------------------------------------------------*/
+
+/* bits indicating OUT fifo has data ready */
+#define RX_DATA_READY   (AT91_UDP_RX_DATA_BK0 | AT91_UDP_RX_DATA_BK1)
+
+/*
+ * Endpoint FIFO CSR bits have a mix of bits, making it unsafe to just write
+ * back most of the value you just read (because of side effects, including
+ * bits that may change after reading and before writing).
+ *
+ * Except when changing a specific bit, always write values which:
+ *  - clear SET_FX bits (setting them could change something)
+ *  - set CLR_FX bits (clearing them could change something)
+ *
+ * There are also state bits like FORCESTALL, EPEDS, DIR, and EPTYPE
+ * that shouldn't normally be changed.
+ */
+#define SET_FX  (AT91_UDP_TXPKTRDY)
+#define CLR_FX  (RX_DATA_READY | AT91_UDP_RXSETUP | AT91_UDP_STALLSENT | AT91_UDP_TXCOMP)
+
+/* pull OUT packet data from the endpoint's fifo */
+static int read_fifo (struct at91_ep *ep, struct at91_request *req)
+{
+        u32 __iomem     *creg = ep->creg;
+        u8 __iomem      *dreg = ep->creg + (AT91_UDP_FDR(0) - AT91_UDP_CSR(0));
+        u32             csr;
+        u8              *buf;
+        unsigned int    count, bufferspace, is_done;
+
+        buf = req->req.buf + req->req.actual;
+        bufferspace = req->req.length - req->req.actual;
+
+        /*
+         * there might be nothing to read if ep_queue() calls us,
+         * or if we already emptied both pingpong buffers
+         */
+rescan:
+        csr = __raw_readl(creg);
+        if ((csr & RX_DATA_READY) == 0)
+                return 0;
+
+        count = (csr & AT91_UDP_RXBYTECNT) >> 16;
+        if (count > ep->ep.maxpacket)
+                count = ep->ep.maxpacket;
+        if (count > bufferspace) {
+                DBG("%s buffer overflow\n", ep->ep.name);
+                req->req.status = -EOVERFLOW;
+                count = bufferspace;
+        }
+        __raw_readsb(dreg, buf, count);
+
+        /* release and swap pingpong mem bank */
+        csr |= CLR_FX;
+        if (ep->is_pingpong) {
+                if (ep->fifo_bank == 0) {
+                        csr &= ~(SET_FX | AT91_UDP_RX_DATA_BK0);
+                        ep->fifo_bank = 1;
+                } else {
+                        csr &= ~(SET_FX | AT91_UDP_RX_DATA_BK1);
+                        ep->fifo_bank = 0;
+                }
+        } else
+                csr &= ~(SET_FX | AT91_UDP_RX_DATA_BK0);
+        __raw_writel(csr, creg);
+
+        req->req.actual += count;
+        is_done = (count < ep->ep.maxpacket);
+        if (count == bufferspace)
+                is_done = 1;
+
+        PACKET("%s %p out/%d%s\n", ep->ep.name, &req->req, count,
+                        is_done ? " (done)" : "");
+
+        /*
+         * avoid extra trips through IRQ logic for packets already in
+         * the fifo ... maybe preventing an extra (expensive) OUT-NAK
+         */
+        if (is_done)
+                done(ep, req, 0);
+        else if (ep->is_pingpong) {
+                bufferspace -= count;
+                buf += count;
+                goto rescan;
+        }
+
+        return is_done;
+}
+
+/* load fifo for an IN packet */
+static int write_fifo(struct at91_ep *ep, struct at91_request *req)
+{
+        u32 __iomem     *creg = ep->creg;
+        u32             csr = __raw_readl(creg);
+        u8 __iomem      *dreg = ep->creg + (AT91_UDP_FDR(0) - AT91_UDP_CSR(0));
+        unsigned        total, count, is_last;
+
+        /*
+         * TODO: allow for writing two packets to the fifo ... that'll
+         * reduce the amount of IN-NAKing, but probably won't affect
+         * throughput much.  (Unlike preventing OUT-NAKing!)
+         */
+
+        /*
+         * If ep_queue() calls us, the queue is empty and possibly in
+         * odd states like TXCOMP not yet cleared (we do it, saving at
+         * least one IRQ) or the fifo not yet being free.  Those aren't
+         * issues normally (IRQ handler fast path).
+         */
+        if (unlikely(csr & (AT91_UDP_TXCOMP | AT91_UDP_TXPKTRDY))) {
+                if (csr & AT91_UDP_TXCOMP) {
+                        csr |= CLR_FX;
+                        csr &= ~(SET_FX | AT91_UDP_TXCOMP);
+                        __raw_writel(csr, creg);
+                        csr = __raw_readl(creg);
+                }
+                if (csr & AT91_UDP_TXPKTRDY)
+                        return 0;
+        }
+
+        total = req->req.length - req->req.actual;
+        if (ep->ep.maxpacket < total) {
+                count = ep->ep.maxpacket;
+                is_last = 0;
+        } else {
+                count = total;
+                is_last = (count < ep->ep.maxpacket) || !req->req.zero;
+        }
+
+        /*
+         * Write the packet, maybe it's a ZLP.
+         *
+         * NOTE:  incrementing req->actual before we receive the ACK means
+         * gadget driver IN bytecounts can be wrong in fault cases.  That's
+         * fixable with PIO drivers like this one (save "count" here, and
+         * do the increment later on TX irq), but not for most DMA hardware.
+         *
+         * So all gadget drivers must accept that potential error.  Some
+         * hardware supports precise fifo status reporting, letting them
+         * recover when the actual bytecount matters (e.g. for USB Test
+         * and Measurement Class devices).
+         */
+        __raw_writesb(dreg, req->req.buf + req->req.actual, count);
+        csr &= ~SET_FX;
+        csr |= CLR_FX | AT91_UDP_TXPKTRDY;
+        __raw_writel(csr, creg);
+        req->req.actual += count;
+
+        PACKET("%s %p in/%d%s\n", ep->ep.name, &req->req, count,
+                        is_last ? " (done)" : "");
+        if (is_last)
+                done(ep, req, 0);
+        return is_last;
+}
+
+static void nuke(struct at91_ep *ep, int status)
+{
+        struct at91_request *req;
+
+        // terminer chaque requete dans la queue
+        ep->stopped = 1;
+        if (list_empty(&ep->queue))
+                return;
+
+        VDBG("%s %s\n", __FUNCTION__, ep->ep.name);
+        while (!list_empty(&ep->queue)) {
+                req = list_entry(ep->queue.next, struct at91_request, queue);
+                done(ep, req, status);
+        }
+}
+
+/*-------------------------------------------------------------------------*/
+
+static int at91_ep_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
+{
+        struct at91_ep  *ep = container_of(_ep, struct at91_ep, ep);
+        struct at91_udc *dev = ep->udc;
+        u16             maxpacket;
+        u32             tmp;
+        unsigned long   flags;
+
+        if (!_ep || !ep
+                        || !desc || ep->desc
+                        || _ep->name == ep0name
+                        || desc->bDescriptorType != USB_DT_ENDPOINT
+                        || (maxpacket = le16_to_cpu(desc->wMaxPacketSize)) == 0
+                        || maxpacket > ep->maxpacket) {
+                DBG("bad ep or descriptor\n");
+                return -EINVAL;
+        }
+
+        if (!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN) {
+                DBG("bogus device state\n");
+                return -ESHUTDOWN;
+        }
+
+        tmp = desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK;
+        switch (tmp) {
+        case USB_ENDPOINT_XFER_CONTROL:
+                DBG("only one control endpoint\n");
+                return -EINVAL;
+        case USB_ENDPOINT_XFER_INT:
+                if (maxpacket > 64)
+                        goto bogus_max;
+                break;
+        case USB_ENDPOINT_XFER_BULK:
+                switch (maxpacket) {
+                case 8:
+                case 16:
+                case 32:
+                case 64:
+                        goto ok;
+                }
+bogus_max:
+                DBG("bogus maxpacket %d\n", maxpacket);
+                return -EINVAL;
+        case USB_ENDPOINT_XFER_ISOC:
+                if (!ep->is_pingpong) {
+                        DBG("iso requires double buffering\n");
+                        return -EINVAL;
+                }
+                break;
+        }
+
+ok:
+        local_irq_save(flags);
+
+        /* initialize endpoint to match this descriptor */
+        ep->is_in = (desc->bEndpointAddress & USB_DIR_IN) != 0;
+        ep->is_iso = (tmp == USB_ENDPOINT_XFER_ISOC);
+        ep->stopped = 0;
+        if (ep->is_in)
+                tmp |= 0x04;
+        tmp <<= 8;
+        tmp |= AT91_UDP_EPEDS;
+        __raw_writel(tmp, ep->creg);
+
+        ep->desc = desc;
+        ep->ep.maxpacket = maxpacket;
+
+        /*
+         * reset/init endpoint fifo.  NOTE:  leaves fifo_bank alone,
+         * since endpoint resets don't reset hw pingpong state.
+         */
+        at91_udp_write(AT91_UDP_RST_EP, ep->int_mask);
+        at91_udp_write(AT91_UDP_RST_EP, 0);
+
+        local_irq_restore(flags);
+        return 0;
+}
+
+static int at91_ep_disable (struct usb_ep * _ep)
+{
+        struct at91_ep  *ep = container_of(_ep, struct at91_ep, ep);
+        unsigned long   flags;
+
+        if (ep == &ep->udc->ep[0])
+                return -EINVAL;
+
+        local_irq_save(flags);
+
+        nuke(ep, -ESHUTDOWN);
+
+        /* restore the endpoint's pristine config */
+        ep->desc = NULL;
+        ep->ep.maxpacket = ep->maxpacket;
+
+        /* reset fifos and endpoint */
+        if (ep->udc->clocked) {
+                at91_udp_write(AT91_UDP_RST_EP, ep->int_mask);
+                at91_udp_write(AT91_UDP_RST_EP, 0);
+                __raw_writel(0, ep->creg);
+        }
+
+        local_irq_restore(flags);
+        return 0;
+}
+
+/*
+ * this is a PIO-only driver, so there's nothing
+ * interesting for request or buffer allocation.
+ */
+
+static struct usb_request *at91_ep_alloc_request (struct usb_ep *_ep, unsigned int gfp_flags)
+{
+        struct at91_request *req;
+
+        req = kcalloc(1, sizeof (struct at91_request), SLAB_KERNEL);
+        if (!req)
+                return NULL;
+
+        INIT_LIST_HEAD(&req->queue);
+        return &req->req;
+}
+
+static void at91_ep_free_request(struct usb_ep *_ep, struct usb_request *_req)
+{
+        struct at91_request *req;
+
+        req = container_of(_req, struct at91_request, req);
+        BUG_ON(!list_empty(&req->queue));
+        kfree(req);
+}
+
+static void *at91_ep_alloc_buffer(
+        struct usb_ep *_ep,
+        unsigned bytes,
+        dma_addr_t *dma,
+        gfp_t gfp_flags)
+{
+        *dma = ~0;
+        return kmalloc(bytes, gfp_flags);
+}
+
+static void at91_ep_free_buffer(
+        struct usb_ep *ep,
+        void *buf,
+        dma_addr_t dma,
+        unsigned bytes)
+{
+        kfree(buf);
+}
+
+static int at91_ep_queue(struct usb_ep *_ep,
+                        struct usb_request *_req, gfp_t gfp_flags)
+{
+        struct at91_request     *req;
+        struct at91_ep          *ep;
+        struct at91_udc         *dev;
+        int                     status;
+        unsigned long           flags;
+
+        req = container_of(_req, struct at91_request, req);
+        ep = container_of(_ep, struct at91_ep, ep);
+
+        if (!_req || !_req->complete
+                        || !_req->buf || !list_empty(&req->queue)) {
+                DBG("invalid request\n");
+                return -EINVAL;
+        }
+
+        if (!_ep || (!ep->desc && ep->ep.name != ep0name)) {
+                DBG("invalid ep\n");
+                return -EINVAL;
+        }
+
+        dev = ep->udc;
+
+        if (!dev || !dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN) {
+                DBG("invalid device\n");
+                return -EINVAL;
+        }
+
+        _req->status = -EINPROGRESS;
+        _req->actual = 0;
+
+        local_irq_save(flags);
+
+        /* try to kickstart any empty and idle queue */
+        if (list_empty(&ep->queue) && !ep->stopped) {
+                int     is_ep0;
+
+                /*
+                 * If this control request has a non-empty DATA stage, this
+                 * will start that stage.  It works just like a non-control
+                 * request (until the status stage starts, maybe early).
+                 *
+                 * If the data stage is empty, then this starts a successful
+                 * IN/STATUS stage.  (Unsuccessful ones use set_halt.)
+                 */
+                is_ep0 = (ep->ep.name == ep0name);
+                if (is_ep0) {
+                        u32     tmp;
+
+                        if (!dev->req_pending) {
+                                status = -EINVAL;
+                                goto done;
+                        }
+
+                        /*
+                         * defer changing CONFG until after the gadget driver
+                         * reconfigures the endpoints.
+                         */
+                        if (dev->wait_for_config_ack) {
+                                tmp = at91_udp_read(AT91_UDP_GLB_STAT);
+                                tmp ^= AT91_UDP_CONFG;
+                                VDBG("toggle config\n");
+                                at91_udp_write(AT91_UDP_GLB_STAT, tmp);
+                        }
+                        if (req->req.length == 0) {
+ep0_in_status:
+                                PACKET("ep0 in/status\n");
+                                status = 0;
+                                tmp = __raw_readl(ep->creg);
+                                tmp &= ~SET_FX;
+                                tmp |= CLR_FX | AT91_UDP_TXPKTRDY;
+                                __raw_writel(tmp, ep->creg);
+                                dev->req_pending = 0;
+                                goto done;
+                        }
+                }
+
+                if (ep->is_in)
+                        status = write_fifo(ep, req);
+                else {
+                        status = read_fifo(ep, req);
+
+                        /* IN/STATUS stage is otherwise triggered by irq */
+                        if (status && is_ep0)
+                                goto ep0_in_status;
+                }
+        } else
+                status = 0;
+
+        if (req && !status) {
+                list_add_tail (&req->queue, &ep->queue);
+                at91_udp_write(AT91_UDP_IER, ep->int_mask);
+        }
+done:
+        local_irq_restore(flags);
+        return (status < 0) ? status : 0;
+}
+
+static int at91_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req)
+{
+        struct at91_ep  *ep;
+        struct at91_request     *req;
+
+        ep = container_of(_ep, struct at91_ep, ep);
+        if (!_ep || ep->ep.name == ep0name)
+                return -EINVAL;
+
+        /* make sure it's actually queued on this endpoint */
+        list_for_each_entry (req, &ep->queue, queue) {
+                if (&req->req == _req)
+                        break;
+        }
+        if (&req->req != _req)
+                return -EINVAL;
+
+        done(ep, req, -ECONNRESET);
+        return 0;
+}
+
+static int at91_ep_set_halt(struct usb_ep *_ep, int value)
+{
+        struct at91_ep  *ep = container_of(_ep, struct at91_ep, ep);
+        u32 __iomem     *creg;
+        u32             csr;
+        unsigned long   flags;
+        int             status = 0;
+
+        if (!_ep || ep->is_iso || !ep->udc->clocked)
+                return -EINVAL;
+
+        creg = ep->creg;
+        local_irq_save(flags);
+
+        csr = __raw_readl(creg);
+
+        /*
+         * fail with still-busy IN endpoints, ensuring correct sequencing
+         * of data tx then stall.  note that the fifo rx bytecount isn't
+         * completely accurate as a tx bytecount.
+         */
+        if (ep->is_in && (!list_empty(&ep->queue) || (csr >> 16) != 0))
+                status = -EAGAIN;
+        else {
+                csr |= CLR_FX;
+                csr &= ~SET_FX;
+                if (value) {
+                        csr |= AT91_UDP_FORCESTALL;
+                        VDBG("halt %s\n", ep->ep.name);
+                } else {
+                        at91_udp_write(AT91_UDP_RST_EP, ep->int_mask);
+                        at91_udp_write(AT91_UDP_RST_EP, 0);
+                        csr &= ~AT91_UDP_FORCESTALL;
+                }
+                __raw_writel(csr, creg);
+        }
+
+        local_irq_restore(flags);
+        return status;
+}
+
+static struct usb_ep_ops at91_ep_ops = {
+        .enable         = at91_ep_enable,
+        .disable        = at91_ep_disable,
+        .alloc_request  = at91_ep_alloc_request,
+        .free_request   = at91_ep_free_request,
+        .alloc_buffer   = at91_ep_alloc_buffer,
+        .free_buffer    = at91_ep_free_buffer,
+        .queue          = at91_ep_queue,
+        .dequeue        = at91_ep_dequeue,
+        .set_halt       = at91_ep_set_halt,
+        // there's only imprecise fifo status reporting
+};
+
+/*-------------------------------------------------------------------------*/
+
+static int at91_get_frame(struct usb_gadget *gadget)
+{
+        if (!to_udc(gadget)->clocked)
+                return -EINVAL;
+        return at91_udp_read(AT91_UDP_FRM_NUM) & AT91_UDP_NUM;
+}
+
+static int at91_wakeup(struct usb_gadget *gadget)
+{
+        struct at91_udc *udc = to_udc(gadget);
+        u32             glbstate;
+        int             status = -EINVAL;
+        unsigned long   flags;
+
+        DBG("%s\n", __FUNCTION__ );
+        local_irq_save(flags);
+
+        if (!udc->clocked || !udc->suspended)
+                goto done;
+
+        /* NOTE:  some "early versions" handle ESR differently ... */
+
+        glbstate = at91_udp_read(AT91_UDP_GLB_STAT);
+        if (!(glbstate & AT91_UDP_ESR))
+                goto done;
+        glbstate |= AT91_UDP_ESR;
+        at91_udp_write(AT91_UDP_GLB_STAT, glbstate);
+
+done:
+        local_irq_restore(flags);
+        return status;
+}
+
+/* reinit == restore inital software state */
+static void udc_reinit(struct at91_udc *udc)
+{
+        u32 i;
+
+        INIT_LIST_HEAD(&udc->gadget.ep_list);
+        INIT_LIST_HEAD(&udc->gadget.ep0->ep_list);
+
+        for (i = 0; i < NUM_ENDPOINTS; i++) {
+                struct at91_ep *ep = &udc->ep[i];
+
+                if (i != 0)
+                        list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list);
+                ep->desc = NULL;
+                ep->stopped = 0;
+                ep->fifo_bank = 0;
+                ep->ep.maxpacket = ep->maxpacket;
+                // initialiser une queue par endpoint
+                INIT_LIST_HEAD(&ep->queue);
+        }
+}
+
+static void stop_activity(struct at91_udc *udc)
+{
+        struct usb_gadget_driver *driver = udc->driver;
+        int i;
+
+        if (udc->gadget.speed == USB_SPEED_UNKNOWN)
+                driver = NULL;
+        udc->gadget.speed = USB_SPEED_UNKNOWN;
+
+        for (i = 0; i < NUM_ENDPOINTS; i++) {
+                struct at91_ep *ep = &udc->ep[i];
+                ep->stopped = 1;
+                nuke(ep, -ESHUTDOWN);
+        }
+        if (driver)
+                driver->disconnect(&udc->gadget);
+
+        udc_reinit(udc);
+}
+
+static void clk_on(struct at91_udc *udc)
+{
+        if (udc->clocked)
+                return;
+        udc->clocked = 1;
+        clk_enable(udc->iclk);
+        clk_enable(udc->fclk);
+}
+
+static void clk_off(struct at91_udc *udc)
+{
+        if (!udc->clocked)
+                return;
+        udc->clocked = 0;
+        udc->gadget.speed = USB_SPEED_UNKNOWN;
+        clk_disable(udc->iclk);
+        clk_disable(udc->fclk);
+}
+
+/*
+ * activate/deactivate link with host; minimize power usage for
+ * inactive links by cutting clocks and transceiver power.
+ */
+static void pullup(struct at91_udc *udc, int is_on)
+{
+        if (!udc->enabled || !udc->vbus)
+                is_on = 0;
+        DBG("%sactive\n", is_on ? "" : "in");
+        if (is_on) {
+                clk_on(udc);
+                at91_udp_write(AT91_UDP_TXVC, 0);
+                at91_set_gpio_value(udc->board.pullup_pin, 1);
+        } else  {
+                stop_activity(udc);
+                at91_udp_write(AT91_UDP_TXVC, AT91_UDP_TXVC_TXVDIS);
+                at91_set_gpio_value(udc->board.pullup_pin, 0);
+                clk_off(udc);
+
+                // REVISIT:  with transceiver disabled, will D- float
+                // so that a host would falsely detect a device?
+        }
+}
+
+/* vbus is here!  turn everything on that's ready */
+static int at91_vbus_session(struct usb_gadget *gadget, int is_active)
+{
+        struct at91_udc *udc = to_udc(gadget);
+        unsigned long   flags;
+
+        // VDBG("vbus %s\n", is_active ? "on" : "off");
+        local_irq_save(flags);
+        udc->vbus = (is_active != 0);
+        pullup(udc, is_active);
+        local_irq_restore(flags);
+        return 0;
+}
+
+static int at91_pullup(struct usb_gadget *gadget, int is_on)
+{
+        struct at91_udc *udc = to_udc(gadget);
+        unsigned long   flags;
+
+        local_irq_save(flags);
+        udc->enabled = is_on = !!is_on;
+        pullup(udc, is_on);
+        local_irq_restore(flags);
+        return 0;
+}
+
+static int at91_set_selfpowered(struct usb_gadget *gadget, int is_on)
+{
+        struct at91_udc *udc = to_udc(gadget);
+        unsigned long   flags;
+
+        local_irq_save(flags);
+        udc->selfpowered = (is_on != 0);
+        local_irq_restore(flags);
+        return 0;
+}
+
+static const struct usb_gadget_ops at91_udc_ops = {
+        .get_frame              = at91_get_frame,
+        .wakeup                 = at91_wakeup,
+        .set_selfpowered        = at91_set_selfpowered,
+        .vbus_session           = at91_vbus_session,
+        .pullup                 = at91_pullup,
+
+        /*
+         * VBUS-powered devices may also also want to support bigger
+         * power budgets after an appropriate SET_CONFIGURATION.
+         */
+        // .vbus_power          = at91_vbus_power,
+};
+
+/*-------------------------------------------------------------------------*/
+
+static int handle_ep(struct at91_ep *ep)
+{
+        struct at91_request     *req;
+        u32 __iomem             *creg = ep->creg;
+        u32                     csr = __raw_readl(creg);
+
+        if (!list_empty(&ep->queue))
+                req = list_entry(ep->queue.next,
+                        struct at91_request, queue);
+        else
+                req = NULL;
+
+        if (ep->is_in) {
+                if (csr & (AT91_UDP_STALLSENT | AT91_UDP_TXCOMP)) {
+                        csr |= CLR_FX;
+                        csr &= ~(SET_FX | AT91_UDP_STALLSENT | AT91_UDP_TXCOMP);
+                        __raw_writel(csr, creg);
+                }
+                if (req)
+                        return write_fifo(ep, req);
+
+        } else {
+                if (csr & AT91_UDP_STALLSENT) {
+                        /* STALLSENT bit == ISOERR */
+                        if (ep->is_iso && req)
+                                req->req.status = -EILSEQ;
+                        csr |= CLR_FX;
+                        csr &= ~(SET_FX | AT91_UDP_STALLSENT);
+                        __raw_writel(csr, creg);
+                        csr = __raw_readl(creg);
+                }
+                if (req && (csr & RX_DATA_READY))
+                        return read_fifo(ep, req);
+        }
+        return 0;
+}
+
+union setup {
+        u8                      raw[8];
+        struct usb_ctrlrequest  r;
+};
+
+static void handle_setup(struct at91_udc *udc, struct at91_ep *ep, u32 csr)
+{
+        u32 __iomem     *creg = ep->creg;
+        u8 __iomem      *dreg = ep->creg + (AT91_UDP_FDR(0) - AT91_UDP_CSR(0));
+        unsigned        rxcount, i = 0;
+        u32             tmp;
+        union setup     pkt;
+        int             status = 0;
+
+        /* read and ack SETUP; hard-fail for bogus packets */
+        rxcount = (csr & AT91_UDP_RXBYTECNT) >> 16;
+        if (likely(rxcount == 8)) {
+                while (rxcount--)
+                        pkt.raw[i++] = __raw_readb(dreg);
+                if (pkt.r.bRequestType & USB_DIR_IN) {
+                        csr |= AT91_UDP_DIR;
+                        ep->is_in = 1;
+                } else {
+                        csr &= ~AT91_UDP_DIR;
+                        ep->is_in = 0;
+                }
+        } else {
+                // REVISIT this happens sometimes under load; why??
+                ERR("SETUP len %d, csr %08x\n", rxcount, csr);
+                status = -EINVAL;
+        }
+        csr |= CLR_FX;
+        csr &= ~(SET_FX | AT91_UDP_RXSETUP);
+        __raw_writel(csr, creg);
+        udc->wait_for_addr_ack = 0;
+        udc->wait_for_config_ack = 0;
+        ep->stopped = 0;
+        if (unlikely(status != 0))
+                goto stall;
+
+#define w_index         le16_to_cpu(pkt.r.wIndex)
+#define w_value         le16_to_cpu(pkt.r.wValue)
+#define w_length        le16_to_cpu(pkt.r.wLength)
+
+        VDBG("SETUP %02x.%02x v%04x i%04x l%04x\n",
+                        pkt.r.bRequestType, pkt.r.bRequest,
+                        w_value, w_index, w_length);
+
+        /*
+         * A few standard requests get handled here, ones that touch
+         * hardware ... notably for device and endpoint features.
+         */
+        udc->req_pending = 1;
+        csr = __raw_readl(creg);
+        csr |= CLR_FX;
+        csr &= ~SET_FX;
+        switch ((pkt.r.bRequestType << 8) | pkt.r.bRequest) {
+
+        case ((USB_TYPE_STANDARD|USB_RECIP_DEVICE) << 8)
+                        | USB_REQ_SET_ADDRESS:
+                __raw_writel(csr | AT91_UDP_TXPKTRDY, creg);
+                udc->addr = w_value;
+                udc->wait_for_addr_ack = 1;
+                udc->req_pending = 0;
+                /* FADDR is set later, when we ack host STATUS */
+                return;
+
+        case ((USB_TYPE_STANDARD|USB_RECIP_DEVICE) << 8)
+                        | USB_REQ_SET_CONFIGURATION:
+                tmp = at91_udp_read(AT91_UDP_GLB_STAT) & AT91_UDP_CONFG;
+                if (pkt.r.wValue)
+                        udc->wait_for_config_ack = (tmp == 0);
+                else
+                        udc->wait_for_config_ack = (tmp != 0);
+                if (udc->wait_for_config_ack)
+                        VDBG("wait for config\n");
+                /* CONFG is toggled later, if gadget driver succeeds */
+                break;
+
+        /*
+         * Hosts may set or clear remote wakeup status, and
+         * devices may report they're VBUS powered.
+         */
+        case ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_DEVICE) << 8)
+                        | USB_REQ_GET_STATUS:
+                tmp = (udc->selfpowered << USB_DEVICE_SELF_POWERED);
+                if (at91_udp_read(AT91_UDP_GLB_STAT) & AT91_UDP_ESR)
+                        tmp |= (1 << USB_DEVICE_REMOTE_WAKEUP);
+                PACKET("get device status\n");
+                __raw_writeb(tmp, dreg);
+                __raw_writeb(0, dreg);
+                goto write_in;
+                /* then STATUS starts later, automatically */
+        case ((USB_TYPE_STANDARD|USB_RECIP_DEVICE) << 8)
+                        | USB_REQ_SET_FEATURE:
+                if (w_value != USB_DEVICE_REMOTE_WAKEUP)
+                        goto stall;
+                tmp = at91_udp_read(AT91_UDP_GLB_STAT);
+                tmp |= AT91_UDP_ESR;
+                at91_udp_write(AT91_UDP_GLB_STAT, tmp);
+                goto succeed;
+        case ((USB_TYPE_STANDARD|USB_RECIP_DEVICE) << 8)
+                        | USB_REQ_CLEAR_FEATURE:
+                if (w_value != USB_DEVICE_REMOTE_WAKEUP)
+                        goto stall;
+                tmp = at91_udp_read(AT91_UDP_GLB_STAT);
+                tmp &= ~AT91_UDP_ESR;
+                at91_udp_write(AT91_UDP_GLB_STAT, tmp);
+                goto succeed;
+
+        /*
+         * Interfaces have no feature settings; this is pretty useless.
+         * we won't even insist the interface exists...
+         */
+        case ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_INTERFACE) << 8)
+                        | USB_REQ_GET_STATUS:
+                PACKET("get interface status\n");
+                __raw_writeb(0, dreg);
+                __raw_writeb(0, dreg);
+                goto write_in;
+                /* then STATUS starts later, automatically */
+        case ((USB_TYPE_STANDARD|USB_RECIP_INTERFACE) << 8)
+                        | USB_REQ_SET_FEATURE:
+        case ((USB_TYPE_STANDARD|USB_RECIP_INTERFACE) << 8)
+                        | USB_REQ_CLEAR_FEATURE:
+                goto stall;
+
+        /*
+         * Hosts may clear bulk/intr endpoint halt after the gadget
+         * driver sets it (not widely used); or set it (for testing)
+         */
+        case ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_ENDPOINT) << 8)
+                        | USB_REQ_GET_STATUS:
+                tmp = w_index & USB_ENDPOINT_NUMBER_MASK;
+                ep = &udc->ep[tmp];
+                if (tmp > NUM_ENDPOINTS || (tmp && !ep->desc))
+                        goto stall;
+
+                if (tmp) {
+                        if ((w_index & USB_DIR_IN)) {
+                                if (!ep->is_in)
+                                        goto stall;
+                        } else if (ep->is_in)
+                                goto stall;
+                }
+                PACKET("get %s status\n", ep->ep.name);
+                if (__raw_readl(ep->creg) & AT91_UDP_FORCESTALL)
+                        tmp = (1 << USB_ENDPOINT_HALT);
+                else
+                        tmp = 0;
+                __raw_writeb(tmp, dreg);
+                __raw_writeb(0, dreg);
+                goto write_in;
+                /* then STATUS starts later, automatically */
+        case ((USB_TYPE_STANDARD|USB_RECIP_ENDPOINT) << 8)
+                        | USB_REQ_SET_FEATURE:
+                tmp = w_index & USB_ENDPOINT_NUMBER_MASK;
+                ep = &udc->ep[tmp];
+                if (w_value != USB_ENDPOINT_HALT || tmp > NUM_ENDPOINTS)
+                        goto stall;
+                if (!ep->desc || ep->is_iso)
+                        goto stall;
+                if ((w_index & USB_DIR_IN)) {
+                        if (!ep->is_in)
+                                goto stall;
+                } else if (ep->is_in)
+                        goto stall;
+
+                tmp = __raw_readl(ep->creg);
+                tmp &= ~SET_FX;
+                tmp |= CLR_FX | AT91_UDP_FORCESTALL;
+                __raw_writel(tmp, ep->creg);
+                goto succeed;
+        case ((USB_TYPE_STANDARD|USB_RECIP_ENDPOINT) << 8)
+                        | USB_REQ_CLEAR_FEATURE:
+                tmp = w_index & USB_ENDPOINT_NUMBER_MASK;
+                ep = &udc->ep[tmp];
+                if (w_value != USB_ENDPOINT_HALT || tmp > NUM_ENDPOINTS)
+                        goto stall;
+                if (tmp == 0)
+                        goto succeed;
+                if (!ep->desc || ep->is_iso)
+                        goto stall;
+                if ((w_index & USB_DIR_IN)) {
+                        if (!ep->is_in)
+                                goto stall;
+                } else if (ep->is_in)
+                        goto stall;
+
+                at91_udp_write(AT91_UDP_RST_EP, ep->int_mask);
+                at91_udp_write(AT91_UDP_RST_EP, 0);
+                tmp = __raw_readl(ep->creg);
+                tmp |= CLR_FX;
+                tmp &= ~(SET_FX | AT91_UDP_FORCESTALL);
+                __raw_writel(tmp, ep->creg);
+                if (!list_empty(&ep->queue))
+                        handle_ep(ep);
+                goto succeed;
+        }
+
+#undef w_value
+#undef w_index
+#undef w_length
+
+        /* pass request up to the gadget driver */
+        status = udc->driver->setup(&udc->gadget, &pkt.r);
+        if (status < 0) {
+stall:
+                VDBG("req %02x.%02x protocol STALL; stat %d\n",
+                                pkt.r.bRequestType, pkt.r.bRequest, status);
+                csr |= AT91_UDP_FORCESTALL;
+                __raw_writel(csr, creg);
+                udc->req_pending = 0;
+        }
+        return;
+
+succeed:
+        /* immediate successful (IN) STATUS after zero length DATA */
+        PACKET("ep0 in/status\n");
+write_in:
+        csr |= AT91_UDP_TXPKTRDY;
+        __raw_writel(csr, creg);
+        udc->req_pending = 0;
+        return;
+}
+
+static void handle_ep0(struct at91_udc *udc)
+{
+        struct at91_ep          *ep0 = &udc->ep[0];
+        u32 __iomem             *creg = ep0->creg;
+        u32                     csr = __raw_readl(creg);
+        struct at91_request     *req;
+
+        if (unlikely(csr & AT91_UDP_STALLSENT)) {
+                nuke(ep0, -EPROTO);
+                udc->req_pending = 0;
+                csr |= CLR_FX;
+                csr &= ~(SET_FX | AT91_UDP_STALLSENT | AT91_UDP_FORCESTALL);
+                __raw_writel(csr, creg);
+                VDBG("ep0 stalled\n");
+                csr = __raw_readl(creg);
+        }
+        if (csr & AT91_UDP_RXSETUP) {
+                nuke(ep0, 0);
+                udc->req_pending = 0;
+                handle_setup(udc, ep0, csr);
+                return;
+        }
+
+        if (list_empty(&ep0->queue))
+                req = NULL;
+        else
+                req = list_entry(ep0->queue.next, struct at91_request, queue);
+
+        /* host ACKed an IN packet that we sent */
+        if (csr & AT91_UDP_TXCOMP) {
+                csr |= CLR_FX;
+                csr &= ~(SET_FX | AT91_UDP_TXCOMP);
+
+                /* write more IN DATA? */
+                if (req && ep0->is_in) {
+                        if (handle_ep(ep0))
+                                udc->req_pending = 0;
+
+                /*
+                 * Ack after:
+                 *  - last IN DATA packet (including GET_STATUS)
+                 *  - IN/STATUS for OUT DATA
+                 *  - IN/STATUS for any zero-length DATA stage
+                 * except for the IN DATA case, the host should send
+                 * an OUT status later, which we'll ack.
+                 */
+                } else {
+                        udc->req_pending = 0;
+                        __raw_writel(csr, creg);
+
+                        /*
+                         * SET_ADDRESS takes effect only after the STATUS
+                         * (to the original address) gets acked.
+                         */
+                        if (udc->wait_for_addr_ack) {
+                                u32     tmp;
+
+                                at91_udp_write(AT91_UDP_FADDR, AT91_UDP_FEN | udc->addr);
+                                tmp = at91_udp_read(AT91_UDP_GLB_STAT);
+                                tmp &= ~AT91_UDP_FADDEN;
+                                if (udc->addr)
+                                        tmp |= AT91_UDP_FADDEN;
+                                at91_udp_write(AT91_UDP_GLB_STAT, tmp);
+
+                                udc->wait_for_addr_ack = 0;
+                                VDBG("address %d\n", udc->addr);
+                        }
+                }
+        }
+
+        /* OUT packet arrived ... */
+        else if (csr & AT91_UDP_RX_DATA_BK0) {
+                csr |= CLR_FX;
+                csr &= ~(SET_FX | AT91_UDP_RX_DATA_BK0);
+
+                /* OUT DATA stage */
+                if (!ep0->is_in) {
+                        if (req) {
+                                if (handle_ep(ep0)) {
+                                        /* send IN/STATUS */
+                                        PACKET("ep0 in/status\n");
+                                        csr = __raw_readl(creg);
+                                        csr &= ~SET_FX;
+                                        csr |= CLR_FX | AT91_UDP_TXPKTRDY;
+                                        __raw_writel(csr, creg);
+                                        udc->req_pending = 0;
+                                }
+                        } else if (udc->req_pending) {
+                                /*
+                                 * AT91 hardware has a hard time with this
+                                 * "deferred response" mode for control-OUT
+                                 * transfers.  (For control-IN it's fine.)
+                                 *
+                                 * The normal solution leaves OUT data in the
+                                 * fifo until the gadget driver is ready.
+                                 * We couldn't do that here without disabling
+                                 * the IRQ that tells about SETUP packets,
+                                 * e.g. when the host gets impatient...
+                                 *
+                                 * Working around it by copying into a buffer
+                                 * would almost be a non-deferred response,
+                                 * except that it wouldn't permit reliable
+                                 * stalling of the request.  Instead, demand
+                                 * that gadget drivers not use this mode.
+                                 */
+                                DBG("no control-OUT deferred responses!\n");
+                                __raw_writel(csr | AT91_UDP_FORCESTALL, creg);
+                                udc->req_pending = 0;
+                        }
+
+                /* STATUS stage for control-IN; ack.  */
+                } else {
+                        PACKET("ep0 out/status ACK\n");
+                        __raw_writel(csr, creg);
+
+                        /* "early" status stage */
+                        if (req)
+                                done(ep0, req, 0);
+                }
+        }
+}
+
+static irqreturn_t at91_udc_irq (int irq, void *_udc, struct pt_regs *r)
+{
+        struct at91_udc         *udc = _udc;
+        u32                     rescans = 5;
+
+        while (rescans--) {
+                u32     status = at91_udp_read(AT91_UDP_ISR);
+
+                status &= at91_udp_read(AT91_UDP_IMR);
+                if (!status)
+                        break;
+
+                /* USB reset irq:  not maskable */
+                if (status & AT91_UDP_ENDBUSRES) {
+                        at91_udp_write(AT91_UDP_IDR, ~MINIMUS_INTERRUPTUS);
+                        at91_udp_write(AT91_UDP_IER, MINIMUS_INTERRUPTUS);
+                        /* Atmel code clears this irq twice */
+                        at91_udp_write(AT91_UDP_ICR, AT91_UDP_ENDBUSRES);
+                        at91_udp_write(AT91_UDP_ICR, AT91_UDP_ENDBUSRES);
+                        VDBG("end bus reset\n");
+                        udc->addr = 0;
+                        stop_activity(udc);
+
+                        /* enable ep0 */
+                        at91_udp_write(AT91_UDP_CSR(0), AT91_UDP_EPEDS | AT91_UDP_EPTYPE_CTRL);
+                        udc->gadget.speed = USB_SPEED_FULL;
+                        udc->suspended = 0;
+                        at91_udp_write(AT91_UDP_IER, AT91_UDP_EP(0));
+
+                        /*
+                         * NOTE:  this driver keeps clocks off unless the
+                         * USB host is present.  That saves power, and also
+                         * eliminates IRQs (reset, resume, suspend) that can
+                         * otherwise flood from the controller.  If your
+                         * board doesn't support VBUS detection, suspend and
+                         * resume irq logic may need more attention...
+                         */
+
+                /* host initiated suspend (3+ms bus idle) */
+                } else if (status & AT91_UDP_RXSUSP) {
+                        at91_udp_write(AT91_UDP_IDR, AT91_UDP_RXSUSP);
+                        at91_udp_write(AT91_UDP_IER, AT91_UDP_RXRSM);
+                        at91_udp_write(AT91_UDP_ICR, AT91_UDP_RXSUSP);
+                        // VDBG("bus suspend\n");
+                        if (udc->suspended)
+                                continue;
+                        udc->suspended = 1;
+
+                        /*
+                         * NOTE:  when suspending a VBUS-powered device, the
+                         * gadget driver should switch into slow clock mode
+                         * and then into standby to avoid drawing more than
+                         * 500uA power (2500uA for some high-power configs).
+                         */
+                        if (udc->driver && udc->driver->suspend)
+                                udc->driver->suspend(&udc->gadget);
+
+                /* host initiated resume */
+                } else if (status & AT91_UDP_RXRSM) {
+                        at91_udp_write(AT91_UDP_IDR, AT91_UDP_RXRSM);
+                        at91_udp_write(AT91_UDP_IER, AT91_UDP_RXSUSP);
+                        at91_udp_write(AT91_UDP_ICR, AT91_UDP_RXRSM);
+                        // VDBG("bus resume\n");
+                        if (!udc->suspended)
+                                continue;
+                        udc->suspended = 0;
+
+                        /*
+                         * NOTE:  for a VBUS-powered device, the gadget driver
+                         * would normally want to switch out of slow clock
+                         * mode into normal mode.
+                         */
+                        if (udc->driver && udc->driver->resume)
+                                udc->driver->resume(&udc->gadget);
+
+                /* endpoint IRQs are cleared by handling them */
+                } else {
+                        int             i;
+                        unsigned        mask = 1;
+                        struct at91_ep  *ep = &udc->ep[1];
+
+                        if (status & mask)
+                                handle_ep0(udc);
+                        for (i = 1; i < NUM_ENDPOINTS; i++) {
+                                mask <<= 1;
+                                if (status & mask)
+                                        handle_ep(ep);
+                                ep++;
+                        }
+                }
+        }
+
+        return IRQ_HANDLED;
+}
+
+/*-------------------------------------------------------------------------*/
+
+static struct at91_udc controller = {
+        .gadget = {
+                .ops = &at91_udc_ops,
+                .ep0 = &controller.ep[0].ep,
+                .name = driver_name,
+                .dev = {
+                        .bus_id = "gadget"
+                }
+        },
+        .ep[0] = {
+                .ep = {
+                        .name   = ep0name,
+                        .ops    = &at91_ep_ops,
+                },
+                .udc            = &controller,
+                .maxpacket      = 8,
+                .creg           = (void __iomem *)(AT91_VA_BASE_UDP + AT91_UDP_CSR(0)),
+                .int_mask       = 1 << 0,
+        },
+        .ep[1] = {
+                .ep = {
+                        .name   = "ep1",
+                        .ops    = &at91_ep_ops,
+                },
+                .udc            = &controller,
+                .is_pingpong    = 1,
+                .maxpacket      = 64,
+                .creg           = (void __iomem *)(AT91_VA_BASE_UDP + AT91_UDP_CSR(1)),
+                .int_mask       = 1 << 1,
+        },
+        .ep[2] = {
+                .ep = {
+                        .name   = "ep2",
+                        .ops    = &at91_ep_ops,
+                },
+                .udc            = &controller,
+                .is_pingpong    = 1,
+                .maxpacket      = 64,
+                .creg           = (void __iomem *)(AT91_VA_BASE_UDP + AT91_UDP_CSR(2)),
+                .int_mask       = 1 << 2,
+        },
+        .ep[3] = {
+                .ep = {
+                        /* could actually do bulk too */
+                        .name   = "ep3-int",
+                        .ops    = &at91_ep_ops,
+                },
+                .udc            = &controller,
+                .maxpacket      = 8,
+                .creg           = (void __iomem *)(AT91_VA_BASE_UDP + AT91_UDP_CSR(3)),
+                .int_mask       = 1 << 3,
+        },
+        .ep[4] = {
+                .ep = {
+                        .name   = "ep4",
+                        .ops    = &at91_ep_ops,
+                },
+                .udc            = &controller,
+                .is_pingpong    = 1,
+                .maxpacket      = 256,
+                .creg           = (void __iomem *)(AT91_VA_BASE_UDP + AT91_UDP_CSR(4)),
+                .int_mask       = 1 << 4,
+        },
+        .ep[5] = {
+                .ep = {
+                        .name   = "ep5",
+                        .ops    = &at91_ep_ops,
+                },
+                .udc            = &controller,
+                .is_pingpong    = 1,
+                .maxpacket      = 256,
+                .creg           = (void __iomem *)(AT91_VA_BASE_UDP + AT91_UDP_CSR(5)),
+                .int_mask       = 1 << 5,
+        },
+        /* ep6 and ep7 are also reserved */
+};
+
+static irqreturn_t at91_vbus_irq(int irq, void *_udc, struct pt_regs *r)
+{
+        struct at91_udc *udc = _udc;
+        unsigned        value;
+
+        /* vbus needs at least brief debouncing */
+        udelay(10);
+        value = at91_get_gpio_value(udc->board.vbus_pin);
+        if (value != udc->vbus)
+                at91_vbus_session(&udc->gadget, value);
+
+        return IRQ_HANDLED;
+}
+
+int usb_gadget_register_driver (struct usb_gadget_driver *driver)
+{
+        struct at91_udc *udc = &controller;
+        int             retval;
+
+        if (!driver
+                        || driver->speed != USB_SPEED_FULL
+                        || !driver->bind
+                        || !driver->unbind
+                        || !driver->setup) {
+                DBG("bad parameter.\n");
+                return -EINVAL;
+        }
+
+        if (udc->driver) {
+                DBG("UDC already has a gadget driver\n");
+                return -EBUSY;
+        }
+
+        udc->driver = driver;
+        udc->gadget.dev.driver = &driver->driver;
+        udc->gadget.dev.driver_data = &driver->driver;
+        udc->enabled = 1;
+        udc->selfpowered = 1;
+
+        retval = driver->bind(&udc->gadget);
+        if (retval) {
+                DBG("driver->bind() returned %d\n", retval);
+                udc->driver = NULL;
+                return retval;
+        }
+
+        local_irq_disable();
+        pullup(udc, 1);
+        local_irq_enable();
+
+        DBG("bound to %s\n", driver->driver.name);
+        return 0;
+}
+EXPORT_SYMBOL (usb_gadget_register_driver);
+
+int usb_gadget_unregister_driver (struct usb_gadget_driver *driver)
+{
+        struct at91_udc *udc = &controller;
+
+        if (!driver || driver != udc->driver)
+                return -EINVAL;
+
+        local_irq_disable();
+        udc->enabled = 0;
+        pullup(udc, 0);
+        local_irq_enable();
+
+        driver->unbind(&udc->gadget);
+        udc->driver = NULL;
+
+        DBG("unbound from %s\n", driver->driver.name);
+        return 0;
+}
+EXPORT_SYMBOL (usb_gadget_unregister_driver);
+
+/*-------------------------------------------------------------------------*/
+
+static void at91udc_shutdown(struct platform_device *dev)
+{
+        /* force disconnect on reboot */
+        pullup(platform_get_drvdata(dev), 0);
+}
+
+static int __devinit at91udc_probe(struct platform_device *pdev)
+{
+        struct device   *dev = &pdev->dev;
+        struct at91_udc *udc;
+        int             retval;
+
+        if (!dev->platform_data) {
+                /* small (so we copy it) but critical! */
+                DBG("missing platform_data\n");
+                return -ENODEV;
+        }
+
+        if (!request_mem_region(AT91_BASE_UDP, SZ_16K, driver_name)) {
+                DBG("someone's using UDC memory\n");
+                return -EBUSY;
+        }
+
+        /* init software state */
+        udc = &controller;
+        udc->gadget.dev.parent = dev;
+        udc->board = *(struct at91_udc_data *) dev->platform_data;
+        udc->pdev = pdev;
+        udc_reinit(udc);
+        udc->enabled = 0;
+
+        /* get interface and function clocks */
+        udc->iclk = clk_get(dev, "udc_clk");
+        udc->fclk = clk_get(dev, "udpck");
+        if (IS_ERR(udc->iclk) || IS_ERR(udc->fclk)) {
+                DBG("clocks missing\n");
+                return -ENODEV;
+        }
+
+        retval = device_register(&udc->gadget.dev);
+        if (retval < 0)
+                goto fail0;
+
+        /* disable everything until there's a gadget driver and vbus */
+        pullup(udc, 0);
+
+        /* request UDC and maybe VBUS irqs */
+        if (request_irq(AT91_ID_UDP, at91_udc_irq, SA_INTERRUPT, driver_name, udc)) {
+                DBG("request irq %d failed\n", AT91_ID_UDP);
+                retval = -EBUSY;
+                goto fail1;
+        }
+        if (udc->board.vbus_pin > 0) {
+                if (request_irq(udc->board.vbus_pin, at91_vbus_irq, SA_INTERRUPT, driver_name, udc)) {
+                        DBG("request vbus irq %d failed\n", udc->board.vbus_pin);
+                        free_irq(AT91_ID_UDP, udc);
+                        retval = -EBUSY;
+                        goto fail1;
+                }
+        } else {
+                DBG("no VBUS detection, assuming always-on\n");
+                udc->vbus = 1;
+        }
+        dev_set_drvdata(dev, udc);
+        create_debug_file(udc);
+
+        INFO("%s version %s\n", driver_name, DRIVER_VERSION);
+        return 0;
+
+fail1:
+        device_unregister(&udc->gadget.dev);
+fail0:
+        release_mem_region(AT91_VA_BASE_UDP, SZ_16K);
+        DBG("%s probe failed, %d\n", driver_name, retval);
+        return retval;
+}
+
+static int __devexit at91udc_remove(struct platform_device *dev)
+{
+        struct at91_udc *udc = platform_get_drvdata(dev);
+
+        DBG("remove\n");
+
+        pullup(udc, 0);
+
+        if (udc->driver != 0)
+                usb_gadget_unregister_driver(udc->driver);
+
+        remove_debug_file(udc);
+        if (udc->board.vbus_pin > 0)
+                free_irq(udc->board.vbus_pin, udc);
+        free_irq(AT91_ID_UDP, udc);
+        device_unregister(&udc->gadget.dev);
+        release_mem_region(AT91_BASE_UDP, SZ_16K);
+
+        clk_put(udc->iclk);
+        clk_put(udc->fclk);
+
+        return 0;
+}
+
+#ifdef CONFIG_PM
+static int at91udc_suspend(struct platform_device *dev, u32 state, u32 level)
+{
+        struct at91_udc *udc = platform_get_drvdata(dev);
+
+        /*
+         * The "safe" suspend transitions are opportunistic ... e.g. when
+         * the USB link is suspended (48MHz clock autogated off), or when
+         * it's disconnected (programmatically gated off, elsewhere).
+         * Then we can suspend, and the chip can enter slow clock mode.
+         *
+         * The problem case is some component (user mode?) suspending this
+         * device while it's active, with the 48 MHz clock in use.  There
+         * are two basic approaches:  (a) veto suspend levels involving slow
+         * clock mode, (b) disconnect, so 48 MHz will no longer be in use
+         * and we can enter slow clock mode.  This uses (b) for now, since
+         * it's simplest until AT91 PM exists and supports the other option.
+         */
+        if (udc->vbus && !udc->suspended)
+                pullup(udc, 0);
+        return 0;
+}
+
+static int at91udc_resume(struct platform_device *dev, u32 level)
+{
+        struct at91_udc *udc = platform_get_drvdata(dev);
+
+        /* maybe reconnect to host; if so, clocks on */
+        pullup(udc, 1);
+        return 0;
+}
+#else
+#define at91udc_suspend NULL
+#define at91udc_resume  NULL
+#endif
+
+static struct platform_driver at91_udc = {
+        .probe          = at91udc_probe,
+        .remove         = __devexit_p(at91udc_remove),
+        .shutdown       = at91udc_shutdown,
+        .suspend        = at91udc_suspend,
+        .resume         = at91udc_resume,
+        .driver         = {
+                .name   = (char *) driver_name,
+                .owner  = THIS_MODULE,
+        },
+};
+
+static int __devinit udc_init_module(void)
+{
+        return platform_driver_register(&at91_udc);
+}
+module_init(udc_init_module);
+
+static void __devexit udc_exit_module(void)
+{
+        platform_driver_unregister(&at91_udc);
+}
+module_exit(udc_exit_module);
+
+MODULE_DESCRIPTION("AT91RM9200 udc driver");
+MODULE_AUTHOR("Thomas Rathbone, David Brownell");
+MODULE_LICENSE("GPL");
diff --git a/drivers/usb/gadget/at91_udc.h b/drivers/usb/gadget/at91_udc.h
new file mode 100644
index 000000000000..5a4799cedd19
--- /dev/null
+++ b/drivers/usb/gadget/at91_udc.h
@@ -0,0 +1,181 @@
+/*
+ * Copyright (C) 2004 by Thomas Rathbone, HP Labs
+ * Copyright (C) 2005 by Ivan Kokshaysky
+ * Copyright (C) 2006 by SAN People
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the
+ * Free Software Foundation, Inc.,
+ * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+
+#ifndef AT91_UDC_H
+#define AT91_UDC_H
+
+/*
+ * USB Device Port (UDP) registers.
+ * Based on AT91RM9200 datasheet revision E.
+ */
+
+#define AT91_UDP_FRM_NUM        0x00            /* Frame Number Register */
+#define     AT91_UDP_NUM        (0x7ff <<  0)   /* Frame Number */
+#define     AT91_UDP_FRM_ERR    (1     << 16)   /* Frame Error */
+#define     AT91_UDP_FRM_OK     (1     << 17)   /* Frame OK */
+
+#define AT91_UDP_GLB_STAT       0x04            /* Global State Register */
+#define     AT91_UDP_FADDEN     (1 <<  0)       /* Function Address Enable */
+#define     AT91_UDP_CONFG      (1 <<  1)       /* Configured */
+#define     AT91_UDP_ESR        (1 <<  2)       /* Enable Send Resume */
+#define     AT91_UDP_RSMINPR    (1 <<  3)       /* Resume has been sent */
+#define     AT91_UDP_RMWUPE     (1 <<  4)       /* Remote Wake Up Enable */
+
+#define AT91_UDP_FADDR          0x08            /* Function Address Register */
+#define     AT91_UDP_FADD       (0x7f << 0)     /* Function Address Value */
+#define     AT91_UDP_FEN        (1    << 8)     /* Function Enable */
+
+#define AT91_UDP_IER            0x10            /* Interrupt Enable Register */
+#define AT91_UDP_IDR            0x14            /* Interrupt Disable Register */
+#define AT91_UDP_IMR            0x18            /* Interrupt Mask Register */
+
+#define AT91_UDP_ISR            0x1c            /* Interrupt Status Register */
+#define     AT91_UDP_EP(n)      (1 << (n))      /* Endpoint Interrupt Status */
+#define     AT91_UDP_RXSUSP     (1 <<  8)       /* USB Suspend Interrupt Status */
+#define     AT91_UDP_RXRSM      (1 <<  9)       /* USB Resume Interrupt Status */
+#define     AT91_UDP_EXTRSM     (1 << 10)       /* External Resume Interrupt Status */
+#define     AT91_UDP_SOFINT     (1 << 11)       /* Start of Frame Interrupt Status */
+#define     AT91_UDP_ENDBUSRES  (1 << 12)       /* End of Bus Reset Interrpt Status */
+#define     AT91_UDP_WAKEUP     (1 << 13)       /* USB Wakeup Interrupt Status */
+
+#define AT91_UDP_ICR            0x20            /* Interrupt Clear Register */
+#define AT91_UDP_RST_EP         0x28            /* Reset Endpoint Register */
+
+#define AT91_UDP_CSR(n)         (0x30+((n)*4))  /* Endpoint Control/Status Registers 0-7 */
+#define     AT91_UDP_TXCOMP     (1 <<  0)       /* Generates IN packet with data previously written in DPR */
+#define     AT91_UDP_RX_DATA_BK0 (1 <<  1)      /* Receive Data Bank 0 */
+#define     AT91_UDP_RXSETUP    (1 <<  2)       /* Send STALL to the host */
+#define     AT91_UDP_STALLSENT  (1 <<  3)       /* Stall Sent / Isochronous error (Isochronous endpoints) */
+#define     AT91_UDP_TXPKTRDY   (1 <<  4)       /* Transmit Packet Ready */
+#define     AT91_UDP_FORCESTALL (1 <<  5)       /* Force Stall */
+#define     AT91_UDP_RX_DATA_BK1 (1 <<  6)      /* Receive Data Bank 1 */
+#define     AT91_UDP_DIR        (1 <<  7)       /* Transfer Direction */
+#define     AT91_UDP_EPTYPE     (7 <<  8)       /* Endpoint Type */
+#define         AT91_UDP_EPTYPE_CTRL            (0 <<  8)
+#define         AT91_UDP_EPTYPE_ISO_OUT         (1 <<  8)
+#define         AT91_UDP_EPTYPE_BULK_OUT        (2 <<  8)
+#define         AT91_UDP_EPTYPE_INT_OUT         (3 <<  8)
+#define         AT91_UDP_EPTYPE_ISO_IN          (5 <<  8)
+#define         AT91_UDP_EPTYPE_BULK_IN         (6 <<  8)
+#define         AT91_UDP_EPTYPE_INT_IN          (7 <<  8)
+#define     AT91_UDP_DTGLE      (1 << 11)       /* Data Toggle */
+#define     AT91_UDP_EPEDS      (1 << 15)       /* Endpoint Enable/Disable */
+#define     AT91_UDP_RXBYTECNT  (0x7ff << 16)   /* Number of bytes in FIFO */
+
+#define AT91_UDP_FDR(n)         (0x50+((n)*4))  /* Endpoint FIFO Data Registers 0-7 */
+
+#define AT91_UDP_TXVC           0x74            /* Transceiver Control Register */
+#define     AT91_UDP_TXVC_TXVDIS (1 << 8)       /* Transceiver Disable */
+
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * controller driver data structures
+ */
+
+#define NUM_ENDPOINTS   6
+
+/*
+ * hardware won't disable bus reset, or resume while the controller
+ * is suspended ... watching suspend helps keep the logic symmetric.
+ */
+#define MINIMUS_INTERRUPTUS \
+        (AT91_UDP_ENDBUSRES | AT91_UDP_RXRSM | AT91_UDP_RXSUSP)
+
+struct at91_ep {
+        struct usb_ep                   ep;
+        struct list_head                queue;
+        struct at91_udc                 *udc;
+        void __iomem                    *creg;
+
+        unsigned                        maxpacket:16;
+        u8                              int_mask;
+        unsigned                        is_pingpong:1;
+
+        unsigned                        stopped:1;
+        unsigned                        is_in:1;
+        unsigned                        is_iso:1;
+        unsigned                        fifo_bank:1;
+
+        const struct usb_endpoint_descriptor
+                                        *desc;
+};
+
+/*
+ * driver is non-SMP, and just blocks IRQs whenever it needs
+ * access protection for chip registers or driver state
+ */
+struct at91_udc {
+        struct usb_gadget               gadget;
+        struct at91_ep                  ep[NUM_ENDPOINTS];
+        struct usb_gadget_driver        *driver;
+        unsigned                        vbus:1;
+        unsigned                        enabled:1;
+        unsigned                        clocked:1;
+        unsigned                        suspended:1;
+        unsigned                        req_pending:1;
+        unsigned                        wait_for_addr_ack:1;
+        unsigned                        wait_for_config_ack:1;
+        unsigned                        selfpowered:1;
+        u8                              addr;
+        struct at91_udc_data            board;
+        struct clk                      *iclk, *fclk;
+        struct platform_device          *pdev;
+        struct proc_dir_entry           *pde;
+};
+
+static inline struct at91_udc *to_udc(struct usb_gadget *g)
+{
+        return container_of(g, struct at91_udc, gadget);
+}
+
+struct at91_request {
+        struct usb_request              req;
+        struct list_head                queue;
+};
+
+/*-------------------------------------------------------------------------*/
+
+#ifdef DEBUG
+#define DBG(stuff...)           printk(KERN_DEBUG "udc: " stuff)
+#else
+#define DBG(stuff...)           do{}while(0)
+#endif
+
+#ifdef VERBOSE
+#    define VDBG                DBG
+#else
+#    define VDBG(stuff...)      do{}while(0)
+#endif
+
+#ifdef PACKET_TRACE
+#    define PACKET              VDBG
+#else
+#    define PACKET(stuff...)    do{}while(0)
+#endif
+
+#define ERR(stuff...)           printk(KERN_ERR "udc: " stuff)
+#define WARN(stuff...)          printk(KERN_WARNING "udc: " stuff)
+#define INFO(stuff...)          printk(KERN_INFO "udc: " stuff)
+
+#endif
+
diff --git a/drivers/usb/gadget/dummy_hcd.c b/drivers/usb/gadget/dummy_hcd.c
index 9734cb76dd6c..42ce41d71b7f 100644
--- a/drivers/usb/gadget/dummy_hcd.c
+++ b/drivers/usb/gadget/dummy_hcd.c
@@ -478,10 +478,9 @@ dummy_alloc_request (struct usb_ep *_ep, gfp_t mem_flags)
                 return NULL;
         ep = usb_ep_to_dummy_ep (_ep);
 
-        req = kmalloc (sizeof *req, mem_flags);
+        req = kzalloc(sizeof(*req), mem_flags);
         if (!req)
                 return NULL;
-        memset (req, 0, sizeof *req);
         INIT_LIST_HEAD (&req->queue);
         return &req->req;
 }
diff --git a/drivers/usb/gadget/ether.c b/drivers/usb/gadget/ether.c
index afc84cfb61f9..c3d8e5c5bf28 100644
--- a/drivers/usb/gadget/ether.c
+++ b/drivers/usb/gadget/ether.c
@@ -182,33 +182,37 @@ struct eth_dev {
  * parameters are in UTF-8 (superset of ASCII's 7 bit characters).
  */
 
-static ushort __initdata idVendor;
+static ushort idVendor;
 module_param(idVendor, ushort, S_IRUGO);
 MODULE_PARM_DESC(idVendor, "USB Vendor ID");
 
-static ushort __initdata idProduct;
+static ushort idProduct;
 module_param(idProduct, ushort, S_IRUGO);
 MODULE_PARM_DESC(idProduct, "USB Product ID");
 
-static ushort __initdata bcdDevice;
+static ushort bcdDevice;
 module_param(bcdDevice, ushort, S_IRUGO);
 MODULE_PARM_DESC(bcdDevice, "USB Device version (BCD)");
 
-static char *__initdata iManufacturer;
+static char *iManufacturer;
 module_param(iManufacturer, charp, S_IRUGO);
 MODULE_PARM_DESC(iManufacturer, "USB Manufacturer string");
 
-static char *__initdata iProduct;
+static char *iProduct;
 module_param(iProduct, charp, S_IRUGO);
 MODULE_PARM_DESC(iProduct, "USB Product string");
 
+static char *iSerialNumber;
+module_param(iSerialNumber, charp, S_IRUGO);
+MODULE_PARM_DESC(iSerialNumber, "SerialNumber");
+
 /* initial value, changed by "ifconfig usb0 hw ether xx:xx:xx:xx:xx:xx" */
-static char *__initdata dev_addr;
+static char *dev_addr;
 module_param(dev_addr, charp, S_IRUGO);
 MODULE_PARM_DESC(dev_addr, "Device Ethernet Address");
 
 /* this address is invisible to ifconfig */
-static char *__initdata host_addr;
+static char *host_addr;
 module_param(host_addr, charp, S_IRUGO);
 MODULE_PARM_DESC(host_addr, "Host Ethernet Address");
 
@@ -253,6 +257,14 @@ MODULE_PARM_DESC(host_addr, "Host Ethernet Address");
 #define DEV_CONFIG_CDC
 #endif
 
+#ifdef CONFIG_USB_GADGET_MUSBHSFC
+#define DEV_CONFIG_CDC
+#endif
+
+#ifdef CONFIG_USB_GADGET_MUSBHDRC
+#define DEV_CONFIG_CDC
+#endif
+
 
 /* For CDC-incapable hardware, choose the simple cdc subset.
  * Anything that talks bulk (without notable bugs) can do this.
@@ -395,6 +407,7 @@ static inline int BITRATE(struct usb_gadget *g)
 #define STRING_CDC                      7
 #define STRING_SUBSET                   8
 #define STRING_RNDIS                    9
+#define STRING_SERIALNUMBER             10
 
 /* holds our biggest descriptor (or RNDIS response) */
 #define USB_BUFSIZ      256
@@ -862,6 +875,7 @@ static inline void __init hs_subset_descriptors(void)
 
 static char                             manufacturer [50];
 static char                             product_desc [40] = DRIVER_DESC;
+static char                             serial_number [20];
 
 #ifdef  DEV_CONFIG_CDC
 /* address that the host will use ... usually assigned at random */
@@ -872,6 +886,7 @@ static char				ethaddr [2 * ETH_ALEN + 1];
 static struct usb_string                strings [] = {
         { STRING_MANUFACTURER,  manufacturer, },
         { STRING_PRODUCT,       product_desc, },
+        { STRING_SERIALNUMBER,  serial_number, },
         { STRING_DATA,          "Ethernet Data", },
 #ifdef  DEV_CONFIG_CDC
         { STRING_CDC,           "CDC Ethernet", },
@@ -1549,7 +1564,8 @@ static int eth_change_mtu (struct net_device *net, int new_mtu)
 {
         struct eth_dev  *dev = netdev_priv(net);
 
-        // FIXME if rndis, don't change while link's live
+        if (dev->rndis)
+                return -EBUSY;
 
         if (new_mtu <= ETH_HLEN || new_mtu > ETH_FRAME_LEN)
                 return -ERANGE;
@@ -2116,7 +2132,7 @@ eth_req_free (struct usb_ep *ep, struct usb_request *req)
 }
 
 
-static void
+static void __exit
 eth_unbind (struct usb_gadget *gadget)
 {
         struct eth_dev          *dev = get_gadget_data (gadget);
@@ -2153,7 +2169,7 @@ static u8 __init nibble (unsigned char c)
         return 0;
 }
 
-static void __init get_ether_addr (const char *str, u8 *dev_addr)
+static int __init get_ether_addr(const char *str, u8 *dev_addr)
 {
         if (str) {
                 unsigned        i;
@@ -2168,9 +2184,10 @@ static void __init get_ether_addr (const char *str, u8 *dev_addr)
                         dev_addr [i] = num;
                 }
                 if (is_valid_ether_addr (dev_addr))
-                        return;
+                        return 0;
         }
         random_ether_addr(dev_addr);
+        return 1;
 }
 
 static int __init
@@ -2268,6 +2285,10 @@ eth_bind (struct usb_gadget *gadget)
                 strlcpy (manufacturer, iManufacturer, sizeof manufacturer);
         if (iProduct)
                 strlcpy (product_desc, iProduct, sizeof product_desc);
+        if (iSerialNumber) {
+                device_desc.iSerialNumber = STRING_SERIALNUMBER,
+                strlcpy(serial_number, iSerialNumber, sizeof serial_number);
+        }
 
         /* all we really need is bulk IN/OUT */
         usb_ep_autoconfig_reset (gadget);
@@ -2377,9 +2398,13 @@ autoconf_fail:
          * The host side address is used with CDC and RNDIS, and commonly
          * ends up in a persistent config database.
          */
-        get_ether_addr(dev_addr, net->dev_addr);
+        if (get_ether_addr(dev_addr, net->dev_addr))
+                dev_warn(&gadget->dev,
+                        "using random %s ethernet address\n", "self");
         if (cdc || rndis) {
-                get_ether_addr(host_addr, dev->host_mac);
+                if (get_ether_addr(host_addr, dev->host_mac))
+                        dev_warn(&gadget->dev,
+                                "using random %s ethernet address\n", "host");
 #ifdef  DEV_CONFIG_CDC
                 snprintf (ethaddr, sizeof ethaddr, "%02X%02X%02X%02X%02X%02X",
                         dev->host_mac [0], dev->host_mac [1],
@@ -2523,7 +2548,7 @@ static struct usb_gadget_driver eth_driver = {
 
         .function       = (char *) driver_desc,
         .bind           = eth_bind,
-        .unbind         = eth_unbind,
+        .unbind         = __exit_p(eth_unbind),
 
         .setup          = eth_setup,
         .disconnect     = eth_disconnect,
diff --git a/drivers/usb/gadget/file_storage.c b/drivers/usb/gadget/file_storage.c
index de59c58896d6..cf3be299e353 100644
--- a/drivers/usb/gadget/file_storage.c
+++ b/drivers/usb/gadget/file_storage.c
@@ -3678,7 +3678,7 @@ static void lun_release(struct device *dev)
         kref_put(&fsg->ref, fsg_release);
 }
 
-static void fsg_unbind(struct usb_gadget *gadget)
+static void __exit fsg_unbind(struct usb_gadget *gadget)
 {
         struct fsg_dev          *fsg = get_gadget_data(gadget);
         int                     i;
@@ -4064,7 +4064,7 @@ static struct usb_gadget_driver		fsg_driver = {
 #endif
         .function       = (char *) longname,
         .bind           = fsg_bind,
-        .unbind         = fsg_unbind,
+        .unbind         = __exit_p(fsg_unbind),
         .disconnect     = fsg_disconnect,
         .setup          = fsg_setup,
         .suspend        = fsg_suspend,
diff --git a/drivers/usb/gadget/gadget_chips.h b/drivers/usb/gadget/gadget_chips.h
index 8cbae21d84b9..c4081407171f 100644
--- a/drivers/usb/gadget/gadget_chips.h
+++ b/drivers/usb/gadget/gadget_chips.h
@@ -3,9 +3,9 @@
  * gadget drivers or other code that needs to deal with them, and which
  * autoconfigures instead of using early binding to the hardware.
  *
- * This could eventually work like the ARM mach_is_*() stuff, driven by
+ * This SHOULD eventually work like the ARM mach_is_*() stuff, driven by
  * some config file that gets updated as new hardware is supported.
- * (And avoiding the runtime comparisons in typical one-choice cases.)
+ * (And avoiding all runtime comparisons in typical one-choice configs!)
  *
  * NOTE:  some of these controller drivers may not be available yet.
  */
@@ -93,6 +93,26 @@
 #define gadget_is_imx(g)        0
 #endif
 
+/* Mentor high speed function controller */
+#ifdef CONFIG_USB_GADGET_MUSBHSFC
+#define gadget_is_musbhsfc(g)   !strcmp("musbhsfc_udc", (g)->name)
+#else
+#define gadget_is_musbhsfc(g)   0
+#endif
+
+/* Mentor high speed "dual role" controller, peripheral mode */
+#ifdef CONFIG_USB_GADGET_MUSBHDRC
+#define gadget_is_musbhdrc(g)   !strcmp("musbhdrc_udc", (g)->name)
+#else
+#define gadget_is_musbhdrc(g)   0
+#endif
+
+#ifdef CONFIG_USB_GADGET_MPC8272
+#define gadget_is_mpc8272(g)    !strcmp("mpc8272_udc", (g)->name)
+#else
+#define gadget_is_mpc8272(g)    0
+#endif
+
 // CONFIG_USB_GADGET_SX2
 // CONFIG_USB_GADGET_AU1X00
 // ...
@@ -143,5 +163,11 @@ static inline int usb_gadget_controller_number(struct usb_gadget *gadget)
                 return 0x13;
         else if (gadget_is_imx(gadget))
                 return 0x14;
+        else if (gadget_is_musbhsfc(gadget))
+                return 0x15;
+        else if (gadget_is_musbhdrc(gadget))
+                return 0x16;
+        else if (gadget_is_mpc8272(gadget))
+                return 0x17;
         return -ENOENT;
 }
diff --git a/drivers/usb/gadget/goku_udc.c b/drivers/usb/gadget/goku_udc.c
index b0f3cd63e3b9..66b81bbf6bee 100644
--- a/drivers/usb/gadget/goku_udc.c
+++ b/drivers/usb/gadget/goku_udc.c
@@ -275,11 +275,10 @@ goku_alloc_request(struct usb_ep *_ep, gfp_t gfp_flags)
 
         if (!_ep)
                 return NULL;
-        req = kmalloc(sizeof *req, gfp_flags);
+        req = kzalloc(sizeof *req, gfp_flags);
         if (!req)
                 return NULL;
 
-        memset(req, 0, sizeof *req);
         req->req.dma = DMA_ADDR_INVALID;
         INIT_LIST_HEAD(&req->queue);
         return &req->req;
diff --git a/drivers/usb/gadget/inode.c b/drivers/usb/gadget/inode.c
index 0aab7d24c768..b44cfda76b61 100644
--- a/drivers/usb/gadget/inode.c
+++ b/drivers/usb/gadget/inode.c
@@ -170,10 +170,9 @@ static struct dev_data *dev_new (void)
 {
         struct dev_data         *dev;
 
-        dev = kmalloc (sizeof *dev, GFP_KERNEL);
+        dev = kzalloc(sizeof(*dev), GFP_KERNEL);
         if (!dev)
                 return NULL;
-        memset (dev, 0, sizeof *dev);
         dev->state = STATE_DEV_DISABLED;
         atomic_set (&dev->count, 1);
         spin_lock_init (&dev->lock);
@@ -1592,10 +1591,9 @@ static int activate_ep_files (struct dev_data *dev)
         gadget_for_each_ep (ep, dev->gadget) {
                 struct ep_data  *data;
 
-                data = kmalloc (sizeof *data, GFP_KERNEL);
+                data = kzalloc(sizeof(*data), GFP_KERNEL);
                 if (!data)
                         goto enomem;
-                memset (data, 0, sizeof data);
                 data->state = STATE_EP_DISABLED;
                 init_MUTEX (&data->lock);
                 init_waitqueue_head (&data->wait);
diff --git a/drivers/usb/gadget/lh7a40x_udc.c b/drivers/usb/gadget/lh7a40x_udc.c
index 1a362c5e7f3d..0d3424eda038 100644
--- a/drivers/usb/gadget/lh7a40x_udc.c
+++ b/drivers/usb/gadget/lh7a40x_udc.c
@@ -1114,11 +1114,10 @@ static struct usb_request *lh7a40x_alloc_request(struct usb_ep *ep,
 
         DEBUG("%s, %p\n", __FUNCTION__, ep);
 
-        req = kmalloc(sizeof *req, gfp_flags);
+        req = kzalloc(sizeof(*req), gfp_flags);
         if (!req)
                 return 0;
 
-        memset(req, 0, sizeof *req);
         INIT_LIST_HEAD(&req->queue);
 
         return &req->req;
diff --git a/drivers/usb/gadget/net2280.c b/drivers/usb/gadget/net2280.c
index 67b13ab2f3f5..fb73dc100535 100644
--- a/drivers/usb/gadget/net2280.c
+++ b/drivers/usb/gadget/net2280.c
@@ -386,11 +386,10 @@ net2280_alloc_request (struct usb_ep *_ep, gfp_t gfp_flags)
                 return NULL;
         ep = container_of (_ep, struct net2280_ep, ep);
 
-        req = kmalloc (sizeof *req, gfp_flags);
+        req = kzalloc(sizeof(*req), gfp_flags);
         if (!req)
                 return NULL;
 
-        memset (req, 0, sizeof *req);
         req->req.dma = DMA_ADDR_INVALID;
         INIT_LIST_HEAD (&req->queue);
 
diff --git a/drivers/usb/gadget/omap_udc.c b/drivers/usb/gadget/omap_udc.c
index a8972d7c97be..fbea51448909 100644
--- a/drivers/usb/gadget/omap_udc.c
+++ b/drivers/usb/gadget/omap_udc.c
@@ -273,9 +273,8 @@ omap_alloc_request(struct usb_ep *ep, gfp_t gfp_flags)
 {
         struct omap_req *req;
 
-        req = kmalloc(sizeof *req, gfp_flags);
+        req = kzalloc(sizeof(*req), gfp_flags);
         if (req) {
-                memset (req, 0, sizeof *req);
                 req->req.dma = DMA_ADDR_INVALID;
                 INIT_LIST_HEAD (&req->queue);
         }
@@ -2586,11 +2585,10 @@ omap_udc_setup(struct platform_device *odev, struct otg_transceiver *xceiv)
         /* UDC_PULLUP_EN gates the chip clock */
         // OTG_SYSCON_1_REG |= DEV_IDLE_EN;
 
-        udc = kmalloc (sizeof *udc, SLAB_KERNEL);
+        udc = kzalloc(sizeof(*udc), SLAB_KERNEL);
         if (!udc)
                 return -ENOMEM;
 
-        memset(udc, 0, sizeof *udc);
         spin_lock_init (&udc->lock);
 
         udc->gadget.ops = &omap_gadget_ops;
diff --git a/drivers/usb/gadget/pxa2xx_udc.c b/drivers/usb/gadget/pxa2xx_udc.c
index bb028c5b8952..680f7fc5b171 100644
--- a/drivers/usb/gadget/pxa2xx_udc.c
+++ b/drivers/usb/gadget/pxa2xx_udc.c
@@ -335,11 +335,10 @@ pxa2xx_ep_alloc_request (struct usb_ep *_ep, gfp_t gfp_flags)
 {
         struct pxa2xx_request *req;
 
-        req = kmalloc (sizeof *req, gfp_flags);
+        req = kzalloc(sizeof(*req), gfp_flags);
         if (!req)
                 return NULL;
 
-        memset (req, 0, sizeof *req);
         INIT_LIST_HEAD (&req->queue);
         return &req->req;
 }
diff --git a/drivers/usb/gadget/serial.c b/drivers/usb/gadget/serial.c
index ba9acd531024..b992546c394d 100644
--- a/drivers/usb/gadget/serial.c
+++ b/drivers/usb/gadget/serial.c
@@ -369,7 +369,7 @@ static struct usb_gadget_driver gs_gadget_driver = {
 #endif /* CONFIG_USB_GADGET_DUALSPEED */
         .function =             GS_LONG_NAME,
         .bind =                 gs_bind,
-        .unbind =               gs_unbind,
+        .unbind =               __exit_p(gs_unbind),
         .setup =                gs_setup,
         .disconnect =           gs_disconnect,
         .driver = {
@@ -1413,7 +1413,7 @@ requeue:
  * Called on module load.  Allocates and initializes the device
  * structure and a control request.
  */
-static int gs_bind(struct usb_gadget *gadget)
+static int __init gs_bind(struct usb_gadget *gadget)
 {
         int ret;
         struct usb_ep *ep;
@@ -1538,7 +1538,7 @@ autoconf_fail:
  * Called on module unload.  Frees the control request and device
  * structure.
  */
-static void gs_unbind(struct usb_gadget *gadget)
+static void __exit gs_unbind(struct usb_gadget *gadget)
 {
         struct gs_dev *dev = get_gadget_data(gadget);
 
@@ -2178,10 +2178,9 @@ static int gs_alloc_ports(struct gs_dev *dev, gfp_t kmalloc_flags)
                 return -EIO;
 
         for (i=0; i<GS_NUM_PORTS; i++) {
-                if ((port=(struct gs_port *)kmalloc(sizeof(struct gs_port), kmalloc_flags)) == NULL)
+                if ((port=kzalloc(sizeof(struct gs_port), kmalloc_flags)) == NULL)
                         return -ENOMEM;
 
-                memset(port, 0, sizeof(struct gs_port));
                 port->port_dev = dev;
                 port->port_num = i;
                 port->port_line_coding.dwDTERate = cpu_to_le32(GS_DEFAULT_DTE_RATE);
diff --git a/drivers/usb/gadget/zero.c b/drivers/usb/gadget/zero.c
index ae7a1c0f5748..51424f66a765 100644
--- a/drivers/usb/gadget/zero.c
+++ b/drivers/usb/gadget/zero.c
@@ -1119,7 +1119,7 @@ zero_autoresume (unsigned long _dev)
 
 /*-------------------------------------------------------------------------*/
 
-static void
+static void __exit
 zero_unbind (struct usb_gadget *gadget)
 {
         struct zero_dev         *dev = get_gadget_data (gadget);
@@ -1136,7 +1136,7 @@ zero_unbind (struct usb_gadget *gadget)
         set_gadget_data (gadget, NULL);
 }
 
-static int
+static int __init
 zero_bind (struct usb_gadget *gadget)
 {
         struct zero_dev         *dev;
@@ -1188,10 +1188,9 @@ autoconf_fail:
 
 
         /* ok, we made sense of the hardware ... */
-        dev = kmalloc (sizeof *dev, SLAB_KERNEL);
+        dev = kzalloc(sizeof(*dev), SLAB_KERNEL);
         if (!dev)
                 return -ENOMEM;
-        memset (dev, 0, sizeof *dev);
         spin_lock_init (&dev->lock);
         dev->gadget = gadget;
         set_gadget_data (gadget, dev);
@@ -1224,12 +1223,6 @@ autoconf_fail:
                 loopback_config.bmAttributes |= USB_CONFIG_ATT_WAKEUP;
         }
 
-        if (gadget->is_otg) {
-                otg_descriptor.bmAttributes |= USB_OTG_HNP,
-                source_sink_config.bmAttributes |= USB_CONFIG_ATT_WAKEUP;
-                loopback_config.bmAttributes |= USB_CONFIG_ATT_WAKEUP;
-        }
-
         usb_gadget_set_selfpowered (gadget);
 
         init_timer (&dev->resume);
@@ -1294,7 +1287,7 @@ static struct usb_gadget_driver zero_driver = {
 #endif
         .function       = (char *) longname,
         .bind           = zero_bind,
-        .unbind         = zero_unbind,
+        .unbind         = __exit_p(zero_unbind),
 
         .setup          = zero_setup,
         .disconnect     = zero_disconnect,
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index be3fd9bce573..e27b79a3c05f 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -6,7 +6,7 @@ comment "USB Host Controller Drivers"
 
 config USB_EHCI_HCD
         tristate "EHCI HCD (USB 2.0) support"
-        depends on USB && PCI
+        depends on USB && USB_ARCH_HAS_EHCI
         ---help---
           The Enhanced Host Controller Interface (EHCI) is standard for USB 2.0
           "high speed" (480 Mbit/sec, 60 Mbyte/sec) host controller hardware.
diff --git a/drivers/usb/host/ehci-au1xxx.c b/drivers/usb/host/ehci-au1xxx.c
new file mode 100644
index 000000000000..63eadeec1324
--- /dev/null
+++ b/drivers/usb/host/ehci-au1xxx.c
@@ -0,0 +1,297 @@
+/*
+ * EHCI HCD (Host Controller Driver) for USB.
+ *
+ * (C) Copyright 2000-2004 David Brownell <dbrownell@users.sourceforge.net>
+ *
+ * Bus Glue for AMD Alchemy Au1xxx
+ *
+ * Based on "ohci-au1xxx.c" by Matt Porter <mporter@kernel.crashing.org>
+ *
+ * Modified for AMD Alchemy Au1200 EHC
+ *  by K.Boge <karsten.boge@amd.com>
+ *
+ * This file is licenced under the GPL.
+ */
+
+#include <linux/platform_device.h>
+#include <asm/mach-au1x00/au1000.h>
+
+#ifndef CONFIG_SOC_AU1200
+#error "this Alchemy chip doesn't have EHCI"
+#else                           /* Au1200 */
+
+#define USB_HOST_CONFIG   (USB_MSR_BASE + USB_MSR_MCFG)
+#define USB_MCFG_PFEN     (1<<31)
+#define USB_MCFG_RDCOMB   (1<<30)
+#define USB_MCFG_SSDEN    (1<<23)
+#define USB_MCFG_PHYPLLEN (1<<19)
+#define USB_MCFG_EHCCLKEN (1<<17)
+#define USB_MCFG_UCAM     (1<<7)
+#define USB_MCFG_EBMEN    (1<<3)
+#define USB_MCFG_EMEMEN   (1<<2)
+
+#define USBH_ENABLE_CE    (USB_MCFG_PHYPLLEN | USB_MCFG_EHCCLKEN)
+
+#ifdef CONFIG_DMA_COHERENT
+#define USBH_ENABLE_INIT  (USBH_ENABLE_CE \
+                         | USB_MCFG_PFEN | USB_MCFG_RDCOMB \
+                         | USB_MCFG_SSDEN | USB_MCFG_UCAM \
+                         | USB_MCFG_EBMEN | USB_MCFG_EMEMEN)
+#else
+#define USBH_ENABLE_INIT  (USBH_ENABLE_CE \
+                         | USB_MCFG_PFEN | USB_MCFG_RDCOMB \
+                         | USB_MCFG_SSDEN \
+                         | USB_MCFG_EBMEN | USB_MCFG_EMEMEN)
+#endif
+#define USBH_DISABLE      (USB_MCFG_EBMEN | USB_MCFG_EMEMEN)
+
+#endif                          /* Au1200 */
+
+extern int usb_disabled(void);
+
+/*-------------------------------------------------------------------------*/
+
+static void au1xxx_start_ehc(struct platform_device *dev)
+{
+        pr_debug(__FILE__ ": starting Au1xxx EHCI USB Controller\n");
+
+        /* write HW defaults again in case Yamon cleared them */
+        if (au_readl(USB_HOST_CONFIG) == 0) {
+                au_writel(0x00d02000, USB_HOST_CONFIG);
+                au_readl(USB_HOST_CONFIG);
+                udelay(1000);
+        }
+        /* enable host controller */
+        au_writel(USBH_ENABLE_CE | au_readl(USB_HOST_CONFIG), USB_HOST_CONFIG);
+        au_readl(USB_HOST_CONFIG);
+        udelay(1000);
+        au_writel(USBH_ENABLE_INIT | au_readl(USB_HOST_CONFIG),
+                  USB_HOST_CONFIG);
+        au_readl(USB_HOST_CONFIG);
+        udelay(1000);
+
+        pr_debug(__FILE__ ": Clock to USB host has been enabled\n");
+}
+
+static void au1xxx_stop_ehc(struct platform_device *dev)
+{
+        pr_debug(__FILE__ ": stopping Au1xxx EHCI USB Controller\n");
+
+        /* Disable mem */
+        au_writel(~USBH_DISABLE & au_readl(USB_HOST_CONFIG), USB_HOST_CONFIG);
+        udelay(1000);
+        /* Disable clock */
+        au_writel(~USB_MCFG_EHCCLKEN & au_readl(USB_HOST_CONFIG),
+                  USB_HOST_CONFIG);
+        au_readl(USB_HOST_CONFIG);
+}
+
+/*-------------------------------------------------------------------------*/
+
+/* configure so an HC device and id are always provided */
+/* always called with process context; sleeping is OK */
+
+/**
+ * usb_ehci_au1xxx_probe - initialize Au1xxx-based HCDs
+ * Context: !in_interrupt()
+ *
+ * Allocates basic resources for this USB host controller, and
+ * then invokes the start() method for the HCD associated with it
+ * through the hotplug entry's driver_data.
+ *
+ */
+int usb_ehci_au1xxx_probe(const struct hc_driver *driver,
+                          struct usb_hcd **hcd_out, struct platform_device *dev)
+{
+        int retval;
+        struct usb_hcd *hcd;
+        struct ehci_hcd *ehci;
+
+#if defined(CONFIG_SOC_AU1200) && defined(CONFIG_DMA_COHERENT)
+
+        /* Au1200 AB USB does not support coherent memory */
+        if (!(read_c0_prid() & 0xff)) {
+                pr_info("%s: this is chip revision AB!\n", dev->dev.name);
+                pr_info("%s: update your board or re-configure the kernel\n",
+                        dev->dev.name);
+                return -ENODEV;
+        }
+#endif
+
+        au1xxx_start_ehc(dev);
+
+        if (dev->resource[1].flags != IORESOURCE_IRQ) {
+                pr_debug("resource[1] is not IORESOURCE_IRQ");
+                retval = -ENOMEM;
+        }
+        hcd = usb_create_hcd(driver, &dev->dev, "Au1xxx");
+        if (!hcd)
+                return -ENOMEM;
+        hcd->rsrc_start = dev->resource[0].start;
+        hcd->rsrc_len = dev->resource[0].end - dev->resource[0].start + 1;
+
+        if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
+                pr_debug("request_mem_region failed");
+                retval = -EBUSY;
+                goto err1;
+        }
+
+        hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
+        if (!hcd->regs) {
+                pr_debug("ioremap failed");
+                retval = -ENOMEM;
+                goto err2;
+        }
+
+        ehci = hcd_to_ehci(hcd);
+        ehci->caps = hcd->regs;
+        ehci->regs = hcd->regs + HC_LENGTH(readl(&ehci->caps->hc_capbase));
+        /* cache this readonly data; minimize chip reads */
+        ehci->hcs_params = readl(&ehci->caps->hcs_params);
+
+        /* ehci_hcd_init(hcd_to_ehci(hcd)); */
+
+        retval =
+            usb_add_hcd(hcd, dev->resource[1].start, SA_INTERRUPT | SA_SHIRQ);
+        if (retval == 0)
+                return retval;
+
+        au1xxx_stop_ehc(dev);
+        iounmap(hcd->regs);
+err2:
+        release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+err1:
+        usb_put_hcd(hcd);
+        return retval;
+}
+
+/* may be called without controller electrically present */
+/* may be called with controller, bus, and devices active */
+
+/**
+ * usb_ehci_hcd_au1xxx_remove - shutdown processing for Au1xxx-based HCDs
+ * @dev: USB Host Controller being removed
+ * Context: !in_interrupt()
+ *
+ * Reverses the effect of usb_ehci_hcd_au1xxx_probe(), first invoking
+ * the HCD's stop() method.  It is always called from a thread
+ * context, normally "rmmod", "apmd", or something similar.
+ *
+ */
+void usb_ehci_au1xxx_remove(struct usb_hcd *hcd, struct platform_device *dev)
+{
+        usb_remove_hcd(hcd);
+        iounmap(hcd->regs);
+        release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+        usb_put_hcd(hcd);
+        au1xxx_stop_ehc(dev);
+}
+
+/*-------------------------------------------------------------------------*/
+
+static const struct hc_driver ehci_au1xxx_hc_driver = {
+        .description = hcd_name,
+        .product_desc = "Au1xxx EHCI",
+        .hcd_priv_size = sizeof(struct ehci_hcd),
+
+        /*
+         * generic hardware linkage
+         */
+        .irq = ehci_irq,
+        .flags = HCD_MEMORY | HCD_USB2,
+
+        /*
+         * basic lifecycle operations
+         */
+        .reset = ehci_init,
+        .start = ehci_run,
+        .stop = ehci_stop,
+
+        /*
+         * managing i/o requests and associated device resources
+         */
+        .urb_enqueue = ehci_urb_enqueue,
+        .urb_dequeue = ehci_urb_dequeue,
+        .endpoint_disable = ehci_endpoint_disable,
+
+        /*
+         * scheduling support
+         */
+        .get_frame_number = ehci_get_frame,
+
+        /*
+         * root hub support
+         */
+        .hub_status_data = ehci_hub_status_data,
+        .hub_control = ehci_hub_control,
+#ifdef  CONFIG_PM
+        .hub_suspend = ehci_hub_suspend,
+        .hub_resume = ehci_hub_resume,
+#endif
+};
+
+/*-------------------------------------------------------------------------*/
+
+static int ehci_hcd_au1xxx_drv_probe(struct device *dev)
+{
+        struct platform_device *pdev = to_platform_device(dev);
+        struct usb_hcd *hcd = NULL;
+        int ret;
+
+        pr_debug("In ehci_hcd_au1xxx_drv_probe\n");
+
+        if (usb_disabled())
+                return -ENODEV;
+
+        ret = usb_ehci_au1xxx_probe(&ehci_au1xxx_hc_driver, &hcd, pdev);
+        return ret;
+}
+
+static int ehci_hcd_au1xxx_drv_remove(struct device *dev)
+{
+        struct platform_device *pdev = to_platform_device(dev);
+        struct usb_hcd *hcd = dev_get_drvdata(dev);
+
+        usb_ehci_au1xxx_remove(hcd, pdev);
+        return 0;
+}
+
+ /*TBD*/
+/*static int ehci_hcd_au1xxx_drv_suspend(struct device *dev)
+{
+        struct platform_device *pdev = to_platform_device(dev);
+        struct usb_hcd *hcd = dev_get_drvdata(dev);
+
+        return 0;
+}
+static int ehci_hcd_au1xxx_drv_resume(struct device *dev)
+{
+        struct platform_device *pdev = to_platform_device(dev);
+        struct usb_hcd *hcd = dev_get_drvdata(dev);
+
+        return 0;
+}
+*/
+static struct device_driver ehci_hcd_au1xxx_driver = {
+        .name = "au1xxx-ehci",
+        .bus = &platform_bus_type,
+        .probe = ehci_hcd_au1xxx_drv_probe,
+        .remove = ehci_hcd_au1xxx_drv_remove,
+        /*.suspend      = ehci_hcd_au1xxx_drv_suspend, */
+        /*.resume       = ehci_hcd_au1xxx_drv_resume, */
+};
+
+static int __init ehci_hcd_au1xxx_init(void)
+{
+        pr_debug(DRIVER_INFO " (Au1xxx)\n");
+
+        return driver_register(&ehci_hcd_au1xxx_driver);
+}
+
+static void __exit ehci_hcd_au1xxx_cleanup(void)
+{
+        driver_unregister(&ehci_hcd_au1xxx_driver);
+}
+
+module_init(ehci_hcd_au1xxx_init);
+module_exit(ehci_hcd_au1xxx_cleanup);
diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c
new file mode 100644
index 000000000000..f985f121a245
--- /dev/null
+++ b/drivers/usb/host/ehci-fsl.c
@@ -0,0 +1,366 @@
+/*
+ * (C) Copyright David Brownell 2000-2002
+ * Copyright (c) 2005 MontaVista Software
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * Ported to 834x by Randy Vinson <rvinson@mvista.com> using code provided
+ * by Hunter Wu.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/fsl_devices.h>
+
+#include "ehci-fsl.h"
+
+/* FIXME: Power Managment is un-ported so temporarily disable it */
+#undef CONFIG_PM
+
+/* PCI-based HCs are common, but plenty of non-PCI HCs are used too */
+
+/* configure so an HC device and id are always provided */
+/* always called with process context; sleeping is OK */
+
+/**
+ * usb_hcd_fsl_probe - initialize FSL-based HCDs
+ * @drvier: Driver to be used for this HCD
+ * @pdev: USB Host Controller being probed
+ * Context: !in_interrupt()
+ *
+ * Allocates basic resources for this USB host controller.
+ *
+ */
+int usb_hcd_fsl_probe(const struct hc_driver *driver,
+                      struct platform_device *pdev)
+{
+        struct fsl_usb2_platform_data *pdata;
+        struct usb_hcd *hcd;
+        struct resource *res;
+        int irq;
+        int retval;
+        unsigned int temp;
+
+        pr_debug("initializing FSL-SOC USB Controller\n");
+
+        /* Need platform data for setup */
+        pdata = (struct fsl_usb2_platform_data *)pdev->dev.platform_data;
+        if (!pdata) {
+                dev_err(&pdev->dev,
+                        "No platform data for %s.\n", pdev->dev.bus_id);
+                return -ENODEV;
+        }
+
+        /*
+         * This is a host mode driver, verify that we're supposed to be
+         * in host mode.
+         */
+        if (!((pdata->operating_mode == FSL_USB2_DR_HOST) ||
+              (pdata->operating_mode == FSL_USB2_MPH_HOST))) {
+                dev_err(&pdev->dev,
+                        "Non Host Mode configured for %s. Wrong driver linked.\n",
+                        pdev->dev.bus_id);
+                return -ENODEV;
+        }
+
+        res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+        if (!res) {
+                dev_err(&pdev->dev,
+                        "Found HC with no IRQ. Check %s setup!\n",
+                        pdev->dev.bus_id);
+                return -ENODEV;
+        }
+        irq = res->start;
+
+        hcd = usb_create_hcd(driver, &pdev->dev, pdev->dev.bus_id);
+        if (!hcd) {
+                retval = -ENOMEM;
+                goto err1;
+        }
+
+        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        if (!res) {
+                dev_err(&pdev->dev,
+                        "Found HC with no register addr. Check %s setup!\n",
+                        pdev->dev.bus_id);
+                retval = -ENODEV;
+                goto err2;
+        }
+        hcd->rsrc_start = res->start;
+        hcd->rsrc_len = res->end - res->start + 1;
+        if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len,
+                                driver->description)) {
+                dev_dbg(&pdev->dev, "controller already in use\n");
+                retval = -EBUSY;
+                goto err2;
+        }
+        hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
+
+        if (hcd->regs == NULL) {
+                dev_dbg(&pdev->dev, "error mapping memory\n");
+                retval = -EFAULT;
+                goto err3;
+        }
+
+        /* Enable USB controller */
+        temp = in_be32(hcd->regs + 0x500);
+        out_be32(hcd->regs + 0x500, temp | 0x4);
+
+        /* Set to Host mode */
+        temp = in_le32(hcd->regs + 0x1a8);
+        out_le32(hcd->regs + 0x1a8, temp | 0x3);
+
+        retval = usb_add_hcd(hcd, irq, SA_SHIRQ);
+        if (retval != 0)
+                goto err4;
+        return retval;
+
+      err4:
+        iounmap(hcd->regs);
+      err3:
+        release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+      err2:
+        usb_put_hcd(hcd);
+      err1:
+        dev_err(&pdev->dev, "init %s fail, %d\n", pdev->dev.bus_id, retval);
+        return retval;
+}
+
+/* may be called without controller electrically present */
+/* may be called with controller, bus, and devices active */
+
+/**
+ * usb_hcd_fsl_remove - shutdown processing for FSL-based HCDs
+ * @dev: USB Host Controller being removed
+ * Context: !in_interrupt()
+ *
+ * Reverses the effect of usb_hcd_fsl_probe().
+ *
+ */
+void usb_hcd_fsl_remove(struct usb_hcd *hcd, struct platform_device *pdev)
+{
+        usb_remove_hcd(hcd);
+        iounmap(hcd->regs);
+        release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+        usb_put_hcd(hcd);
+}
+
+static void mpc83xx_setup_phy(struct ehci_hcd *ehci,
+                              enum fsl_usb2_phy_modes phy_mode,
+                              unsigned int port_offset)
+{
+        u32 portsc = 0;
+        switch (phy_mode) {
+        case FSL_USB2_PHY_ULPI:
+                portsc |= PORT_PTS_ULPI;
+                break;
+        case FSL_USB2_PHY_SERIAL:
+                portsc |= PORT_PTS_SERIAL;
+                break;
+        case FSL_USB2_PHY_UTMI_WIDE:
+                portsc |= PORT_PTS_PTW;
+                /* fall through */
+        case FSL_USB2_PHY_UTMI:
+                portsc |= PORT_PTS_UTMI;
+                break;
+        case FSL_USB2_PHY_NONE:
+                break;
+        }
+        writel(portsc, &ehci->regs->port_status[port_offset]);
+}
+
+static void mpc83xx_usb_setup(struct usb_hcd *hcd)
+{
+        struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+        struct fsl_usb2_platform_data *pdata;
+        void __iomem *non_ehci = hcd->regs;
+
+        pdata =
+            (struct fsl_usb2_platform_data *)hcd->self.controller->
+            platform_data;
+        /* Enable PHY interface in the control reg. */
+        out_be32(non_ehci + FSL_SOC_USB_CTRL, 0x00000004);
+        out_be32(non_ehci + FSL_SOC_USB_SNOOP1, 0x0000001b);
+
+        if (pdata->operating_mode == FSL_USB2_DR_HOST)
+                mpc83xx_setup_phy(ehci, pdata->phy_mode, 0);
+
+        if (pdata->operating_mode == FSL_USB2_MPH_HOST) {
+                unsigned int chip, rev, svr;
+
+                svr = mfspr(SPRN_SVR);
+                chip = svr >> 16;
+                rev = (svr >> 4) & 0xf;
+
+                /* Deal with USB Erratum #14 on MPC834x Rev 1.0 & 1.1 chips */
+                if ((rev == 1) && (chip >= 0x8050) && (chip <= 0x8055))
+                        ehci->has_fsl_port_bug = 1;
+
+                if (pdata->port_enables & FSL_USB2_PORT0_ENABLED)
+                        mpc83xx_setup_phy(ehci, pdata->phy_mode, 0);
+                if (pdata->port_enables & FSL_USB2_PORT1_ENABLED)
+                        mpc83xx_setup_phy(ehci, pdata->phy_mode, 1);
+        }
+
+        /* put controller in host mode. */
+        writel(0x00000003, non_ehci + FSL_SOC_USB_USBMODE);
+        out_be32(non_ehci + FSL_SOC_USB_PRICTRL, 0x0000000c);
+        out_be32(non_ehci + FSL_SOC_USB_AGECNTTHRSH, 0x00000040);
+        out_be32(non_ehci + FSL_SOC_USB_SICTRL, 0x00000001);
+}
+
+/* called after powerup, by probe or system-pm "wakeup" */
+static int ehci_fsl_reinit(struct ehci_hcd *ehci)
+{
+        mpc83xx_usb_setup(ehci_to_hcd(ehci));
+        ehci_port_power(ehci, 0);
+
+        return 0;
+}
+
+/* called during probe() after chip reset completes */
+static int ehci_fsl_setup(struct usb_hcd *hcd)
+{
+        struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+        int retval;
+
+        /* EHCI registers start at offset 0x100 */
+        ehci->caps = hcd->regs + 0x100;
+        ehci->regs = hcd->regs + 0x100 +
+            HC_LENGTH(readl(&ehci->caps->hc_capbase));
+        dbg_hcs_params(ehci, "reset");
+        dbg_hcc_params(ehci, "reset");
+
+        /* cache this readonly data; minimize chip reads */
+        ehci->hcs_params = readl(&ehci->caps->hcs_params);
+
+        retval = ehci_halt(ehci);
+        if (retval)
+                return retval;
+
+        /* data structure init */
+        retval = ehci_init(hcd);
+        if (retval)
+                return retval;
+
+        ehci->is_tdi_rh_tt = 1;
+
+        ehci->sbrn = 0x20;
+
+        ehci_reset(ehci);
+
+        retval = ehci_fsl_reinit(ehci);
+        return retval;
+}
+
+static const struct hc_driver ehci_fsl_hc_driver = {
+        .description = hcd_name,
+        .product_desc = "Freescale On-Chip EHCI Host Controller",
+        .hcd_priv_size = sizeof(struct ehci_hcd),
+
+        /*
+         * generic hardware linkage
+         */
+        .irq = ehci_irq,
+        .flags = HCD_USB2,
+
+        /*
+         * basic lifecycle operations
+         */
+        .reset = ehci_fsl_setup,
+        .start = ehci_run,
+#ifdef  CONFIG_PM
+        .suspend = ehci_bus_suspend,
+        .resume = ehci_bus_resume,
+#endif
+        .stop = ehci_stop,
+
+        /*
+         * managing i/o requests and associated device resources
+         */
+        .urb_enqueue = ehci_urb_enqueue,
+        .urb_dequeue = ehci_urb_dequeue,
+        .endpoint_disable = ehci_endpoint_disable,
+
+        /*
+         * scheduling support
+         */
+        .get_frame_number = ehci_get_frame,
+
+        /*
+         * root hub support
+         */
+        .hub_status_data = ehci_hub_status_data,
+        .hub_control = ehci_hub_control,
+        .bus_suspend = ehci_bus_suspend,
+        .bus_resume = ehci_bus_resume,
+};
+
+static int ehci_fsl_drv_probe(struct platform_device *pdev)
+{
+        if (usb_disabled())
+                return -ENODEV;
+
+        return usb_hcd_fsl_probe(&ehci_fsl_hc_driver, pdev);
+}
+
+static int ehci_fsl_drv_remove(struct platform_device *pdev)
+{
+        struct usb_hcd *hcd = platform_get_drvdata(pdev);
+
+        usb_hcd_fsl_remove(hcd, pdev);
+
+        return 0;
+}
+
+static struct platform_driver ehci_fsl_dr_driver = {
+        .probe = ehci_fsl_drv_probe,
+        .remove = ehci_fsl_drv_remove,
+        .driver = {
+                   .name = "fsl-usb2-dr",
+                   },
+};
+
+static struct platform_driver ehci_fsl_mph_driver = {
+        .probe = ehci_fsl_drv_probe,
+        .remove = ehci_fsl_drv_remove,
+        .driver = {
+                   .name = "fsl-usb2-mph",
+                   },
+};
+
+static int __init ehci_fsl_init(void)
+{
+        int retval;
+
+        pr_debug("%s: block sizes: qh %Zd qtd %Zd itd %Zd sitd %Zd\n",
+                 hcd_name,
+                 sizeof(struct ehci_qh), sizeof(struct ehci_qtd),
+                 sizeof(struct ehci_itd), sizeof(struct ehci_sitd));
+
+        retval = platform_driver_register(&ehci_fsl_dr_driver);
+        if (retval)
+                return retval;
+
+        return platform_driver_register(&ehci_fsl_mph_driver);
+}
+
+static void __exit ehci_fsl_cleanup(void)
+{
+        platform_driver_unregister(&ehci_fsl_mph_driver);
+        platform_driver_unregister(&ehci_fsl_dr_driver);
+}
+
+module_init(ehci_fsl_init);
+module_exit(ehci_fsl_cleanup);
diff --git a/drivers/usb/host/ehci-fsl.h b/drivers/usb/host/ehci-fsl.h
new file mode 100644
index 000000000000..caac0d1967d0
--- /dev/null
+++ b/drivers/usb/host/ehci-fsl.h
@@ -0,0 +1,37 @@
+/* Copyright (c) 2005 freescale semiconductor
+ * Copyright (c) 2005 MontaVista Software
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the  GNU General Public License along
+ * with this program; if not, write  to the Free Software Foundation, Inc.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#ifndef _EHCI_FSL_H
+#define _EHCI_FSL_H
+
+/* offsets for the non-ehci registers in the FSL SOC USB controller */
+#define FSL_SOC_USB_ULPIVP      0x170
+#define FSL_SOC_USB_PORTSC1     0x184
+#define PORT_PTS_MSK            (3<<30)
+#define PORT_PTS_UTMI           (0<<30)
+#define PORT_PTS_ULPI           (2<<30)
+#define PORT_PTS_SERIAL         (3<<30)
+#define PORT_PTS_PTW            (1<<28)
+#define FSL_SOC_USB_PORTSC2     0x188
+#define FSL_SOC_USB_USBMODE     0x1a8
+#define FSL_SOC_USB_SNOOP1      0x400   /* NOTE: big-endian */
+#define FSL_SOC_USB_SNOOP2      0x404   /* NOTE: big-endian */
+#define FSL_SOC_USB_AGECNTTHRSH 0x408   /* NOTE: big-endian */
+#define FSL_SOC_USB_SICTRL      0x40c   /* NOTE: big-endian */
+#define FSL_SOC_USB_PRICTRL     0x410   /* NOTE: big-endian */
+#define FSL_SOC_USB_CTRL        0x500   /* NOTE: big-endian */
+#endif                          /* _EHCI_FSL_H */
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 9dd3d14c64f3..79f2d8b9bfb6 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -889,8 +889,19 @@ MODULE_LICENSE ("GPL");
 
 #ifdef CONFIG_PCI
 #include "ehci-pci.c"
+#define EHCI_BUS_GLUED
 #endif
 
-#if !defined(CONFIG_PCI)
+#ifdef CONFIG_PPC_83xx
+#include "ehci-fsl.c"
+#define EHCI_BUS_GLUED
+#endif
+
+#ifdef CONFIG_SOC_AU1X00
+#include "ehci-au1xxx.c"
+#define EHCI_BUS_GLUED
+#endif
+
+#ifndef EHCI_BUS_GLUED
 #error "missing bus glue for ehci-hcd"
 #endif
diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c
index 69b0b9be7a64..d03e3cad5ca8 100644
--- a/drivers/usb/host/ehci-hub.c
+++ b/drivers/usb/host/ehci-hub.c
@@ -359,6 +359,8 @@ static int ehci_hub_control (
                 case USB_PORT_FEAT_SUSPEND:
                         if (temp & PORT_RESET)
                                 goto error;
+                        if (ehci->no_selective_suspend)
+                                break;
                         if (temp & PORT_SUSPEND) {
                                 if ((temp & PORT_PE) == 0)
                                         goto error;
@@ -514,6 +516,8 @@ static int ehci_hub_control (
                 temp &= ~PORT_RWC_BITS;
                 switch (wValue) {
                 case USB_PORT_FEAT_SUSPEND:
+                        if (ehci->no_selective_suspend)
+                                break;
                         if ((temp & PORT_PE) == 0
                                         || (temp & PORT_RESET) != 0)
                                 goto error;
diff --git a/drivers/usb/host/ehci-mem.c b/drivers/usb/host/ehci-mem.c
index 91c2ab43cbcc..766061e0260a 100644
--- a/drivers/usb/host/ehci-mem.c
+++ b/drivers/usb/host/ehci-mem.c
@@ -75,7 +75,6 @@ static void qh_destroy (struct kref *kref)
         }
         if (qh->dummy)
                 ehci_qtd_free (ehci, qh->dummy);
-        usb_put_dev (qh->dev);
         dma_pool_free (ehci->qh_pool, qh, qh->qh_dma);
 }
 
@@ -221,13 +220,9 @@ static int ehci_mem_init (struct ehci_hcd *ehci, gfp_t flags)
                 ehci->periodic [i] = EHCI_LIST_END;
 
         /* software shadow of hardware table */
-        ehci->pshadow = kmalloc (ehci->periodic_size * sizeof (void *), flags);
-        if (ehci->pshadow == NULL) {
-                goto fail;
-        }
-        memset (ehci->pshadow, 0, ehci->periodic_size * sizeof (void *));
-
-        return 0;
+        ehci->pshadow = kcalloc(ehci->periodic_size, sizeof(void *), flags);
+        if (ehci->pshadow != NULL)
+                return 0;
 
 fail:
         ehci_dbg (ehci, "couldn't init memory\n");
diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c
index 3a6687df5594..1e03f1a5a5fd 100644
--- a/drivers/usb/host/ehci-pci.c
+++ b/drivers/usb/host/ehci-pci.c
@@ -106,11 +106,11 @@ static int ehci_pci_setup(struct usb_hcd *hcd)
                 }
                 break;
         case PCI_VENDOR_ID_NVIDIA:
+                switch (pdev->device) {
                 /* NVidia reports that certain chips don't handle
                  * QH, ITD, or SITD addresses above 2GB.  (But TD,
                  * data buffer, and periodic schedule are normal.)
                  */
-                switch (pdev->device) {
                 case 0x003c:    /* MCP04 */
                 case 0x005b:    /* CK804 */
                 case 0x00d8:    /* CK8 */
@@ -120,6 +120,14 @@ static int ehci_pci_setup(struct usb_hcd *hcd)
                                 ehci_warn(ehci, "can't enable NVidia "
                                         "workaround for >2GB RAM\n");
                         break;
+                /* Some NForce2 chips have problems with selective suspend;
+                 * fixed in newer silicon.
+                 */
+                case 0x0068:
+                        pci_read_config_dword(pdev, PCI_REVISION_ID, &temp);
+                        if ((temp & 0xff) < 0xa4)
+                                ehci->no_selective_suspend = 1;
+                        break;
                 }
                 break;
         }
@@ -163,6 +171,21 @@ static int ehci_pci_setup(struct usb_hcd *hcd)
                         device_init_wakeup(&pdev->dev, 1);
         }
 
+#ifdef  CONFIG_USB_SUSPEND
+        /* REVISIT: the controller works fine for wakeup iff the root hub
+         * itself is "globally" suspended, but usbcore currently doesn't
+         * understand such things.
+         *
+         * System suspend currently expects to be able to suspend the entire
+         * device tree, device-at-a-time.  If we failed selective suspend
+         * reports, system suspend would fail; so the root hub code must claim
+         * success.  That's lying to usbcore, and it matters for for runtime
+         * PM scenarios with selective suspend and remote wakeup...
+         */
+        if (ehci->no_selective_suspend && device_can_wakeup(&pdev->dev))
+                ehci_warn(ehci, "selective suspend/wakeup unavailable\n");
+#endif
+
         retval = ehci_pci_reinit(ehci, pdev);
 done:
         return retval;
diff --git a/drivers/usb/host/ehci-q.c b/drivers/usb/host/ehci-q.c
index 9b13bf2fa98d..e469221e7ec3 100644
--- a/drivers/usb/host/ehci-q.c
+++ b/drivers/usb/host/ehci-q.c
@@ -702,7 +702,7 @@ qh_make (
         }
 
         /* support for tt scheduling, and access to toggles */
-        qh->dev = usb_get_dev (urb->dev);
+        qh->dev = urb->dev;
 
         /* using TT? */
         switch (urb->dev->speed) {
@@ -721,7 +721,14 @@ qh_make (
                 info1 |= maxp << 16;
 
                 info2 |= (EHCI_TUNE_MULT_TT << 30);
-                info2 |= urb->dev->ttport << 23;
+
+                /* Some Freescale processors have an erratum in which the
+                 * port number in the queue head was 0..N-1 instead of 1..N.
+                 */
+                if (ehci_has_fsl_portno_bug(ehci))
+                        info2 |= (urb->dev->ttport-1) << 23;
+                else
+                        info2 |= urb->dev->ttport << 23;
 
                 /* set the address of the TT; for TDI's integrated
                  * root hub tt, leave it zeroed.
@@ -1015,12 +1022,14 @@ static void start_unlink_async (struct ehci_hcd *ehci, struct ehci_qh *qh)
         /* stop async schedule right now? */
         if (unlikely (qh == ehci->async)) {
                 /* can't get here without STS_ASS set */
-                if (ehci_to_hcd(ehci)->state != HC_STATE_HALT) {
+                if (ehci_to_hcd(ehci)->state != HC_STATE_HALT
+                                && !ehci->reclaim) {
+                        /* ... and CMD_IAAD clear */
                         writel (cmd & ~CMD_ASE, &ehci->regs->command);
                         wmb ();
                         // handshake later, if we need to
+                        timer_action_done (ehci, TIMER_ASYNC_OFF);
                 }
-                timer_action_done (ehci, TIMER_ASYNC_OFF);
                 return;
         } 
 
diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c
index ebcca9700671..5871944e6145 100644
--- a/drivers/usb/host/ehci-sched.c
+++ b/drivers/usb/host/ehci-sched.c
@@ -707,6 +707,7 @@ iso_stream_init (
         } else {
                 u32             addr;
                 int             think_time;
+                int             hs_transfers;
 
                 addr = dev->ttport << 24;
                 if (!ehci_is_TDI(ehci)
@@ -719,6 +720,7 @@ iso_stream_init (
                 think_time = dev->tt ? dev->tt->think_time : 0;
                 stream->tt_usecs = NS_TO_US (think_time + usb_calc_bus_time (
                                 dev->speed, is_input, 1, maxp));
+                hs_transfers = max (1u, (maxp + 187) / 188);
                 if (is_input) {
                         u32     tmp;
 
@@ -727,12 +729,11 @@ iso_stream_init (
                         stream->usecs = HS_USECS_ISO (1);
                         stream->raw_mask = 1;
 
-                        /* pessimistic c-mask */
-                        tmp = usb_calc_bus_time (USB_SPEED_FULL, 1, 0, maxp)
-                                        / (125 * 1000);
-                        stream->raw_mask |= 3 << (tmp + 9);
+                        /* c-mask as specified in USB 2.0 11.18.4 3.c */
+                        tmp = (1 << (hs_transfers + 2)) - 1;
+                        stream->raw_mask |= tmp << (8 + 2);
                 } else
-                        stream->raw_mask = smask_out [maxp / 188];
+                        stream->raw_mask = smask_out [hs_transfers - 1];
                 bandwidth = stream->usecs + stream->c_usecs;
                 bandwidth /= 1 << (interval + 2);
 
@@ -863,9 +864,8 @@ iso_sched_alloc (unsigned packets, gfp_t mem_flags)
         int                     size = sizeof *iso_sched;
 
         size += packets * sizeof (struct ehci_iso_packet);
-        iso_sched = kmalloc (size, mem_flags);
+        iso_sched = kzalloc(size, mem_flags);
         if (likely (iso_sched != NULL)) {
-                memset(iso_sched, 0, size);
                 INIT_LIST_HEAD (&iso_sched->td_list);
         }
         return iso_sched;
@@ -1398,7 +1398,7 @@ itd_complete (
          */
 
         /* give urb back to the driver ... can be out-of-order */
-        dev = usb_get_dev (urb->dev);
+        dev = urb->dev;
         ehci_urb_done (ehci, urb, regs);
         urb = NULL;
 
@@ -1417,7 +1417,6 @@ itd_complete (
                         (stream->bEndpointAddress & USB_DIR_IN) ? "in" : "out");
         }
         iso_stream_put (ehci, stream);
-        usb_put_dev (dev);
 
         return 1;
 }
@@ -1764,7 +1763,7 @@ sitd_complete (
          */
 
         /* give urb back to the driver */
-        dev = usb_get_dev (urb->dev);
+        dev = urb->dev;
         ehci_urb_done (ehci, urb, regs);
         urb = NULL;
 
@@ -1783,7 +1782,6 @@ sitd_complete (
                         (stream->bEndpointAddress & USB_DIR_IN) ? "in" : "out");
         }
         iso_stream_put (ehci, stream);
-        usb_put_dev (dev);
 
         return 1;
 }
diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
index 18e257c2bdb5..679c1cdcc915 100644
--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -88,7 +88,12 @@ struct ehci_hcd {			/* one per controller */
         unsigned long           next_statechange;
         u32                     command;
 
+        /* SILICON QUIRKS */
         unsigned                is_tdi_rh_tt:1; /* TDI roothub with TT */
+        unsigned                no_selective_suspend:1;
+        unsigned                has_fsl_port_bug:1; /* FreeScale */
+
+        u8                      sbrn;           /* packed release number */
 
         /* irq statistics */
 #ifdef EHCI_STATS
@@ -97,7 +102,6 @@ struct ehci_hcd {			/* one per controller */
 #else
 #       define COUNT(x) do {} while (0)
 #endif
-        u8                      sbrn;           /* packed release number */
 };
 
 /* convert between an HCD pointer and the corresponding EHCI_HCD */ 
@@ -638,6 +642,18 @@ ehci_port_speed(struct ehci_hcd *ehci, unsigned int portsc)
 
 /*-------------------------------------------------------------------------*/
 
+#ifdef CONFIG_PPC_83xx
+/* Some Freescale processors have an erratum in which the TT
+ * port number in the queue head was 0..N-1 instead of 1..N.
+ */
+#define ehci_has_fsl_portno_bug(e)              ((e)->has_fsl_port_bug)
+#else
+#define ehci_has_fsl_portno_bug(e)              (0)
+#endif
+
+
+/*-------------------------------------------------------------------------*/
+
 #ifndef DEBUG
 #define STUB_DEBUG_FILES
 #endif  /* DEBUG */
diff --git a/drivers/usb/host/hc_crisv10.c b/drivers/usb/host/hc_crisv10.c
index 641268d7e6f3..2fe7fd19437b 100644
--- a/drivers/usb/host/hc_crisv10.c
+++ b/drivers/usb/host/hc_crisv10.c
@@ -2137,10 +2137,9 @@ static int etrax_usb_submit_bulk_urb(struct urb *urb)
         urb->status = -EINPROGRESS;
 
         /* Setup the hcpriv data. */
-        urb_priv = kmalloc(sizeof(etrax_urb_priv_t), KMALLOC_FLAG);
+        urb_priv = kzalloc(sizeof(etrax_urb_priv_t), KMALLOC_FLAG);
         assert(urb_priv != NULL);
         /* This sets rx_offset to 0. */
-        memset(urb_priv, 0, sizeof(etrax_urb_priv_t));
         urb_priv->urb_state = NOT_STARTED;
         urb->hcpriv = urb_priv;
 
@@ -2475,10 +2474,9 @@ static int etrax_usb_submit_ctrl_urb(struct urb *urb)
         urb->status = -EINPROGRESS;
 
         /* Setup the hcpriv data. */
-        urb_priv = kmalloc(sizeof(etrax_urb_priv_t), KMALLOC_FLAG);
+        urb_priv = kzalloc(sizeof(etrax_urb_priv_t), KMALLOC_FLAG);
         assert(urb_priv != NULL);
         /* This sets rx_offset to 0. */
-        memset(urb_priv, 0, sizeof(etrax_urb_priv_t));
         urb_priv->urb_state = NOT_STARTED;
         urb->hcpriv = urb_priv;
 
@@ -2767,9 +2765,8 @@ static void etrax_usb_add_to_intr_sb_list(struct urb *urb, int epid)
         maxlen = usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe));
         interval = urb->interval;
 
-        urb_priv = kmalloc(sizeof(etrax_urb_priv_t), KMALLOC_FLAG);
+        urb_priv = kzalloc(sizeof(etrax_urb_priv_t), KMALLOC_FLAG);
         assert(urb_priv != NULL);
-        memset(urb_priv, 0, sizeof(etrax_urb_priv_t));
         urb->hcpriv = urb_priv;
 
         first_ep = &TxIntrEPList[0];
@@ -2997,9 +2994,8 @@ static void etrax_usb_add_to_isoc_sb_list(struct urb *urb, int epid)
 
         prev_sb_desc = next_sb_desc = temp_sb_desc = NULL;
 
-        urb_priv = kmalloc(sizeof(etrax_urb_priv_t), GFP_ATOMIC);
+        urb_priv = kzalloc(sizeof(etrax_urb_priv_t), GFP_ATOMIC);
         assert(urb_priv != NULL);
-        memset(urb_priv, 0, sizeof(etrax_urb_priv_t));
 
         urb->hcpriv = urb_priv;
         urb_priv->epid = epid;
diff --git a/drivers/usb/host/isp116x-hcd.c b/drivers/usb/host/isp116x-hcd.c
index 972ce04889f8..e99210b7909b 100644
--- a/drivers/usb/host/isp116x-hcd.c
+++ b/drivers/usb/host/isp116x-hcd.c
@@ -724,7 +724,7 @@ static int isp116x_urb_enqueue(struct usb_hcd *hcd,
                 ep = hep->hcpriv;
         else {
                 INIT_LIST_HEAD(&ep->schedule);
-                ep->udev = usb_get_dev(udev);
+                ep->udev = udev;
                 ep->epnum = epnum;
                 ep->maxpacket = usb_maxpacket(udev, urb->pipe, is_out);
                 usb_settoggle(udev, epnum, is_out, 0);
@@ -891,7 +891,6 @@ static void isp116x_endpoint_disable(struct usb_hcd *hcd,
         if (!list_empty(&hep->urb_list))
                 WARN("ep %p not empty?\n", ep);
 
-        usb_put_dev(ep->udev);
         kfree(ep);
         hep->hcpriv = NULL;
 }
@@ -1553,7 +1552,7 @@ static struct hc_driver isp116x_hc_driver = {
 
 /*----------------------------------------------------------------*/
 
-static int __init_or_module isp116x_remove(struct platform_device *pdev)
+static int isp116x_remove(struct platform_device *pdev)
 {
         struct usb_hcd *hcd = platform_get_drvdata(pdev);
         struct isp116x *isp116x;
diff --git a/drivers/usb/host/ohci-at91.c b/drivers/usb/host/ohci-at91.c
new file mode 100644
index 000000000000..980030d684d5
--- /dev/null
+++ b/drivers/usb/host/ohci-at91.c
@@ -0,0 +1,306 @@
+/*
+ * OHCI HCD (Host Controller Driver) for USB.
+ *
+ *  Copyright (C) 2004 SAN People (Pty) Ltd.
+ *  Copyright (C) 2005 Thibaut VARENE <varenet@parisc-linux.org>
+ *
+ * AT91RM9200 Bus Glue
+ *
+ * Based on fragments of 2.4 driver by Rick Bronson.
+ * Based on ohci-omap.c
+ *
+ * This file is licenced under the GPL.
+ */
+
+#include <linux/clk.h>
+#include <linux/platform_device.h>
+
+#include <asm/mach-types.h>
+#include <asm/hardware.h>
+#include <asm/arch/board.h>
+
+#ifndef CONFIG_ARCH_AT91RM9200
+#error "This file is AT91RM9200 bus glue.  CONFIG_ARCH_AT91RM9200 must be defined."
+#endif
+
+/* interface and function clocks */
+static struct clk *iclk, *fclk;
+
+extern int usb_disabled(void);
+
+/*-------------------------------------------------------------------------*/
+
+static void at91_start_hc(struct platform_device *pdev)
+{
+        struct usb_hcd *hcd = platform_get_drvdata(pdev);
+        struct ohci_regs __iomem *regs = hcd->regs;
+
+        dev_dbg(&pdev->dev, "starting AT91RM9200 OHCI USB Controller\n");
+
+        /*
+         * Start the USB clocks.
+         */
+        clk_enable(iclk);
+        clk_enable(fclk);
+
+        /*
+         * The USB host controller must remain in reset.
+         */
+        writel(0, &regs->control);
+}
+
+static void at91_stop_hc(struct platform_device *pdev)
+{
+        struct usb_hcd *hcd = platform_get_drvdata(pdev);
+        struct ohci_regs __iomem *regs = hcd->regs;
+
+        dev_dbg(&pdev->dev, "stopping AT91RM9200 OHCI USB Controller\n");
+
+        /*
+         * Put the USB host controller into reset.
+         */
+        writel(0, &regs->control);
+
+        /*
+         * Stop the USB clocks.
+         */
+        clk_disable(fclk);
+        clk_disable(iclk);
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+static int usb_hcd_at91_remove (struct usb_hcd *, struct platform_device *);
+
+/* configure so an HC device and id are always provided */
+/* always called with process context; sleeping is OK */
+
+
+/**
+ * usb_hcd_at91_probe - initialize AT91RM9200-based HCDs
+ * Context: !in_interrupt()
+ *
+ * Allocates basic resources for this USB host controller, and
+ * then invokes the start() method for the HCD associated with it
+ * through the hotplug entry's driver_data.
+ *
+ * Store this function in the HCD's struct pci_driver as probe().
+ */
+int usb_hcd_at91_probe (const struct hc_driver *driver, struct platform_device *pdev)
+{
+        int retval;
+        struct usb_hcd *hcd = NULL;
+
+        if (pdev->num_resources != 2) {
+                pr_debug("hcd probe: invalid num_resources");
+                return -ENODEV;
+        }
+
+        if ((pdev->resource[0].flags != IORESOURCE_MEM) || (pdev->resource[1].flags != IORESOURCE_IRQ)) {
+                pr_debug("hcd probe: invalid resource type\n");
+                return -ENODEV;
+        }
+
+        hcd = usb_create_hcd(driver, &pdev->dev, "at91rm9200");
+        if (!hcd)
+                return -ENOMEM;
+        hcd->rsrc_start = pdev->resource[0].start;
+        hcd->rsrc_len = pdev->resource[0].end - pdev->resource[0].start + 1;
+
+        if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
+                pr_debug("request_mem_region failed\n");
+                retval = -EBUSY;
+                goto err1;
+        }
+
+        hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
+        if (!hcd->regs) {
+                pr_debug("ioremap failed\n");
+                retval = -EIO;
+                goto err2;
+        }
+
+        iclk = clk_get(&pdev->dev, "ohci_clk");
+        fclk = clk_get(&pdev->dev, "uhpck");
+
+        at91_start_hc(pdev);
+        ohci_hcd_init(hcd_to_ohci(hcd));
+
+        retval = usb_add_hcd(hcd, pdev->resource[1].start, SA_INTERRUPT);
+        if (retval == 0)
+                return retval;
+
+        /* Error handling */
+        at91_stop_hc(pdev);
+
+        clk_put(fclk);
+        clk_put(iclk);
+
+        iounmap(hcd->regs);
+
+ err2:
+        release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+
+ err1:
+        usb_put_hcd(hcd);
+        return retval;
+}
+
+
+/* may be called without controller electrically present */
+/* may be called with controller, bus, and devices active */
+
+/**
+ * usb_hcd_at91_remove - shutdown processing for AT91RM9200-based HCDs
+ * @dev: USB Host Controller being removed
+ * Context: !in_interrupt()
+ *
+ * Reverses the effect of usb_hcd_at91_probe(), first invoking
+ * the HCD's stop() method.  It is always called from a thread
+ * context, normally "rmmod", "apmd", or something similar.
+ *
+ */
+static int usb_hcd_at91_remove (struct usb_hcd *hcd, struct platform_device *pdev)
+{
+        usb_remove_hcd(hcd);
+        at91_stop_hc(pdev);
+        iounmap(hcd->regs);
+        release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+
+        clk_put(fclk);
+        clk_put(iclk);
+        fclk = iclk = NULL;
+
+        dev_set_drvdata(&pdev->dev, NULL);
+        return 0;
+}
+
+/*-------------------------------------------------------------------------*/
+
+static int __devinit
+ohci_at91_start (struct usb_hcd *hcd)
+{
+//      struct at91_ohci_data   *board = hcd->self.controller->platform_data;
+        struct ohci_hcd         *ohci = hcd_to_ohci (hcd);
+        int                     ret;
+
+        if ((ret = ohci_init(ohci)) < 0)
+                return ret;
+
+        if ((ret = ohci_run(ohci)) < 0) {
+                err("can't start %s", hcd->self.bus_name);
+                ohci_stop(hcd);
+                return ret;
+        }
+//      hcd->self.root_hub->maxchild = board->ports;
+        return 0;
+}
+
+/*-------------------------------------------------------------------------*/
+
+static const struct hc_driver ohci_at91_hc_driver = {
+        .description =          hcd_name,
+        .product_desc =         "AT91RM9200 OHCI",
+        .hcd_priv_size =        sizeof(struct ohci_hcd),
+
+        /*
+         * generic hardware linkage
+         */
+        .irq =                  ohci_irq,
+        .flags =                HCD_USB11 | HCD_MEMORY,
+
+        /*
+         * basic lifecycle operations
+         */
+        .start =                ohci_at91_start,
+        .stop =                 ohci_stop,
+
+        /*
+         * managing i/o requests and associated device resources
+         */
+        .urb_enqueue =          ohci_urb_enqueue,
+        .urb_dequeue =          ohci_urb_dequeue,
+        .endpoint_disable =     ohci_endpoint_disable,
+
+        /*
+         * scheduling support
+         */
+        .get_frame_number =     ohci_get_frame,
+
+        /*
+         * root hub support
+         */
+        .hub_status_data =      ohci_hub_status_data,
+        .hub_control =          ohci_hub_control,
+
+#ifdef CONFIG_PM
+        .hub_suspend =          ohci_hub_suspend,
+        .hub_resume =           ohci_hub_resume,
+#endif
+        .start_port_reset =     ohci_start_port_reset,
+};
+
+/*-------------------------------------------------------------------------*/
+
+static int ohci_hcd_at91_drv_probe(struct platform_device *dev)
+{
+        return usb_hcd_at91_probe(&ohci_at91_hc_driver, dev);
+}
+
+static int ohci_hcd_at91_drv_remove(struct platform_device *dev)
+{
+        return usb_hcd_at91_remove(platform_get_drvdata(dev), dev);
+}
+
+#ifdef CONFIG_PM
+static int ohci_hcd_at91_drv_suspend(struct platform_device *dev, u32 state, u32 level)
+{
+        printk("%s(%s:%d): not implemented yet\n",
+                __func__, __FILE__, __LINE__);
+
+        clk_disable(fclk);
+
+        return 0;
+}
+
+static int ohci_hcd_at91_drv_resume(struct platform_device *dev, u32 state)
+{
+        printk("%s(%s:%d): not implemented yet\n",
+                __func__, __FILE__, __LINE__);
+
+        clk_enable(fclk);
+
+        return 0;
+}
+#else
+#define ohci_hcd_at91_drv_suspend NULL
+#define ohci_hcd_at91_drv_resume  NULL
+#endif
+
+static struct platform_driver ohci_hcd_at91_driver = {
+        .probe          = ohci_hcd_at91_drv_probe,
+        .remove         = ohci_hcd_at91_drv_remove,
+        .suspend        = ohci_hcd_at91_drv_suspend,
+        .resume         = ohci_hcd_at91_drv_resume,
+        .driver         = {
+                .name   = "at91rm9200-ohci",
+                .owner  = THIS_MODULE,
+        },
+};
+
+static int __init ohci_hcd_at91_init (void)
+{
+        if (usb_disabled())
+                return -ENODEV;
+
+        return platform_driver_register(&ohci_hcd_at91_driver);
+}
+
+static void __exit ohci_hcd_at91_cleanup (void)
+{
+        platform_driver_unregister(&ohci_hcd_at91_driver);
+}
+
+module_init (ohci_hcd_at91_init);
+module_exit (ohci_hcd_at91_cleanup);
diff --git a/drivers/usb/host/ohci-au1xxx.c b/drivers/usb/host/ohci-au1xxx.c
index db280ca7b7a0..a1c8b3b2fcc7 100644
--- a/drivers/usb/host/ohci-au1xxx.c
+++ b/drivers/usb/host/ohci-au1xxx.c
@@ -23,6 +23,8 @@
 
 #include <asm/mach-au1x00/au1000.h>
 
+#ifndef CONFIG_SOC_AU1200
+
 #define USBH_ENABLE_BE (1<<0)
 #define USBH_ENABLE_C  (1<<1)
 #define USBH_ENABLE_E  (1<<2)
@@ -37,21 +39,68 @@
 #error not byte order defined
 #endif
 
+#else   /* Au1200 */
+
+#define USB_HOST_CONFIG    (USB_MSR_BASE + USB_MSR_MCFG)
+#define USB_MCFG_PFEN     (1<<31)
+#define USB_MCFG_RDCOMB   (1<<30)
+#define USB_MCFG_SSDEN    (1<<23)
+#define USB_MCFG_OHCCLKEN (1<<16)
+#define USB_MCFG_UCAM     (1<<7)
+#define USB_MCFG_OBMEN    (1<<1)
+#define USB_MCFG_OMEMEN   (1<<0)
+
+#define USBH_ENABLE_CE    USB_MCFG_OHCCLKEN
+#ifdef CONFIG_DMA_COHERENT
+#define USBH_ENABLE_INIT  (USB_MCFG_OHCCLKEN \
+                         | USB_MCFG_PFEN | USB_MCFG_RDCOMB \
+                         | USB_MCFG_SSDEN | USB_MCFG_UCAM \
+                         | USB_MCFG_OBMEN | USB_MCFG_OMEMEN)
+#else
+#define USBH_ENABLE_INIT  (USB_MCFG_OHCCLKEN \
+                         | USB_MCFG_PFEN | USB_MCFG_RDCOMB \
+                         | USB_MCFG_SSDEN \
+                         | USB_MCFG_OBMEN | USB_MCFG_OMEMEN)
+#endif
+#define USBH_DISABLE      (USB_MCFG_OBMEN | USB_MCFG_OMEMEN)
+
+#endif  /* Au1200 */
+
 extern int usb_disabled(void);
 
 /*-------------------------------------------------------------------------*/
 
-static void au1xxx_start_hc(struct platform_device *dev)
+static void au1xxx_start_ohc(struct platform_device *dev)
 {
         printk(KERN_DEBUG __FILE__
                 ": starting Au1xxx OHCI USB Controller\n");
 
         /* enable host controller */
+
+#ifndef CONFIG_SOC_AU1200
+
         au_writel(USBH_ENABLE_CE, USB_HOST_CONFIG);
         udelay(1000);
         au_writel(USBH_ENABLE_INIT, USB_HOST_CONFIG);
         udelay(1000);
 
+#else   /* Au1200 */
+
+        /* write HW defaults again in case Yamon cleared them */
+        if (au_readl(USB_HOST_CONFIG) == 0) {
+                au_writel(0x00d02000, USB_HOST_CONFIG);
+                au_readl(USB_HOST_CONFIG);
+                udelay(1000);
+        }
+        au_writel(USBH_ENABLE_CE | au_readl(USB_HOST_CONFIG), USB_HOST_CONFIG);
+        au_readl(USB_HOST_CONFIG);
+        udelay(1000);
+        au_writel(USBH_ENABLE_INIT | au_readl(USB_HOST_CONFIG), USB_HOST_CONFIG);
+        au_readl(USB_HOST_CONFIG);
+        udelay(1000);
+
+#endif  /* Au1200 */
+
         /* wait for reset complete (read register twice; see au1500 errata) */
         while (au_readl(USB_HOST_CONFIG),
                 !(au_readl(USB_HOST_CONFIG) & USBH_ENABLE_RD))
@@ -61,13 +110,25 @@ static void au1xxx_start_hc(struct platform_device *dev)
         ": Clock to USB host has been enabled \n");
 }
 
-static void au1xxx_stop_hc(struct platform_device *dev)
+static void au1xxx_stop_ohc(struct platform_device *dev)
 {
         printk(KERN_DEBUG __FILE__
                ": stopping Au1xxx OHCI USB Controller\n");
 
+#ifndef CONFIG_SOC_AU1200
+
         /* Disable clock */
         au_writel(au_readl(USB_HOST_CONFIG) & ~USBH_ENABLE_CE, USB_HOST_CONFIG);
+
+#else   /* Au1200 */
+
+        /* Disable mem */
+        au_writel(~USBH_DISABLE & au_readl(USB_HOST_CONFIG), USB_HOST_CONFIG);
+        udelay(1000);
+        /* Disable clock */
+        au_writel(~USBH_ENABLE_CE & au_readl(USB_HOST_CONFIG), USB_HOST_CONFIG);
+        au_readl(USB_HOST_CONFIG);
+#endif  /* Au1200 */
 }
 
 
@@ -78,7 +139,7 @@ static void au1xxx_stop_hc(struct platform_device *dev)
 
 
 /**
- * usb_hcd_au1xxx_probe - initialize Au1xxx-based HCDs
+ * usb_ohci_au1xxx_probe - initialize Au1xxx-based HCDs
  * Context: !in_interrupt()
  *
  * Allocates basic resources for this USB host controller, and
@@ -86,14 +147,25 @@ static void au1xxx_stop_hc(struct platform_device *dev)
  * through the hotplug entry's driver_data.
  *
  */
-int usb_hcd_au1xxx_probe (const struct hc_driver *driver,
+static int usb_ohci_au1xxx_probe(const struct hc_driver *driver,
                           struct platform_device *dev)
 {
         int retval;
         struct usb_hcd *hcd;
 
-        if(dev->resource[1].flags != IORESOURCE_IRQ) {
-                pr_debug ("resource[1] is not IORESOURCE_IRQ");
+#if defined(CONFIG_SOC_AU1200) && defined(CONFIG_DMA_COHERENT)
+        /* Au1200 AB USB does not support coherent memory */
+        if (!(read_c0_prid() & 0xff)) {
+                pr_info("%s: this is chip revision AB !!\n",
+                        dev->dev.name);
+                pr_info("%s: update your board or re-configure the kernel\n",
+                        dev->dev.name);
+                return -ENODEV;
+        }
+#endif
+
+        if (dev->resource[1].flags != IORESOURCE_IRQ) {
+                pr_debug("resource[1] is not IORESOURCE_IRQ\n");
                 return -ENOMEM;
         }
 
@@ -104,26 +176,26 @@ int usb_hcd_au1xxx_probe (const struct hc_driver *driver,
         hcd->rsrc_len = dev->resource[0].end - dev->resource[0].start + 1;
 
         if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
-                pr_debug("request_mem_region failed");
+                pr_debug("request_mem_region failed\n");
                 retval = -EBUSY;
                 goto err1;
         }
 
         hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
         if (!hcd->regs) {
-                pr_debug("ioremap failed");
+                pr_debug("ioremap failed\n");
                 retval = -ENOMEM;
                 goto err2;
         }
 
-        au1xxx_start_hc(dev);
+        au1xxx_start_ohc(dev);
         ohci_hcd_init(hcd_to_ohci(hcd));
 
-        retval = usb_add_hcd(hcd, dev->resource[1].start, SA_INTERRUPT);
+        retval = usb_add_hcd(hcd, dev->resource[1].start, SA_INTERRUPT | SA_SHIRQ);
         if (retval == 0)
                 return retval;
 
-        au1xxx_stop_hc(dev);
+        au1xxx_stop_ohc(dev);
         iounmap(hcd->regs);
  err2:
         release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
@@ -146,10 +218,10 @@ int usb_hcd_au1xxx_probe (const struct hc_driver *driver,
  * context, normally "rmmod", "apmd", or something similar.
  *
  */
-void usb_hcd_au1xxx_remove (struct usb_hcd *hcd, struct platform_device *dev)
+static void usb_ohci_au1xxx_remove(struct usb_hcd *hcd, struct platform_device *dev)
 {
         usb_remove_hcd(hcd);
-        au1xxx_stop_hc(dev);
+        au1xxx_stop_ohc(dev);
         iounmap(hcd->regs);
         release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
         usb_put_hcd(hcd);
@@ -235,7 +307,7 @@ static int ohci_hcd_au1xxx_drv_probe(struct platform_device *pdev)
         if (usb_disabled())
                 return -ENODEV;
 
-        ret = usb_hcd_au1xxx_probe(&ohci_au1xxx_hc_driver, pdev);
+        ret = usb_ohci_au1xxx_probe(&ohci_au1xxx_hc_driver, pdev);
         return ret;
 }
 
@@ -243,7 +315,7 @@ static int ohci_hcd_au1xxx_drv_remove(struct platform_device *pdev)
 {
         struct usb_hcd *hcd = platform_get_drvdata(pdev);
 
-        usb_hcd_au1xxx_remove(hcd, pdev);
+        usb_ohci_au1xxx_remove(hcd, pdev);
         return 0;
 }
         /*TBD*/
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index a4b12404ae08..544f7589912f 100644
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -443,11 +443,16 @@ ohci_reboot (struct notifier_block *block, unsigned long code, void *null)
 static int ohci_init (struct ohci_hcd *ohci)
 {
         int ret;
+        struct usb_hcd *hcd = ohci_to_hcd(ohci);
 
         disable (ohci);
-        ohci->regs = ohci_to_hcd(ohci)->regs;
+        ohci->regs = hcd->regs;
         ohci->next_statechange = jiffies;
 
+        /* REVISIT this BIOS handshake is now moved into PCI "quirks", and
+         * was never needed for most non-PCI systems ... remove the code?
+         */
+
 #ifndef IR_DISABLE
         /* SMM owns the HC?  not for long! */
         if (!no_handshake && ohci_readl (ohci,
@@ -478,8 +483,10 @@ static int ohci_init (struct ohci_hcd *ohci)
 
         /* Disable HC interrupts */
         ohci_writel (ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable);
-        // flush the writes
-        (void) ohci_readl (ohci, &ohci->regs->control);
+
+        /* flush the writes, and save key bits like RWC */
+        if (ohci_readl (ohci, &ohci->regs->control) & OHCI_CTRL_RWC)
+                ohci->hc_control |= OHCI_CTRL_RWC;
 
         /* Read the number of ports unless overridden */
         if (ohci->num_ports == 0)
@@ -488,16 +495,19 @@ static int ohci_init (struct ohci_hcd *ohci)
         if (ohci->hcca)
                 return 0;
 
-        ohci->hcca = dma_alloc_coherent (ohci_to_hcd(ohci)->self.controller,
+        ohci->hcca = dma_alloc_coherent (hcd->self.controller,
                         sizeof *ohci->hcca, &ohci->hcca_dma, 0);
         if (!ohci->hcca)
                 return -ENOMEM;
 
         if ((ret = ohci_mem_init (ohci)) < 0)
-                ohci_stop (ohci_to_hcd(ohci));
+                ohci_stop (hcd);
+        else {
+                register_reboot_notifier (&ohci->reboot_notifier);
+                create_debug_files (ohci);
+        }
 
         return ret;
-
 }
 
 /*-------------------------------------------------------------------------*/
@@ -510,6 +520,7 @@ static int ohci_run (struct ohci_hcd *ohci)
 {
         u32                     mask, temp;
         int                     first = ohci->fminterval == 0;
+        struct usb_hcd          *hcd = ohci_to_hcd(ohci);
 
         disable (ohci);
 
@@ -525,18 +536,17 @@ static int ohci_run (struct ohci_hcd *ohci)
                 /* also: power/overcurrent flags in roothub.a */
         }
 
-        /* Reset USB nearly "by the book".  RemoteWakeupConnected
-         * saved if boot firmware (BIOS/SMM/...) told us it's connected
-         * (for OHCI integrated on mainboard, it normally is)
+        /* Reset USB nearly "by the book".  RemoteWakeupConnected was
+         * saved if boot firmware (BIOS/SMM/...) told us it's connected,
+         * or if bus glue did the same (e.g. for PCI add-in cards with
+         * PCI PM support).
          */
-        ohci->hc_control = ohci_readl (ohci, &ohci->regs->control);
         ohci_dbg (ohci, "resetting from state '%s', control = 0x%x\n",
                         hcfs2string (ohci->hc_control & OHCI_CTRL_HCFS),
-                        ohci->hc_control);
-
-        if (ohci->hc_control & OHCI_CTRL_RWC
-                        && !(ohci->flags & OHCI_QUIRK_AMD756))
-                ohci_to_hcd(ohci)->can_wakeup = 1;
+                        ohci_readl (ohci, &ohci->regs->control));
+        if ((ohci->hc_control & OHCI_CTRL_RWC) != 0
+                        && !device_may_wakeup(hcd->self.controller))
+                device_init_wakeup(hcd->self.controller, 1);
 
         switch (ohci->hc_control & OHCI_CTRL_HCFS) {
         case OHCI_USB_OPER:
@@ -632,7 +642,7 @@ retry:
         ohci->hc_control &= OHCI_CTRL_RWC;
         ohci->hc_control |= OHCI_CONTROL_INIT | OHCI_USB_OPER;
         ohci_writel (ohci, ohci->hc_control, &ohci->regs->control);
-        ohci_to_hcd(ohci)->state = HC_STATE_RUNNING;
+        hcd->state = HC_STATE_RUNNING;
 
         /* wake on ConnectStatusChange, matching external hubs */
         ohci_writel (ohci, RH_HS_DRWE, &ohci->regs->roothub.status);
@@ -667,15 +677,10 @@ retry:
 
         // POTPGT delay is bits 24-31, in 2 ms units.
         mdelay ((temp >> 23) & 0x1fe);
-        ohci_to_hcd(ohci)->state = HC_STATE_RUNNING;
+        hcd->state = HC_STATE_RUNNING;
 
         ohci_dump (ohci, 1);
 
-        if (ohci_to_hcd(ohci)->self.root_hub == NULL) {
-                register_reboot_notifier (&ohci->reboot_notifier);
-                create_debug_files (ohci);
-        }
-
         return 0;
 }
 
@@ -905,6 +910,10 @@ MODULE_LICENSE ("GPL");
 #include "ohci-ppc-soc.c"
 #endif
 
+#ifdef CONFIG_ARCH_AT91RM9200
+#include "ohci-at91.c"
+#endif
+
 #if !(defined(CONFIG_PCI) \
       || defined(CONFIG_SA1111) \
       || defined(CONFIG_ARCH_S3C2410) \
@@ -913,6 +922,7 @@ MODULE_LICENSE ("GPL");
       || defined (CONFIG_PXA27x) \
       || defined (CONFIG_SOC_AU1X00) \
       || defined (CONFIG_USB_OHCI_HCD_PPC_SOC) \
+      || defined (CONFIG_ARCH_AT91RM9200) \
         )
 #error "missing bus glue for ohci-hcd"
 #endif
diff --git a/drivers/usb/host/ohci-hub.c b/drivers/usb/host/ohci-hub.c
index 4b2226d77b34..0bb972b58336 100644
--- a/drivers/usb/host/ohci-hub.c
+++ b/drivers/usb/host/ohci-hub.c
@@ -107,7 +107,7 @@ static int ohci_bus_suspend (struct usb_hcd *hcd)
                         &ohci->regs->intrstatus);
 
         /* maybe resume can wake root hub */
-        if (hcd->remote_wakeup)
+        if (device_may_wakeup(&ohci_to_hcd(ohci)->self.root_hub->dev))
                 ohci->hc_control |= OHCI_CTRL_RWE;
         else
                 ohci->hc_control &= ~OHCI_CTRL_RWE;
@@ -246,9 +246,9 @@ static int ohci_bus_resume (struct usb_hcd *hcd)
         (void) ohci_readl (ohci, &ohci->regs->control);
         msleep (3);
 
-        temp = OHCI_CONTROL_INIT | OHCI_USB_OPER;
-        if (hcd->can_wakeup)
-                temp |= OHCI_CTRL_RWC;
+        temp = ohci->hc_control;
+        temp &= OHCI_CTRL_RWC;
+        temp |= OHCI_CONTROL_INIT | OHCI_USB_OPER;
         ohci->hc_control = temp;
         ohci_writel (ohci, temp, &ohci->regs->control);
         (void) ohci_readl (ohci, &ohci->regs->control);
@@ -302,7 +302,7 @@ ohci_hub_status_data (struct usb_hcd *hcd, char *buf)
 {
         struct ohci_hcd *ohci = hcd_to_ohci (hcd);
         int             i, changed = 0, length = 1;
-        int             can_suspend = hcd->can_wakeup;
+        int             can_suspend = device_may_wakeup(&hcd->self.root_hub->dev);
         unsigned long   flags;
 
         spin_lock_irqsave (&ohci->lock, flags);
@@ -354,7 +354,7 @@ ohci_hub_status_data (struct usb_hcd *hcd, char *buf)
                  */
                 if (!(status & RH_PS_CCS))
                         continue;
-                if ((status & RH_PS_PSS) && hcd->remote_wakeup)
+                if ((status & RH_PS_PSS) && can_suspend)
                         continue;
                 can_suspend = 0;
         }
diff --git a/drivers/usb/host/ohci-pci.c b/drivers/usb/host/ohci-pci.c
index 1b09dde068e1..1bfe96f4d045 100644
--- a/drivers/usb/host/ohci-pci.c
+++ b/drivers/usb/host/ohci-pci.c
@@ -35,7 +35,10 @@ ohci_pci_start (struct usb_hcd *hcd)
         struct ohci_hcd *ohci = hcd_to_ohci (hcd);
         int             ret;
 
-        if(hcd->self.controller && hcd->self.controller->bus == &pci_bus_type) {
+        /* REVISIT this whole block should move to reset(), which handles
+         * all the other one-time init.
+         */
+        if (hcd->self.controller) {
                 struct pci_dev *pdev = to_pci_dev(hcd->self.controller);
 
                 /* AMD 756, for most chips (early revs), corrupts register
@@ -45,7 +48,8 @@ ohci_pci_start (struct usb_hcd *hcd)
                                 && pdev->device == 0x740c) {
                         ohci->flags = OHCI_QUIRK_AMD756;
                         ohci_dbg (ohci, "AMD756 erratum 4 workaround\n");
-                        // also somewhat erratum 10 (suspend/resume issues)
+                        /* also erratum 10 (suspend/resume issues) */
+                        device_init_wakeup(&hcd->self.root_hub->dev, 0);
                 }
 
                 /* FIXME for some of the early AMD 760 southbridges, OHCI
@@ -88,6 +92,13 @@ ohci_pci_start (struct usb_hcd *hcd)
                         ohci_dbg (ohci,
                                 "enabled Compaq ZFMicro chipset quirk\n");
                 }
+
+                /* RWC may not be set for add-in PCI cards, since boot
+                 * firmware probably ignored them.  This transfers PCI
+                 * PM wakeup capabilities (once the PCI layer is fixed).
+                 */
+                if (device_may_wakeup(&pdev->dev))
+                        ohci->hc_control |= OHCI_CTRL_RWC;
         }
 
         /* NOTE: there may have already been a first reset, to
diff --git a/drivers/usb/host/sl811-hcd.c b/drivers/usb/host/sl811-hcd.c
index 517360b77d8e..a92343052751 100644
--- a/drivers/usb/host/sl811-hcd.c
+++ b/drivers/usb/host/sl811-hcd.c
@@ -853,7 +853,7 @@ static int sl811h_urb_enqueue(
 
         } else {
                 INIT_LIST_HEAD(&ep->schedule);
-                ep->udev = usb_get_dev(udev);
+                ep->udev = udev;
                 ep->epnum = epnum;
                 ep->maxpacket = usb_maxpacket(udev, urb->pipe, is_out);
                 ep->defctrl = SL11H_HCTLMASK_ARM | SL11H_HCTLMASK_ENABLE;
@@ -1052,7 +1052,6 @@ sl811h_endpoint_disable(struct usb_hcd *hcd, struct usb_host_endpoint *hep)
         if (!list_empty(&hep->urb_list))
                 WARN("ep %p not empty?\n", ep);
 
-        usb_put_dev(ep->udev);
         kfree(ep);
         hep->hcpriv = NULL;
 }
diff --git a/drivers/usb/host/uhci-debug.c b/drivers/usb/host/uhci-debug.c
index 5832953086f8..e1239319655c 100644
--- a/drivers/usb/host/uhci-debug.c
+++ b/drivers/usb/host/uhci-debug.c
@@ -17,10 +17,13 @@
 
 #include "uhci-hcd.h"
 
-static struct dentry *uhci_debugfs_root = NULL;
+#define uhci_debug_operations (* (struct file_operations *) NULL)
+static struct dentry *uhci_debugfs_root;
+
+#ifdef DEBUG
 
 /* Handle REALLY large printks so we don't overflow buffers */
-static inline void lprintk(char *buf)
+static void lprintk(char *buf)
 {
         char *p;
 
@@ -90,13 +93,59 @@ static int uhci_show_td(struct uhci_td *td, char *buf, int len, int space)
         return out - buf;
 }
 
-static int uhci_show_qh(struct uhci_qh *qh, char *buf, int len, int space)
+static int uhci_show_urbp(struct urb_priv *urbp, char *buf, int len, int space)
 {
         char *out = buf;
-        struct urb_priv *urbp;
-        struct list_head *head, *tmp;
         struct uhci_td *td;
-        int i = 0, checked = 0, prevactive = 0;
+        int i, nactive, ninactive;
+
+        if (len < 200)
+                return 0;
+
+        out += sprintf(out, "urb_priv [%p] ", urbp);
+        out += sprintf(out, "urb [%p] ", urbp->urb);
+        out += sprintf(out, "qh [%p] ", urbp->qh);
+        out += sprintf(out, "Dev=%d ", usb_pipedevice(urbp->urb->pipe));
+        out += sprintf(out, "EP=%x(%s) ", usb_pipeendpoint(urbp->urb->pipe),
+                        (usb_pipein(urbp->urb->pipe) ? "IN" : "OUT"));
+
+        switch (usb_pipetype(urbp->urb->pipe)) {
+        case PIPE_ISOCHRONOUS: out += sprintf(out, "ISO"); break;
+        case PIPE_INTERRUPT: out += sprintf(out, "INT"); break;
+        case PIPE_BULK: out += sprintf(out, "BLK"); break;
+        case PIPE_CONTROL: out += sprintf(out, "CTL"); break;
+        }
+
+        out += sprintf(out, "%s", (urbp->fsbr ? " FSBR" : ""));
+
+        if (urbp->urb->status != -EINPROGRESS)
+                out += sprintf(out, " Status=%d", urbp->urb->status);
+        out += sprintf(out, "\n");
+
+        i = nactive = ninactive = 0;
+        list_for_each_entry(td, &urbp->td_list, list) {
+                if (++i <= 10 || debug > 2) {
+                        out += sprintf(out, "%*s%d: ", space + 2, "", i);
+                        out += uhci_show_td(td, out, len - (out - buf), 0);
+                } else {
+                        if (td_status(td) & TD_CTRL_ACTIVE)
+                                ++nactive;
+                        else
+                                ++ninactive;
+                }
+        }
+        if (nactive + ninactive > 0)
+                out += sprintf(out, "%*s[skipped %d inactive and %d active "
+                                "TDs]\n",
+                                space, "", ninactive, nactive);
+
+        return out - buf;
+}
+
+static int uhci_show_qh(struct uhci_qh *qh, char *buf, int len, int space)
+{
+        char *out = buf;
+        int i, nurbs;
         __le32 element = qh_element(qh);
 
         /* Try to make sure there's enough memory */
@@ -118,86 +167,40 @@ static int uhci_show_qh(struct uhci_qh *qh, char *buf, int len, int space)
         if (!(element & ~(UHCI_PTR_QH | UHCI_PTR_DEPTH)))
                 out += sprintf(out, "%*s  Element is NULL (bug?)\n", space, "");
 
-        if (!qh->urbp) {
-                out += sprintf(out, "%*s  urbp == NULL\n", space, "");
-                goto out;
-        }
-
-        urbp = qh->urbp;
-
-        head = &urbp->td_list;
-        tmp = head->next;
-
-        td = list_entry(tmp, struct uhci_td, list);
-
-        if (cpu_to_le32(td->dma_handle) != (element & ~UHCI_PTR_BITS))
-                out += sprintf(out, "%*s Element != First TD\n", space, "");
-
-        while (tmp != head) {
-                struct uhci_td *td = list_entry(tmp, struct uhci_td, list);
-
-                tmp = tmp->next;
-
-                out += sprintf(out, "%*s%d: ", space + 2, "", i++);
-                out += uhci_show_td(td, out, len - (out - buf), 0);
-
-                if (i > 10 && !checked && prevactive && tmp != head &&
-                    debug <= 2) {
-                        struct list_head *ntmp = tmp;
-                        struct uhci_td *ntd = td;
-                        int active = 1, ni = i;
-
-                        checked = 1;
-
-                        while (ntmp != head && ntmp->next != head && active) {
-                                ntd = list_entry(ntmp, struct uhci_td, list);
-
-                                ntmp = ntmp->next;
-
-                                active = td_status(ntd) & TD_CTRL_ACTIVE;
-
-                                ni++;
-                        }
-
-                        if (active && ni > i) {
-                                out += sprintf(out, "%*s[skipped %d active TDs]\n", space, "", ni - i);
-                                tmp = ntmp;
-                                td = ntd;
-                                i = ni;
-                        }
+        if (list_empty(&qh->queue)) {
+                out += sprintf(out, "%*s  queue is empty\n", space, "");
+        } else {
+                struct urb_priv *urbp = list_entry(qh->queue.next,
+                                struct urb_priv, node);
+                struct uhci_td *td = list_entry(urbp->td_list.next,
+                                struct uhci_td, list);
+
+                if (cpu_to_le32(td->dma_handle) != (element & ~UHCI_PTR_BITS))
+                        out += sprintf(out, "%*s Element != First TD\n",
+                                        space, "");
+                i = nurbs = 0;
+                list_for_each_entry(urbp, &qh->queue, node) {
+                        if (++i <= 10)
+                                out += uhci_show_urbp(urbp, out,
+                                                len - (out - buf), space + 2);
+                        else
+                                ++nurbs;
                 }
-
-                prevactive = td_status(td) & TD_CTRL_ACTIVE;
+                if (nurbs > 0)
+                        out += sprintf(out, "%*s Skipped %d URBs\n",
+                                        space, "", nurbs);
         }
 
-        if (list_empty(&urbp->queue_list) || urbp->queued)
-                goto out;
-
-        out += sprintf(out, "%*sQueued QHs:\n", -space, "--");
-
-        head = &urbp->queue_list;
-        tmp = head->next;
-
-        while (tmp != head) {
-                struct urb_priv *nurbp = list_entry(tmp, struct urb_priv,
-                                                queue_list);
-                tmp = tmp->next;
-
-                out += uhci_show_qh(nurbp->qh, out, len - (out - buf), space);
+        if (qh->udev) {
+                out += sprintf(out, "%*s  Dummy TD\n", space, "");
+                out += uhci_show_td(qh->dummy_td, out, len - (out - buf), 0);
         }
 
-out:
         return out - buf;
 }
 
-#define show_frame_num()        \
-        if (!shown) {           \
-          shown = 1;            \
-          out += sprintf(out, "- Frame %d\n", i); \
-        }
-
-#ifdef CONFIG_PROC_FS
 static const char * const qh_names[] = {
+  "skel_unlink_qh", "skel_iso_qh",
   "skel_int128_qh", "skel_int64_qh",
   "skel_int32_qh", "skel_int16_qh",
   "skel_int8_qh", "skel_int4_qh",
@@ -206,12 +209,6 @@ static const char * const qh_names[] = {
   "skel_bulk_qh", "skel_term_qh"
 };
 
-#define show_qh_name()          \
-        if (!shown) {           \
-          shown = 1;            \
-          out += sprintf(out, "- %s\n", qh_names[i]); \
-        }
-
 static int uhci_show_sc(int port, unsigned short status, char *buf, int len)
 {
         char *out = buf;
@@ -321,139 +318,29 @@ static int uhci_show_status(struct uhci_hcd *uhci, char *buf, int len)
         return out - buf;
 }
 
-static int uhci_show_urbp(struct uhci_hcd *uhci, struct urb_priv *urbp, char *buf, int len)
-{
-        struct list_head *tmp;
-        char *out = buf;
-        int count = 0;
-
-        if (len < 200)
-                return 0;
-
-        out += sprintf(out, "urb_priv [%p] ", urbp);
-        out += sprintf(out, "urb [%p] ", urbp->urb);
-        out += sprintf(out, "qh [%p] ", urbp->qh);
-        out += sprintf(out, "Dev=%d ", usb_pipedevice(urbp->urb->pipe));
-        out += sprintf(out, "EP=%x(%s) ", usb_pipeendpoint(urbp->urb->pipe), (usb_pipein(urbp->urb->pipe) ? "IN" : "OUT"));
-
-        switch (usb_pipetype(urbp->urb->pipe)) {
-        case PIPE_ISOCHRONOUS: out += sprintf(out, "ISO "); break;
-        case PIPE_INTERRUPT: out += sprintf(out, "INT "); break;
-        case PIPE_BULK: out += sprintf(out, "BLK "); break;
-        case PIPE_CONTROL: out += sprintf(out, "CTL "); break;
-        }
-
-        out += sprintf(out, "%s", (urbp->fsbr ? "FSBR " : ""));
-        out += sprintf(out, "%s", (urbp->fsbr_timeout ? "FSBR_TO " : ""));
-
-        if (urbp->urb->status != -EINPROGRESS)
-                out += sprintf(out, "Status=%d ", urbp->urb->status);
-        //out += sprintf(out, "FSBRtime=%lx ",urbp->fsbrtime);
-
-        count = 0;
-        list_for_each(tmp, &urbp->td_list)
-                count++;
-        out += sprintf(out, "TDs=%d ",count);
-
-        if (urbp->queued)
-                out += sprintf(out, "queued\n");
-        else {
-                count = 0;
-                list_for_each(tmp, &urbp->queue_list)
-                        count++;
-                out += sprintf(out, "queued URBs=%d\n", count);
-        }
-
-        return out - buf;
-}
-
-static int uhci_show_lists(struct uhci_hcd *uhci, char *buf, int len)
-{
-        char *out = buf;
-        struct list_head *head, *tmp;
-        int count;
-
-        out += sprintf(out, "Main list URBs:");
-        if (list_empty(&uhci->urb_list))
-                out += sprintf(out, " Empty\n");
-        else {
-                out += sprintf(out, "\n");
-                count = 0;
-                head = &uhci->urb_list;
-                tmp = head->next;
-                while (tmp != head) {
-                        struct urb_priv *urbp = list_entry(tmp, struct urb_priv, urb_list);
-
-                        out += sprintf(out, "  %d: ", ++count);
-                        out += uhci_show_urbp(uhci, urbp, out, len - (out - buf));
-                        tmp = tmp->next;
-                }
-        }
-
-        out += sprintf(out, "Remove list URBs:");
-        if (list_empty(&uhci->urb_remove_list))
-                out += sprintf(out, " Empty\n");
-        else {
-                out += sprintf(out, "\n");
-                count = 0;
-                head = &uhci->urb_remove_list;
-                tmp = head->next;
-                while (tmp != head) {
-                        struct urb_priv *urbp = list_entry(tmp, struct urb_priv, urb_list);
-
-                        out += sprintf(out, "  %d: ", ++count);
-                        out += uhci_show_urbp(uhci, urbp, out, len - (out - buf));
-                        tmp = tmp->next;
-                }
-        }
-
-        out += sprintf(out, "Complete list URBs:");
-        if (list_empty(&uhci->complete_list))
-                out += sprintf(out, " Empty\n");
-        else {
-                out += sprintf(out, "\n");
-                count = 0;
-                head = &uhci->complete_list;
-                tmp = head->next;
-                while (tmp != head) {
-                        struct urb_priv *urbp = list_entry(tmp, struct urb_priv, urb_list);
-
-                        out += sprintf(out, "  %d: ", ++count);
-                        out += uhci_show_urbp(uhci, urbp, out, len - (out - buf));
-                        tmp = tmp->next;
-                }
-        }
-
-        return out - buf;
-}
-
 static int uhci_sprint_schedule(struct uhci_hcd *uhci, char *buf, int len)
 {
-        unsigned long flags;
         char *out = buf;
         int i, j;
         struct uhci_qh *qh;
         struct uhci_td *td;
         struct list_head *tmp, *head;
 
-        spin_lock_irqsave(&uhci->lock, flags);
-
         out += uhci_show_root_hub_state(uhci, out, len - (out - buf));
         out += sprintf(out, "HC status\n");
         out += uhci_show_status(uhci, out, len - (out - buf));
+        if (debug <= 1)
+                return out - buf;
 
         out += sprintf(out, "Frame List\n");
         for (i = 0; i < UHCI_NUMFRAMES; ++i) {
-                int shown = 0;
                 td = uhci->frame_cpu[i];
                 if (!td)
                         continue;
 
-                if (td->dma_handle != (dma_addr_t)uhci->frame[i]) {
-                        show_frame_num();
+                out += sprintf(out, "- Frame %d\n", i); \
+                if (td->dma_handle != (dma_addr_t)uhci->frame[i])
                         out += sprintf(out, "    frame list does not match td->dma_handle!\n");
-                }
-                show_frame_num();
 
                 head = &td->fl_list;
                 tmp = head;
@@ -467,14 +354,11 @@ static int uhci_sprint_schedule(struct uhci_hcd *uhci, char *buf, int len)
         out += sprintf(out, "Skeleton QHs\n");
 
         for (i = 0; i < UHCI_NUM_SKELQH; ++i) {
-                int shown = 0;
+                int cnt = 0;
 
                 qh = uhci->skelqh[i];
-
-                if (debug > 1) {
-                        show_qh_name();
-                        out += uhci_show_qh(qh, out, len - (out - buf), 4);
-                }
+                out += sprintf(out, "- %s\n", qh_names[i]); \
+                out += uhci_show_qh(qh, out, len - (out - buf), 4);
 
                 /* Last QH is the Terminating QH, it's different */
                 if (i == UHCI_NUM_SKELQH - 1) {
@@ -487,53 +371,37 @@ static int uhci_sprint_schedule(struct uhci_hcd *uhci, char *buf, int len)
                         continue;
                 }
 
-                j = (i < 7) ? 7 : i+1;          /* Next skeleton */
-                if (list_empty(&qh->list)) {
-                        if (i < UHCI_NUM_SKELQH - 1) {
-                                if (qh->link !=
-                                    (cpu_to_le32(uhci->skelqh[j]->dma_handle) | UHCI_PTR_QH)) {
-                                        show_qh_name();
-                                        out += sprintf(out, "    skeleton QH not linked to next skeleton QH!\n");
-                                }
-                        }
-
-                        continue;
-                }
-
-                show_qh_name();
-
-                head = &qh->list;
+                j = (i < 9) ? 9 : i+1;          /* Next skeleton */
+                head = &qh->node;
                 tmp = head->next;
 
                 while (tmp != head) {
-                        qh = list_entry(tmp, struct uhci_qh, list);
-
+                        qh = list_entry(tmp, struct uhci_qh, node);
                         tmp = tmp->next;
-
-                        out += uhci_show_qh(qh, out, len - (out - buf), 4);
+                        if (++cnt <= 10)
+                                out += uhci_show_qh(qh, out,
+                                                len - (out - buf), 4);
                 }
+                if ((cnt -= 10) > 0)
+                        out += sprintf(out, "    Skipped %d QHs\n", cnt);
 
-                if (i < UHCI_NUM_SKELQH - 1) {
+                if (i > 1 && i < UHCI_NUM_SKELQH - 1) {
                         if (qh->link !=
                             (cpu_to_le32(uhci->skelqh[j]->dma_handle) | UHCI_PTR_QH))
                                 out += sprintf(out, "    last QH not linked to next skeleton!\n");
                 }
         }
 
-        if (debug > 2)
-                out += uhci_show_lists(uhci, out, len - (out - buf));
-
-        spin_unlock_irqrestore(&uhci->lock, flags);
-
         return out - buf;
 }
 
+#ifdef CONFIG_DEBUG_FS
+
 #define MAX_OUTPUT      (64 * 1024)
 
 struct uhci_debug {
         int size;
         char *data;
-        struct uhci_hcd *uhci;
 };
 
 static int uhci_debug_open(struct inode *inode, struct file *file)
@@ -541,6 +409,7 @@ static int uhci_debug_open(struct inode *inode, struct file *file)
         struct uhci_hcd *uhci = inode->u.generic_ip;
         struct uhci_debug *up;
         int ret = -ENOMEM;
+        unsigned long flags;
 
         lock_kernel();
         up = kmalloc(sizeof(*up), GFP_KERNEL);
@@ -553,7 +422,11 @@ static int uhci_debug_open(struct inode *inode, struct file *file)
                 goto out;
         }
 
-        up->size = uhci_sprint_schedule(uhci, up->data, MAX_OUTPUT);
+        up->size = 0;
+        spin_lock_irqsave(&uhci->lock, flags);
+        if (uhci->is_initialized)
+                up->size = uhci_sprint_schedule(uhci, up->data, MAX_OUTPUT);
+        spin_unlock_irqrestore(&uhci->lock, flags);
 
         file->private_data = up;
 
@@ -604,15 +477,32 @@ static int uhci_debug_release(struct inode *inode, struct file *file)
         return 0;
 }
 
+#undef uhci_debug_operations
 static struct file_operations uhci_debug_operations = {
+        .owner =        THIS_MODULE,
         .open =         uhci_debug_open,
         .llseek =       uhci_debug_lseek,
         .read =         uhci_debug_read,
         .release =      uhci_debug_release,
 };
 
-#else   /* CONFIG_DEBUG_FS */
+#endif  /* CONFIG_DEBUG_FS */
 
-#define uhci_debug_operations (* (struct file_operations *) NULL)
+#else   /* DEBUG */
+
+static inline void lprintk(char *buf)
+{}
+
+static inline int uhci_show_qh(struct uhci_qh *qh, char *buf,
+                int len, int space)
+{
+        return 0;
+}
+
+static inline int uhci_sprint_schedule(struct uhci_hcd *uhci,
+                char *buf, int len)
+{
+        return 0;
+}
 
 #endif
diff --git a/drivers/usb/host/uhci-hcd.c b/drivers/usb/host/uhci-hcd.c
index dfe121d35887..4edb8330c440 100644
--- a/drivers/usb/host/uhci-hcd.c
+++ b/drivers/usb/host/uhci-hcd.c
@@ -54,7 +54,7 @@
 /*
  * Version Information
  */
-#define DRIVER_VERSION "v2.3"
+#define DRIVER_VERSION "v3.0"
 #define DRIVER_AUTHOR "Linus 'Frodo Rabbit' Torvalds, Johannes Erdfelt, \
 Randy Dunlap, Georg Acher, Deti Fliegl, Thomas Sailer, Roman Weissgaerber, \
 Alan Stern"
@@ -68,12 +68,16 @@ Alan Stern"
  * debug = 3, show all TDs in URBs when dumping
  */
 #ifdef DEBUG
+#define DEBUG_CONFIGURED        1
 static int debug = 1;
-#else
-static int debug = 0;
-#endif
 module_param(debug, int, S_IRUGO | S_IWUSR);
 MODULE_PARM_DESC(debug, "Debug level");
+
+#else
+#define DEBUG_CONFIGURED        0
+#define debug                   0
+#endif
+
 static char *errbuf;
 #define ERRBUF_LEN    (32 * 1024)
 
@@ -338,6 +342,12 @@ static irqreturn_t uhci_irq(struct usb_hcd *hcd, struct pt_regs *regs)
                                 dev_err(uhci_dev(uhci),
                                         "host controller halted, "
                                         "very bad!\n");
+                                if (debug > 1 && errbuf) {
+                                        /* Print the schedule for debugging */
+                                        uhci_sprint_schedule(uhci,
+                                                        errbuf, ERRBUF_LEN);
+                                        lprintk(errbuf);
+                                }
                                 hc_died(uhci);
 
                                 /* Force a callback in case there are
@@ -376,6 +386,14 @@ static void release_uhci(struct uhci_hcd *uhci)
 {
         int i;
 
+        if (DEBUG_CONFIGURED) {
+                spin_lock_irq(&uhci->lock);
+                uhci->is_initialized = 0;
+                spin_unlock_irq(&uhci->lock);
+
+                debugfs_remove(uhci->dentry);
+        }
+
         for (i = 0; i < UHCI_NUM_SKELQH; i++)
                 uhci_free_qh(uhci, uhci->skelqh[i]);
 
@@ -390,8 +408,6 @@ static void release_uhci(struct uhci_hcd *uhci)
         dma_free_coherent(uhci_dev(uhci),
                         UHCI_NUMFRAMES * sizeof(*uhci->frame),
                         uhci->frame, uhci->frame_dma_handle);
-
-        debugfs_remove(uhci->dentry);
 }
 
 static int uhci_reset(struct usb_hcd *hcd)
@@ -474,33 +490,29 @@ static int uhci_start(struct usb_hcd *hcd)
 
         hcd->uses_new_polling = 1;
 
-        dentry = debugfs_create_file(hcd->self.bus_name,
-                        S_IFREG|S_IRUGO|S_IWUSR, uhci_debugfs_root, uhci,
-                        &uhci_debug_operations);
-        if (!dentry) {
-                dev_err(uhci_dev(uhci),
-                                "couldn't create uhci debugfs entry\n");
-                retval = -ENOMEM;
-                goto err_create_debug_entry;
-        }
-        uhci->dentry = dentry;
-
         uhci->fsbr = 0;
         uhci->fsbrtimeout = 0;
 
         spin_lock_init(&uhci->lock);
-        INIT_LIST_HEAD(&uhci->qh_remove_list);
 
         INIT_LIST_HEAD(&uhci->td_remove_list);
-
-        INIT_LIST_HEAD(&uhci->urb_remove_list);
-
-        INIT_LIST_HEAD(&uhci->urb_list);
-
-        INIT_LIST_HEAD(&uhci->complete_list);
+        INIT_LIST_HEAD(&uhci->idle_qh_list);
 
         init_waitqueue_head(&uhci->waitqh);
 
+        if (DEBUG_CONFIGURED) {
+                dentry = debugfs_create_file(hcd->self.bus_name,
+                                S_IFREG|S_IRUGO|S_IWUSR, uhci_debugfs_root,
+                                uhci, &uhci_debug_operations);
+                if (!dentry) {
+                        dev_err(uhci_dev(uhci), "couldn't create uhci "
+                                        "debugfs entry\n");
+                        retval = -ENOMEM;
+                        goto err_create_debug_entry;
+                }
+                uhci->dentry = dentry;
+        }
+
         uhci->frame = dma_alloc_coherent(uhci_dev(uhci),
                         UHCI_NUMFRAMES * sizeof(*uhci->frame),
                         &uhci->frame_dma_handle, 0);
@@ -540,7 +552,7 @@ static int uhci_start(struct usb_hcd *hcd)
         }
 
         for (i = 0; i < UHCI_NUM_SKELQH; i++) {
-                uhci->skelqh[i] = uhci_alloc_qh(uhci);
+                uhci->skelqh[i] = uhci_alloc_qh(uhci, NULL, NULL);
                 if (!uhci->skelqh[i]) {
                         dev_err(uhci_dev(uhci), "unable to allocate QH\n");
                         goto err_alloc_skelqh;
@@ -557,13 +569,17 @@ static int uhci_start(struct usb_hcd *hcd)
                         uhci->skel_int16_qh->link =
                         uhci->skel_int8_qh->link =
                         uhci->skel_int4_qh->link =
-                        uhci->skel_int2_qh->link =
-                        cpu_to_le32(uhci->skel_int1_qh->dma_handle) | UHCI_PTR_QH;
-        uhci->skel_int1_qh->link = cpu_to_le32(uhci->skel_ls_control_qh->dma_handle) | UHCI_PTR_QH;
-
-        uhci->skel_ls_control_qh->link = cpu_to_le32(uhci->skel_fs_control_qh->dma_handle) | UHCI_PTR_QH;
-        uhci->skel_fs_control_qh->link = cpu_to_le32(uhci->skel_bulk_qh->dma_handle) | UHCI_PTR_QH;
-        uhci->skel_bulk_qh->link = cpu_to_le32(uhci->skel_term_qh->dma_handle) | UHCI_PTR_QH;
+                        uhci->skel_int2_qh->link = UHCI_PTR_QH |
+                        cpu_to_le32(uhci->skel_int1_qh->dma_handle);
+
+        uhci->skel_int1_qh->link = UHCI_PTR_QH |
+                        cpu_to_le32(uhci->skel_ls_control_qh->dma_handle);
+        uhci->skel_ls_control_qh->link = UHCI_PTR_QH |
+                        cpu_to_le32(uhci->skel_fs_control_qh->dma_handle);
+        uhci->skel_fs_control_qh->link = UHCI_PTR_QH |
+                        cpu_to_le32(uhci->skel_bulk_qh->dma_handle);
+        uhci->skel_bulk_qh->link = UHCI_PTR_QH |
+                        cpu_to_le32(uhci->skel_term_qh->dma_handle);
 
         /* This dummy TD is to work around a bug in Intel PIIX controllers */
         uhci_fill_td(uhci->term_td, 0, uhci_explen(0) |
@@ -589,15 +605,15 @@ static int uhci_start(struct usb_hcd *hcd)
 
                 /*
                  * ffs (Find First bit Set) does exactly what we need:
-                 * 1,3,5,...  => ffs = 0 => use skel_int2_qh = skelqh[6],
-                 * 2,6,10,... => ffs = 1 => use skel_int4_qh = skelqh[5], etc.
-                 * ffs > 6 => not on any high-period queue, so use
-                 *      skel_int1_qh = skelqh[7].
+                 * 1,3,5,...  => ffs = 0 => use skel_int2_qh = skelqh[8],
+                 * 2,6,10,... => ffs = 1 => use skel_int4_qh = skelqh[7], etc.
+                 * ffs >= 7 => not on any high-period queue, so use
+                 *      skel_int1_qh = skelqh[9].
                  * Add UHCI_NUMFRAMES to insure at least one bit is set.
                  */
-                irq = 6 - (int) __ffs(i + UHCI_NUMFRAMES);
-                if (irq < 0)
-                        irq = 7;
+                irq = 8 - (int) __ffs(i + UHCI_NUMFRAMES);
+                if (irq <= 1)
+                        irq = 9;
 
                 /* Only place we don't use the frame list routines */
                 uhci->frame[i] = UHCI_PTR_QH |
@@ -611,6 +627,7 @@ static int uhci_start(struct usb_hcd *hcd)
         mb();
 
         configure_hc(uhci);
+        uhci->is_initialized = 1;
         start_rh(uhci);
         return 0;
 
@@ -767,13 +784,30 @@ static int uhci_resume(struct usb_hcd *hcd)
 }
 #endif
 
-/* Wait until all the URBs for a particular device/endpoint are gone */
+/* Wait until a particular device/endpoint's QH is idle, and free it */
 static void uhci_hcd_endpoint_disable(struct usb_hcd *hcd,
-                struct usb_host_endpoint *ep)
+                struct usb_host_endpoint *hep)
 {
         struct uhci_hcd *uhci = hcd_to_uhci(hcd);
+        struct uhci_qh *qh;
+
+        spin_lock_irq(&uhci->lock);
+        qh = (struct uhci_qh *) hep->hcpriv;
+        if (qh == NULL)
+                goto done;
+
+        while (qh->state != QH_STATE_IDLE) {
+                ++uhci->num_waiting;
+                spin_unlock_irq(&uhci->lock);
+                wait_event_interruptible(uhci->waitqh,
+                                qh->state == QH_STATE_IDLE);
+                spin_lock_irq(&uhci->lock);
+                --uhci->num_waiting;
+        }
 
-        wait_event_interruptible(uhci->waitqh, list_empty(&ep->urb_list));
+        uhci_free_qh(uhci, qh);
+done:
+        spin_unlock_irq(&uhci->lock);
 }
 
 static int uhci_hcd_get_frame_number(struct usb_hcd *hcd)
@@ -857,16 +891,15 @@ static int __init uhci_hcd_init(void)
         if (usb_disabled())
                 return -ENODEV;
 
-        if (debug) {
+        if (DEBUG_CONFIGURED) {
                 errbuf = kmalloc(ERRBUF_LEN, GFP_KERNEL);
                 if (!errbuf)
                         goto errbuf_failed;
+                uhci_debugfs_root = debugfs_create_dir("uhci", NULL);
+                if (!uhci_debugfs_root)
+                        goto debug_failed;
         }
 
-        uhci_debugfs_root = debugfs_create_dir("uhci", NULL);
-        if (!uhci_debugfs_root)
-                goto debug_failed;
-
         uhci_up_cachep = kmem_cache_create("uhci_urb_priv",
                 sizeof(struct urb_priv), 0, 0, NULL, NULL);
         if (!uhci_up_cachep)
diff --git a/drivers/usb/host/uhci-hcd.h b/drivers/usb/host/uhci-hcd.h
index 8b4b887a7d41..4a69c7eb09bd 100644
--- a/drivers/usb/host/uhci-hcd.h
+++ b/drivers/usb/host/uhci-hcd.h
@@ -28,8 +28,9 @@
 #define   USBSTS_USBINT         0x0001  /* Interrupt due to IOC */
 #define   USBSTS_ERROR          0x0002  /* Interrupt due to error */
 #define   USBSTS_RD             0x0004  /* Resume Detect */
-#define   USBSTS_HSE            0x0008  /* Host System Error - basically PCI problems */
-#define   USBSTS_HCPE           0x0010  /* Host Controller Process Error - the scripts were buggy */
+#define   USBSTS_HSE            0x0008  /* Host System Error: PCI problems */
+#define   USBSTS_HCPE           0x0010  /* Host Controller Process Error:
+                                         * the schedule is buggy */
 #define   USBSTS_HCH            0x0020  /* HC Halted */
 
 /* Interrupt enable register */
@@ -47,7 +48,8 @@
 /* USB port status and control registers */
 #define USBPORTSC1      16
 #define USBPORTSC2      18
-#define   USBPORTSC_CCS         0x0001  /* Current Connect Status ("device present") */
+#define   USBPORTSC_CCS         0x0001  /* Current Connect Status
+                                         * ("device present") */
 #define   USBPORTSC_CSC         0x0002  /* Connect Status Change */
 #define   USBPORTSC_PE          0x0004  /* Port Enable */
 #define   USBPORTSC_PEC         0x0008  /* Port Enable Change */
@@ -71,15 +73,16 @@
 #define   USBLEGSUP_RWC         0x8f00  /* the R/WC bits */
 #define   USBLEGSUP_RO          0x5040  /* R/O and reserved bits */
 
-#define UHCI_PTR_BITS           cpu_to_le32(0x000F)
-#define UHCI_PTR_TERM           cpu_to_le32(0x0001)
-#define UHCI_PTR_QH             cpu_to_le32(0x0002)
-#define UHCI_PTR_DEPTH          cpu_to_le32(0x0004)
-#define UHCI_PTR_BREADTH        cpu_to_le32(0x0000)
+#define UHCI_PTR_BITS           __constant_cpu_to_le32(0x000F)
+#define UHCI_PTR_TERM           __constant_cpu_to_le32(0x0001)
+#define UHCI_PTR_QH             __constant_cpu_to_le32(0x0002)
+#define UHCI_PTR_DEPTH          __constant_cpu_to_le32(0x0004)
+#define UHCI_PTR_BREADTH        __constant_cpu_to_le32(0x0000)
 
 #define UHCI_NUMFRAMES          1024    /* in the frame list [array] */
 #define UHCI_MAX_SOF_NUMBER     2047    /* in an SOF packet */
-#define CAN_SCHEDULE_FRAMES     1000    /* how far future frames can be scheduled */
+#define CAN_SCHEDULE_FRAMES     1000    /* how far in the future frames
+                                         * can be scheduled */
 
 
 /*
@@ -87,38 +90,59 @@
  */
 
 /*
- * One role of a QH is to hold a queue of TDs for some endpoint.  Each QH is
- * used with one URB, and qh->element (updated by the HC) is either:
- *   - the next unprocessed TD for the URB, or
- *   - UHCI_PTR_TERM (when there's no more traffic for this endpoint), or
- *   - the QH for the next URB queued to the same endpoint.
+ * One role of a QH is to hold a queue of TDs for some endpoint.  One QH goes
+ * with each endpoint, and qh->element (updated by the HC) is either:
+ *   - the next unprocessed TD in the endpoint's queue, or
+ *   - UHCI_PTR_TERM (when there's no more traffic for this endpoint).
  *
  * The other role of a QH is to serve as a "skeleton" framelist entry, so we
  * can easily splice a QH for some endpoint into the schedule at the right
  * place.  Then qh->element is UHCI_PTR_TERM.
  *
- * In the frame list, qh->link maintains a list of QHs seen by the HC:
+ * In the schedule, qh->link maintains a list of QHs seen by the HC:
  *     skel1 --> ep1-qh --> ep2-qh --> ... --> skel2 --> ...
+ *
+ * qh->node is the software equivalent of qh->link.  The differences
+ * are that the software list is doubly-linked and QHs in the UNLINKING
+ * state are on the software list but not the hardware schedule.
+ *
+ * For bookkeeping purposes we maintain QHs even for Isochronous endpoints,
+ * but they never get added to the hardware schedule.
  */
+#define QH_STATE_IDLE           1       /* QH is not being used */
+#define QH_STATE_UNLINKING      2       /* QH has been removed from the
+                                         * schedule but the hardware may
+                                         * still be using it */
+#define QH_STATE_ACTIVE         3       /* QH is on the schedule */
+
 struct uhci_qh {
         /* Hardware fields */
-        __le32 link;                    /* Next queue */
-        __le32 element;                 /* Queue element pointer */
+        __le32 link;                    /* Next QH in the schedule */
+        __le32 element;                 /* Queue element (TD) pointer */
 
         /* Software fields */
         dma_addr_t dma_handle;
 
-        struct urb_priv *urbp;
+        struct list_head node;          /* Node in the list of QHs */
+        struct usb_host_endpoint *hep;  /* Endpoint information */
+        struct usb_device *udev;
+        struct list_head queue;         /* Queue of urbps for this QH */
+        struct uhci_qh *skel;           /* Skeleton for this QH */
+        struct uhci_td *dummy_td;       /* Dummy TD to end the queue */
 
-        struct list_head list;
-        struct list_head remove_list;
+        unsigned int unlink_frame;      /* When the QH was unlinked */
+        int state;                      /* QH_STATE_xxx; see above */
+
+        unsigned int initial_toggle:1;  /* Endpoint's current toggle value */
+        unsigned int needs_fixup:1;     /* Must fix the TD toggle values */
+        unsigned int is_stopped:1;      /* Queue was stopped by an error */
 } __attribute__((aligned(16)));
 
 /*
  * We need a special accessor for the element pointer because it is
  * subject to asynchronous updates by the controller.
  */
-static __le32 inline qh_element(struct uhci_qh *qh) {
+static inline __le32 qh_element(struct uhci_qh *qh) {
         __le32 element = qh->element;
 
         barrier();
@@ -149,11 +173,13 @@ static __le32 inline qh_element(struct uhci_qh *qh) {
 #define TD_CTRL_ACTLEN_MASK     0x7FF   /* actual length, encoded as n - 1 */
 
 #define TD_CTRL_ANY_ERROR       (TD_CTRL_STALLED | TD_CTRL_DBUFERR | \
-                                 TD_CTRL_BABBLE | TD_CTRL_CRCTIME | TD_CTRL_BITSTUFF)
+                                 TD_CTRL_BABBLE | TD_CTRL_CRCTIME | \
+                                 TD_CTRL_BITSTUFF)
 
 #define uhci_maxerr(err)                ((err) << TD_CTRL_C_ERR_SHIFT)
 #define uhci_status_bits(ctrl_sts)      ((ctrl_sts) & 0xF60000)
-#define uhci_actual_length(ctrl_sts)    (((ctrl_sts) + 1) & TD_CTRL_ACTLEN_MASK) /* 1-based */
+#define uhci_actual_length(ctrl_sts)    (((ctrl_sts) + 1) & \
+                        TD_CTRL_ACTLEN_MASK)    /* 1-based */
 
 /*
  * for TD <info>: (a.k.a. Token)
@@ -163,7 +189,7 @@ static __le32 inline qh_element(struct uhci_qh *qh) {
 #define TD_TOKEN_TOGGLE_SHIFT   19
 #define TD_TOKEN_TOGGLE         (1 << 19)
 #define TD_TOKEN_EXPLEN_SHIFT   21
-#define TD_TOKEN_EXPLEN_MASK    0x7FF           /* expected length, encoded as n - 1 */
+#define TD_TOKEN_EXPLEN_MASK    0x7FF   /* expected length, encoded as n-1 */
 #define TD_TOKEN_PID_MASK       0xFF
 
 #define uhci_explen(len)        ((((len) - 1) & TD_TOKEN_EXPLEN_MASK) << \
@@ -187,7 +213,7 @@ static __le32 inline qh_element(struct uhci_qh *qh) {
  * sw space after the TD entry.
  *
  * td->link points to either another TD (not necessarily for the same urb or
- * even the same endpoint), or nothing (PTR_TERM), or a QH (for queued urbs).
+ * even the same endpoint), or nothing (PTR_TERM), or a QH.
  */
 struct uhci_td {
         /* Hardware fields */
@@ -210,7 +236,7 @@ struct uhci_td {
  * We need a special accessor for the control/status word because it is
  * subject to asynchronous updates by the controller.
  */
-static u32 inline td_status(struct uhci_td *td) {
+static inline u32 td_status(struct uhci_td *td) {
         __le32 status = td->status;
 
         barrier();
@@ -223,17 +249,14 @@ static u32 inline td_status(struct uhci_td *td) {
  */
 
 /*
- * The UHCI driver places Interrupt, Control and Bulk into QHs both
- * to group together TDs for one transfer, and also to facilitate queuing
- * of URBs. To make it easy to insert entries into the schedule, we have
- * a skeleton of QHs for each predefined Interrupt latency, low-speed
- * control, full-speed control and terminating QH (see explanation for
- * the terminating QH below).
+ * The UHCI driver uses QHs with Interrupt, Control and Bulk URBs for
+ * automatic queuing. To make it easy to insert entries into the schedule,
+ * we have a skeleton of QHs for each predefined Interrupt latency,
+ * low-speed control, full-speed control, bulk, and terminating QH
+ * (see explanation for the terminating QH below).
  *
  * When we want to add a new QH, we add it to the end of the list for the
- * skeleton QH.
- *
- * For instance, the queue can look like this:
+ * skeleton QH.  For instance, the schedule list can look like this:
  *
  * skel int128 QH
  * dev 1 interrupt QH
@@ -256,26 +279,31 @@ static u32 inline td_status(struct uhci_td *td) {
  * - To loop back to the full-speed control queue for full-speed bandwidth
  *   reclamation.
  *
- * Isochronous transfers are stored before the start of the skeleton
- * schedule and don't use QHs. While the UHCI spec doesn't forbid the
- * use of QHs for Isochronous, it doesn't use them either. And the spec
- * says that queues never advance on an error completion status, which
- * makes them totally unsuitable for Isochronous transfers.
+ * There's a special skeleton QH for Isochronous QHs.  It never appears
+ * on the schedule, and Isochronous TDs go on the schedule before the
+ * the skeleton QHs.  The hardware accesses them directly rather than
+ * through their QH, which is used only for bookkeeping purposes.
+ * While the UHCI spec doesn't forbid the use of QHs for Isochronous,
+ * it doesn't use them either.  And the spec says that queues never
+ * advance on an error completion status, which makes them totally
+ * unsuitable for Isochronous transfers.
  */
 
-#define UHCI_NUM_SKELQH         12
-#define skel_int128_qh          skelqh[0]
-#define skel_int64_qh           skelqh[1]
-#define skel_int32_qh           skelqh[2]
-#define skel_int16_qh           skelqh[3]
-#define skel_int8_qh            skelqh[4]
-#define skel_int4_qh            skelqh[5]
-#define skel_int2_qh            skelqh[6]
-#define skel_int1_qh            skelqh[7]
-#define skel_ls_control_qh      skelqh[8]
-#define skel_fs_control_qh      skelqh[9]
-#define skel_bulk_qh            skelqh[10]
-#define skel_term_qh            skelqh[11]
+#define UHCI_NUM_SKELQH         14
+#define skel_unlink_qh          skelqh[0]
+#define skel_iso_qh             skelqh[1]
+#define skel_int128_qh          skelqh[2]
+#define skel_int64_qh           skelqh[3]
+#define skel_int32_qh           skelqh[4]
+#define skel_int16_qh           skelqh[5]
+#define skel_int8_qh            skelqh[6]
+#define skel_int4_qh            skelqh[7]
+#define skel_int2_qh            skelqh[8]
+#define skel_int1_qh            skelqh[9]
+#define skel_ls_control_qh      skelqh[10]
+#define skel_fs_control_qh      skelqh[11]
+#define skel_bulk_qh            skelqh[12]
+#define skel_term_qh            skelqh[13]
 
 /*
  * Search tree for determining where <interval> fits in the skelqh[]
@@ -293,21 +321,21 @@ static inline int __interval_to_skel(int interval)
         if (interval < 16) {
                 if (interval < 4) {
                         if (interval < 2)
-                                return 7;       /* int1 for 0-1 ms */
-                        return 6;               /* int2 for 2-3 ms */
+                                return 9;       /* int1 for 0-1 ms */
+                        return 8;               /* int2 for 2-3 ms */
                 }
                 if (interval < 8)
-                        return 5;               /* int4 for 4-7 ms */
-                return 4;                       /* int8 for 8-15 ms */
+                        return 7;               /* int4 for 4-7 ms */
+                return 6;                       /* int8 for 8-15 ms */
         }
         if (interval < 64) {
                 if (interval < 32)
-                        return 3;               /* int16 for 16-31 ms */
-                return 2;                       /* int32 for 32-63 ms */
+                        return 5;               /* int16 for 16-31 ms */
+                return 4;                       /* int32 for 32-63 ms */
         }
         if (interval < 128)
-                return 1;                       /* int64 for 64-127 ms */
-        return 0;                               /* int128 for 128-255 ms (Max.) */
+                return 3;                       /* int64 for 64-127 ms */
+        return 2;                               /* int128 for 128-255 ms (Max.) */
 }
 
 
@@ -360,15 +388,16 @@ struct uhci_hcd {
 
         struct uhci_td *term_td;        /* Terminating TD, see UHCI bug */
         struct uhci_qh *skelqh[UHCI_NUM_SKELQH];        /* Skeleton QHs */
+        struct uhci_qh *next_qh;        /* Next QH to scan */
 
         spinlock_t lock;
 
-        dma_addr_t frame_dma_handle;            /* Hardware frame list */
+        dma_addr_t frame_dma_handle;    /* Hardware frame list */
         __le32 *frame;
-        void **frame_cpu;                       /* CPU's frame list */
+        void **frame_cpu;               /* CPU's frame list */
 
-        int fsbr;                               /* Full-speed bandwidth reclamation */
-        unsigned long fsbrtimeout;              /* FSBR delay */
+        int fsbr;                       /* Full-speed bandwidth reclamation */
+        unsigned long fsbrtimeout;      /* FSBR delay */
 
         enum uhci_rh_state rh_state;
         unsigned long auto_stop_time;           /* When to AUTO_STOP */
@@ -382,6 +411,7 @@ struct uhci_hcd {
         unsigned int hc_inaccessible:1;         /* HC is suspended or dead */
         unsigned int working_RD:1;              /* Suspended root hub doesn't
                                                    need to be polled */
+        unsigned int is_initialized:1;          /* Data structure is usable */
 
         /* Support for port suspend/resume/reset */
         unsigned long port_c_suspend;           /* Bit-arrays of ports */
@@ -389,27 +419,16 @@ struct uhci_hcd {
         unsigned long resuming_ports;
         unsigned long ports_timeout;            /* Time to stop signalling */
 
-        /* Main list of URBs currently controlled by this HC */
-        struct list_head urb_list;
-
-        /* List of QHs that are done, but waiting to be unlinked (race) */
-        struct list_head qh_remove_list;
-        unsigned int qh_remove_age;             /* Age in frames */
-
         /* List of TDs that are done, but waiting to be freed (race) */
         struct list_head td_remove_list;
         unsigned int td_remove_age;             /* Age in frames */
 
-        /* List of asynchronously unlinked URBs */
-        struct list_head urb_remove_list;
-        unsigned int urb_remove_age;            /* Age in frames */
-
-        /* List of URBs awaiting completion callback */
-        struct list_head complete_list;
+        struct list_head idle_qh_list;          /* Where the idle QHs live */
 
         int rh_numports;                        /* Number of root-hub ports */
 
         wait_queue_head_t waitqh;               /* endpoint_disable waiters */
+        int num_waiting;                        /* Number of waiters */
 };
 
 /* Convert between a usb_hcd pointer and the corresponding uhci_hcd */
@@ -429,7 +448,7 @@ static inline struct usb_hcd *uhci_to_hcd(struct uhci_hcd *uhci)
  *      Private per-URB data
  */
 struct urb_priv {
-        struct list_head urb_list;
+        struct list_head node;          /* Node in the QH's urbp list */
 
         struct urb *urb;
 
@@ -437,15 +456,8 @@ struct urb_priv {
         struct list_head td_list;
 
         unsigned fsbr : 1;              /* URB turned on FSBR */
-        unsigned fsbr_timeout : 1;      /* URB timed out on FSBR */
-        unsigned queued : 1;            /* QH was queued (not linked in) */
-        unsigned short_control_packet : 1;      /* If we get a short packet during */
-                                                /*  a control transfer, retrigger */
-                                                /*  the status phase */
-
-        unsigned long fsbrtime;         /* In jiffies */
-
-        struct list_head queue_list;
+        unsigned short_transfer : 1;    /* URB got a short transfer, no
+                                         * need to rescan */
 };
 
 
diff --git a/drivers/usb/host/uhci-hub.c b/drivers/usb/host/uhci-hub.c
index a71e48a66805..152971d16769 100644
--- a/drivers/usb/host/uhci-hub.c
+++ b/drivers/usb/host/uhci-hub.c
@@ -99,6 +99,21 @@ static void uhci_finish_suspend(struct uhci_hcd *uhci, int port,
         }
 }
 
+/* Wait for the UHCI controller in HP's iLO2 server management chip.
+ * It can take up to 250 us to finish a reset and set the CSC bit.
+ */
+static void wait_for_HP(unsigned long port_addr)
+{
+        int i;
+
+        for (i = 10; i < 250; i += 10) {
+                if (inw(port_addr) & USBPORTSC_CSC)
+                        return;
+                udelay(10);
+        }
+        /* Log a warning? */
+}
+
 static void uhci_check_ports(struct uhci_hcd *uhci)
 {
         unsigned int port;
@@ -113,6 +128,12 @@ static void uhci_check_ports(struct uhci_hcd *uhci)
                                 CLR_RH_PORTSTAT(USBPORTSC_PR);
                                 udelay(10);
 
+                                /* HP's server management chip requires
+                                 * a longer delay. */
+                                if (to_pci_dev(uhci_dev(uhci))->vendor ==
+                                                PCI_VENDOR_ID_HP)
+                                        wait_for_HP(port_addr);
+
                                 /* If the port was enabled before, turning
                                  * reset on caused a port enable change.
                                  * Turning reset off causes a port connect
diff --git a/drivers/usb/host/uhci-q.c b/drivers/usb/host/uhci-q.c
index 782398045f9f..a06d84c19e13 100644
--- a/drivers/usb/host/uhci-q.c
+++ b/drivers/usb/host/uhci-q.c
@@ -13,13 +13,9 @@
  * (C) Copyright 2000 Yggdrasil Computing, Inc. (port of new PCI interface
  *               support from usb-ohci.c by Adam Richter, adam@yggdrasil.com).
  * (C) Copyright 1999 Gregory P. Smith (from usb-ohci.c)
- * (C) Copyright 2004 Alan Stern, stern@rowland.harvard.edu
+ * (C) Copyright 2004-2005 Alan Stern, stern@rowland.harvard.edu
  */
 
-static int uhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb);
-static void uhci_unlink_generic(struct uhci_hcd *uhci, struct urb *urb);
-static void uhci_remove_pending_urbps(struct uhci_hcd *uhci);
-static void uhci_free_pending_qhs(struct uhci_hcd *uhci);
 static void uhci_free_pending_tds(struct uhci_hcd *uhci);
 
 /*
@@ -30,7 +26,7 @@ static void uhci_free_pending_tds(struct uhci_hcd *uhci);
  * games with the FSBR code to make sure we get the correct order in all
  * the cases. I don't think it's worth the effort
  */
-static inline void uhci_set_next_interrupt(struct uhci_hcd *uhci)
+static void uhci_set_next_interrupt(struct uhci_hcd *uhci)
 {
         if (uhci->is_stopped)
                 mod_timer(&uhci_to_hcd(uhci)->rh_timer, jiffies);
@@ -42,12 +38,6 @@ static inline void uhci_clear_next_interrupt(struct uhci_hcd *uhci)
         uhci->term_td->status &= ~cpu_to_le32(TD_CTRL_IOC);
 }
 
-static inline void uhci_moveto_complete(struct uhci_hcd *uhci, 
-                                        struct urb_priv *urbp)
-{
-        list_move_tail(&urbp->urb_list, &uhci->complete_list);
-}
-
 static struct uhci_td *uhci_alloc_td(struct uhci_hcd *uhci)
 {
         dma_addr_t dma_handle;
@@ -58,10 +48,6 @@ static struct uhci_td *uhci_alloc_td(struct uhci_hcd *uhci)
                 return NULL;
 
         td->dma_handle = dma_handle;
-
-        td->link = UHCI_PTR_TERM;
-        td->buffer = 0;
-
         td->frame = -1;
 
         INIT_LIST_HEAD(&td->list);
@@ -71,6 +57,18 @@ static struct uhci_td *uhci_alloc_td(struct uhci_hcd *uhci)
         return td;
 }
 
+static void uhci_free_td(struct uhci_hcd *uhci, struct uhci_td *td)
+{
+        if (!list_empty(&td->list))
+                dev_warn(uhci_dev(uhci), "td %p still in list!\n", td);
+        if (!list_empty(&td->remove_list))
+                dev_warn(uhci_dev(uhci), "td %p still in remove_list!\n", td);
+        if (!list_empty(&td->fl_list))
+                dev_warn(uhci_dev(uhci), "td %p still in fl_list!\n", td);
+
+        dma_pool_free(uhci->td_pool, td, td->dma_handle);
+}
+
 static inline void uhci_fill_td(struct uhci_td *td, u32 status,
                 u32 token, u32 buffer)
 {
@@ -82,7 +80,8 @@ static inline void uhci_fill_td(struct uhci_td *td, u32 status,
 /*
  * We insert Isochronous URBs directly into the frame list at the beginning
  */
-static void uhci_insert_td_frame_list(struct uhci_hcd *uhci, struct uhci_td *td, unsigned framenum)
+static inline void uhci_insert_td_in_frame_list(struct uhci_hcd *uhci,
+                struct uhci_td *td, unsigned framenum)
 {
         framenum &= (UHCI_NUMFRAMES - 1);
 
@@ -108,7 +107,7 @@ static void uhci_insert_td_frame_list(struct uhci_hcd *uhci, struct uhci_td *td,
         }
 }
 
-static inline void uhci_remove_td_frame_list(struct uhci_hcd *uhci,
+static inline void uhci_remove_td_from_frame_list(struct uhci_hcd *uhci,
                 struct uhci_td *td)
 {
         /* If it's not inserted, don't remove it */
@@ -139,48 +138,21 @@ static inline void uhci_remove_td_frame_list(struct uhci_hcd *uhci,
         td->frame = -1;
 }
 
-static void unlink_isochronous_tds(struct uhci_hcd *uhci, struct urb *urb)
+/*
+ * Remove all the TDs for an Isochronous URB from the frame list
+ */
+static void uhci_unlink_isochronous_tds(struct uhci_hcd *uhci, struct urb *urb)
 {
         struct urb_priv *urbp = (struct urb_priv *) urb->hcpriv;
         struct uhci_td *td;
 
         list_for_each_entry(td, &urbp->td_list, list)
-                uhci_remove_td_frame_list(uhci, td);
+                uhci_remove_td_from_frame_list(uhci, td);
         wmb();
 }
 
-/*
- * Inserts a td list into qh.
- */
-static void uhci_insert_tds_in_qh(struct uhci_qh *qh, struct urb *urb, __le32 breadth)
-{
-        struct urb_priv *urbp = (struct urb_priv *)urb->hcpriv;
-        struct uhci_td *td;
-        __le32 *plink;
-
-        /* Ordering isn't important here yet since the QH hasn't been */
-        /* inserted into the schedule yet */
-        plink = &qh->element;
-        list_for_each_entry(td, &urbp->td_list, list) {
-                *plink = cpu_to_le32(td->dma_handle) | breadth;
-                plink = &td->link;
-        }
-        *plink = UHCI_PTR_TERM;
-}
-
-static void uhci_free_td(struct uhci_hcd *uhci, struct uhci_td *td)
-{
-        if (!list_empty(&td->list))
-                dev_warn(uhci_dev(uhci), "td %p still in list!\n", td);
-        if (!list_empty(&td->remove_list))
-                dev_warn(uhci_dev(uhci), "td %p still in remove_list!\n", td);
-        if (!list_empty(&td->fl_list))
-                dev_warn(uhci_dev(uhci), "td %p still in fl_list!\n", td);
-
-        dma_pool_free(uhci->td_pool, td, td->dma_handle);
-}
-
-static struct uhci_qh *uhci_alloc_qh(struct uhci_hcd *uhci)
+static struct uhci_qh *uhci_alloc_qh(struct uhci_hcd *uhci,
+                struct usb_device *udev, struct usb_host_endpoint *hep)
 {
         dma_addr_t dma_handle;
         struct uhci_qh *qh;
@@ -194,256 +166,217 @@ static struct uhci_qh *uhci_alloc_qh(struct uhci_hcd *uhci)
         qh->element = UHCI_PTR_TERM;
         qh->link = UHCI_PTR_TERM;
 
-        qh->urbp = NULL;
-
-        INIT_LIST_HEAD(&qh->list);
-        INIT_LIST_HEAD(&qh->remove_list);
+        INIT_LIST_HEAD(&qh->queue);
+        INIT_LIST_HEAD(&qh->node);
 
+        if (udev) {             /* Normal QH */
+                qh->dummy_td = uhci_alloc_td(uhci);
+                if (!qh->dummy_td) {
+                        dma_pool_free(uhci->qh_pool, qh, dma_handle);
+                        return NULL;
+                }
+                qh->state = QH_STATE_IDLE;
+                qh->hep = hep;
+                qh->udev = udev;
+                hep->hcpriv = qh;
+
+        } else {                /* Skeleton QH */
+                qh->state = QH_STATE_ACTIVE;
+                qh->udev = NULL;
+        }
         return qh;
 }
 
 static void uhci_free_qh(struct uhci_hcd *uhci, struct uhci_qh *qh)
 {
-        if (!list_empty(&qh->list))
+        WARN_ON(qh->state != QH_STATE_IDLE && qh->udev);
+        if (!list_empty(&qh->queue))
                 dev_warn(uhci_dev(uhci), "qh %p list not empty!\n", qh);
-        if (!list_empty(&qh->remove_list))
-                dev_warn(uhci_dev(uhci), "qh %p still in remove_list!\n", qh);
 
+        list_del(&qh->node);
+        if (qh->udev) {
+                qh->hep->hcpriv = NULL;
+                uhci_free_td(uhci, qh->dummy_td);
+        }
         dma_pool_free(uhci->qh_pool, qh, qh->dma_handle);
 }
 
 /*
- * Append this urb's qh after the last qh in skelqh->list
- *
- * Note that urb_priv.queue_list doesn't have a separate queue head;
- * it's a ring with every element "live".
+ * When the currently executing URB is dequeued, save its current toggle value
  */
-static void uhci_insert_qh(struct uhci_hcd *uhci, struct uhci_qh *skelqh, struct urb *urb)
+static void uhci_save_toggle(struct uhci_qh *qh, struct urb *urb)
 {
-        struct urb_priv *urbp = (struct urb_priv *)urb->hcpriv;
-        struct urb_priv *turbp;
-        struct uhci_qh *lqh;
+        struct urb_priv *urbp = (struct urb_priv *) urb->hcpriv;
+        struct uhci_td *td;
 
-        /* Grab the last QH */
-        lqh = list_entry(skelqh->list.prev, struct uhci_qh, list);
+        /* If the QH element pointer is UHCI_PTR_TERM then then currently
+         * executing URB has already been unlinked, so this one isn't it. */
+        if (qh_element(qh) == UHCI_PTR_TERM ||
+                                qh->queue.next != &urbp->node)
+                return;
+        qh->element = UHCI_PTR_TERM;
 
-        /* Point to the next skelqh */
-        urbp->qh->link = lqh->link;
-        wmb();                          /* Ordering is important */
+        /* Only bulk and interrupt pipes have to worry about toggles */
+        if (!(usb_pipetype(urb->pipe) == PIPE_BULK ||
+                        usb_pipetype(urb->pipe) == PIPE_INTERRUPT))
+                return;
 
-        /*
-         * Patch QHs for previous endpoint's queued URBs?  HC goes
-         * here next, not to the next skelqh it now points to.
-         *
-         *    lqh --> td ... --> qh ... --> td --> qh ... --> td
-         *     |                 |                 |
-         *     v                 v                 v
-         *     +<----------------+-----------------+
-         *     v
-         *    newqh --> td ... --> td
-         *     |
-         *     v
-         *    ...
-         *
-         * The HC could see (and use!) any of these as we write them.
-         */
-        lqh->link = cpu_to_le32(urbp->qh->dma_handle) | UHCI_PTR_QH;
-        if (lqh->urbp) {
-                list_for_each_entry(turbp, &lqh->urbp->queue_list, queue_list)
-                        turbp->qh->link = lqh->link;
+        /* Find the first active TD; that's the device's toggle state */
+        list_for_each_entry(td, &urbp->td_list, list) {
+                if (td_status(td) & TD_CTRL_ACTIVE) {
+                        qh->needs_fixup = 1;
+                        qh->initial_toggle = uhci_toggle(td_token(td));
+                        return;
+                }
         }
 
-        list_add_tail(&urbp->qh->list, &skelqh->list);
+        WARN_ON(1);
 }
 
 /*
- * Start removal of QH from schedule; it finishes next frame.
- * TDs should be unlinked before this is called.
+ * Fix up the data toggles for URBs in a queue, when one of them
+ * terminates early (short transfer, error, or dequeued).
  */
-static void uhci_remove_qh(struct uhci_hcd *uhci, struct uhci_qh *qh)
+static void uhci_fixup_toggles(struct uhci_qh *qh, int skip_first)
 {
-        struct uhci_qh *pqh;
-        __le32 newlink;
-
-        if (!qh)
-                return;
-
-        /*
-         * Only go through the hoops if it's actually linked in
-         */
-        if (!list_empty(&qh->list)) {
-
-                /* If our queue is nonempty, make the next URB the head */
-                if (!list_empty(&qh->urbp->queue_list)) {
-                        struct urb_priv *nurbp;
-
-                        nurbp = list_entry(qh->urbp->queue_list.next,
-                                        struct urb_priv, queue_list);
-                        nurbp->queued = 0;
-                        list_add(&nurbp->qh->list, &qh->list);
-                        newlink = cpu_to_le32(nurbp->qh->dma_handle) | UHCI_PTR_QH;
-                } else
-                        newlink = qh->link;
-
-                /* Fix up the previous QH's queue to link to either
-                 * the new head of this queue or the start of the
-                 * next endpoint's queue. */
-                pqh = list_entry(qh->list.prev, struct uhci_qh, list);
-                pqh->link = newlink;
-                if (pqh->urbp) {
-                        struct urb_priv *turbp;
-
-                        list_for_each_entry(turbp, &pqh->urbp->queue_list,
-                                        queue_list)
-                                turbp->qh->link = newlink;
+        struct urb_priv *urbp = NULL;
+        struct uhci_td *td;
+        unsigned int toggle = qh->initial_toggle;
+        unsigned int pipe;
+
+        /* Fixups for a short transfer start with the second URB in the
+         * queue (the short URB is the first). */
+        if (skip_first)
+                urbp = list_entry(qh->queue.next, struct urb_priv, node);
+
+        /* When starting with the first URB, if the QH element pointer is
+         * still valid then we know the URB's toggles are okay. */
+        else if (qh_element(qh) != UHCI_PTR_TERM)
+                toggle = 2;
+
+        /* Fix up the toggle for the URBs in the queue.  Normally this
+         * loop won't run more than once: When an error or short transfer
+         * occurs, the queue usually gets emptied. */
+        urbp = list_prepare_entry(urbp, &qh->queue, node);
+        list_for_each_entry_continue(urbp, &qh->queue, node) {
+
+                /* If the first TD has the right toggle value, we don't
+                 * need to change any toggles in this URB */
+                td = list_entry(urbp->td_list.next, struct uhci_td, list);
+                if (toggle > 1 || uhci_toggle(td_token(td)) == toggle) {
+                        td = list_entry(urbp->td_list.next, struct uhci_td,
+                                        list);
+                        toggle = uhci_toggle(td_token(td)) ^ 1;
+
+                /* Otherwise all the toggles in the URB have to be switched */
+                } else {
+                        list_for_each_entry(td, &urbp->td_list, list) {
+                                td->token ^= __constant_cpu_to_le32(
+                                                        TD_TOKEN_TOGGLE);
+                                toggle ^= 1;
+                        }
                 }
-                wmb();
-
-                /* Leave qh->link in case the HC is on the QH now, it will */
-                /* continue the rest of the schedule */
-                qh->element = UHCI_PTR_TERM;
-
-                list_del_init(&qh->list);
-        }
-
-        list_del_init(&qh->urbp->queue_list);
-        qh->urbp = NULL;
-
-        uhci_get_current_frame_number(uhci);
-        if (uhci->frame_number + uhci->is_stopped != uhci->qh_remove_age) {
-                uhci_free_pending_qhs(uhci);
-                uhci->qh_remove_age = uhci->frame_number;
         }
 
-        /* Check to see if the remove list is empty. Set the IOC bit */
-        /* to force an interrupt so we can remove the QH */
-        if (list_empty(&uhci->qh_remove_list))
-                uhci_set_next_interrupt(uhci);
-
-        list_add(&qh->remove_list, &uhci->qh_remove_list);
+        wmb();
+        pipe = list_entry(qh->queue.next, struct urb_priv, node)->urb->pipe;
+        usb_settoggle(qh->udev, usb_pipeendpoint(pipe),
+                        usb_pipeout(pipe), toggle);
+        qh->needs_fixup = 0;
 }
 
-static int uhci_fixup_toggle(struct urb *urb, unsigned int toggle)
+/*
+ * Put a QH on the schedule in both hardware and software
+ */
+static void uhci_activate_qh(struct uhci_hcd *uhci, struct uhci_qh *qh)
 {
-        struct urb_priv *urbp = (struct urb_priv *)urb->hcpriv;
-        struct uhci_td *td;
-
-        list_for_each_entry(td, &urbp->td_list, list) {
-                if (toggle)
-                        td->token |= cpu_to_le32(TD_TOKEN_TOGGLE);
-                else
-                        td->token &= ~cpu_to_le32(TD_TOKEN_TOGGLE);
-
-                toggle ^= 1;
-        }
-
-        return toggle;
-}
+        struct uhci_qh *pqh;
 
-/* This function will append one URB's QH to another URB's QH. This is for */
-/* queuing interrupt, control or bulk transfers */
-static void uhci_append_queued_urb(struct uhci_hcd *uhci, struct urb *eurb, struct urb *urb)
-{
-        struct urb_priv *eurbp, *urbp, *furbp, *lurbp;
-        struct uhci_td *lltd;
+        WARN_ON(list_empty(&qh->queue));
 
-        eurbp = eurb->hcpriv;
-        urbp = urb->hcpriv;
+        /* Set the element pointer if it isn't set already.
+         * This isn't needed for Isochronous queues, but it doesn't hurt. */
+        if (qh_element(qh) == UHCI_PTR_TERM) {
+                struct urb_priv *urbp = list_entry(qh->queue.next,
+                                struct urb_priv, node);
+                struct uhci_td *td = list_entry(urbp->td_list.next,
+                                struct uhci_td, list);
 
-        /* Find the first URB in the queue */
-        furbp = eurbp;
-        if (eurbp->queued) {
-                list_for_each_entry(furbp, &eurbp->queue_list, queue_list)
-                        if (!furbp->queued)
-                                break;
+                qh->element = cpu_to_le32(td->dma_handle);
         }
 
-        lurbp = list_entry(furbp->queue_list.prev, struct urb_priv, queue_list);
-
-        lltd = list_entry(lurbp->td_list.prev, struct uhci_td, list);
-
-        /* Control transfers always start with toggle 0 */
-        if (!usb_pipecontrol(urb->pipe))
-                usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
-                                usb_pipeout(urb->pipe),
-                                uhci_fixup_toggle(urb,
-                                        uhci_toggle(td_token(lltd)) ^ 1));
-
-        /* All qhs in the queue need to link to the next queue */
-        urbp->qh->link = eurbp->qh->link;
-
-        wmb();                  /* Make sure we flush everything */
-
-        lltd->link = cpu_to_le32(urbp->qh->dma_handle) | UHCI_PTR_QH;
-
-        list_add_tail(&urbp->queue_list, &furbp->queue_list);
-
-        urbp->queued = 1;
+        if (qh->state == QH_STATE_ACTIVE)
+                return;
+        qh->state = QH_STATE_ACTIVE;
+
+        /* Move the QH from its old list to the end of the appropriate
+         * skeleton's list */
+        if (qh == uhci->next_qh)
+                uhci->next_qh = list_entry(qh->node.next, struct uhci_qh,
+                                node);
+        list_move_tail(&qh->node, &qh->skel->node);
+
+        /* Link it into the schedule */
+        pqh = list_entry(qh->node.prev, struct uhci_qh, node);
+        qh->link = pqh->link;
+        wmb();
+        pqh->link = UHCI_PTR_QH | cpu_to_le32(qh->dma_handle);
 }
 
-static void uhci_delete_queued_urb(struct uhci_hcd *uhci, struct urb *urb)
+/*
+ * Take a QH off the hardware schedule
+ */
+static void uhci_unlink_qh(struct uhci_hcd *uhci, struct uhci_qh *qh)
 {
-        struct urb_priv *urbp, *nurbp, *purbp, *turbp;
-        struct uhci_td *pltd;
-        unsigned int toggle;
-
-        urbp = urb->hcpriv;
+        struct uhci_qh *pqh;
 
-        if (list_empty(&urbp->queue_list))
+        if (qh->state == QH_STATE_UNLINKING)
                 return;
+        WARN_ON(qh->state != QH_STATE_ACTIVE || !qh->udev);
+        qh->state = QH_STATE_UNLINKING;
 
-        nurbp = list_entry(urbp->queue_list.next, struct urb_priv, queue_list);
+        /* Unlink the QH from the schedule and record when we did it */
+        pqh = list_entry(qh->node.prev, struct uhci_qh, node);
+        pqh->link = qh->link;
+        mb();
 
-        /*
-         * Fix up the toggle for the following URBs in the queue.
-         * Only needed for bulk and interrupt: control and isochronous
-         * endpoints don't propagate toggles between messages.
-         */
-        if (usb_pipebulk(urb->pipe) || usb_pipeint(urb->pipe)) {
-                if (!urbp->queued)
-                        /* We just set the toggle in uhci_unlink_generic */
-                        toggle = usb_gettoggle(urb->dev,
-                                        usb_pipeendpoint(urb->pipe),
-                                        usb_pipeout(urb->pipe));
-                else {
-                        /* If we're in the middle of the queue, grab the */
-                        /* toggle from the TD previous to us */
-                        purbp = list_entry(urbp->queue_list.prev,
-                                        struct urb_priv, queue_list);
-                        pltd = list_entry(purbp->td_list.prev,
-                                        struct uhci_td, list);
-                        toggle = uhci_toggle(td_token(pltd)) ^ 1;
-                }
+        uhci_get_current_frame_number(uhci);
+        qh->unlink_frame = uhci->frame_number;
 
-                list_for_each_entry(turbp, &urbp->queue_list, queue_list) {
-                        if (!turbp->queued)
-                                break;
-                        toggle = uhci_fixup_toggle(turbp->urb, toggle);
-                }
+        /* Force an interrupt so we know when the QH is fully unlinked */
+        if (list_empty(&uhci->skel_unlink_qh->node))
+                uhci_set_next_interrupt(uhci);
 
-                usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
-                                usb_pipeout(urb->pipe), toggle);
-        }
+        /* Move the QH from its old list to the end of the unlinking list */
+        if (qh == uhci->next_qh)
+                uhci->next_qh = list_entry(qh->node.next, struct uhci_qh,
+                                node);
+        list_move_tail(&qh->node, &uhci->skel_unlink_qh->node);
+}
 
-        if (urbp->queued) {
-                /* We're somewhere in the middle (or end).  The case where
-                 * we're at the head is handled in uhci_remove_qh(). */
-                purbp = list_entry(urbp->queue_list.prev, struct urb_priv,
-                                queue_list);
+/*
+ * When we and the controller are through with a QH, it becomes IDLE.
+ * This happens when a QH has been off the schedule (on the unlinking
+ * list) for more than one frame, or when an error occurs while adding
+ * the first URB onto a new QH.
+ */
+static void uhci_make_qh_idle(struct uhci_hcd *uhci, struct uhci_qh *qh)
+{
+        WARN_ON(qh->state == QH_STATE_ACTIVE);
 
-                pltd = list_entry(purbp->td_list.prev, struct uhci_td, list);
-                if (nurbp->queued)
-                        pltd->link = cpu_to_le32(nurbp->qh->dma_handle) | UHCI_PTR_QH;
-                else
-                        /* The next URB happens to be the beginning, so */
-                        /*  we're the last, end the chain */
-                        pltd->link = UHCI_PTR_TERM;
-        }
+        if (qh == uhci->next_qh)
+                uhci->next_qh = list_entry(qh->node.next, struct uhci_qh,
+                                node);
+        list_move(&qh->node, &uhci->idle_qh_list);
+        qh->state = QH_STATE_IDLE;
 
-        /* urbp->queue_list is handled in uhci_remove_qh() */
+        /* If anyone is waiting for a QH to become idle, wake them up */
+        if (uhci->num_waiting)
+                wake_up_all(&uhci->waitqh);
 }
 
-static struct urb_priv *uhci_alloc_urb_priv(struct uhci_hcd *uhci, struct urb *urb)
+static inline struct urb_priv *uhci_alloc_urb_priv(struct uhci_hcd *uhci,
+                struct urb *urb)
 {
         struct urb_priv *urbp;
 
@@ -453,16 +386,11 @@ static struct urb_priv *uhci_alloc_urb_priv(struct uhci_hcd *uhci, struct urb *u
 
         memset((void *)urbp, 0, sizeof(*urbp));
 
-        urbp->fsbrtime = jiffies;
         urbp->urb = urb;
+        urb->hcpriv = urbp;
         
+        INIT_LIST_HEAD(&urbp->node);
         INIT_LIST_HEAD(&urbp->td_list);
-        INIT_LIST_HEAD(&urbp->queue_list);
-        INIT_LIST_HEAD(&urbp->urb_list);
-
-        list_add_tail(&urbp->urb_list, &uhci->urb_list);
-
-        urb->hcpriv = urbp;
 
         return urbp;
 }
@@ -482,18 +410,14 @@ static void uhci_remove_td_from_urb(struct uhci_td *td)
         list_del_init(&td->list);
 }
 
-static void uhci_destroy_urb_priv(struct uhci_hcd *uhci, struct urb *urb)
+static void uhci_free_urb_priv(struct uhci_hcd *uhci,
+                struct urb_priv *urbp)
 {
         struct uhci_td *td, *tmp;
-        struct urb_priv *urbp;
-
-        urbp = (struct urb_priv *)urb->hcpriv;
-        if (!urbp)
-                return;
 
-        if (!list_empty(&urbp->urb_list))
-                dev_warn(uhci_dev(uhci), "urb %p still on uhci->urb_list "
-                                "or uhci->remove_list!\n", urb);
+        if (!list_empty(&urbp->node))
+                dev_warn(uhci_dev(uhci), "urb %p still on QH's list!\n",
+                                urbp->urb);
 
         uhci_get_current_frame_number(uhci);
         if (uhci->frame_number + uhci->is_stopped != uhci->td_remove_age) {
@@ -502,7 +426,7 @@ static void uhci_destroy_urb_priv(struct uhci_hcd *uhci, struct urb *urb)
         }
 
         /* Check to see if the remove list is empty. Set the IOC bit */
-        /* to force an interrupt so we can remove the TDs*/
+        /* to force an interrupt so we can remove the TDs. */
         if (list_empty(&uhci->td_remove_list))
                 uhci_set_next_interrupt(uhci);
 
@@ -511,7 +435,7 @@ static void uhci_destroy_urb_priv(struct uhci_hcd *uhci, struct urb *urb)
                 list_add(&td->remove_list, &uhci->td_remove_list);
         }
 
-        urb->hcpriv = NULL;
+        urbp->urb->hcpriv = NULL;
         kmem_cache_free(uhci_up_cachep, urbp);
 }
 
@@ -570,34 +494,33 @@ static int uhci_map_status(int status, int dir_out)
 /*
  * Control transfers
  */
-static int uhci_submit_control(struct uhci_hcd *uhci, struct urb *urb, struct urb *eurb)
+static int uhci_submit_control(struct uhci_hcd *uhci, struct urb *urb,
+                struct uhci_qh *qh)
 {
-        struct urb_priv *urbp = (struct urb_priv *)urb->hcpriv;
         struct uhci_td *td;
-        struct uhci_qh *qh, *skelqh;
         unsigned long destination, status;
-        int maxsze = usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe));
+        int maxsze = le16_to_cpu(qh->hep->desc.wMaxPacketSize);
         int len = urb->transfer_buffer_length;
         dma_addr_t data = urb->transfer_dma;
+        __le32 *plink;
 
         /* The "pipe" thing contains the destination in bits 8--18 */
         destination = (urb->pipe & PIPE_DEVEP_MASK) | USB_PID_SETUP;
 
-        /* 3 errors */
-        status = TD_CTRL_ACTIVE | uhci_maxerr(3);
+        /* 3 errors, dummy TD remains inactive */
+        status = uhci_maxerr(3);
         if (urb->dev->speed == USB_SPEED_LOW)
                 status |= TD_CTRL_LS;
 
         /*
          * Build the TD for the control request setup packet
          */
-        td = uhci_alloc_td(uhci);
-        if (!td)
-                return -ENOMEM;
-
+        td = qh->dummy_td;
         uhci_add_td_to_urb(urb, td);
         uhci_fill_td(td, status, destination | uhci_explen(8),
-                urb->setup_dma);
+                        urb->setup_dma);
+        plink = &td->link;
+        status |= TD_CTRL_ACTIVE;
 
         /*
          * If direction is "send", change the packet ID from SETUP (0x2D)
@@ -615,21 +538,20 @@ static int uhci_submit_control(struct uhci_hcd *uhci, struct urb *urb, struct ur
          * Build the DATA TDs
          */
         while (len > 0) {
-                int pktsze = len;
-
-                if (pktsze > maxsze)
-                        pktsze = maxsze;
+                int pktsze = min(len, maxsze);
 
                 td = uhci_alloc_td(uhci);
                 if (!td)
-                        return -ENOMEM;
+                        goto nomem;
+                *plink = cpu_to_le32(td->dma_handle);
 
                 /* Alternate Data0/1 (start with Data1) */
                 destination ^= TD_TOKEN_TOGGLE;
         
                 uhci_add_td_to_urb(urb, td);
                 uhci_fill_td(td, status, destination | uhci_explen(pktsze),
-                        data);
+                                data);
+                plink = &td->link;
 
                 data += pktsze;
                 len -= pktsze;
@@ -640,7 +562,8 @@ static int uhci_submit_control(struct uhci_hcd *uhci, struct urb *urb, struct ur
          */
         td = uhci_alloc_td(uhci);
         if (!td)
-                return -ENOMEM;
+                goto nomem;
+        *plink = cpu_to_le32(td->dma_handle);
 
         /*
          * It's IN if the pipe is an output pipe or we're not expecting
@@ -658,16 +581,21 @@ static int uhci_submit_control(struct uhci_hcd *uhci, struct urb *urb, struct ur
 
         uhci_add_td_to_urb(urb, td);
         uhci_fill_td(td, status | TD_CTRL_IOC,
-                destination | uhci_explen(0), 0);
-
-        qh = uhci_alloc_qh(uhci);
-        if (!qh)
-                return -ENOMEM;
+                        destination | uhci_explen(0), 0);
+        plink = &td->link;
 
-        urbp->qh = qh;
-        qh->urbp = urbp;
+        /*
+         * Build the new dummy TD and activate the old one
+         */
+        td = uhci_alloc_td(uhci);
+        if (!td)
+                goto nomem;
+        *plink = cpu_to_le32(td->dma_handle);
 
-        uhci_insert_tds_in_qh(qh, urb, UHCI_PTR_BREADTH);
+        uhci_fill_td(td, 0, USB_PID_OUT | uhci_explen(0), 0);
+        wmb();
+        qh->dummy_td->status |= __constant_cpu_to_le32(TD_CTRL_ACTIVE);
+        qh->dummy_td = td;
 
         /* Low-speed transfers get a different queue, and won't hog the bus.
          * Also, some devices enumerate better without FSBR; the easiest way
@@ -675,18 +603,17 @@ static int uhci_submit_control(struct uhci_hcd *uhci, struct urb *urb, struct ur
          * isn't in the CONFIGURED state. */
         if (urb->dev->speed == USB_SPEED_LOW ||
                         urb->dev->state != USB_STATE_CONFIGURED)
-                skelqh = uhci->skel_ls_control_qh;
+                qh->skel = uhci->skel_ls_control_qh;
         else {
-                skelqh = uhci->skel_fs_control_qh;
+                qh->skel = uhci->skel_fs_control_qh;
                 uhci_inc_fsbr(uhci, urb);
         }
+        return 0;
 
-        if (eurb)
-                uhci_append_queued_urb(uhci, eurb, urb);
-        else
-                uhci_insert_qh(uhci, skelqh, urb);
-
-        return -EINPROGRESS;
+nomem:
+        /* Remove the dummy TD from the td_list so it doesn't get freed */
+        uhci_remove_td_from_urb(qh->dummy_td);
+        return -ENOMEM;
 }
 
 /*
@@ -703,7 +630,7 @@ static int usb_control_retrigger_status(struct uhci_hcd *uhci, struct urb *urb)
         struct urb_priv *urbp = (struct urb_priv *)urb->hcpriv;
         struct uhci_td *td;
 
-        urbp->short_control_packet = 1;
+        urbp->short_transfer = 1;
 
         td = list_entry(urbp->td_list.prev, struct uhci_td, list);
         urbp->qh->element = cpu_to_le32(td->dma_handle);
@@ -720,16 +647,14 @@ static int uhci_result_control(struct uhci_hcd *uhci, struct urb *urb)
         unsigned int status;
         int ret = 0;
 
-        if (list_empty(&urbp->td_list))
-                return -EINVAL;
-
         head = &urbp->td_list;
-
-        if (urbp->short_control_packet) {
+        if (urbp->short_transfer) {
                 tmp = head->prev;
                 goto status_stage;
         }
 
+        urb->actual_length = 0;
+
         tmp = head->next;
         td = list_entry(tmp, struct uhci_td, list);
 
@@ -742,8 +667,6 @@ static int uhci_result_control(struct uhci_hcd *uhci, struct urb *urb)
         if (status)
                 goto td_error;
 
-        urb->actual_length = 0;
-
         /* The rest of the TDs (but the last) are data */
         tmp = tmp->next;
         while (tmp != head && tmp->next != head) {
@@ -770,10 +693,7 @@ static int uhci_result_control(struct uhci_hcd *uhci, struct urb *urb)
                                 goto err;
                         }
 
-                        if (uhci_packetid(td_token(td)) == USB_PID_IN)
-                                return usb_control_retrigger_status(uhci, urb);
-                        else
-                                return 0;
+                        return usb_control_retrigger_status(uhci, urb);
                 }
         }
 
@@ -814,34 +734,40 @@ err:
                 if (errbuf) {
                         /* Print the chain for debugging purposes */
                         uhci_show_qh(urbp->qh, errbuf, ERRBUF_LEN, 0);
-
                         lprintk(errbuf);
                 }
         }
 
+        /* Note that the queue has stopped */
+        urbp->qh->element = UHCI_PTR_TERM;
+        urbp->qh->is_stopped = 1;
         return ret;
 }
 
 /*
  * Common submit for bulk and interrupt
  */
-static int uhci_submit_common(struct uhci_hcd *uhci, struct urb *urb, struct urb *eurb, struct uhci_qh *skelqh)
+static int uhci_submit_common(struct uhci_hcd *uhci, struct urb *urb,
+                struct uhci_qh *qh)
 {
         struct uhci_td *td;
-        struct uhci_qh *qh;
         unsigned long destination, status;
-        int maxsze = usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe));
+        int maxsze = le16_to_cpu(qh->hep->desc.wMaxPacketSize);
         int len = urb->transfer_buffer_length;
-        struct urb_priv *urbp = (struct urb_priv *)urb->hcpriv;
         dma_addr_t data = urb->transfer_dma;
+        __le32 *plink;
+        unsigned int toggle;
 
         if (len < 0)
                 return -EINVAL;
 
         /* The "pipe" thing contains the destination in bits 8--18 */
         destination = (urb->pipe & PIPE_DEVEP_MASK) | usb_packetid(urb->pipe);
+        toggle = usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe),
+                         usb_pipeout(urb->pipe));
 
-        status = uhci_maxerr(3) | TD_CTRL_ACTIVE;
+        /* 3 errors, dummy TD remains inactive */
+        status = uhci_maxerr(3);
         if (urb->dev->speed == USB_SPEED_LOW)
                 status |= TD_CTRL_LS;
         if (usb_pipein(urb->pipe))
@@ -850,30 +776,34 @@ static int uhci_submit_common(struct uhci_hcd *uhci, struct urb *urb, struct urb
         /*
          * Build the DATA TDs
          */
+        plink = NULL;
+        td = qh->dummy_td;
         do {    /* Allow zero length packets */
                 int pktsze = maxsze;
 
-                if (pktsze >= len) {
+                if (len <= pktsze) {            /* The last packet */
                         pktsze = len;
                         if (!(urb->transfer_flags & URB_SHORT_NOT_OK))
                                 status &= ~TD_CTRL_SPD;
                 }
 
-                td = uhci_alloc_td(uhci);
-                if (!td)
-                        return -ENOMEM;
-
+                if (plink) {
+                        td = uhci_alloc_td(uhci);
+                        if (!td)
+                                goto nomem;
+                        *plink = cpu_to_le32(td->dma_handle);
+                }
                 uhci_add_td_to_urb(urb, td);
-                uhci_fill_td(td, status, destination | uhci_explen(pktsze) |
-                        (usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe),
-                         usb_pipeout(urb->pipe)) << TD_TOKEN_TOGGLE_SHIFT),
-                        data);
+                uhci_fill_td(td, status,
+                                destination | uhci_explen(pktsze) |
+                                        (toggle << TD_TOKEN_TOGGLE_SHIFT),
+                                data);
+                plink = &td->link;
+                status |= TD_CTRL_ACTIVE;
 
                 data += pktsze;
                 len -= maxsze;
-
-                usb_dotoggle(urb->dev, usb_pipeendpoint(urb->pipe),
-                        usb_pipeout(urb->pipe));
+                toggle ^= 1;
         } while (len > 0);
 
         /*
@@ -883,20 +813,22 @@ static int uhci_submit_common(struct uhci_hcd *uhci, struct urb *urb, struct urb
          * however, if transfer_length == 0, the zero packet was already
          * prepared above.
          */
-        if (usb_pipeout(urb->pipe) && (urb->transfer_flags & URB_ZERO_PACKET) &&
-            !len && urb->transfer_buffer_length) {
+        if ((urb->transfer_flags & URB_ZERO_PACKET) &&
+                        usb_pipeout(urb->pipe) && len == 0 &&
+                        urb->transfer_buffer_length > 0) {
                 td = uhci_alloc_td(uhci);
                 if (!td)
-                        return -ENOMEM;
+                        goto nomem;
+                *plink = cpu_to_le32(td->dma_handle);
 
                 uhci_add_td_to_urb(urb, td);
-                uhci_fill_td(td, status, destination | uhci_explen(0) |
-                        (usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe),
-                         usb_pipeout(urb->pipe)) << TD_TOKEN_TOGGLE_SHIFT),
-                        data);
+                uhci_fill_td(td, status,
+                                destination | uhci_explen(0) |
+                                        (toggle << TD_TOKEN_TOGGLE_SHIFT),
+                                data);
+                plink = &td->link;
 
-                usb_dotoggle(urb->dev, usb_pipeendpoint(urb->pipe),
-                        usb_pipeout(urb->pipe));
+                toggle ^= 1;
         }
 
         /* Set the interrupt-on-completion flag on the last packet.
@@ -905,24 +837,29 @@ static int uhci_submit_common(struct uhci_hcd *uhci, struct urb *urb, struct urb
          * fast side but not enough to justify delaying an interrupt
          * more than 2 or 3 URBs, so we will ignore the URB_NO_INTERRUPT
          * flag setting. */
-        td->status |= cpu_to_le32(TD_CTRL_IOC);
+        td->status |= __constant_cpu_to_le32(TD_CTRL_IOC);
 
-        qh = uhci_alloc_qh(uhci);
-        if (!qh)
-                return -ENOMEM;
-
-        urbp->qh = qh;
-        qh->urbp = urbp;
+        /*
+         * Build the new dummy TD and activate the old one
+         */
+        td = uhci_alloc_td(uhci);
+        if (!td)
+                goto nomem;
+        *plink = cpu_to_le32(td->dma_handle);
 
-        /* Always breadth first */
-        uhci_insert_tds_in_qh(qh, urb, UHCI_PTR_BREADTH);
+        uhci_fill_td(td, 0, USB_PID_OUT | uhci_explen(0), 0);
+        wmb();
+        qh->dummy_td->status |= __constant_cpu_to_le32(TD_CTRL_ACTIVE);
+        qh->dummy_td = td;
 
-        if (eurb)
-                uhci_append_queued_urb(uhci, eurb, urb);
-        else
-                uhci_insert_qh(uhci, skelqh, urb);
+        usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
+                        usb_pipeout(urb->pipe), toggle);
+        return 0;
 
-        return -EINPROGRESS;
+nomem:
+        /* Remove the dummy TD from the td_list so it doesn't get freed */
+        uhci_remove_td_from_urb(qh->dummy_td);
+        return -ENOMEM;
 }
 
 /*
@@ -954,8 +891,27 @@ static int uhci_result_common(struct uhci_hcd *uhci, struct urb *urb)
                         if (urb->transfer_flags & URB_SHORT_NOT_OK) {
                                 ret = -EREMOTEIO;
                                 goto err;
-                        } else
-                                return 0;
+                        }
+
+                        /*
+                         * This URB stopped short of its end.  We have to
+                         * fix up the toggles of the following URBs on the
+                         * queue and restart the queue.
+                         *
+                         * Do this only the first time we encounter the
+                         * short URB.
+                         */
+                        if (!urbp->short_transfer) {
+                                urbp->short_transfer = 1;
+                                urbp->qh->initial_toggle =
+                                                uhci_toggle(td_token(td)) ^ 1;
+                                uhci_fixup_toggles(urbp->qh, 1);
+
+                                td = list_entry(urbp->td_list.prev,
+                                                struct uhci_td, list);
+                                urbp->qh->element = td->link;
+                        }
+                        break;
                 }
         }
 
@@ -964,31 +920,30 @@ static int uhci_result_common(struct uhci_hcd *uhci, struct urb *urb)
 td_error:
         ret = uhci_map_status(status, uhci_packetout(td_token(td)));
 
-err:
-        /* 
-         * Enable this chunk of code if you want to see some more debugging.
-         * But be careful, it has the tendancy to starve out khubd and prevent
-         * disconnects from happening successfully if you have a slow debug
-         * log interface (like a serial console.
-         */
-#if 0
         if ((debug == 1 && ret != -EPIPE) || debug > 1) {
                 /* Some debugging code */
                 dev_dbg(uhci_dev(uhci), "%s: failed with status %x\n",
                                 __FUNCTION__, status);
 
-                if (errbuf) {
+                if (debug > 1 && errbuf) {
                         /* Print the chain for debugging purposes */
                         uhci_show_qh(urbp->qh, errbuf, ERRBUF_LEN, 0);
-
                         lprintk(errbuf);
                 }
         }
-#endif
+err:
+
+        /* Note that the queue has stopped and save the next toggle value */
+        urbp->qh->element = UHCI_PTR_TERM;
+        urbp->qh->is_stopped = 1;
+        urbp->qh->needs_fixup = 1;
+        urbp->qh->initial_toggle = uhci_toggle(td_token(td)) ^
+                        (ret == -EREMOTEIO);
         return ret;
 }
 
-static inline int uhci_submit_bulk(struct uhci_hcd *uhci, struct urb *urb, struct urb *eurb)
+static inline int uhci_submit_bulk(struct uhci_hcd *uhci, struct urb *urb,
+                struct uhci_qh *qh)
 {
         int ret;
 
@@ -996,95 +951,60 @@ static inline int uhci_submit_bulk(struct uhci_hcd *uhci, struct urb *urb, struc
         if (urb->dev->speed == USB_SPEED_LOW)
                 return -EINVAL;
 
-        ret = uhci_submit_common(uhci, urb, eurb, uhci->skel_bulk_qh);
-        if (ret == -EINPROGRESS)
+        qh->skel = uhci->skel_bulk_qh;
+        ret = uhci_submit_common(uhci, urb, qh);
+        if (ret == 0)
                 uhci_inc_fsbr(uhci, urb);
-
         return ret;
 }
 
-static inline int uhci_submit_interrupt(struct uhci_hcd *uhci, struct urb *urb, struct urb *eurb)
+static inline int uhci_submit_interrupt(struct uhci_hcd *uhci, struct urb *urb,
+                struct uhci_qh *qh)
 {
-        /* USB 1.1 interrupt transfers only involve one packet per interval;
-         * that's the uhci_submit_common() "breadth first" policy.  Drivers
-         * can submit urbs of any length, but longer ones might need many
-         * intervals to complete.
+        /* USB 1.1 interrupt transfers only involve one packet per interval.
+         * Drivers can submit URBs of any length, but longer ones will need
+         * multiple intervals to complete.
          */
-        return uhci_submit_common(uhci, urb, eurb, uhci->skelqh[__interval_to_skel(urb->interval)]);
+        qh->skel = uhci->skelqh[__interval_to_skel(urb->interval)];
+        return uhci_submit_common(uhci, urb, qh);
 }
 
 /*
  * Isochronous transfers
  */
-static int isochronous_find_limits(struct uhci_hcd *uhci, struct urb *urb, unsigned int *start, unsigned int *end)
-{
-        struct urb *last_urb = NULL;
-        struct urb_priv *up;
-        int ret = 0;
-
-        list_for_each_entry(up, &uhci->urb_list, urb_list) {
-                struct urb *u = up->urb;
-
-                /* look for pending URBs with identical pipe handle */
-                if ((urb->pipe == u->pipe) && (urb->dev == u->dev) &&
-                    (u->status == -EINPROGRESS) && (u != urb)) {
-                        if (!last_urb)
-                                *start = u->start_frame;
-                        last_urb = u;
-                }
-        }
-
-        if (last_urb) {
-                *end = (last_urb->start_frame + last_urb->number_of_packets *
-                                last_urb->interval) & (UHCI_NUMFRAMES-1);
-                ret = 0;
-        } else
-                ret = -1;       /* no previous urb found */
-
-        return ret;
-}
-
-static int isochronous_find_start(struct uhci_hcd *uhci, struct urb *urb)
+static int uhci_submit_isochronous(struct uhci_hcd *uhci, struct urb *urb,
+                struct uhci_qh *qh)
 {
-        int limits;
-        unsigned int start = 0, end = 0;
+        struct uhci_td *td = NULL;      /* Since urb->number_of_packets > 0 */
+        int i, frame;
+        unsigned long destination, status;
+        struct urb_priv *urbp = (struct urb_priv *) urb->hcpriv;
 
         if (urb->number_of_packets > 900)       /* 900? Why? */
                 return -EFBIG;
 
-        limits = isochronous_find_limits(uhci, urb, &start, &end);
+        status = TD_CTRL_ACTIVE | TD_CTRL_IOS;
+        destination = (urb->pipe & PIPE_DEVEP_MASK) | usb_packetid(urb->pipe);
 
+        /* Figure out the starting frame number */
         if (urb->transfer_flags & URB_ISO_ASAP) {
-                if (limits) {
+                if (list_empty(&qh->queue)) {
                         uhci_get_current_frame_number(uhci);
-                        urb->start_frame = (uhci->frame_number + 10)
-                                        & (UHCI_NUMFRAMES - 1);
-                } else
-                        urb->start_frame = end;
+                        urb->start_frame = (uhci->frame_number + 10);
+
+                } else {                /* Go right after the last one */
+                        struct urb *last_urb;
+
+                        last_urb = list_entry(qh->queue.prev,
+                                        struct urb_priv, node)->urb;
+                        urb->start_frame = (last_urb->start_frame +
+                                        last_urb->number_of_packets *
+                                        last_urb->interval);
+                }
         } else {
-                urb->start_frame &= (UHCI_NUMFRAMES - 1);
                 /* FIXME: Sanity check */
         }
-
-        return 0;
-}
-
-/*
- * Isochronous transfers
- */
-static int uhci_submit_isochronous(struct uhci_hcd *uhci, struct urb *urb)
-{
-        struct uhci_td *td;
-        int i, ret, frame;
-        int status, destination;
-        struct urb_priv *urbp = (struct urb_priv *) urb->hcpriv;
-
-        status = TD_CTRL_ACTIVE | TD_CTRL_IOS;
-        destination = (urb->pipe & PIPE_DEVEP_MASK) | usb_packetid(urb->pipe);
-
-        ret = isochronous_find_start(uhci, urb);
-        if (ret)
-                return ret;
+        urb->start_frame &= (UHCI_NUMFRAMES - 1);
 
         for (i = 0; i < urb->number_of_packets; i++) {
                 td = uhci_alloc_td(uhci);
@@ -1092,20 +1012,25 @@ static int uhci_submit_isochronous(struct uhci_hcd *uhci, struct urb *urb)
                         return -ENOMEM;
 
                 uhci_add_td_to_urb(urb, td);
-                uhci_fill_td(td, status, destination | uhci_explen(urb->iso_frame_desc[i].length),
-                        urb->transfer_dma + urb->iso_frame_desc[i].offset);
-
-                if (i + 1 >= urb->number_of_packets)
-                        td->status |= cpu_to_le32(TD_CTRL_IOC);
+                uhci_fill_td(td, status, destination |
+                                uhci_explen(urb->iso_frame_desc[i].length),
+                                urb->transfer_dma +
+                                        urb->iso_frame_desc[i].offset);
         }
 
+        /* Set the interrupt-on-completion flag on the last packet. */
+        td->status |= __constant_cpu_to_le32(TD_CTRL_IOC);
+
+        qh->skel = uhci->skel_iso_qh;
+
+        /* Add the TDs to the frame list */
         frame = urb->start_frame;
         list_for_each_entry(td, &urbp->td_list, list) {
-                uhci_insert_td_frame_list(uhci, td, frame);
+                uhci_insert_td_in_frame_list(uhci, td, frame);
                 frame += urb->interval;
         }
 
-        return -EINPROGRESS;
+        return 0;
 }
 
 static int uhci_result_isochronous(struct uhci_hcd *uhci, struct urb *urb)
@@ -1139,80 +1064,67 @@ static int uhci_result_isochronous(struct uhci_hcd *uhci, struct urb *urb)
 
                 i++;
         }
-        unlink_isochronous_tds(uhci, urb);
 
         return ret;
 }
 
-static struct urb *uhci_find_urb_ep(struct uhci_hcd *uhci, struct urb *urb)
-{
-        struct urb_priv *up;
-
-        /* We don't match Isoc transfers since they are special */
-        if (usb_pipeisoc(urb->pipe))
-                return NULL;
-
-        list_for_each_entry(up, &uhci->urb_list, urb_list) {
-                struct urb *u = up->urb;
-
-                if (u->dev == urb->dev && u->status == -EINPROGRESS) {
-                        /* For control, ignore the direction */
-                        if (usb_pipecontrol(urb->pipe) &&
-                            (u->pipe & ~USB_DIR_IN) == (urb->pipe & ~USB_DIR_IN))
-                                return u;
-                        else if (u->pipe == urb->pipe)
-                                return u;
-                }
-        }
-
-        return NULL;
-}
-
 static int uhci_urb_enqueue(struct usb_hcd *hcd,
-                struct usb_host_endpoint *ep,
+                struct usb_host_endpoint *hep,
                 struct urb *urb, gfp_t mem_flags)
 {
         int ret;
         struct uhci_hcd *uhci = hcd_to_uhci(hcd);
         unsigned long flags;
-        struct urb *eurb;
+        struct urb_priv *urbp;
+        struct uhci_qh *qh;
         int bustime;
 
         spin_lock_irqsave(&uhci->lock, flags);
 
         ret = urb->status;
         if (ret != -EINPROGRESS)                /* URB already unlinked! */
-                goto out;
+                goto done;
 
-        eurb = uhci_find_urb_ep(uhci, urb);
+        ret = -ENOMEM;
+        urbp = uhci_alloc_urb_priv(uhci, urb);
+        if (!urbp)
+                goto done;
 
-        if (!uhci_alloc_urb_priv(uhci, urb)) {
-                ret = -ENOMEM;
-                goto out;
+        if (hep->hcpriv)
+                qh = (struct uhci_qh *) hep->hcpriv;
+        else {
+                qh = uhci_alloc_qh(uhci, urb->dev, hep);
+                if (!qh)
+                        goto err_no_qh;
         }
+        urbp->qh = qh;
 
         switch (usb_pipetype(urb->pipe)) {
         case PIPE_CONTROL:
-                ret = uhci_submit_control(uhci, urb, eurb);
+                ret = uhci_submit_control(uhci, urb, qh);
+                break;
+        case PIPE_BULK:
+                ret = uhci_submit_bulk(uhci, urb, qh);
                 break;
         case PIPE_INTERRUPT:
-                if (!eurb) {
+                if (list_empty(&qh->queue)) {
                         bustime = usb_check_bandwidth(urb->dev, urb);
                         if (bustime < 0)
                                 ret = bustime;
                         else {
-                                ret = uhci_submit_interrupt(uhci, urb, eurb);
-                                if (ret == -EINPROGRESS)
+                                ret = uhci_submit_interrupt(uhci, urb, qh);
+                                if (ret == 0)
                                         usb_claim_bandwidth(urb->dev, urb, bustime, 0);
                         }
                 } else {        /* inherit from parent */
-                        urb->bandwidth = eurb->bandwidth;
-                        ret = uhci_submit_interrupt(uhci, urb, eurb);
+                        struct urb_priv *eurbp;
+
+                        eurbp = list_entry(qh->queue.prev, struct urb_priv,
+                                        node);
+                        urb->bandwidth = eurbp->urb->bandwidth;
+                        ret = uhci_submit_interrupt(uhci, urb, qh);
                 }
                 break;
-        case PIPE_BULK:
-                ret = uhci_submit_bulk(uhci, urb, eurb);
-                break;
         case PIPE_ISOCHRONOUS:
                 bustime = usb_check_bandwidth(urb->dev, urb);
                 if (bustime < 0) {
@@ -1220,221 +1132,208 @@ static int uhci_urb_enqueue(struct usb_hcd *hcd,
                         break;
                 }
 
-                ret = uhci_submit_isochronous(uhci, urb);
-                if (ret == -EINPROGRESS)
+                ret = uhci_submit_isochronous(uhci, urb, qh);
+                if (ret == 0)
                         usb_claim_bandwidth(urb->dev, urb, bustime, 1);
                 break;
         }
+        if (ret != 0)
+                goto err_submit_failed;
+
+        /* Add this URB to the QH */
+        urbp->qh = qh;
+        list_add_tail(&urbp->node, &qh->queue);
 
-        if (ret != -EINPROGRESS) {
-                /* Submit failed, so delete it from the urb_list */
-                struct urb_priv *urbp = urb->hcpriv;
+        /* If the new URB is the first and only one on this QH then either
+         * the QH is new and idle or else it's unlinked and waiting to
+         * become idle, so we can activate it right away. */
+        if (qh->queue.next == &urbp->node)
+                uhci_activate_qh(uhci, qh);
+        goto done;
 
-                list_del_init(&urbp->urb_list);
-                uhci_destroy_urb_priv(uhci, urb);
-        } else
-                ret = 0;
+err_submit_failed:
+        if (qh->state == QH_STATE_IDLE)
+                uhci_make_qh_idle(uhci, qh);    /* Reclaim unused QH */
 
-out:
+err_no_qh:
+        uhci_free_urb_priv(uhci, urbp);
+
+done:
         spin_unlock_irqrestore(&uhci->lock, flags);
         return ret;
 }
 
-/*
- * Return the result of a transfer
- */
-static void uhci_transfer_result(struct uhci_hcd *uhci, struct urb *urb)
+static int uhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb)
 {
-        int ret = -EINPROGRESS;
+        struct uhci_hcd *uhci = hcd_to_uhci(hcd);
+        unsigned long flags;
         struct urb_priv *urbp;
 
-        spin_lock(&urb->lock);
+        spin_lock_irqsave(&uhci->lock, flags);
+        urbp = urb->hcpriv;
+        if (!urbp)                      /* URB was never linked! */
+                goto done;
+
+        /* Remove Isochronous TDs from the frame list ASAP */
+        if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS)
+                uhci_unlink_isochronous_tds(uhci, urb);
+        uhci_unlink_qh(uhci, urbp->qh);
+
+done:
+        spin_unlock_irqrestore(&uhci->lock, flags);
+        return 0;
+}
 
-        urbp = (struct urb_priv *)urb->hcpriv;
+/*
+ * Finish unlinking an URB and give it back
+ */
+static void uhci_giveback_urb(struct uhci_hcd *uhci, struct uhci_qh *qh,
+                struct urb *urb, struct pt_regs *regs)
+__releases(uhci->lock)
+__acquires(uhci->lock)
+{
+        struct urb_priv *urbp = (struct urb_priv *) urb->hcpriv;
 
-        if (urb->status != -EINPROGRESS)        /* URB already dequeued */
-                goto out;
+        /* Isochronous TDs get unlinked directly from the frame list */
+        if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS)
+                uhci_unlink_isochronous_tds(uhci, urb);
+
+        /* If the URB isn't first on its queue, adjust the link pointer
+         * of the last TD in the previous URB. */
+        else if (qh->queue.next != &urbp->node) {
+                struct urb_priv *purbp;
+                struct uhci_td *ptd, *ltd;
+
+                purbp = list_entry(urbp->node.prev, struct urb_priv, node);
+                ptd = list_entry(purbp->td_list.prev, struct uhci_td,
+                                list);
+                ltd = list_entry(urbp->td_list.prev, struct uhci_td,
+                                list);
+                ptd->link = ltd->link;
+        }
 
-        switch (usb_pipetype(urb->pipe)) {
-        case PIPE_CONTROL:
-                ret = uhci_result_control(uhci, urb);
-                break;
-        case PIPE_BULK:
-        case PIPE_INTERRUPT:
-                ret = uhci_result_common(uhci, urb);
-                break;
-        case PIPE_ISOCHRONOUS:
-                ret = uhci_result_isochronous(uhci, urb);
-                break;
+        /* Take the URB off the QH's queue.  If the queue is now empty,
+         * this is a perfect time for a toggle fixup. */
+        list_del_init(&urbp->node);
+        if (list_empty(&qh->queue) && qh->needs_fixup) {
+                usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
+                                usb_pipeout(urb->pipe), qh->initial_toggle);
+                qh->needs_fixup = 0;
         }
 
-        if (ret == -EINPROGRESS)
-                goto out;
-        urb->status = ret;
+        uhci_dec_fsbr(uhci, urb);       /* Safe since it checks */
+        uhci_free_urb_priv(uhci, urbp);
 
         switch (usb_pipetype(urb->pipe)) {
-        case PIPE_CONTROL:
-        case PIPE_BULK:
         case PIPE_ISOCHRONOUS:
                 /* Release bandwidth for Interrupt or Isoc. transfers */
                 if (urb->bandwidth)
                         usb_release_bandwidth(urb->dev, urb, 1);
-                uhci_unlink_generic(uhci, urb);
                 break;
         case PIPE_INTERRUPT:
                 /* Release bandwidth for Interrupt or Isoc. transfers */
                 /* Make sure we don't release if we have a queued URB */
-                if (list_empty(&urbp->queue_list) && urb->bandwidth)
+                if (list_empty(&qh->queue) && urb->bandwidth)
                         usb_release_bandwidth(urb->dev, urb, 0);
                 else
                         /* bandwidth was passed on to queued URB, */
                         /* so don't let usb_unlink_urb() release it */
                         urb->bandwidth = 0;
-                uhci_unlink_generic(uhci, urb);
                 break;
-        default:
-                dev_info(uhci_dev(uhci), "%s: unknown pipe type %d "
-                                "for urb %p\n",
-                                __FUNCTION__, usb_pipetype(urb->pipe), urb);
         }
 
-        /* Move it from uhci->urb_list to uhci->complete_list */
-        uhci_moveto_complete(uhci, urbp);
-
-out:
-        spin_unlock(&urb->lock);
-}
-
-static void uhci_unlink_generic(struct uhci_hcd *uhci, struct urb *urb)
-{
-        struct list_head *head;
-        struct uhci_td *td;
-        struct urb_priv *urbp = (struct urb_priv *)urb->hcpriv;
-        int prevactive = 0;
-
-        uhci_dec_fsbr(uhci, urb);       /* Safe since it checks */
+        spin_unlock(&uhci->lock);
+        usb_hcd_giveback_urb(uhci_to_hcd(uhci), urb, regs);
+        spin_lock(&uhci->lock);
 
-        /*
-         * Now we need to find out what the last successful toggle was
-         * so we can update the local data toggle for the next transfer
-         *
-         * There are 2 ways the last successful completed TD is found:
-         *
-         * 1) The TD is NOT active and the actual length < expected length
-         * 2) The TD is NOT active and it's the last TD in the chain
-         *
-         * and a third way the first uncompleted TD is found:
-         *
-         * 3) The TD is active and the previous TD is NOT active
-         *
-         * Control and Isochronous ignore the toggle, so this is safe
-         * for all types
-         *
-         * FIXME: The toggle fixups won't be 100% reliable until we
-         * change over to using a single queue for each endpoint and
-         * stop the queue before unlinking.
-         */
-        head = &urbp->td_list;
-        list_for_each_entry(td, head, list) {
-                unsigned int ctrlstat = td_status(td);
+        /* If the queue is now empty, we can unlink the QH and give up its
+         * reserved bandwidth. */
+        if (list_empty(&qh->queue)) {
+                uhci_unlink_qh(uhci, qh);
 
-                if (!(ctrlstat & TD_CTRL_ACTIVE) &&
-                                (uhci_actual_length(ctrlstat) <
-                                 uhci_expected_length(td_token(td)) ||
-                                td->list.next == head))
-                        usb_settoggle(urb->dev, uhci_endpoint(td_token(td)),
-                                uhci_packetout(td_token(td)),
-                                uhci_toggle(td_token(td)) ^ 1);
-                else if ((ctrlstat & TD_CTRL_ACTIVE) && !prevactive)
-                        usb_settoggle(urb->dev, uhci_endpoint(td_token(td)),
-                                uhci_packetout(td_token(td)),
-                                uhci_toggle(td_token(td)));
-
-                prevactive = ctrlstat & TD_CTRL_ACTIVE;
+                /* Bandwidth stuff not yet implemented */
         }
-
-        uhci_delete_queued_urb(uhci, urb);
-
-        /* The interrupt loop will reclaim the QHs */
-        uhci_remove_qh(uhci, urbp->qh);
-        urbp->qh = NULL;
 }
 
-static int uhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb)
+/*
+ * Scan the URBs in a QH's queue
+ */
+#define QH_FINISHED_UNLINKING(qh)                       \
+                (qh->state == QH_STATE_UNLINKING &&     \
+                uhci->frame_number + uhci->is_stopped != qh->unlink_frame)
+
+static void uhci_scan_qh(struct uhci_hcd *uhci, struct uhci_qh *qh,
+                struct pt_regs *regs)
 {
-        struct uhci_hcd *uhci = hcd_to_uhci(hcd);
-        unsigned long flags;
         struct urb_priv *urbp;
+        struct urb *urb;
+        int status;
 
-        spin_lock_irqsave(&uhci->lock, flags);
-        urbp = urb->hcpriv;
-        if (!urbp)                      /* URB was never linked! */
-                goto done;
-        list_del_init(&urbp->urb_list);
-
-        if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS)
-                unlink_isochronous_tds(uhci, urb);
-        uhci_unlink_generic(uhci, urb);
-
-        uhci_get_current_frame_number(uhci);
-        if (uhci->frame_number + uhci->is_stopped != uhci->urb_remove_age) {
-                uhci_remove_pending_urbps(uhci);
-                uhci->urb_remove_age = uhci->frame_number;
-        }
-
-        /* If we're the first, set the next interrupt bit */
-        if (list_empty(&uhci->urb_remove_list))
-                uhci_set_next_interrupt(uhci);
-        list_add_tail(&urbp->urb_list, &uhci->urb_remove_list);
-
-done:
-        spin_unlock_irqrestore(&uhci->lock, flags);
-        return 0;
-}
+        while (!list_empty(&qh->queue)) {
+                urbp = list_entry(qh->queue.next, struct urb_priv, node);
+                urb = urbp->urb;
 
-static int uhci_fsbr_timeout(struct uhci_hcd *uhci, struct urb *urb)
-{
-        struct urb_priv *urbp = (struct urb_priv *)urb->hcpriv;
-        struct list_head *head;
-        struct uhci_td *td;
-        int count = 0;
-
-        uhci_dec_fsbr(uhci, urb);
+                switch (usb_pipetype(urb->pipe)) {
+                case PIPE_CONTROL:
+                        status = uhci_result_control(uhci, urb);
+                        break;
+                case PIPE_ISOCHRONOUS:
+                        status = uhci_result_isochronous(uhci, urb);
+                        break;
+                default:        /* PIPE_BULK or PIPE_INTERRUPT */
+                        status = uhci_result_common(uhci, urb);
+                        break;
+                }
+                if (status == -EINPROGRESS)
+                        break;
 
-        urbp->fsbr_timeout = 1;
+                spin_lock(&urb->lock);
+                if (urb->status == -EINPROGRESS)        /* Not dequeued */
+                        urb->status = status;
+                else
+                        status = -ECONNRESET;
+                spin_unlock(&urb->lock);
 
-        /*
-         * Ideally we would want to fix qh->element as well, but it's
-         * read/write by the HC, so that can introduce a race. It's not
-         * really worth the hassle
-         */
+                /* Dequeued but completed URBs can't be given back unless
+                 * the QH is stopped or has finished unlinking. */
+                if (status == -ECONNRESET &&
+                                !(qh->is_stopped || QH_FINISHED_UNLINKING(qh)))
+                        return;
 
-        head = &urbp->td_list;
-        list_for_each_entry(td, head, list) {
-                /*
-                 * Make sure we don't do the last one (since it'll have the
-                 * TERM bit set) as well as we skip every so many TDs to
-                 * make sure it doesn't hog the bandwidth
-                 */
-                if (td->list.next != head && (count % DEPTH_INTERVAL) ==
-                                (DEPTH_INTERVAL - 1))
-                        td->link |= UHCI_PTR_DEPTH;
-
-                count++;
+                uhci_giveback_urb(uhci, qh, urb, regs);
+                if (qh->is_stopped)
+                        break;
         }
 
-        return 0;
-}
-
-static void uhci_free_pending_qhs(struct uhci_hcd *uhci)
-{
-        struct uhci_qh *qh, *tmp;
-
-        list_for_each_entry_safe(qh, tmp, &uhci->qh_remove_list, remove_list) {
-                list_del_init(&qh->remove_list);
+        /* If the QH is neither stopped nor finished unlinking (normal case),
+         * our work here is done. */
+ restart:
+        if (!(qh->is_stopped || QH_FINISHED_UNLINKING(qh)))
+                return;
 
-                uhci_free_qh(uhci, qh);
+        /* Otherwise give back each of the dequeued URBs */
+        list_for_each_entry(urbp, &qh->queue, node) {
+                urb = urbp->urb;
+                if (urb->status != -EINPROGRESS) {
+                        uhci_save_toggle(qh, urb);
+                        uhci_giveback_urb(uhci, qh, urb, regs);
+                        goto restart;
+                }
+        }
+        qh->is_stopped = 0;
+
+        /* There are no more dequeued URBs.  If there are still URBs on the
+         * queue, the QH can now be re-activated. */
+        if (!list_empty(&qh->queue)) {
+                if (qh->needs_fixup)
+                        uhci_fixup_toggles(qh, 0);
+                uhci_activate_qh(uhci, qh);
         }
+
+        /* The queue is empty.  The QH can become idle if it is fully
+         * unlinked. */
+        else if (QH_FINISHED_UNLINKING(qh))
+                uhci_make_qh_idle(uhci, qh);
 }
 
 static void uhci_free_pending_tds(struct uhci_hcd *uhci)
@@ -1448,43 +1347,13 @@ static void uhci_free_pending_tds(struct uhci_hcd *uhci)
         }
 }
 
-static void
-uhci_finish_urb(struct usb_hcd *hcd, struct urb *urb, struct pt_regs *regs)
-__releases(uhci->lock)
-__acquires(uhci->lock)
-{
-        struct uhci_hcd *uhci = hcd_to_uhci(hcd);
-
-        uhci_destroy_urb_priv(uhci, urb);
-
-        spin_unlock(&uhci->lock);
-        usb_hcd_giveback_urb(hcd, urb, regs);
-        spin_lock(&uhci->lock);
-}
-
-static void uhci_finish_completion(struct uhci_hcd *uhci, struct pt_regs *regs)
-{
-        struct urb_priv *urbp, *tmp;
-
-        list_for_each_entry_safe(urbp, tmp, &uhci->complete_list, urb_list) {
-                struct urb *urb = urbp->urb;
-
-                list_del_init(&urbp->urb_list);
-                uhci_finish_urb(uhci_to_hcd(uhci), urb, regs);
-        }
-}
-
-static void uhci_remove_pending_urbps(struct uhci_hcd *uhci)
-{
-
-        /* Splice the urb_remove_list onto the end of the complete_list */
-        list_splice_init(&uhci->urb_remove_list, uhci->complete_list.prev);
-}
-
-/* Process events in the schedule, but only in one thread at a time */
+/*
+ * Process events in the schedule, but only in one thread at a time
+ */
 static void uhci_scan_schedule(struct uhci_hcd *uhci, struct pt_regs *regs)
 {
-        struct urb_priv *urbp, *tmp;
+        int i;
+        struct uhci_qh *qh;
 
         /* Don't allow re-entrant calls */
         if (uhci->scan_in_progress) {
@@ -1498,60 +1367,39 @@ static void uhci_scan_schedule(struct uhci_hcd *uhci, struct pt_regs *regs)
         uhci_clear_next_interrupt(uhci);
         uhci_get_current_frame_number(uhci);
 
-        if (uhci->frame_number + uhci->is_stopped != uhci->qh_remove_age)
-                uhci_free_pending_qhs(uhci);
         if (uhci->frame_number + uhci->is_stopped != uhci->td_remove_age)
                 uhci_free_pending_tds(uhci);
-        if (uhci->frame_number + uhci->is_stopped != uhci->urb_remove_age)
-                uhci_remove_pending_urbps(uhci);
-
-        /* Walk the list of pending URBs to see which ones completed
-         * (must be _safe because uhci_transfer_result() dequeues URBs) */
-        list_for_each_entry_safe(urbp, tmp, &uhci->urb_list, urb_list) {
-                struct urb *urb = urbp->urb;
 
-                /* Checks the status and does all of the magic necessary */
-                uhci_transfer_result(uhci, urb);
-        }
-        uhci_finish_completion(uhci, regs);
-
-        /* If the controller is stopped, we can finish these off right now */
-        if (uhci->is_stopped) {
-                uhci_free_pending_qhs(uhci);
-                uhci_free_pending_tds(uhci);
-                uhci_remove_pending_urbps(uhci);
+        /* Go through all the QH queues and process the URBs in each one */
+        for (i = 0; i < UHCI_NUM_SKELQH - 1; ++i) {
+                uhci->next_qh = list_entry(uhci->skelqh[i]->node.next,
+                                struct uhci_qh, node);
+                while ((qh = uhci->next_qh) != uhci->skelqh[i]) {
+                        uhci->next_qh = list_entry(qh->node.next,
+                                        struct uhci_qh, node);
+                        uhci_scan_qh(uhci, qh, regs);
+                }
         }
 
         if (uhci->need_rescan)
                 goto rescan;
         uhci->scan_in_progress = 0;
 
-        if (list_empty(&uhci->urb_remove_list) &&
-            list_empty(&uhci->td_remove_list) &&
-            list_empty(&uhci->qh_remove_list))
+        /* If the controller is stopped, we can finish these off right now */
+        if (uhci->is_stopped)
+                uhci_free_pending_tds(uhci);
+
+        if (list_empty(&uhci->td_remove_list) &&
+                        list_empty(&uhci->skel_unlink_qh->node))
                 uhci_clear_next_interrupt(uhci);
         else
                 uhci_set_next_interrupt(uhci);
-
-        /* Wake up anyone waiting for an URB to complete */
-        wake_up_all(&uhci->waitqh);
 }
 
 static void check_fsbr(struct uhci_hcd *uhci)
 {
-        struct urb_priv *up;
-
-        list_for_each_entry(up, &uhci->urb_list, urb_list) {
-                struct urb *u = up->urb;
-
-                spin_lock(&u->lock);
-
-                /* Check if the FSBR timed out */
-                if (up->fsbr && !up->fsbr_timeout && time_after_eq(jiffies, up->fsbrtime + IDLE_TIMEOUT))
-                        uhci_fsbr_timeout(uhci, u);
-
-                spin_unlock(&u->lock);
-        }
+        /* For now, don't scan URBs for FSBR timeouts.
+         * Add it back in later... */
 
         /* Really disable FSBR */
         if (!uhci->fsbr && uhci->fsbrtimeout && time_after_eq(jiffies, uhci->fsbrtimeout)) {
diff --git a/drivers/usb/image/mdc800.c b/drivers/usb/image/mdc800.c
index 049871145d63..08daf400f985 100644
--- a/drivers/usb/image/mdc800.c
+++ b/drivers/usb/image/mdc800.c
@@ -96,6 +96,7 @@
 #include <linux/module.h>
 #include <linux/smp_lock.h>
 #include <linux/wait.h>
+#include <linux/mutex.h>
 
 #include <linux/usb.h>
 #include <linux/fs.h>
@@ -169,7 +170,7 @@ struct mdc800_data
         int                     out_count;      // Bytes in the buffer
 
         int                     open;           // Camera device open ?
-        struct semaphore        io_lock;        // IO -lock
+        struct mutex            io_lock;        // IO -lock
 
         char                    in [8];         // Command Input Buffer
         int                     in_count;
@@ -497,7 +498,7 @@ static int mdc800_usb_probe (struct usb_interface *intf,
 
         info ("Found Mustek MDC800 on USB.");
 
-        down (&mdc800->io_lock);
+        mutex_lock(&mdc800->io_lock);
 
         retval = usb_register_dev(intf, &mdc800_class);
         if (retval) {
@@ -542,7 +543,7 @@ static int mdc800_usb_probe (struct usb_interface *intf,
 
         mdc800->state=READY;
 
-        up (&mdc800->io_lock);
+        mutex_unlock(&mdc800->io_lock);
         
         usb_set_intfdata(intf, mdc800);
         return 0;
@@ -620,7 +621,7 @@ static int mdc800_device_open (struct inode* inode, struct file *file)
         int retval=0;
         int errn=0;
 
-        down (&mdc800->io_lock);
+        mutex_lock(&mdc800->io_lock);
         
         if (mdc800->state == NOT_CONNECTED)
         {
@@ -656,7 +657,7 @@ static int mdc800_device_open (struct inode* inode, struct file *file)
         dbg ("Mustek MDC800 device opened.");
 
 error_out:
-        up (&mdc800->io_lock);
+        mutex_unlock(&mdc800->io_lock);
         return errn;
 }
 
@@ -669,7 +670,7 @@ static int mdc800_device_release (struct inode* inode, struct file *file)
         int retval=0;
         dbg ("Mustek MDC800 device closed.");
 
-        down (&mdc800->io_lock);
+        mutex_lock(&mdc800->io_lock);
         if (mdc800->open && (mdc800->state != NOT_CONNECTED))
         {
                 usb_kill_urb(mdc800->irq_urb);
@@ -682,7 +683,7 @@ static int mdc800_device_release (struct inode* inode, struct file *file)
                 retval=-EIO;
         }
 
-        up(&mdc800->io_lock);
+        mutex_unlock(&mdc800->io_lock);
         return retval;
 }
 
@@ -695,21 +696,21 @@ static ssize_t mdc800_device_read (struct file *file, char __user *buf, size_t l
         size_t left=len, sts=len; /* single transfer size */
         char __user *ptr = buf;
 
-        down (&mdc800->io_lock);
+        mutex_lock(&mdc800->io_lock);
         if (mdc800->state == NOT_CONNECTED)
         {
-                up (&mdc800->io_lock);
+                mutex_unlock(&mdc800->io_lock);
                 return -EBUSY;
         }
         if (mdc800->state == WORKING)
         {
                 warn ("Illegal State \"working\" reached during read ?!");
-                up (&mdc800->io_lock);
+                mutex_unlock(&mdc800->io_lock);
                 return -EBUSY;
         }
         if (!mdc800->open)
         {
-                up (&mdc800->io_lock);
+                mutex_unlock(&mdc800->io_lock);
                 return -EBUSY;
         }
 
@@ -717,7 +718,7 @@ static ssize_t mdc800_device_read (struct file *file, char __user *buf, size_t l
         {
                 if (signal_pending (current)) 
                 {
-                        up (&mdc800->io_lock);
+                        mutex_unlock(&mdc800->io_lock);
                         return -EINTR;
                 }
 
@@ -736,7 +737,7 @@ static ssize_t mdc800_device_read (struct file *file, char __user *buf, size_t l
                                 if (usb_submit_urb (mdc800->download_urb, GFP_KERNEL))
                                 {
                                         err ("Can't submit download urb (status=%i)",mdc800->download_urb->status);
-                                        up (&mdc800->io_lock);
+                                        mutex_unlock(&mdc800->io_lock);
                                         return len-left;
                                 }
                                 wait_event_timeout(mdc800->download_wait, mdc800->downloaded,
@@ -745,14 +746,14 @@ static ssize_t mdc800_device_read (struct file *file, char __user *buf, size_t l
                                 if (mdc800->download_urb->status != 0)
                                 {
                                         err ("request download-bytes fails (status=%i)",mdc800->download_urb->status);
-                                        up (&mdc800->io_lock);
+                                        mutex_unlock(&mdc800->io_lock);
                                         return len-left;
                                 }
                         }
                         else
                         {
                                 /* No more bytes -> that's an error*/
-                                up (&mdc800->io_lock);
+                                mutex_unlock(&mdc800->io_lock);
                                 return -EIO;
                         }
                 }
@@ -761,7 +762,7 @@ static ssize_t mdc800_device_read (struct file *file, char __user *buf, size_t l
                         /* Copy Bytes */
                         if (copy_to_user(ptr, &mdc800->out [mdc800->out_ptr],
                                                 sts)) {
-                                up(&mdc800->io_lock);
+                                mutex_unlock(&mdc800->io_lock);
                                 return -EFAULT;
                         }
                         ptr+=sts;
@@ -770,7 +771,7 @@ static ssize_t mdc800_device_read (struct file *file, char __user *buf, size_t l
                 }
         }
 
-        up (&mdc800->io_lock);
+        mutex_unlock(&mdc800->io_lock);
         return len-left;
 }
 
@@ -785,15 +786,15 @@ static ssize_t mdc800_device_write (struct file *file, const char __user *buf, s
 {
         size_t i=0;
 
-        down (&mdc800->io_lock);
+        mutex_lock(&mdc800->io_lock);
         if (mdc800->state != READY)
         {
-                up (&mdc800->io_lock);
+                mutex_unlock(&mdc800->io_lock);
                 return -EBUSY;
         }
         if (!mdc800->open )
         {
-                up (&mdc800->io_lock);
+                mutex_unlock(&mdc800->io_lock);
                 return -EBUSY;
         }
 
@@ -802,13 +803,13 @@ static ssize_t mdc800_device_write (struct file *file, const char __user *buf, s
                 unsigned char c;
                 if (signal_pending (current)) 
                 {
-                        up (&mdc800->io_lock);
+                        mutex_unlock(&mdc800->io_lock);
                         return -EINTR;
                 }
                 
                 if(get_user(c, buf+i))
                 {
-                        up(&mdc800->io_lock);
+                        mutex_unlock(&mdc800->io_lock);
                         return -EFAULT;
                 }
 
@@ -829,7 +830,7 @@ static ssize_t mdc800_device_write (struct file *file, const char __user *buf, s
                 }
                 else
                 {
-                        up (&mdc800->io_lock);
+                        mutex_unlock(&mdc800->io_lock);
                         return -EIO;
                 }
 
@@ -841,7 +842,7 @@ static ssize_t mdc800_device_write (struct file *file, const char __user *buf, s
                         if (mdc800_usb_waitForIRQ (0,TO_GET_READY))
                         {
                                 err ("Camera didn't get ready.\n");
-                                up (&mdc800->io_lock);
+                                mutex_unlock(&mdc800->io_lock);
                                 return -EIO;
                         }
 
@@ -853,7 +854,7 @@ static ssize_t mdc800_device_write (struct file *file, const char __user *buf, s
                         if (usb_submit_urb (mdc800->write_urb, GFP_KERNEL))
                         {
                                 err ("submitting write urb fails (status=%i)", mdc800->write_urb->status);
-                                up (&mdc800->io_lock);
+                                mutex_unlock(&mdc800->io_lock);
                                 return -EIO;
                         }
                         wait_event_timeout(mdc800->write_wait, mdc800->written, TO_WRITE_GET_READY*HZ/1000);
@@ -861,7 +862,7 @@ static ssize_t mdc800_device_write (struct file *file, const char __user *buf, s
                         if (mdc800->state == WORKING)
                         {
                                 usb_kill_urb(mdc800->write_urb);
-                                up (&mdc800->io_lock);
+                                mutex_unlock(&mdc800->io_lock);
                                 return -EIO;
                         }
 
@@ -873,7 +874,7 @@ static ssize_t mdc800_device_write (struct file *file, const char __user *buf, s
                                         {
                                                 err ("call 0x07 before 0x05,0x3e");
                                                 mdc800->state=READY;
-                                                up (&mdc800->io_lock);
+                                                mutex_unlock(&mdc800->io_lock);
                                                 return -EIO;
                                         }
                                         mdc800->pic_len=-1;
@@ -892,7 +893,7 @@ static ssize_t mdc800_device_write (struct file *file, const char __user *buf, s
                                                 if (mdc800_usb_waitForIRQ (1,TO_READ_FROM_IRQ))
                                                 {
                                                         err ("requesting answer from irq fails");
-                                                        up (&mdc800->io_lock);
+                                                        mutex_unlock(&mdc800->io_lock);
                                                         return -EIO;
                                                 }
 
@@ -920,7 +921,7 @@ static ssize_t mdc800_device_write (struct file *file, const char __user *buf, s
                                                 if (mdc800_usb_waitForIRQ (0,TO_DEFAULT_COMMAND))
                                                 {
                                                         err ("Command Timeout.");
-                                                        up (&mdc800->io_lock);
+                                                        mutex_unlock(&mdc800->io_lock);
                                                         return -EIO;
                                                 }
                                         }
@@ -930,7 +931,7 @@ static ssize_t mdc800_device_write (struct file *file, const char __user *buf, s
                 }
                 i++;
         }
-        up (&mdc800->io_lock);
+        mutex_unlock(&mdc800->io_lock);
         return i;
 }
 
@@ -978,15 +979,13 @@ static int __init usb_mdc800_init (void)
 {
         int retval = -ENODEV;
         /* Allocate Memory */
-        mdc800=kmalloc (sizeof (struct mdc800_data), GFP_KERNEL);
+        mdc800=kzalloc (sizeof (struct mdc800_data), GFP_KERNEL);
         if (!mdc800)
                 goto cleanup_on_fail;
 
-        memset(mdc800, 0, sizeof(struct mdc800_data));
         mdc800->dev = NULL;
-        mdc800->open=0;
         mdc800->state=NOT_CONNECTED;
-        init_MUTEX (&mdc800->io_lock);
+        mutex_init (&mdc800->io_lock);
 
         init_waitqueue_head (&mdc800->irq_wait);
         init_waitqueue_head (&mdc800->write_wait);
diff --git a/drivers/usb/input/ati_remote.c b/drivers/usb/input/ati_remote.c
index f7bdc506e613..99f986cb6e95 100644
--- a/drivers/usb/input/ati_remote.c
+++ b/drivers/usb/input/ati_remote.c
@@ -159,8 +159,6 @@ static const char accel[] = { 1, 2, 4, 6, 9, 13, 20 };
  */
 #define FILTER_TIME (HZ / 20)
 
-static DECLARE_MUTEX(disconnect_sem);
-
 struct ati_remote {
         struct input_dev *idev;
         struct usb_device *udev;
diff --git a/drivers/usb/input/hid-core.c b/drivers/usb/input/hid-core.c
index 07a012f88772..58b59f6e9881 100644
--- a/drivers/usb/input/hid-core.c
+++ b/drivers/usb/input/hid-core.c
@@ -66,9 +66,8 @@ static struct hid_report *hid_register_report(struct hid_device *device, unsigne
         if (report_enum->report_id_hash[id])
                 return report_enum->report_id_hash[id];
 
-        if (!(report = kmalloc(sizeof(struct hid_report), GFP_KERNEL)))
+        if (!(report = kzalloc(sizeof(struct hid_report), GFP_KERNEL)))
                 return NULL;
-        memset(report, 0, sizeof(struct hid_report));
 
         if (id != 0)
                 report_enum->numbered = 1;
@@ -97,12 +96,9 @@ static struct hid_field *hid_register_field(struct hid_report *report, unsigned
                 return NULL;
         }
 
-        if (!(field = kmalloc(sizeof(struct hid_field) + usages * sizeof(struct hid_usage)
+        if (!(field = kzalloc(sizeof(struct hid_field) + usages * sizeof(struct hid_usage)
                 + values * sizeof(unsigned), GFP_KERNEL))) return NULL;
 
-        memset(field, 0, sizeof(struct hid_field) + usages * sizeof(struct hid_usage)
-                + values * sizeof(unsigned));
-
         field->index = report->maxfield++;
         report->field[field->index] = field;
         field->usage = (struct hid_usage *)(field + 1);
@@ -651,17 +647,14 @@ static struct hid_device *hid_parse_report(__u8 *start, unsigned size)
                 hid_parser_reserved
         };
 
-        if (!(device = kmalloc(sizeof(struct hid_device), GFP_KERNEL)))
+        if (!(device = kzalloc(sizeof(struct hid_device), GFP_KERNEL)))
                 return NULL;
-        memset(device, 0, sizeof(struct hid_device));
 
-        if (!(device->collection = kmalloc(sizeof(struct hid_collection) *
+        if (!(device->collection = kzalloc(sizeof(struct hid_collection) *
                                    HID_DEFAULT_NUM_COLLECTIONS, GFP_KERNEL))) {
                 kfree(device);
                 return NULL;
         }
-        memset(device->collection, 0, sizeof(struct hid_collection) *
-                HID_DEFAULT_NUM_COLLECTIONS);
         device->collection_size = HID_DEFAULT_NUM_COLLECTIONS;
 
         for (i = 0; i < HID_REPORT_TYPES; i++)
@@ -675,13 +668,12 @@ static struct hid_device *hid_parse_report(__u8 *start, unsigned size)
         memcpy(device->rdesc, start, size);
         device->rsize = size;
 
-        if (!(parser = kmalloc(sizeof(struct hid_parser), GFP_KERNEL))) {
+        if (!(parser = kzalloc(sizeof(struct hid_parser), GFP_KERNEL))) {
                 kfree(device->rdesc);
                 kfree(device->collection);
                 kfree(device);
                 return NULL;
         }
-        memset(parser, 0, sizeof(struct hid_parser));
         parser->device = device;
 
         end = start + size;
@@ -911,6 +903,99 @@ static int hid_input_report(int type, struct urb *urb, int interrupt, struct pt_
 }
 
 /*
+ * Input submission and I/O error handler.
+ */
+
+static void hid_io_error(struct hid_device *hid);
+
+/* Start up the input URB */
+static int hid_start_in(struct hid_device *hid)
+{
+        unsigned long flags;
+        int rc = 0;
+
+        spin_lock_irqsave(&hid->inlock, flags);
+        if (hid->open > 0 && !test_bit(HID_SUSPENDED, &hid->iofl) &&
+                        !test_and_set_bit(HID_IN_RUNNING, &hid->iofl)) {
+                rc = usb_submit_urb(hid->urbin, GFP_ATOMIC);
+                if (rc != 0)
+                        clear_bit(HID_IN_RUNNING, &hid->iofl);
+        }
+        spin_unlock_irqrestore(&hid->inlock, flags);
+        return rc;
+}
+
+/* I/O retry timer routine */
+static void hid_retry_timeout(unsigned long _hid)
+{
+        struct hid_device *hid = (struct hid_device *) _hid;
+
+        dev_dbg(&hid->intf->dev, "retrying intr urb\n");
+        if (hid_start_in(hid))
+                hid_io_error(hid);
+}
+
+/* Workqueue routine to reset the device */
+static void hid_reset(void *_hid)
+{
+        struct hid_device *hid = (struct hid_device *) _hid;
+        int rc_lock, rc;
+
+        dev_dbg(&hid->intf->dev, "resetting device\n");
+        rc = rc_lock = usb_lock_device_for_reset(hid->dev, hid->intf);
+        if (rc_lock >= 0) {
+                rc = usb_reset_device(hid->dev);
+                if (rc_lock)
+                        usb_unlock_device(hid->dev);
+        }
+        clear_bit(HID_RESET_PENDING, &hid->iofl);
+
+        if (rc == 0) {
+                hid->retry_delay = 0;
+                if (hid_start_in(hid))
+                        hid_io_error(hid);
+        } else if (!(rc == -ENODEV || rc == -EHOSTUNREACH || rc == -EINTR))
+                err("can't reset device, %s-%s/input%d, status %d",
+                                hid->dev->bus->bus_name,
+                                hid->dev->devpath,
+                                hid->ifnum, rc);
+}
+
+/* Main I/O error handler */
+static void hid_io_error(struct hid_device *hid)
+{
+        unsigned long flags;
+
+        spin_lock_irqsave(&hid->inlock, flags);
+
+        /* Stop when disconnected */
+        if (usb_get_intfdata(hid->intf) == NULL)
+                goto done;
+
+        /* When an error occurs, retry at increasing intervals */
+        if (hid->retry_delay == 0) {
+                hid->retry_delay = 13;  /* Then 26, 52, 104, 104, ... */
+                hid->stop_retry = jiffies + msecs_to_jiffies(1000);
+        } else if (hid->retry_delay < 100)
+                hid->retry_delay *= 2;
+
+        if (time_after(jiffies, hid->stop_retry)) {
+
+                /* Retries failed, so do a port reset */
+                if (!test_and_set_bit(HID_RESET_PENDING, &hid->iofl)) {
+                        if (schedule_work(&hid->reset_work))
+                                goto done;
+                        clear_bit(HID_RESET_PENDING, &hid->iofl);
+                }
+        }
+
+        mod_timer(&hid->io_retry,
+                        jiffies + msecs_to_jiffies(hid->retry_delay));
+done:
+        spin_unlock_irqrestore(&hid->inlock, flags);
+}
+
+/*
  * Input interrupt completion handler.
  */
 
@@ -921,25 +1006,35 @@ static void hid_irq_in(struct urb *urb, struct pt_regs *regs)
 
         switch (urb->status) {
                 case 0:                 /* success */
+                        hid->retry_delay = 0;
                         hid_input_report(HID_INPUT_REPORT, urb, 1, regs);
                         break;
                 case -ECONNRESET:       /* unlink */
                 case -ENOENT:
-                case -EPERM:
                 case -ESHUTDOWN:        /* unplug */
-                case -EILSEQ:           /* unplug timeout on uhci */
+                        clear_bit(HID_IN_RUNNING, &hid->iofl);
                         return;
+                case -EILSEQ:           /* protocol error or unplug */
+                case -EPROTO:           /* protocol error or unplug */
                 case -ETIMEDOUT:        /* NAK */
-                        break;
+                        clear_bit(HID_IN_RUNNING, &hid->iofl);
+                        hid_io_error(hid);
+                        return;
                 default:                /* error */
                         warn("input irq status %d received", urb->status);
         }
 
         status = usb_submit_urb(urb, SLAB_ATOMIC);
-        if (status)
-                err("can't resubmit intr, %s-%s/input%d, status %d",
-                                hid->dev->bus->bus_name, hid->dev->devpath,
-                                hid->ifnum, status);
+        if (status) {
+                clear_bit(HID_IN_RUNNING, &hid->iofl);
+                if (status != -EPERM) {
+                        err("can't resubmit intr, %s-%s/input%d, status %d",
+                                        hid->dev->bus->bus_name,
+                                        hid->dev->devpath,
+                                        hid->ifnum, status);
+                        hid_io_error(hid);
+                }
+        }
 }
 
 /*
@@ -1101,8 +1196,9 @@ static void hid_irq_out(struct urb *urb, struct pt_regs *regs)
                 case 0:                 /* success */
                         break;
                 case -ESHUTDOWN:        /* unplug */
-                case -EILSEQ:           /* unplug timeout on uhci */
                         unplug = 1;
+                case -EILSEQ:           /* protocol error or unplug */
+                case -EPROTO:           /* protocol error or unplug */
                 case -ECONNRESET:       /* unlink */
                 case -ENOENT:
                         break;
@@ -1149,8 +1245,9 @@ static void hid_ctrl(struct urb *urb, struct pt_regs *regs)
                                 hid_input_report(hid->ctrl[hid->ctrltail].report->type, urb, 0, regs);
                         break;
                 case -ESHUTDOWN:        /* unplug */
-                case -EILSEQ:           /* unplug timectrl on uhci */
                         unplug = 1;
+                case -EILSEQ:           /* protocol error or unplug */
+                case -EPROTO:           /* protocol error or unplug */
                 case -ECONNRESET:       /* unlink */
                 case -ENOENT:
                 case -EPIPE:            /* report not available */
@@ -1263,14 +1360,9 @@ static int hid_get_class_descriptor(struct usb_device *dev, int ifnum,
 
 int hid_open(struct hid_device *hid)
 {
-        if (hid->open++)
-                return 0;
-
-        hid->urbin->dev = hid->dev;
-
-        if (usb_submit_urb(hid->urbin, GFP_KERNEL))
-                return -EIO;
-
+        ++hid->open;
+        if (hid_start_in(hid))
+                hid_io_error(hid);
         return 0;
 }
 
@@ -1460,6 +1552,9 @@ void hid_init_reports(struct hid_device *hid)
 #define USB_VENDOR_ID_HP                0x03f0
 #define USB_DEVICE_ID_HP_USBHUB_KB      0x020c
 
+#define USB_VENDOR_ID_CREATIVELABS      0x062a
+#define USB_DEVICE_ID_CREATIVELABS_SILVERCREST  0x0201
+
 /*
  * Alphabetically sorted blacklist by quirk type.
  */
@@ -1576,6 +1671,7 @@ static const struct hid_blacklist {
         { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_4PORTKVMC, HID_QUIRK_NOGET },
         { USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_KEYBOARD, HID_QUIRK_NOGET},
         { USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_USBHUB_KB, HID_QUIRK_NOGET},
+        { USB_VENDOR_ID_CREATIVELABS, USB_DEVICE_ID_CREATIVELABS_SILVERCREST, HID_QUIRK_NOGET },
         { USB_VENDOR_ID_HP, USB_DEVICE_ID_HP_USBHUB_KB, HID_QUIRK_NOGET },
         { USB_VENDOR_ID_TANGTOP, USB_DEVICE_ID_TANGTOP_USBPS2, HID_QUIRK_NOGET },
         { USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_DUAL_USB_JOYPAD, HID_QUIRK_NOGET | HID_QUIRK_MULTI_INPUT },
@@ -1795,6 +1891,10 @@ static struct hid_device *usb_hid_configure(struct usb_interface *intf)
 
         init_waitqueue_head(&hid->wait);
 
+        INIT_WORK(&hid->reset_work, hid_reset, hid);
+        setup_timer(&hid->io_retry, hid_retry_timeout, (unsigned long) hid);
+
+        spin_lock_init(&hid->inlock);
         spin_lock_init(&hid->outlock);
         spin_lock_init(&hid->ctrllock);
 
@@ -1863,11 +1963,16 @@ static void hid_disconnect(struct usb_interface *intf)
         if (!hid)
                 return;
 
+        spin_lock_irq(&hid->inlock);    /* Sync with error handler */
         usb_set_intfdata(intf, NULL);
+        spin_unlock_irq(&hid->inlock);
         usb_kill_urb(hid->urbin);
         usb_kill_urb(hid->urbout);
         usb_kill_urb(hid->urbctrl);
 
+        del_timer_sync(&hid->io_retry);
+        flush_scheduled_work();
+
         if (hid->claimed & HID_CLAIMED_INPUT)
                 hidinput_disconnect(hid);
         if (hid->claimed & HID_CLAIMED_HIDDEV)
@@ -1942,6 +2047,10 @@ static int hid_suspend(struct usb_interface *intf, pm_message_t message)
 {
         struct hid_device *hid = usb_get_intfdata (intf);
 
+        spin_lock_irq(&hid->inlock);    /* Sync with error handler */
+        set_bit(HID_SUSPENDED, &hid->iofl);
+        spin_unlock_irq(&hid->inlock);
+        del_timer(&hid->io_retry);
         usb_kill_urb(hid->urbin);
         dev_dbg(&intf->dev, "suspend\n");
         return 0;
@@ -1952,10 +2061,8 @@ static int hid_resume(struct usb_interface *intf)
         struct hid_device *hid = usb_get_intfdata (intf);
         int status;
 
-        if (hid->open)
-                status = usb_submit_urb(hid->urbin, GFP_NOIO);
-        else
-                status = 0;
+        clear_bit(HID_SUSPENDED, &hid->iofl);
+        status = hid_start_in(hid);
         dev_dbg(&intf->dev, "resume status %d\n", status);
         return status;
 }
diff --git a/drivers/usb/input/hid-lgff.c b/drivers/usb/input/hid-lgff.c
index f82c9c9e5d51..f07d44357ff1 100644
--- a/drivers/usb/input/hid-lgff.c
+++ b/drivers/usb/input/hid-lgff.c
@@ -154,10 +154,9 @@ int hid_lgff_init(struct hid_device* hid)
                 return -1;
         }
 
-        private = kmalloc(sizeof(struct lgff_device), GFP_KERNEL);
+        private = kzalloc(sizeof(struct lgff_device), GFP_KERNEL);
         if (!private)
                 return -1;
-        memset(private, 0, sizeof(struct lgff_device));
         hid->ff_private = private;
 
         /* Input init */
@@ -228,13 +227,12 @@ static struct hid_report* hid_lgff_duplicate_report(struct hid_report* report)
         }
         *ret->field[0] = *report->field[0];
 
-        ret->field[0]->value = kmalloc(sizeof(s32[8]), GFP_KERNEL);
+        ret->field[0]->value = kzalloc(sizeof(s32[8]), GFP_KERNEL);
         if (!ret->field[0]->value) {
                 kfree(ret->field[0]);
                 kfree(ret);
                 return NULL;
         }
-        memset(ret->field[0]->value, 0, sizeof(s32[8]));
 
         return ret;
 }
diff --git a/drivers/usb/input/hid-tmff.c b/drivers/usb/input/hid-tmff.c
index 023fd5ac31c8..534425c69c0a 100644
--- a/drivers/usb/input/hid-tmff.c
+++ b/drivers/usb/input/hid-tmff.c
@@ -113,11 +113,10 @@ int hid_tmff_init(struct hid_device *hid)
         struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list);
         struct input_dev *input_dev = hidinput->input;
 
-        private = kmalloc(sizeof(struct tmff_device), GFP_KERNEL);
+        private = kzalloc(sizeof(struct tmff_device), GFP_KERNEL);
         if (!private)
                 return -ENOMEM;
 
-        memset(private, 0, sizeof(struct tmff_device));
         hid->ff_private = private;
 
         /* Find the report to use */
diff --git a/drivers/usb/input/hid.h b/drivers/usb/input/hid.h
index 8b0d4346ce9c..4e1b784fe527 100644
--- a/drivers/usb/input/hid.h
+++ b/drivers/usb/input/hid.h
@@ -31,6 +31,8 @@
 #include <linux/types.h>
 #include <linux/slab.h>
 #include <linux/list.h>
+#include <linux/timer.h>
+#include <linux/workqueue.h>
 
 /*
  * USB HID (Human Interface Device) interface class code
@@ -370,6 +372,9 @@ struct hid_control_fifo {
 
 #define HID_CTRL_RUNNING        1
 #define HID_OUT_RUNNING         2
+#define HID_IN_RUNNING          3
+#define HID_RESET_PENDING       4
+#define HID_SUSPENDED           5
 
 struct hid_input {
         struct list_head list;
@@ -393,12 +398,17 @@ struct hid_device {							/* device report descriptor */
         int ifnum;                                                      /* USB interface number */
 
         unsigned long iofl;                                             /* I/O flags (CTRL_RUNNING, OUT_RUNNING) */
+        struct timer_list io_retry;                                     /* Retry timer */
+        unsigned long stop_retry;                                       /* Time to give up, in jiffies */
+        unsigned int retry_delay;                                       /* Delay length in ms */
+        struct work_struct reset_work;                                  /* Task context for resets */
 
         unsigned int bufsize;                                           /* URB buffer size */
 
         struct urb *urbin;                                              /* Input URB */
         char *inbuf;                                                    /* Input buffer */
         dma_addr_t inbuf_dma;                                           /* Input buffer dma */
+        spinlock_t inlock;                                              /* Input fifo spinlock */
 
         struct urb *urbctrl;                                            /* Control URB */
         struct usb_ctrlrequest *cr;                                     /* Control request struct */
diff --git a/drivers/usb/input/hiddev.c b/drivers/usb/input/hiddev.c
index 925f5aba06f5..6dd666696178 100644
--- a/drivers/usb/input/hiddev.c
+++ b/drivers/usb/input/hiddev.c
@@ -257,9 +257,8 @@ static int hiddev_open(struct inode * inode, struct file * file) {
         if (i >= HIDDEV_MINORS || !hiddev_table[i])
                 return -ENODEV;
 
-        if (!(list = kmalloc(sizeof(struct hiddev_list), GFP_KERNEL)))
+        if (!(list = kzalloc(sizeof(struct hiddev_list), GFP_KERNEL)))
                 return -ENOMEM;
-        memset(list, 0, sizeof(struct hiddev_list));
 
         list->hiddev = hiddev_table[i];
         list->next = hiddev_table[i]->list;
@@ -754,9 +753,8 @@ int hiddev_connect(struct hid_device *hid)
         if (i == hid->maxcollection && (hid->quirks & HID_QUIRK_HIDDEV) == 0)
                 return -1;
 
-        if (!(hiddev = kmalloc(sizeof(struct hiddev), GFP_KERNEL)))
+        if (!(hiddev = kzalloc(sizeof(struct hiddev), GFP_KERNEL)))
                 return -1;
-        memset(hiddev, 0, sizeof(struct hiddev));
 
         retval = usb_register_dev(hid->intf, &hiddev_class);
         if (retval) {
diff --git a/drivers/usb/media/Kconfig b/drivers/usb/media/Kconfig
index 0d3d2cc5d7be..189d40f96be5 100644
--- a/drivers/usb/media/Kconfig
+++ b/drivers/usb/media/Kconfig
@@ -191,6 +191,21 @@ config USB_W9968CF
           To compile this driver as a module, choose M here: the
           module will be called w9968cf.
 
+config USB_ZC0301
+        tristate "USB ZC0301 Image Processor and Control Chip support"
+        depends on USB && VIDEO_DEV
+        ---help---
+          Say Y here if you want support for cameras based on the ZC0301
+          Image Processor and Control Chip.
+
+          See <file:Documentation/usb/zc0301.txt> for more informations.
+
+          This driver uses the Video For Linux API. You must say Y or M to
+          "Video For Linux" to use this driver.
+
+          To compile this driver as a module, choose M here: the
+          module will be called zc0301.
+
 config USB_PWC
         tristate "USB Philips Cameras"
         depends on USB && VIDEO_DEV
diff --git a/drivers/usb/media/Makefile b/drivers/usb/media/Makefile
index 3957aa1be0f2..50e89a33b85e 100644
--- a/drivers/usb/media/Makefile
+++ b/drivers/usb/media/Makefile
@@ -2,8 +2,12 @@
 # Makefile for USB Media drivers
 #
 
-sn9c102-objs    := sn9c102_core.o sn9c102_hv7131d.o sn9c102_mi0343.o sn9c102_ov7630.o sn9c102_pas106b.o sn9c102_pas202bcb.o sn9c102_tas5110c1b.o sn9c102_tas5130d1b.o
+sn9c102-objs    := sn9c102_core.o sn9c102_hv7131d.o sn9c102_mi0343.o \
+                   sn9c102_ov7630.o sn9c102_pas106b.o sn9c102_pas202bca.o \
+                   sn9c102_pas202bcb.o sn9c102_tas5110c1b.o \
+                   sn9c102_tas5130d1b.o
 et61x251-objs   := et61x251_core.o et61x251_tas5130d1b.o
+zc0301-objs     := zc0301_core.o zc0301_pas202bcb.o
 
 obj-$(CONFIG_USB_DABUSB)        += dabusb.o
 obj-$(CONFIG_USB_DSBR)          += dsbr100.o
@@ -16,4 +20,5 @@ obj-$(CONFIG_USB_SN9C102)	+= sn9c102.o
 obj-$(CONFIG_USB_STV680)        += stv680.o
 obj-$(CONFIG_USB_VICAM)         += vicam.o usbvideo.o
 obj-$(CONFIG_USB_W9968CF)       += w9968cf.o
+obj-$(CONFIG_USB_ZC0301)        += zc0301.o
 obj-$(CONFIG_USB_PWC)           += pwc/
diff --git a/drivers/usb/media/dabusb.c b/drivers/usb/media/dabusb.c
index 18d8eaf408d5..1774ab7a40d2 100644
--- a/drivers/usb/media/dabusb.c
+++ b/drivers/usb/media/dabusb.c
@@ -38,6 +38,7 @@
 #include <linux/delay.h>
 #include <linux/usb.h>
 #include <linux/smp_lock.h>
+#include <linux/mutex.h>
 
 #include "dabusb.h"
 #include "dabfirmware.h"
@@ -217,12 +218,11 @@ static int dabusb_alloc_buffers (pdabusb_t s)
                  pipesize, packets, transfer_buffer_length);
 
         while (buffers < (s->total_buffer_size << 10)) {
-                b = (pbuff_t) kmalloc (sizeof (buff_t), GFP_KERNEL);
+                b = (pbuff_t) kzalloc (sizeof (buff_t), GFP_KERNEL);
                 if (!b) {
-                        err("kmalloc(sizeof(buff_t))==NULL");
+                        err("kzalloc(sizeof(buff_t))==NULL");
                         goto err;
                 }
-                memset (b, 0, sizeof (buff_t));
                 b->s = s;
                 b->purb = usb_alloc_urb(packets, GFP_KERNEL);
                 if (!b->purb) {
@@ -571,7 +571,7 @@ static ssize_t dabusb_read (struct file *file, char __user *buf, size_t count, l
                         s->readptr = 0;
                 }
         }
-      err:                      //up(&s->mutex);
+      err:                      //mutex_unlock(&s->mutex);
         return ret;
 }
 
@@ -586,10 +586,10 @@ static int dabusb_open (struct inode *inode, struct file *file)
         s = &dabusb[devnum - DABUSB_MINOR];
 
         dbg("dabusb_open");
-        down (&s->mutex);
+        mutex_lock(&s->mutex);
 
         while (!s->usbdev || s->opened) {
-                up (&s->mutex);
+                mutex_unlock(&s->mutex);
 
                 if (file->f_flags & O_NONBLOCK) {
                         return -EBUSY;
@@ -599,15 +599,15 @@ static int dabusb_open (struct inode *inode, struct file *file)
                 if (signal_pending (current)) {
                         return -EAGAIN;
                 }
-                down (&s->mutex);
+                mutex_lock(&s->mutex);
         }
         if (usb_set_interface (s->usbdev, _DABUSB_IF, 1) < 0) {
-                up(&s->mutex);
+                mutex_unlock(&s->mutex);
                 err("set_interface failed");
                 return -EINVAL;
         }
         s->opened = 1;
-        up (&s->mutex);
+        mutex_unlock(&s->mutex);
 
         file->f_pos = 0;
         file->private_data = s;
@@ -621,10 +621,10 @@ static int dabusb_release (struct inode *inode, struct file *file)
 
         dbg("dabusb_release");
 
-        down (&s->mutex);
+        mutex_lock(&s->mutex);
         dabusb_stop (s);
         dabusb_free_buffers (s);
-        up (&s->mutex);
+        mutex_unlock(&s->mutex);
 
         if (!s->remove_pending) {
                 if (usb_set_interface (s->usbdev, _DABUSB_IF, 0) < 0)
@@ -649,10 +649,10 @@ static int dabusb_ioctl (struct inode *inode, struct file *file, unsigned int cm
         if (s->remove_pending)
                 return -EIO;
 
-        down (&s->mutex);
+        mutex_lock(&s->mutex);
 
         if (!s->usbdev) {
-                up (&s->mutex);
+                mutex_unlock(&s->mutex);
                 return -EIO;
         }
 
@@ -692,7 +692,7 @@ static int dabusb_ioctl (struct inode *inode, struct file *file, unsigned int cm
                 ret = -ENOIOCTLCMD;
                 break;
         }
-        up (&s->mutex);
+        mutex_unlock(&s->mutex);
         return ret;
 }
 
@@ -738,7 +738,7 @@ static int dabusb_probe (struct usb_interface *intf,
 
         s = &dabusb[intf->minor];
 
-        down (&s->mutex);
+        mutex_lock(&s->mutex);
         s->remove_pending = 0;
         s->usbdev = usbdev;
         s->devnum = intf->minor;
@@ -761,7 +761,7 @@ static int dabusb_probe (struct usb_interface *intf,
         }
         dbg("bound to interface: %d", intf->altsetting->desc.bInterfaceNumber);
         usb_set_intfdata (intf, s);
-        up (&s->mutex);
+        mutex_unlock(&s->mutex);
 
         retval = usb_register_dev(intf, &dabusb_class);
         if (retval) {
@@ -772,7 +772,7 @@ static int dabusb_probe (struct usb_interface *intf,
         return 0;
 
       reject:
-        up (&s->mutex);
+        mutex_unlock(&s->mutex);
         s->usbdev = NULL;
         return -ENODEV;
 }
@@ -829,7 +829,7 @@ static int __init dabusb_init (void)
         for (u = 0; u < NRDABUSB; u++) {
                 pdabusb_t s = &dabusb[u];
                 memset (s, 0, sizeof (dabusb_t));
-                init_MUTEX (&s->mutex);
+                mutex_init (&s->mutex);
                 s->usbdev = NULL;
                 s->total_buffer_size = buffers;
                 init_waitqueue_head (&s->wait);
diff --git a/drivers/usb/media/dabusb.h b/drivers/usb/media/dabusb.h
index 10b666e43abc..96b03e4af8b9 100644
--- a/drivers/usb/media/dabusb.h
+++ b/drivers/usb/media/dabusb.h
@@ -18,7 +18,7 @@ typedef enum { _stopped=0, _started } driver_state_t;
 
 typedef struct
 {
-        struct semaphore mutex;
+        struct mutex mutex;
         struct usb_device *usbdev;
         wait_queue_head_t wait;
         wait_queue_head_t remove_ok;
diff --git a/drivers/usb/media/et61x251.h b/drivers/usb/media/et61x251.h
index 652238f329f3..eee8afc9be72 100644
--- a/drivers/usb/media/et61x251.h
+++ b/drivers/usb/media/et61x251.h
@@ -33,7 +33,9 @@
 #include <linux/types.h>
 #include <linux/param.h>
 #include <linux/rwsem.h>
-#include <asm/semaphore.h>
+#include <linux/mutex.h>
+#include <linux/stddef.h>
+#include <linux/string.h>
 
 #include "et61x251_sensor.h"
 
@@ -51,6 +53,7 @@
 #define ET61X251_ALTERNATE_SETTING   13
 #define ET61X251_URB_TIMEOUT         msecs_to_jiffies(2 * ET61X251_ISO_PACKETS)
 #define ET61X251_CTRL_TIMEOUT        100
+#define ET61X251_FRAME_TIMEOUT       2
 
 /*****************************************************************************/
 
@@ -127,15 +130,16 @@ struct et61x251_sysfs_attr {
 
 struct et61x251_module_param {
         u8 force_munmap;
+        u16 frame_timeout;
 };
 
-static DECLARE_MUTEX(et61x251_sysfs_lock);
+static DEFINE_MUTEX(et61x251_sysfs_lock);
 static DECLARE_RWSEM(et61x251_disconnect);
 
 struct et61x251_device {
         struct video_device* v4ldev;
 
-        struct et61x251_sensor* sensor;
+        struct et61x251_sensor sensor;
 
         struct usb_device* usbdev;
         struct urb* urb[ET61X251_URBS];
@@ -157,19 +161,28 @@ struct et61x251_device {
         enum et61x251_dev_state state;
         u8 users;
 
-        struct semaphore dev_sem, fileop_sem;
+        struct mutex dev_mutex, fileop_mutex;
         spinlock_t queue_lock;
         wait_queue_head_t open, wait_frame, wait_stream;
 };
 
 /*****************************************************************************/
 
+struct et61x251_device*
+et61x251_match_id(struct et61x251_device* cam, const struct usb_device_id *id)
+{
+        if (usb_match_id(usb_ifnum_to_if(cam->usbdev, 0), id))
+                return cam;
+
+        return NULL;
+}
+
+
 void
 et61x251_attach_sensor(struct et61x251_device* cam,
                        struct et61x251_sensor* sensor)
 {
-        cam->sensor = sensor;
-        cam->sensor->usbdev = cam->usbdev;
+        memcpy(&cam->sensor, sensor, sizeof(struct et61x251_sensor));
 }
 
 /*****************************************************************************/
@@ -212,7 +225,8 @@ do {                                                                          \
 
 #undef PDBG
 #define PDBG(fmt, args...)                                                    \
-dev_info(&cam->dev, "[%s:%d] " fmt "\n", __FUNCTION__, __LINE__ , ## args)
+dev_info(&cam->usbdev->dev, "[%s:%d] " fmt "\n",                              \
+         __FUNCTION__, __LINE__ , ## args)
 
 #undef PDBGG
 #define PDBGG(fmt, args...) do {;} while(0) /* placeholder */
diff --git a/drivers/usb/media/et61x251_core.c b/drivers/usb/media/et61x251_core.c
index 2c0171a5ad62..7cc01b828b3d 100644
--- a/drivers/usb/media/et61x251_core.c
+++ b/drivers/usb/media/et61x251_core.c
@@ -25,11 +25,9 @@
 #include <linux/moduleparam.h>
 #include <linux/errno.h>
 #include <linux/slab.h>
-#include <linux/string.h>
 #include <linux/device.h>
 #include <linux/fs.h>
 #include <linux/delay.h>
-#include <linux/stddef.h>
 #include <linux/compiler.h>
 #include <linux/ioctl.h>
 #include <linux/poll.h>
@@ -50,8 +48,8 @@
 #define ET61X251_MODULE_AUTHOR  "(C) 2006 Luca Risolia"
 #define ET61X251_AUTHOR_EMAIL   "<luca.risolia@studio.unibo.it>"
 #define ET61X251_MODULE_LICENSE "GPL"
-#define ET61X251_MODULE_VERSION "1:1.01"
-#define ET61X251_MODULE_VERSION_CODE  KERNEL_VERSION(1, 0, 1)
+#define ET61X251_MODULE_VERSION "1:1.02"
+#define ET61X251_MODULE_VERSION_CODE  KERNEL_VERSION(1, 0, 2)
 
 /*****************************************************************************/
 
@@ -90,6 +88,16 @@ MODULE_PARM_DESC(force_munmap,
                  "\nDefault value is "__MODULE_STRING(SN9C102_FORCE_MUNMAP)"."
                  "\n");
 
+static unsigned int frame_timeout[] = {[0 ... ET61X251_MAX_DEVICES-1] =
+                                       ET61X251_FRAME_TIMEOUT};
+module_param_array(frame_timeout, uint, NULL, 0644);
+MODULE_PARM_DESC(frame_timeout,
+                 "\n<n[,...]> Timeout for a video frame in seconds."
+                 "\nThis parameter is specific for each detected camera."
+                 "\nDefault value is "
+                 __MODULE_STRING(ET61X251_FRAME_TIMEOUT)"."
+                 "\n");
+
 #ifdef ET61X251_DEBUG
 static unsigned short debug = ET61X251_DEBUG_LEVEL;
 module_param(debug, ushort, 0644);
@@ -111,8 +119,8 @@ static u32
 et61x251_request_buffers(struct et61x251_device* cam, u32 count,
                          enum et61x251_io_method io)
 {
-        struct v4l2_pix_format* p = &(cam->sensor->pix_format);
-        struct v4l2_rect* r = &(cam->sensor->cropcap.bounds);
+        struct v4l2_pix_format* p = &(cam->sensor.pix_format);
+        struct v4l2_rect* r = &(cam->sensor.cropcap.bounds);
         const size_t imagesize = cam->module_param.force_munmap ||
                                  io == IO_READ ?
                                  (p->width * p->height * p->priv) / 8 :
@@ -268,8 +276,8 @@ et61x251_i2c_try_read(struct et61x251_device* cam,
         int err = 0, res;
 
         data[0] = address;
-        data[1] = cam->sensor->i2c_slave_id;
-        data[2] = cam->sensor->rsta | 0x10;
+        data[1] = cam->sensor.i2c_slave_id;
+        data[2] = cam->sensor.rsta | 0x10;
         data[3] = !(et61x251_read_reg(cam, 0x8b) & 0x02);
         res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00, 0x41,
                               0, 0x88, data, 4, ET61X251_CTRL_TIMEOUT);
@@ -301,8 +309,8 @@ et61x251_i2c_try_write(struct et61x251_device* cam,
         int err = 0, res;
 
         data[0] = address;
-        data[1] = cam->sensor->i2c_slave_id;
-        data[2] = cam->sensor->rsta | 0x12;
+        data[1] = cam->sensor.i2c_slave_id;
+        data[2] = cam->sensor.rsta | 0x12;
         res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00, 0x41,
                               0, 0x88, data, 3, ET61X251_CTRL_TIMEOUT);
         if (res < 0)
@@ -334,9 +342,6 @@ et61x251_i2c_raw_write(struct et61x251_device* cam, u8 n, u8 data1, u8 data2,
         u8* data = cam->control_buffer;
         int err = 0, res;
 
-        if (!cam->sensor)
-                return -1;
-
         data[0] = data2;
         data[1] = data3;
         data[2] = data4;
@@ -350,8 +355,8 @@ et61x251_i2c_raw_write(struct et61x251_device* cam, u8 n, u8 data1, u8 data2,
                 err += res;
 
         data[0] = address;
-        data[1] = cam->sensor->i2c_slave_id;
-        data[2] = cam->sensor->rsta | 0x02 | (n << 4);
+        data[1] = cam->sensor.i2c_slave_id;
+        data[2] = cam->sensor.rsta | 0x02 | (n << 4);
         res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00, 0x41,
                               0, 0x88, data, 3, ET61X251_CTRL_TIMEOUT);
         if (res < 0)
@@ -364,11 +369,11 @@ et61x251_i2c_raw_write(struct et61x251_device* cam, u8 n, u8 data1, u8 data2,
         if (res < 0)
                 err += res;
 
-        err += et61x251_i2c_wait(cam, cam->sensor);
+        err += et61x251_i2c_wait(cam, &cam->sensor);
 
         if (err)
                 DBG(3, "I2C raw write failed for %s image sensor",
-                    cam->sensor->name);
+                    cam->sensor.name);
 
         PDBGG("I2C raw write: %u bytes, address = 0x%02X, data1 = 0x%02X, "
               "data2 = 0x%02X, data3 = 0x%02X, data4 = 0x%02X, data5 = 0x%02X,"
@@ -382,19 +387,13 @@ et61x251_i2c_raw_write(struct et61x251_device* cam, u8 n, u8 data1, u8 data2,
 
 int et61x251_i2c_read(struct et61x251_device* cam, u8 address)
 {
-        if (!cam->sensor)
-                return -1;
-
-        return et61x251_i2c_try_read(cam, cam->sensor, address);
+        return et61x251_i2c_try_read(cam, &cam->sensor, address);
 }
 
 
 int et61x251_i2c_write(struct et61x251_device* cam, u8 address, u8 value)
 {
-        if (!cam->sensor)
-                return -1;
-
-        return et61x251_i2c_try_write(cam, cam->sensor, address, value);
+        return et61x251_i2c_try_write(cam, &cam->sensor, address, value);
 }
 
 /*****************************************************************************/
@@ -417,7 +416,7 @@ static void et61x251_urb_complete(struct urb *urb, struct pt_regs* regs)
                 if ((*f))
                         (*f)->state = F_QUEUED;
                 DBG(3, "Stream interrupted");
-                wake_up_interruptible(&cam->wait_stream);
+                wake_up(&cam->wait_stream);
         }
 
         if (cam->state & DEV_DISCONNECTED)
@@ -435,9 +434,9 @@ static void et61x251_urb_complete(struct urb *urb, struct pt_regs* regs)
                 (*f) = list_entry(cam->inqueue.next, struct et61x251_frame_t,
                                   frame);
 
-        imagesize = (cam->sensor->pix_format.width *
-                     cam->sensor->pix_format.height *
-                     cam->sensor->pix_format.priv) / 8;
+        imagesize = (cam->sensor.pix_format.width *
+                     cam->sensor.pix_format.height *
+                     cam->sensor.pix_format.priv) / 8;
 
         for (i = 0; i < urb->number_of_packets; i++) {
                 unsigned int len, status;
@@ -476,7 +475,7 @@ start_of_frame:
 
                 if ((*f)->state == F_GRABBING) {
                         if (sof && (*f)->buf.bytesused) {
-                                if (cam->sensor->pix_format.pixelformat ==
+                                if (cam->sensor.pix_format.pixelformat ==
                                                          V4L2_PIX_FMT_ET61X251)
                                         goto end_of_frame;
                                 else {
@@ -521,7 +520,7 @@ end_of_frame:
                                         goto resubmit_urb;
 
                                 if (sof &&
-                                    cam->sensor->pix_format.pixelformat ==
+                                    cam->sensor.pix_format.pixelformat ==
                                                          V4L2_PIX_FMT_ET61X251)
                                         goto start_of_frame;
                         }
@@ -650,21 +649,21 @@ static int et61x251_stop_transfer(struct et61x251_device* cam)
 
 static int et61x251_stream_interrupt(struct et61x251_device* cam)
 {
-        int err = 0;
+        long timeout;
 
         cam->stream = STREAM_INTERRUPT;
-        err = wait_event_timeout(cam->wait_stream,
-                                 (cam->stream == STREAM_OFF) ||
-                                 (cam->state & DEV_DISCONNECTED),
-                                 ET61X251_URB_TIMEOUT);
+        timeout = wait_event_timeout(cam->wait_stream,
+                                     (cam->stream == STREAM_OFF) ||
+                                     (cam->state & DEV_DISCONNECTED),
+                                     ET61X251_URB_TIMEOUT);
         if (cam->state & DEV_DISCONNECTED)
                 return -ENODEV;
-        else if (err) {
+        else if (cam->stream != STREAM_OFF) {
                 cam->state |= DEV_MISCONFIGURED;
                 DBG(1, "URB timeout reached. The camera is misconfigured. To "
                        "use it, close and open /dev/video%d again.",
                     cam->v4ldev->minor);
-                return err;
+                return -EIO;
         }
 
         return 0;
@@ -709,18 +708,18 @@ static ssize_t et61x251_show_reg(struct class_device* cd, char* buf)
         struct et61x251_device* cam;
         ssize_t count;
 
-        if (down_interruptible(&et61x251_sysfs_lock))
+        if (mutex_lock_interruptible(&et61x251_sysfs_lock))
                 return -ERESTARTSYS;
 
         cam = video_get_drvdata(to_video_device(cd));
         if (!cam) {
-                up(&et61x251_sysfs_lock);
+                mutex_unlock(&et61x251_sysfs_lock);
                 return -ENODEV;
         }
 
         count = sprintf(buf, "%u\n", cam->sysfs.reg);
 
-        up(&et61x251_sysfs_lock);
+        mutex_unlock(&et61x251_sysfs_lock);
 
         return count;
 }
@@ -733,18 +732,18 @@ et61x251_store_reg(struct class_device* cd, const char* buf, size_t len)
         u8 index;
         ssize_t count;
 
-        if (down_interruptible(&et61x251_sysfs_lock))
+        if (mutex_lock_interruptible(&et61x251_sysfs_lock))
                 return -ERESTARTSYS;
 
         cam = video_get_drvdata(to_video_device(cd));
         if (!cam) {
-                up(&et61x251_sysfs_lock);
+                mutex_unlock(&et61x251_sysfs_lock);
                 return -ENODEV;
         }
 
         index = et61x251_strtou8(buf, len, &count);
         if (index > 0x8e || !count) {
-                up(&et61x251_sysfs_lock);
+                mutex_unlock(&et61x251_sysfs_lock);
                 return -EINVAL;
         }
 
@@ -753,7 +752,7 @@ et61x251_store_reg(struct class_device* cd, const char* buf, size_t len)
         DBG(2, "Moved ET61X[12]51 register index to 0x%02X", cam->sysfs.reg);
         DBG(3, "Written bytes: %zd", count);
 
-        up(&et61x251_sysfs_lock);
+        mutex_unlock(&et61x251_sysfs_lock);
 
         return count;
 }
@@ -765,17 +764,17 @@ static ssize_t et61x251_show_val(struct class_device* cd, char* buf)
         ssize_t count;
         int val;
 
-        if (down_interruptible(&et61x251_sysfs_lock))
+        if (mutex_lock_interruptible(&et61x251_sysfs_lock))
                 return -ERESTARTSYS;
 
         cam = video_get_drvdata(to_video_device(cd));
         if (!cam) {
-                up(&et61x251_sysfs_lock);
+                mutex_unlock(&et61x251_sysfs_lock);
                 return -ENODEV;
         }
 
         if ((val = et61x251_read_reg(cam, cam->sysfs.reg)) < 0) {
-                up(&et61x251_sysfs_lock);
+                mutex_unlock(&et61x251_sysfs_lock);
                 return -EIO;
         }
 
@@ -783,7 +782,7 @@ static ssize_t et61x251_show_val(struct class_device* cd, char* buf)
 
         DBG(3, "Read bytes: %zd", count);
 
-        up(&et61x251_sysfs_lock);
+        mutex_unlock(&et61x251_sysfs_lock);
 
         return count;
 }
@@ -797,24 +796,24 @@ et61x251_store_val(struct class_device* cd, const char* buf, size_t len)
         ssize_t count;
         int err;
 
-        if (down_interruptible(&et61x251_sysfs_lock))
+        if (mutex_lock_interruptible(&et61x251_sysfs_lock))
                 return -ERESTARTSYS;
 
         cam = video_get_drvdata(to_video_device(cd));
         if (!cam) {
-                up(&et61x251_sysfs_lock);
+                mutex_unlock(&et61x251_sysfs_lock);
                 return -ENODEV;
         }
 
         value = et61x251_strtou8(buf, len, &count);
         if (!count) {
-                up(&et61x251_sysfs_lock);
+                mutex_unlock(&et61x251_sysfs_lock);
                 return -EINVAL;
         }
 
         err = et61x251_write_reg(cam, value, cam->sysfs.reg);
         if (err) {
-                up(&et61x251_sysfs_lock);
+                mutex_unlock(&et61x251_sysfs_lock);
                 return -EIO;
         }
 
@@ -822,7 +821,7 @@ et61x251_store_val(struct class_device* cd, const char* buf, size_t len)
             cam->sysfs.reg, value);
         DBG(3, "Written bytes: %zd", count);
 
-        up(&et61x251_sysfs_lock);
+        mutex_unlock(&et61x251_sysfs_lock);
 
         return count;
 }
@@ -833,12 +832,12 @@ static ssize_t et61x251_show_i2c_reg(struct class_device* cd, char* buf)
         struct et61x251_device* cam;
         ssize_t count;
 
-        if (down_interruptible(&et61x251_sysfs_lock))
+        if (mutex_lock_interruptible(&et61x251_sysfs_lock))
                 return -ERESTARTSYS;
 
         cam = video_get_drvdata(to_video_device(cd));
         if (!cam) {
-                up(&et61x251_sysfs_lock);
+                mutex_unlock(&et61x251_sysfs_lock);
                 return -ENODEV;
         }
 
@@ -846,7 +845,7 @@ static ssize_t et61x251_show_i2c_reg(struct class_device* cd, char* buf)
 
         DBG(3, "Read bytes: %zd", count);
 
-        up(&et61x251_sysfs_lock);
+        mutex_unlock(&et61x251_sysfs_lock);
 
         return count;
 }
@@ -859,18 +858,18 @@ et61x251_store_i2c_reg(struct class_device* cd, const char* buf, size_t len)
         u8 index;
         ssize_t count;
 
-        if (down_interruptible(&et61x251_sysfs_lock))
+        if (mutex_lock_interruptible(&et61x251_sysfs_lock))
                 return -ERESTARTSYS;
 
         cam = video_get_drvdata(to_video_device(cd));
         if (!cam) {
-                up(&et61x251_sysfs_lock);
+                mutex_unlock(&et61x251_sysfs_lock);
                 return -ENODEV;
         }
 
         index = et61x251_strtou8(buf, len, &count);
         if (!count) {
-                up(&et61x251_sysfs_lock);
+                mutex_unlock(&et61x251_sysfs_lock);
                 return -EINVAL;
         }
 
@@ -879,7 +878,7 @@ et61x251_store_i2c_reg(struct class_device* cd, const char* buf, size_t len)
         DBG(2, "Moved sensor register index to 0x%02X", cam->sysfs.i2c_reg);
         DBG(3, "Written bytes: %zd", count);
 
-        up(&et61x251_sysfs_lock);
+        mutex_unlock(&et61x251_sysfs_lock);
 
         return count;
 }
@@ -891,22 +890,22 @@ static ssize_t et61x251_show_i2c_val(struct class_device* cd, char* buf)
         ssize_t count;
         int val;
 
-        if (down_interruptible(&et61x251_sysfs_lock))
+        if (mutex_lock_interruptible(&et61x251_sysfs_lock))
                 return -ERESTARTSYS;
 
         cam = video_get_drvdata(to_video_device(cd));
         if (!cam) {
-                up(&et61x251_sysfs_lock);
+                mutex_unlock(&et61x251_sysfs_lock);
                 return -ENODEV;
         }
 
-        if (!(cam->sensor->sysfs_ops & ET61X251_I2C_READ)) {
-                up(&et61x251_sysfs_lock);
+        if (!(cam->sensor.sysfs_ops & ET61X251_I2C_READ)) {
+                mutex_unlock(&et61x251_sysfs_lock);
                 return -ENOSYS;
         }
 
         if ((val = et61x251_i2c_read(cam, cam->sysfs.i2c_reg)) < 0) {
-                up(&et61x251_sysfs_lock);
+                mutex_unlock(&et61x251_sysfs_lock);
                 return -EIO;
         }
 
@@ -914,7 +913,7 @@ static ssize_t et61x251_show_i2c_val(struct class_device* cd, char* buf)
 
         DBG(3, "Read bytes: %zd", count);
 
-        up(&et61x251_sysfs_lock);
+        mutex_unlock(&et61x251_sysfs_lock);
 
         return count;
 }
@@ -928,29 +927,29 @@ et61x251_store_i2c_val(struct class_device* cd, const char* buf, size_t len)
         ssize_t count;
         int err;
 
-        if (down_interruptible(&et61x251_sysfs_lock))
+        if (mutex_lock_interruptible(&et61x251_sysfs_lock))
                 return -ERESTARTSYS;
 
         cam = video_get_drvdata(to_video_device(cd));
         if (!cam) {
-                up(&et61x251_sysfs_lock);
+                mutex_unlock(&et61x251_sysfs_lock);
                 return -ENODEV;
         }
 
-        if (!(cam->sensor->sysfs_ops & ET61X251_I2C_READ)) {
-                up(&et61x251_sysfs_lock);
+        if (!(cam->sensor.sysfs_ops & ET61X251_I2C_READ)) {
+                mutex_unlock(&et61x251_sysfs_lock);
                 return -ENOSYS;
         }
 
         value = et61x251_strtou8(buf, len, &count);
         if (!count) {
-                up(&et61x251_sysfs_lock);
+                mutex_unlock(&et61x251_sysfs_lock);
                 return -EINVAL;
         }
 
         err = et61x251_i2c_write(cam, cam->sysfs.i2c_reg, value);
         if (err) {
-                up(&et61x251_sysfs_lock);
+                mutex_unlock(&et61x251_sysfs_lock);
                 return -EIO;
         }
 
@@ -958,7 +957,7 @@ et61x251_store_i2c_val(struct class_device* cd, const char* buf, size_t len)
             cam->sysfs.i2c_reg, value);
         DBG(3, "Written bytes: %zd", count);
 
-        up(&et61x251_sysfs_lock);
+        mutex_unlock(&et61x251_sysfs_lock);
 
         return count;
 }
@@ -980,7 +979,7 @@ static void et61x251_create_sysfs(struct et61x251_device* cam)
 
         video_device_create_file(v4ldev, &class_device_attr_reg);
         video_device_create_file(v4ldev, &class_device_attr_val);
-        if (cam->sensor && cam->sensor->sysfs_ops) {
+        if (cam->sensor.sysfs_ops) {
                 video_device_create_file(v4ldev, &class_device_attr_i2c_reg);
                 video_device_create_file(v4ldev, &class_device_attr_i2c_val);
         }
@@ -1048,7 +1047,7 @@ static int et61x251_set_scale(struct et61x251_device* cam, u8 scale)
 static int
 et61x251_set_crop(struct et61x251_device* cam, struct v4l2_rect* rect)
 {
-        struct et61x251_sensor* s = cam->sensor;
+        struct et61x251_sensor* s = &cam->sensor;
         u16 fmw_sx = (u16)(rect->left - s->cropcap.bounds.left +
                            s->active_pixel.left),
             fmw_sy = (u16)(rect->top - s->cropcap.bounds.top +
@@ -1076,7 +1075,7 @@ et61x251_set_crop(struct et61x251_device* cam, struct v4l2_rect* rect)
 
 static int et61x251_init(struct et61x251_device* cam)
 {
-        struct et61x251_sensor* s = cam->sensor;
+        struct et61x251_sensor* s = &cam->sensor;
         struct v4l2_control ctrl;
         struct v4l2_queryctrl *qctrl;
         struct v4l2_rect* rect;
@@ -1143,7 +1142,7 @@ static int et61x251_init(struct et61x251_device* cam)
         }
 
         if (!(cam->state & DEV_INITIALIZED)) {
-                init_MUTEX(&cam->fileop_sem);
+                mutex_init(&cam->fileop_mutex);
                 spin_lock_init(&cam->queue_lock);
                 init_waitqueue_head(&cam->wait_frame);
                 init_waitqueue_head(&cam->wait_stream);
@@ -1161,13 +1160,15 @@ static int et61x251_init(struct et61x251_device* cam)
 
 static void et61x251_release_resources(struct et61x251_device* cam)
 {
-        down(&et61x251_sysfs_lock);
+        mutex_lock(&et61x251_sysfs_lock);
 
         DBG(2, "V4L2 device /dev/video%d deregistered", cam->v4ldev->minor);
         video_set_drvdata(cam->v4ldev, NULL);
         video_unregister_device(cam->v4ldev);
 
-        up(&et61x251_sysfs_lock);
+        usb_put_dev(cam->usbdev);
+
+        mutex_unlock(&et61x251_sysfs_lock);
 
         kfree(cam->control_buffer);
 }
@@ -1188,7 +1189,7 @@ static int et61x251_open(struct inode* inode, struct file* filp)
 
         cam = video_get_drvdata(video_devdata(filp));
 
-        if (down_interruptible(&cam->dev_sem)) {
+        if (mutex_lock_interruptible(&cam->dev_mutex)) {
                 up_read(&et61x251_disconnect);
                 return -ERESTARTSYS;
         }
@@ -1200,7 +1201,7 @@ static int et61x251_open(struct inode* inode, struct file* filp)
                         err = -EWOULDBLOCK;
                         goto out;
                 }
-                up(&cam->dev_sem);
+                mutex_unlock(&cam->dev_mutex);
                 err = wait_event_interruptible_exclusive(cam->open,
                                                   cam->state & DEV_DISCONNECTED
                                                          || !cam->users);
@@ -1212,7 +1213,7 @@ static int et61x251_open(struct inode* inode, struct file* filp)
                         up_read(&et61x251_disconnect);
                         return -ENODEV;
                 }
-                down(&cam->dev_sem);
+                mutex_lock(&cam->dev_mutex);
         }
 
 
@@ -1240,7 +1241,7 @@ static int et61x251_open(struct inode* inode, struct file* filp)
         DBG(3, "Video device /dev/video%d is open", cam->v4ldev->minor);
 
 out:
-        up(&cam->dev_sem);
+        mutex_unlock(&cam->dev_mutex);
         up_read(&et61x251_disconnect);
         return err;
 }
@@ -1250,7 +1251,7 @@ static int et61x251_release(struct inode* inode, struct file* filp)
 {
         struct et61x251_device* cam = video_get_drvdata(video_devdata(filp));
 
-        down(&cam->dev_sem); /* prevent disconnect() to be called */
+        mutex_lock(&cam->dev_mutex); /* prevent disconnect() to be called */
 
         et61x251_stop_transfer(cam);
 
@@ -1258,7 +1259,7 @@ static int et61x251_release(struct inode* inode, struct file* filp)
 
         if (cam->state & DEV_DISCONNECTED) {
                 et61x251_release_resources(cam);
-                up(&cam->dev_sem);
+                mutex_unlock(&cam->dev_mutex);
                 kfree(cam);
                 return 0;
         }
@@ -1268,7 +1269,7 @@ static int et61x251_release(struct inode* inode, struct file* filp)
 
         DBG(3, "Video device /dev/video%d closed", cam->v4ldev->minor);
 
-        up(&cam->dev_sem);
+        mutex_unlock(&cam->dev_mutex);
 
         return 0;
 }
@@ -1281,28 +1282,29 @@ et61x251_read(struct file* filp, char __user * buf,
         struct et61x251_device* cam = video_get_drvdata(video_devdata(filp));
         struct et61x251_frame_t* f, * i;
         unsigned long lock_flags;
+        long timeout;
         int err = 0;
 
-        if (down_interruptible(&cam->fileop_sem))
+        if (mutex_lock_interruptible(&cam->fileop_mutex))
                 return -ERESTARTSYS;
 
         if (cam->state & DEV_DISCONNECTED) {
                 DBG(1, "Device not present");
-                up(&cam->fileop_sem);
+                mutex_unlock(&cam->fileop_mutex);
                 return -ENODEV;
         }
 
         if (cam->state & DEV_MISCONFIGURED) {
                 DBG(1, "The camera is misconfigured. Close and open it "
                        "again.");
-                up(&cam->fileop_sem);
+                mutex_unlock(&cam->fileop_mutex);
                 return -EIO;
         }
 
         if (cam->io == IO_MMAP) {
                 DBG(3, "Close and open the device again to choose the read "
                        "method");
-                up(&cam->fileop_sem);
+                mutex_unlock(&cam->fileop_mutex);
                 return -EINVAL;
         }
 
@@ -1310,7 +1312,7 @@ et61x251_read(struct file* filp, char __user * buf,
                 if (!et61x251_request_buffers(cam, cam->nreadbuffers,
                                               IO_READ)) {
                         DBG(1, "read() failed, not enough memory");
-                        up(&cam->fileop_sem);
+                        mutex_unlock(&cam->fileop_mutex);
                         return -ENOMEM;
                 }
                 cam->io = IO_READ;
@@ -1324,30 +1326,32 @@ et61x251_read(struct file* filp, char __user * buf,
         }
 
         if (!count) {
-                up(&cam->fileop_sem);
+                mutex_unlock(&cam->fileop_mutex);
                 return 0;
         }
 
         if (list_empty(&cam->outqueue)) {
                 if (filp->f_flags & O_NONBLOCK) {
-                        up(&cam->fileop_sem);
+                        mutex_unlock(&cam->fileop_mutex);
                         return -EAGAIN;
                 }
-                err = wait_event_interruptible
-                      ( cam->wait_frame,
-                        (!list_empty(&cam->outqueue)) ||
-                        (cam->state & DEV_DISCONNECTED) ||
-                        (cam->state & DEV_MISCONFIGURED) );
-                if (err) {
-                        up(&cam->fileop_sem);
-                        return err;
+                timeout = wait_event_interruptible_timeout
+                          ( cam->wait_frame,
+                            (!list_empty(&cam->outqueue)) ||
+                            (cam->state & DEV_DISCONNECTED) ||
+                            (cam->state & DEV_MISCONFIGURED),
+                            cam->module_param.frame_timeout *
+                            1000 * msecs_to_jiffies(1) );
+                if (timeout < 0) {
+                        mutex_unlock(&cam->fileop_mutex);
+                        return timeout;
                 }
                 if (cam->state & DEV_DISCONNECTED) {
-                        up(&cam->fileop_sem);
+                        mutex_unlock(&cam->fileop_mutex);
                         return -ENODEV;
                 }
-                if (cam->state & DEV_MISCONFIGURED) {
-                        up(&cam->fileop_sem);
+                if (!timeout || (cam->state & DEV_MISCONFIGURED)) {
+                        mutex_unlock(&cam->fileop_mutex);
                         return -EIO;
                 }
         }
@@ -1375,7 +1379,7 @@ exit:
         PDBGG("Frame #%lu, bytes read: %zu",
               (unsigned long)f->buf.index, count);
 
-        up(&cam->fileop_sem);
+        mutex_unlock(&cam->fileop_mutex);
 
         return err ? err : count;
 }
@@ -1388,7 +1392,7 @@ static unsigned int et61x251_poll(struct file *filp, poll_table *wait)
         unsigned long lock_flags;
         unsigned int mask = 0;
 
-        if (down_interruptible(&cam->fileop_sem))
+        if (mutex_lock_interruptible(&cam->fileop_mutex))
                 return POLLERR;
 
         if (cam->state & DEV_DISCONNECTED) {
@@ -1426,12 +1430,12 @@ static unsigned int et61x251_poll(struct file *filp, poll_table *wait)
         if (!list_empty(&cam->outqueue))
                 mask |= POLLIN | POLLRDNORM;
 
-        up(&cam->fileop_sem);
+        mutex_unlock(&cam->fileop_mutex);
 
         return mask;
 
 error:
-        up(&cam->fileop_sem);
+        mutex_unlock(&cam->fileop_mutex);
         return POLLERR;
 }
 
@@ -1465,25 +1469,25 @@ static int et61x251_mmap(struct file* filp, struct vm_area_struct *vma)
         void *pos;
         u32 i;
 
-        if (down_interruptible(&cam->fileop_sem))
+        if (mutex_lock_interruptible(&cam->fileop_mutex))
                 return -ERESTARTSYS;
 
         if (cam->state & DEV_DISCONNECTED) {
                 DBG(1, "Device not present");
-                up(&cam->fileop_sem);
+                mutex_unlock(&cam->fileop_mutex);
                 return -ENODEV;
         }
 
         if (cam->state & DEV_MISCONFIGURED) {
                 DBG(1, "The camera is misconfigured. Close and open it "
                        "again.");
-                up(&cam->fileop_sem);
+                mutex_unlock(&cam->fileop_mutex);
                 return -EIO;
         }
 
         if (cam->io != IO_MMAP || !(vma->vm_flags & VM_WRITE) ||
             size != PAGE_ALIGN(cam->frame[0].buf.length)) {
-                up(&cam->fileop_sem);
+                mutex_unlock(&cam->fileop_mutex);
                 return -EINVAL;
         }
 
@@ -1492,7 +1496,7 @@ static int et61x251_mmap(struct file* filp, struct vm_area_struct *vma)
                         break;
         }
         if (i == cam->nbuffers) {
-                up(&cam->fileop_sem);
+                mutex_unlock(&cam->fileop_mutex);
                 return -EINVAL;
         }
 
@@ -1502,7 +1506,7 @@ static int et61x251_mmap(struct file* filp, struct vm_area_struct *vma)
         pos = cam->frame[i].bufmem;
         while (size > 0) { /* size is page-aligned */
                 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
-                        up(&cam->fileop_sem);
+                        mutex_unlock(&cam->fileop_mutex);
                         return -EAGAIN;
                 }
                 start += PAGE_SIZE;
@@ -1515,7 +1519,7 @@ static int et61x251_mmap(struct file* filp, struct vm_area_struct *vma)
 
         et61x251_vm_open(vma);
 
-        up(&cam->fileop_sem);
+        mutex_unlock(&cam->fileop_mutex);
 
         return 0;
 }
@@ -1557,6 +1561,7 @@ et61x251_vidioc_enuminput(struct et61x251_device* cam, void __user * arg)
 
         memset(&i, 0, sizeof(i));
         strcpy(i.name, "Camera");
+        i.type = V4L2_INPUT_TYPE_CAMERA;
 
         if (copy_to_user(arg, &i, sizeof(i)))
                 return -EFAULT;
@@ -1566,7 +1571,19 @@ et61x251_vidioc_enuminput(struct et61x251_device* cam, void __user * arg)
 
 
 static int
-et61x251_vidioc_gs_input(struct et61x251_device* cam, void __user * arg)
+et61x251_vidioc_g_input(struct et61x251_device* cam, void __user * arg)
+{
+        int index = 0;
+
+        if (copy_to_user(arg, &index, sizeof(index)))
+                return -EFAULT;
+
+        return 0;
+}
+
+
+static int
+et61x251_vidioc_s_input(struct et61x251_device* cam, void __user * arg)
 {
         int index;
 
@@ -1583,7 +1600,7 @@ et61x251_vidioc_gs_input(struct et61x251_device* cam, void __user * arg)
 static int
 et61x251_vidioc_query_ctrl(struct et61x251_device* cam, void __user * arg)
 {
-        struct et61x251_sensor* s = cam->sensor;
+        struct et61x251_sensor* s = &cam->sensor;
         struct v4l2_queryctrl qc;
         u8 i;
 
@@ -1605,7 +1622,7 @@ et61x251_vidioc_query_ctrl(struct et61x251_device* cam, void __user * arg)
 static int
 et61x251_vidioc_g_ctrl(struct et61x251_device* cam, void __user * arg)
 {
-        struct et61x251_sensor* s = cam->sensor;
+        struct et61x251_sensor* s = &cam->sensor;
         struct v4l2_control ctrl;
         int err = 0;
         u8 i;
@@ -1637,7 +1654,7 @@ exit:
 static int
 et61x251_vidioc_s_ctrl(struct et61x251_device* cam, void __user * arg)
 {
-        struct et61x251_sensor* s = cam->sensor;
+        struct et61x251_sensor* s = &cam->sensor;
         struct v4l2_control ctrl;
         u8 i;
         int err = 0;
@@ -1650,6 +1667,8 @@ et61x251_vidioc_s_ctrl(struct et61x251_device* cam, void __user * arg)
 
         for (i = 0; i < ARRAY_SIZE(s->qctrl); i++)
                 if (ctrl.id == s->qctrl[i].id) {
+                        if (s->qctrl[i].flags & V4L2_CTRL_FLAG_DISABLED)
+                                return -EINVAL;
                         if (ctrl.value < s->qctrl[i].minimum ||
                             ctrl.value > s->qctrl[i].maximum)
                                 return -ERANGE;
@@ -1669,7 +1688,7 @@ et61x251_vidioc_s_ctrl(struct et61x251_device* cam, void __user * arg)
 static int
 et61x251_vidioc_cropcap(struct et61x251_device* cam, void __user * arg)
 {
-        struct v4l2_cropcap* cc = &(cam->sensor->cropcap);
+        struct v4l2_cropcap* cc = &(cam->sensor.cropcap);
 
         cc->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
         cc->pixelaspect.numerator = 1;
@@ -1685,7 +1704,7 @@ et61x251_vidioc_cropcap(struct et61x251_device* cam, void __user * arg)
 static int
 et61x251_vidioc_g_crop(struct et61x251_device* cam, void __user * arg)
 {
-        struct et61x251_sensor* s = cam->sensor;
+        struct et61x251_sensor* s = &cam->sensor;
         struct v4l2_crop crop = {
                 .type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
         };
@@ -1702,7 +1721,7 @@ et61x251_vidioc_g_crop(struct et61x251_device* cam, void __user * arg)
 static int
 et61x251_vidioc_s_crop(struct et61x251_device* cam, void __user * arg)
 {
-        struct et61x251_sensor* s = cam->sensor;
+        struct et61x251_sensor* s = &cam->sensor;
         struct v4l2_crop crop;
         struct v4l2_rect* rect;
         struct v4l2_rect* bounds = &(s->cropcap.bounds);
@@ -1843,7 +1862,7 @@ static int
 et61x251_vidioc_g_fmt(struct et61x251_device* cam, void __user * arg)
 {
         struct v4l2_format format;
-        struct v4l2_pix_format* pfmt = &(cam->sensor->pix_format);
+        struct v4l2_pix_format* pfmt = &(cam->sensor.pix_format);
 
         if (copy_from_user(&format, arg, sizeof(format)))
                 return -EFAULT;
@@ -1868,7 +1887,7 @@ static int
 et61x251_vidioc_try_s_fmt(struct et61x251_device* cam, unsigned int cmd,
                           void __user * arg)
 {
-        struct et61x251_sensor* s = cam->sensor;
+        struct et61x251_sensor* s = &cam->sensor;
         struct v4l2_format format;
         struct v4l2_pix_format* pix;
         struct v4l2_pix_format* pfmt = &(s->pix_format);
@@ -2155,7 +2174,7 @@ et61x251_vidioc_dqbuf(struct et61x251_device* cam, struct file* filp,
         struct v4l2_buffer b;
         struct et61x251_frame_t *f;
         unsigned long lock_flags;
-        int err = 0;
+        long timeout;
 
         if (copy_from_user(&b, arg, sizeof(b)))
                 return -EFAULT;
@@ -2168,16 +2187,18 @@ et61x251_vidioc_dqbuf(struct et61x251_device* cam, struct file* filp,
                         return -EINVAL;
                 if (filp->f_flags & O_NONBLOCK)
                         return -EAGAIN;
-                err = wait_event_interruptible
-                      ( cam->wait_frame,
-                        (!list_empty(&cam->outqueue)) ||
-                        (cam->state & DEV_DISCONNECTED) ||
-                        (cam->state & DEV_MISCONFIGURED) );
-                if (err)
-                        return err;
+                timeout = wait_event_interruptible_timeout
+                          ( cam->wait_frame,
+                            (!list_empty(&cam->outqueue)) ||
+                            (cam->state & DEV_DISCONNECTED) ||
+                            (cam->state & DEV_MISCONFIGURED),
+                            cam->module_param.frame_timeout *
+                            1000 * msecs_to_jiffies(1) );
+                if (timeout < 0)
+                        return timeout;
                 if (cam->state & DEV_DISCONNECTED)
                         return -ENODEV;
-                if (cam->state & DEV_MISCONFIGURED)
+                if (!timeout || (cam->state & DEV_MISCONFIGURED))
                         return -EIO;
         }
 
@@ -2309,8 +2330,10 @@ static int et61x251_ioctl_v4l2(struct inode* inode, struct file* filp,
                 return et61x251_vidioc_enuminput(cam, arg);
 
         case VIDIOC_G_INPUT:
+                return et61x251_vidioc_g_input(cam, arg);
+
         case VIDIOC_S_INPUT:
-                return et61x251_vidioc_gs_input(cam, arg);
+                return et61x251_vidioc_s_input(cam, arg);
 
         case VIDIOC_QUERYCTRL:
                 return et61x251_vidioc_query_ctrl(cam, arg);
@@ -2393,19 +2416,19 @@ static int et61x251_ioctl(struct inode* inode, struct file* filp,
         struct et61x251_device* cam = video_get_drvdata(video_devdata(filp));
         int err = 0;
 
-        if (down_interruptible(&cam->fileop_sem))
+        if (mutex_lock_interruptible(&cam->fileop_mutex))
                 return -ERESTARTSYS;
 
         if (cam->state & DEV_DISCONNECTED) {
                 DBG(1, "Device not present");
-                up(&cam->fileop_sem);
+                mutex_unlock(&cam->fileop_mutex);
                 return -ENODEV;
         }
 
         if (cam->state & DEV_MISCONFIGURED) {
                 DBG(1, "The camera is misconfigured. Close and open it "
                        "again.");
-                up(&cam->fileop_sem);
+                mutex_unlock(&cam->fileop_mutex);
                 return -EIO;
         }
 
@@ -2413,7 +2436,7 @@ static int et61x251_ioctl(struct inode* inode, struct file* filp,
 
         err = et61x251_ioctl_v4l2(inode, filp, cmd, (void __user *)arg);
 
-        up(&cam->fileop_sem);
+        mutex_unlock(&cam->fileop_mutex);
 
         return err;
 }
@@ -2459,7 +2482,7 @@ et61x251_usb_probe(struct usb_interface* intf, const struct usb_device_id* id)
                 goto fail;
         }
 
-        init_MUTEX(&cam->dev_sem);
+        mutex_init(&cam->dev_mutex);
 
         DBG(2, "ET61X[12]51 PC Camera Controller detected "
                "(vid/pid 0x%04X/0x%04X)",id->idVendor, id->idProduct);
@@ -2470,8 +2493,8 @@ et61x251_usb_probe(struct usb_interface* intf, const struct usb_device_id* id)
                         break;
         }
 
-        if (!err && cam->sensor)
-                DBG(2, "%s image sensor detected", cam->sensor->name);
+        if (!err)
+                DBG(2, "%s image sensor detected", cam->sensor.name);
         else {
                 DBG(1, "No supported image sensor detected");
                 err = -ENODEV;
@@ -2492,7 +2515,7 @@ et61x251_usb_probe(struct usb_interface* intf, const struct usb_device_id* id)
         cam->v4ldev->release = video_device_release;
         video_set_drvdata(cam->v4ldev, cam);
 
-        down(&cam->dev_sem);
+        mutex_lock(&cam->dev_mutex);
 
         err = video_register_device(cam->v4ldev, VFL_TYPE_GRABBER,
                                     video_nr[dev_nr]);
@@ -2502,13 +2525,14 @@ et61x251_usb_probe(struct usb_interface* intf, const struct usb_device_id* id)
                         DBG(1, "Free /dev/videoX node not found");
                 video_nr[dev_nr] = -1;
                 dev_nr = (dev_nr < ET61X251_MAX_DEVICES-1) ? dev_nr+1 : 0;
-                up(&cam->dev_sem);
+                mutex_unlock(&cam->dev_mutex);
                 goto fail;
         }
 
         DBG(2, "V4L2 device registered as /dev/video%d", cam->v4ldev->minor);
 
         cam->module_param.force_munmap = force_munmap[dev_nr];
+        cam->module_param.frame_timeout = frame_timeout[dev_nr];
 
         dev_nr = (dev_nr < ET61X251_MAX_DEVICES-1) ? dev_nr+1 : 0;
 
@@ -2519,7 +2543,7 @@ et61x251_usb_probe(struct usb_interface* intf, const struct usb_device_id* id)
 
         usb_set_intfdata(intf, cam);
 
-        up(&cam->dev_sem);
+        mutex_unlock(&cam->dev_mutex);
 
         return 0;
 
@@ -2543,7 +2567,7 @@ static void et61x251_usb_disconnect(struct usb_interface* intf)
 
         down_write(&et61x251_disconnect);
 
-        down(&cam->dev_sem);
+        mutex_lock(&cam->dev_mutex);
 
         DBG(2, "Disconnecting %s...", cam->v4ldev->name);
 
@@ -2557,13 +2581,14 @@ static void et61x251_usb_disconnect(struct usb_interface* intf)
                 et61x251_stop_transfer(cam);
                 cam->state |= DEV_DISCONNECTED;
                 wake_up_interruptible(&cam->wait_frame);
-                wake_up_interruptible(&cam->wait_stream);
+                wake_up(&cam->wait_stream);
+                usb_get_dev(cam->usbdev);
         } else {
                 cam->state |= DEV_DISCONNECTED;
                 et61x251_release_resources(cam);
         }
 
-        up(&cam->dev_sem);
+        mutex_unlock(&cam->dev_mutex);
 
         if (!cam->users)
                 kfree(cam);
diff --git a/drivers/usb/media/et61x251_sensor.h b/drivers/usb/media/et61x251_sensor.h
index b9df91062fc0..56841ae8a207 100644
--- a/drivers/usb/media/et61x251_sensor.h
+++ b/drivers/usb/media/et61x251_sensor.h
@@ -42,6 +42,9 @@ static int (*et61x251_sensor_table[])(struct et61x251_device*) = {            \
         NULL,                                                                 \
 };
 
+extern struct et61x251_device*
+et61x251_match_id(struct et61x251_device* cam, const struct usb_device_id *id);
+
 extern void
 et61x251_attach_sensor(struct et61x251_device* cam,
                        struct et61x251_sensor* sensor);
@@ -105,8 +108,6 @@ struct et61x251_sensor {
         int (*set_pix_format)(struct et61x251_device* cam,
                               const struct v4l2_pix_format* pix);
 
-        const struct usb_device* usbdev;
-
         /* Private */
         struct v4l2_queryctrl _qctrl[ET61X251_MAX_CTRLS];
         struct v4l2_rect _rect;
diff --git a/drivers/usb/media/et61x251_tas5130d1b.c b/drivers/usb/media/et61x251_tas5130d1b.c
index 65f1ae9cf2b3..3998d76a307a 100644
--- a/drivers/usb/media/et61x251_tas5130d1b.c
+++ b/drivers/usb/media/et61x251_tas5130d1b.c
@@ -126,12 +126,16 @@ static struct et61x251_sensor tas5130d1b = {
 
 int et61x251_probe_tas5130d1b(struct et61x251_device* cam)
 {
-        /* This sensor has no identifiers, so let's attach it anyway */
-        et61x251_attach_sensor(cam, &tas5130d1b);
+        const struct usb_device_id tas5130d1b_id_table[] = {
+                { USB_DEVICE(0x102c, 0x6251), },
+                { }
+        };
 
         /* Sensor detection is based on USB pid/vid */
-        if (le16_to_cpu(tas5130d1b.usbdev->descriptor.idProduct) != 0x6251)
+        if (!et61x251_match_id(cam, tas5130d1b_id_table))
                 return -ENODEV;
 
+        et61x251_attach_sensor(cam, &tas5130d1b);
+
         return 0;
 }
diff --git a/drivers/usb/media/ov511.c b/drivers/usb/media/ov511.c
index 51e9cc06f7e3..da44579d6f29 100644
--- a/drivers/usb/media/ov511.c
+++ b/drivers/usb/media/ov511.c
@@ -365,14 +365,14 @@ reg_w(struct usb_ov511 *ov, unsigned char reg, unsigned char value)
 
         PDEBUG(5, "0x%02X:0x%02X", reg, value);
 
-        down(&ov->cbuf_lock);
+        mutex_lock(&ov->cbuf_lock);
         ov->cbuf[0] = value;
         rc = usb_control_msg(ov->dev,
                              usb_sndctrlpipe(ov->dev, 0),
                              (ov->bclass == BCL_OV518)?1:2 /* REG_IO */,
                              USB_TYPE_VENDOR | USB_RECIP_DEVICE,
                              0, (__u16)reg, &ov->cbuf[0], 1, 1000);
-        up(&ov->cbuf_lock);
+        mutex_unlock(&ov->cbuf_lock);
 
         if (rc < 0)
                 err("reg write: error %d: %s", rc, symbolic(urb_errlist, rc));
@@ -387,7 +387,7 @@ reg_r(struct usb_ov511 *ov, unsigned char reg)
 {
         int rc;
 
-        down(&ov->cbuf_lock);
+        mutex_lock(&ov->cbuf_lock);
         rc = usb_control_msg(ov->dev,
                              usb_rcvctrlpipe(ov->dev, 0),
                              (ov->bclass == BCL_OV518)?1:3 /* REG_IO */,
@@ -401,7 +401,7 @@ reg_r(struct usb_ov511 *ov, unsigned char reg)
                 PDEBUG(5, "0x%02X:0x%02X", reg, ov->cbuf[0]);
         }
 
-        up(&ov->cbuf_lock);
+        mutex_unlock(&ov->cbuf_lock);
 
         return rc;
 }
@@ -444,7 +444,7 @@ ov518_reg_w32(struct usb_ov511 *ov, unsigned char reg, u32 val, int n)
 
         PDEBUG(5, "0x%02X:%7d, n=%d", reg, val, n);
 
-        down(&ov->cbuf_lock);
+        mutex_lock(&ov->cbuf_lock);
 
         *((__le32 *)ov->cbuf) = __cpu_to_le32(val);
 
@@ -453,7 +453,7 @@ ov518_reg_w32(struct usb_ov511 *ov, unsigned char reg, u32 val, int n)
                              1 /* REG_IO */,
                              USB_TYPE_VENDOR | USB_RECIP_DEVICE,
                              0, (__u16)reg, ov->cbuf, n, 1000);
-        up(&ov->cbuf_lock);
+        mutex_unlock(&ov->cbuf_lock);
 
         if (rc < 0)
                 err("reg write multiple: error %d: %s", rc,
@@ -768,14 +768,14 @@ i2c_r(struct usb_ov511 *ov, unsigned char reg)
 {
         int rc;
 
-        down(&ov->i2c_lock);
+        mutex_lock(&ov->i2c_lock);
 
         if (ov->bclass == BCL_OV518)
                 rc = ov518_i2c_read_internal(ov, reg);
         else
                 rc = ov511_i2c_read_internal(ov, reg);
 
-        up(&ov->i2c_lock);
+        mutex_unlock(&ov->i2c_lock);
 
         return rc;
 }
@@ -785,14 +785,14 @@ i2c_w(struct usb_ov511 *ov, unsigned char reg, unsigned char value)
 {
         int rc;
 
-        down(&ov->i2c_lock);
+        mutex_lock(&ov->i2c_lock);
 
         if (ov->bclass == BCL_OV518)
                 rc = ov518_i2c_write_internal(ov, reg, value);
         else
                 rc = ov511_i2c_write_internal(ov, reg, value);
 
-        up(&ov->i2c_lock);
+        mutex_unlock(&ov->i2c_lock);
 
         return rc;
 }
@@ -842,9 +842,9 @@ i2c_w_mask(struct usb_ov511 *ov,
 {
         int rc;
 
-        down(&ov->i2c_lock);
+        mutex_lock(&ov->i2c_lock);
         rc = ov51x_i2c_write_mask_internal(ov, reg, value, mask);
-        up(&ov->i2c_lock);
+        mutex_unlock(&ov->i2c_lock);
 
         return rc;
 }
@@ -880,7 +880,7 @@ i2c_w_slave(struct usb_ov511 *ov,
 {
         int rc = 0;
 
-        down(&ov->i2c_lock);
+        mutex_lock(&ov->i2c_lock);
 
         /* Set new slave IDs */
         rc = i2c_set_slave_internal(ov, slave);
@@ -894,7 +894,7 @@ out:
         if (i2c_set_slave_internal(ov, ov->primary_i2c_slave) < 0)
                 err("Couldn't restore primary I2C slave");
 
-        up(&ov->i2c_lock);
+        mutex_unlock(&ov->i2c_lock);
         return rc;
 }
 
@@ -906,7 +906,7 @@ i2c_r_slave(struct usb_ov511 *ov,
 {
         int rc;
 
-        down(&ov->i2c_lock);
+        mutex_lock(&ov->i2c_lock);
 
         /* Set new slave IDs */
         rc = i2c_set_slave_internal(ov, slave);
@@ -923,7 +923,7 @@ out:
         if (i2c_set_slave_internal(ov, ov->primary_i2c_slave) < 0)
                 err("Couldn't restore primary I2C slave");
 
-        up(&ov->i2c_lock);
+        mutex_unlock(&ov->i2c_lock);
         return rc;
 }
 
@@ -933,7 +933,7 @@ ov51x_set_slave_ids(struct usb_ov511 *ov, unsigned char sid)
 {
         int rc;
 
-        down(&ov->i2c_lock);
+        mutex_lock(&ov->i2c_lock);
 
         rc = i2c_set_slave_internal(ov, sid);
         if (rc < 0)
@@ -942,7 +942,7 @@ ov51x_set_slave_ids(struct usb_ov511 *ov, unsigned char sid)
         // FIXME: Is this actually necessary?
         rc = ov51x_reset(ov, OV511_RESET_NOREGS);
 out:
-        up(&ov->i2c_lock);
+        mutex_unlock(&ov->i2c_lock);
         return rc;
 }
 
@@ -3832,7 +3832,7 @@ ov51x_alloc(struct usb_ov511 *ov)
         const int raw_bufsize = OV511_NUMFRAMES * MAX_RAW_DATA_SIZE(w, h);
 
         PDEBUG(4, "entered");
-        down(&ov->buf_lock);
+        mutex_lock(&ov->buf_lock);
 
         if (ov->buf_state == BUF_ALLOCATED)
                 goto out;
@@ -3879,12 +3879,12 @@ ov51x_alloc(struct usb_ov511 *ov)
 
         ov->buf_state = BUF_ALLOCATED;
 out:
-        up(&ov->buf_lock);
+        mutex_unlock(&ov->buf_lock);
         PDEBUG(4, "leaving");
         return 0;
 error:
         ov51x_do_dealloc(ov);
-        up(&ov->buf_lock);
+        mutex_unlock(&ov->buf_lock);
         PDEBUG(4, "errored");
         return -ENOMEM;
 }
@@ -3893,9 +3893,9 @@ static void
 ov51x_dealloc(struct usb_ov511 *ov)
 {
         PDEBUG(4, "entered");
-        down(&ov->buf_lock);
+        mutex_lock(&ov->buf_lock);
         ov51x_do_dealloc(ov);
-        up(&ov->buf_lock);
+        mutex_unlock(&ov->buf_lock);
         PDEBUG(4, "leaving");
 }
 
@@ -3914,7 +3914,7 @@ ov51x_v4l1_open(struct inode *inode, struct file *file)
 
         PDEBUG(4, "opening");
 
-        down(&ov->lock);
+        mutex_lock(&ov->lock);
 
         err = -EBUSY;
         if (ov->user)
@@ -3958,7 +3958,7 @@ ov51x_v4l1_open(struct inode *inode, struct file *file)
                 ov51x_led_control(ov, 1);
 
 out:
-        up(&ov->lock);
+        mutex_unlock(&ov->lock);
         return err;
 }
 
@@ -3970,7 +3970,7 @@ ov51x_v4l1_close(struct inode *inode, struct file *file)
 
         PDEBUG(4, "ov511_close");
 
-        down(&ov->lock);
+        mutex_lock(&ov->lock);
 
         ov->user--;
         ov51x_stop_isoc(ov);
@@ -3981,15 +3981,15 @@ ov51x_v4l1_close(struct inode *inode, struct file *file)
         if (ov->dev)
                 ov51x_dealloc(ov);
 
-        up(&ov->lock);
+        mutex_unlock(&ov->lock);
 
         /* Device unplugged while open. Only a minimum of unregistration is done
          * here; the disconnect callback already did the rest. */
         if (!ov->dev) {
-                down(&ov->cbuf_lock);
+                mutex_lock(&ov->cbuf_lock);
                 kfree(ov->cbuf);
                 ov->cbuf = NULL;
-                up(&ov->cbuf_lock);
+                mutex_unlock(&ov->cbuf_lock);
 
                 ov51x_dealloc(ov);
                 kfree(ov);
@@ -4449,12 +4449,12 @@ ov51x_v4l1_ioctl(struct inode *inode, struct file *file,
         struct usb_ov511 *ov = video_get_drvdata(vdev);
         int rc;
 
-        if (down_interruptible(&ov->lock))
+        if (mutex_lock_interruptible(&ov->lock))
                 return -EINTR;
 
         rc = video_usercopy(inode, file, cmd, arg, ov51x_v4l1_ioctl_internal);
 
-        up(&ov->lock);
+        mutex_unlock(&ov->lock);
         return rc;
 }
 
@@ -4468,7 +4468,7 @@ ov51x_v4l1_read(struct file *file, char __user *buf, size_t cnt, loff_t *ppos)
         int i, rc = 0, frmx = -1;
         struct ov511_frame *frame;
 
-        if (down_interruptible(&ov->lock))
+        if (mutex_lock_interruptible(&ov->lock))
                 return -EINTR;
 
         PDEBUG(4, "%ld bytes, noblock=%d", count, noblock);
@@ -4604,11 +4604,11 @@ restart:
 
         PDEBUG(4, "read finished, returning %ld (sweet)", count);
 
-        up(&ov->lock);
+        mutex_unlock(&ov->lock);
         return count;
 
 error:
-        up(&ov->lock);
+        mutex_unlock(&ov->lock);
         return rc;
 }
 
@@ -4631,14 +4631,14 @@ ov51x_v4l1_mmap(struct file *file, struct vm_area_struct *vma)
                       + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1))))
                 return -EINVAL;
 
-        if (down_interruptible(&ov->lock))
+        if (mutex_lock_interruptible(&ov->lock))
                 return -EINTR;
 
         pos = (unsigned long)ov->fbuf;
         while (size > 0) {
                 page = vmalloc_to_pfn((void *)pos);
                 if (remap_pfn_range(vma, start, page, PAGE_SIZE, PAGE_SHARED)) {
-                        up(&ov->lock);
+                        mutex_unlock(&ov->lock);
                         return -EAGAIN;
                 }
                 start += PAGE_SIZE;
@@ -4649,7 +4649,7 @@ ov51x_v4l1_mmap(struct file *file, struct vm_area_struct *vma)
                         size = 0;
         }
 
-        up(&ov->lock);
+        mutex_unlock(&ov->lock);
         return 0;
 }
 
@@ -5639,7 +5639,7 @@ static CLASS_DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
 static ssize_t show_exposure(struct class_device *cd, char *buf)
 {
         struct usb_ov511 *ov = cd_to_ov(cd);
-        unsigned char exp;
+        unsigned char exp = 0;
 
         if (!ov->dev)
                 return -ENODEV;
@@ -5686,13 +5686,11 @@ ov51x_probe(struct usb_interface *intf, const struct usb_device_id *id)
         if (idesc->bInterfaceSubClass != 0x00)
                 return -ENODEV;
 
-        if ((ov = kmalloc(sizeof(*ov), GFP_KERNEL)) == NULL) {
+        if ((ov = kzalloc(sizeof(*ov), GFP_KERNEL)) == NULL) {
                 err("couldn't kmalloc ov struct");
                 goto error_out;
         }
 
-        memset(ov, 0, sizeof(*ov));
-
         ov->dev = dev;
         ov->iface = idesc->bInterfaceNumber;
         ov->led_policy = led;
@@ -5738,11 +5736,10 @@ ov51x_probe(struct usb_interface *intf, const struct usb_device_id *id)
 
         init_waitqueue_head(&ov->wq);
 
-        init_MUTEX(&ov->lock);  /* to 1 == available */
-        init_MUTEX(&ov->buf_lock);
-        init_MUTEX(&ov->param_lock);
-        init_MUTEX(&ov->i2c_lock);
-        init_MUTEX(&ov->cbuf_lock);
+        mutex_init(&ov->lock);  /* to 1 == available */
+        mutex_init(&ov->buf_lock);
+        mutex_init(&ov->i2c_lock);
+        mutex_init(&ov->cbuf_lock);
 
         ov->buf_state = BUF_NOT_ALLOCATED;
 
@@ -5833,10 +5830,10 @@ error:
         }
 
         if (ov->cbuf) {
-                down(&ov->cbuf_lock);
+                mutex_lock(&ov->cbuf_lock);
                 kfree(ov->cbuf);
                 ov->cbuf = NULL;
-                up(&ov->cbuf_lock);
+                mutex_unlock(&ov->cbuf_lock);
         }
 
         kfree(ov);
@@ -5881,10 +5878,10 @@ ov51x_disconnect(struct usb_interface *intf)
 
         /* Free the memory */
         if (ov && !ov->user) {
-                down(&ov->cbuf_lock);
+                mutex_lock(&ov->cbuf_lock);
                 kfree(ov->cbuf);
                 ov->cbuf = NULL;
-                up(&ov->cbuf_lock);
+                mutex_unlock(&ov->cbuf_lock);
 
                 ov51x_dealloc(ov);
                 kfree(ov);
diff --git a/drivers/usb/media/ov511.h b/drivers/usb/media/ov511.h
index 086509a137c6..bce9b3633889 100644
--- a/drivers/usb/media/ov511.h
+++ b/drivers/usb/media/ov511.h
@@ -5,6 +5,7 @@
 #include <linux/videodev.h>
 #include <linux/smp_lock.h>
 #include <linux/usb.h>
+#include <linux/mutex.h>
 
 #define OV511_DEBUG     /* Turn on debug messages */
 
@@ -435,7 +436,7 @@ struct usb_ov511 {
 
         int led_policy;         /* LED: off|on|auto; OV511+ only */
 
-        struct semaphore lock;  /* Serializes user-accessible operations */
+        struct mutex lock;      /* Serializes user-accessible operations */
         int user;               /* user count for exclusive use */
 
         int streaming;          /* Are we streaming Isochronous? */
@@ -473,11 +474,9 @@ struct usb_ov511 {
         int packet_size;        /* Frame size per isoc desc */
         int packet_numbering;   /* Is ISO frame numbering enabled? */
 
-        struct semaphore param_lock;    /* params lock for this camera */
-
         /* Framebuffer/sbuf management */
         int buf_state;
-        struct semaphore buf_lock;
+        struct mutex buf_lock;
 
         struct ov51x_decomp_ops *decomp_ops;
 
@@ -494,12 +493,12 @@ struct usb_ov511 {
         int pal;                /* Device is designed for PAL resolution */
 
         /* I2C interface */
-        struct semaphore i2c_lock;        /* Protect I2C controller regs */
+        struct mutex i2c_lock;    /* Protect I2C controller regs */
         unsigned char primary_i2c_slave;  /* I2C write id of sensor */
 
         /* Control transaction stuff */
         unsigned char *cbuf;            /* Buffer for payload */
-        struct semaphore cbuf_lock;
+        struct mutex cbuf_lock;
 };
 
 /* Used to represent a list of values and their respective symbolic names */
diff --git a/drivers/usb/media/pwc/pwc-ctrl.c b/drivers/usb/media/pwc/pwc-ctrl.c
index 3ebb6e9cdf92..0398b812e0ce 100644
--- a/drivers/usb/media/pwc/pwc-ctrl.c
+++ b/drivers/usb/media/pwc/pwc-ctrl.c
@@ -41,7 +41,6 @@
 #include <asm/uaccess.h> 
 #endif
 #include <asm/errno.h>
-#include <linux/version.h>
  
 #include "pwc.h"
 #include "pwc-ioctl.h"
diff --git a/drivers/usb/media/pwc/pwc-if.c b/drivers/usb/media/pwc/pwc-if.c
index 4f9b0dc6fd7b..90eb26042817 100644
--- a/drivers/usb/media/pwc/pwc-if.c
+++ b/drivers/usb/media/pwc/pwc-if.c
@@ -62,7 +62,6 @@
 #include <linux/poll.h>
 #include <linux/slab.h>
 #include <linux/vmalloc.h>
-#include <linux/version.h>
 #include <asm/io.h>
 
 #include "pwc.h"
@@ -827,13 +826,10 @@ static int pwc_isoc_init(struct pwc_device *pdev)
         /* Get the current alternate interface, adjust packet size */
         if (!udev->actconfig)
                 return -EFAULT;
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,5)
-        idesc = &udev->actconfig->interface[0]->altsetting[pdev->valternate];
-#else
+
         intf = usb_ifnum_to_if(udev, 0);
         if (intf)
                 idesc = usb_altnum_to_altsetting(intf, pdev->valternate);
-#endif
                 
         if (!idesc)
                 return -EFAULT;
@@ -1871,12 +1867,11 @@ static int usb_pwc_probe(struct usb_interface *intf, const struct usb_device_id
                 Info("Warning: more than 1 configuration available.\n");
 
         /* Allocate structure, initialize pointers, mutexes, etc. and link it to the usb_device */
-        pdev = kmalloc(sizeof(struct pwc_device), GFP_KERNEL);
+        pdev = kzalloc(sizeof(struct pwc_device), GFP_KERNEL);
         if (pdev == NULL) {
                 Err("Oops, could not allocate memory for pwc_device.\n");
                 return -ENOMEM;
         }
-        memset(pdev, 0, sizeof(struct pwc_device));
         pdev->type = type_id;
         pdev->vsize = default_size;
         pdev->vframes = default_fps;
diff --git a/drivers/usb/media/se401.c b/drivers/usb/media/se401.c
index 2ba562285fda..f03ea7f89596 100644
--- a/drivers/usb/media/se401.c
+++ b/drivers/usb/media/se401.c
@@ -1157,21 +1157,21 @@ static int se401_mmap(struct file *file, struct vm_area_struct *vma)
         unsigned long size  = vma->vm_end-vma->vm_start;
         unsigned long page, pos;
 
-        down(&se401->lock);
+        mutex_lock(&se401->lock);
 
         if (se401->dev == NULL) {
-                up(&se401->lock);
+                mutex_unlock(&se401->lock);
                 return -EIO;
         }
         if (size > (((SE401_NUMFRAMES * se401->maxframesize) + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1))) {
-                up(&se401->lock);
+                mutex_unlock(&se401->lock);
                 return -EINVAL;
         }
         pos = (unsigned long)se401->fbuf;
         while (size > 0) {
                 page = vmalloc_to_pfn((void *)pos);
                 if (remap_pfn_range(vma, start, page, PAGE_SIZE, PAGE_SHARED)) {
-                        up(&se401->lock);
+                        mutex_unlock(&se401->lock);
                         return -EAGAIN;
                 }
                 start += PAGE_SIZE;
@@ -1181,7 +1181,7 @@ static int se401_mmap(struct file *file, struct vm_area_struct *vma)
                 else
                         size = 0;
         }
-        up(&se401->lock);
+        mutex_unlock(&se401->lock);
 
         return 0;
 }
@@ -1345,13 +1345,11 @@ static int se401_probe(struct usb_interface *intf,
         /* We found one */
         info("SE401 camera found: %s", camera_name);
 
-        if ((se401 = kmalloc(sizeof(*se401), GFP_KERNEL)) == NULL) {
+        if ((se401 = kzalloc(sizeof(*se401), GFP_KERNEL)) == NULL) {
                 err("couldn't kmalloc se401 struct");
                 return -ENOMEM;
         }
 
-        memset(se401, 0, sizeof(*se401));
-
         se401->dev = dev;
         se401->iface = interface->bInterfaceNumber;
         se401->camera_name = camera_name;
@@ -1366,7 +1364,7 @@ static int se401_probe(struct usb_interface *intf,
         memcpy(&se401->vdev, &se401_template, sizeof(se401_template));
         memcpy(se401->vdev.name, se401->camera_name, strlen(se401->camera_name));
         init_waitqueue_head(&se401->wq);
-        init_MUTEX(&se401->lock);
+        mutex_init(&se401->lock);
         wmb();
 
         if (video_register_device(&se401->vdev, VFL_TYPE_GRABBER, video_nr) == -1) {
diff --git a/drivers/usb/media/se401.h b/drivers/usb/media/se401.h
index 2e5846f1eb20..e88a40d4c86a 100644
--- a/drivers/usb/media/se401.h
+++ b/drivers/usb/media/se401.h
@@ -5,6 +5,7 @@
 #include <asm/uaccess.h>
 #include <linux/videodev.h>
 #include <linux/smp_lock.h>
+#include <linux/mutex.h>
 
 #define se401_DEBUG     /* Turn on debug messages */
 
@@ -189,7 +190,7 @@ struct usb_se401 {
         int maxframesize;
         int cframesize;         /* current framesize */
 
-        struct semaphore lock;
+        struct mutex lock;
         int user;               /* user count for exclusive use */
         int removed;            /* device disconnected */
 
diff --git a/drivers/usb/media/sn9c102.h b/drivers/usb/media/sn9c102.h
index 17d60c1eea7e..1d70a62b9f23 100644
--- a/drivers/usb/media/sn9c102.h
+++ b/drivers/usb/media/sn9c102.h
@@ -33,7 +33,9 @@
 #include <linux/types.h>
 #include <linux/param.h>
 #include <linux/rwsem.h>
-#include <asm/semaphore.h>
+#include <linux/mutex.h>
+#include <linux/string.h>
+#include <linux/stddef.h>
 
 #include "sn9c102_sensor.h"
 
@@ -50,6 +52,7 @@
 #define SN9C102_ALTERNATE_SETTING 8
 #define SN9C102_URB_TIMEOUT       msecs_to_jiffies(2 * SN9C102_ISO_PACKETS)
 #define SN9C102_CTRL_TIMEOUT      300
+#define SN9C102_FRAME_TIMEOUT     2
 
 /*****************************************************************************/
 
@@ -107,16 +110,17 @@ struct sn9c102_sysfs_attr {
 
 struct sn9c102_module_param {
         u8 force_munmap;
+        u16 frame_timeout;
 };
 
-static DECLARE_MUTEX(sn9c102_sysfs_lock);
+static DEFINE_MUTEX(sn9c102_sysfs_lock);
 static DECLARE_RWSEM(sn9c102_disconnect);
 
 struct sn9c102_device {
         struct video_device* v4ldev;
 
         enum sn9c102_bridge bridge;
-        struct sn9c102_sensor* sensor;
+        struct sn9c102_sensor sensor;
 
         struct usb_device* usbdev;
         struct urb* urb[SN9C102_URBS];
@@ -141,19 +145,28 @@ struct sn9c102_device {
         enum sn9c102_dev_state state;
         u8 users;
 
-        struct semaphore dev_sem, fileop_sem;
+        struct mutex dev_mutex, fileop_mutex;
         spinlock_t queue_lock;
         wait_queue_head_t open, wait_frame, wait_stream;
 };
 
 /*****************************************************************************/
 
+struct sn9c102_device*
+sn9c102_match_id(struct sn9c102_device* cam, const struct usb_device_id *id)
+{
+        if (usb_match_id(usb_ifnum_to_if(cam->usbdev, 0), id))
+                return cam;
+
+        return NULL;
+}
+
+
 void
 sn9c102_attach_sensor(struct sn9c102_device* cam,
                       struct sn9c102_sensor* sensor)
 {
-        cam->sensor = sensor;
-        cam->sensor->usbdev = cam->usbdev;
+        memcpy(&cam->sensor, sensor, sizeof(struct sn9c102_sensor));
 }
 
 /*****************************************************************************/
@@ -196,7 +209,8 @@ do {                                                                          \
 
 #undef PDBG
 #define PDBG(fmt, args...)                                                    \
-dev_info(&cam->dev, "[%s:%d] " fmt "\n", __FUNCTION__, __LINE__ , ## args)
+dev_info(&cam->usbdev->dev, "[%s:%d] " fmt "\n",                              \
+         __FUNCTION__, __LINE__ , ## args)
 
 #undef PDBGG
 #define PDBGG(fmt, args...) do {;} while(0) /* placeholder */
diff --git a/drivers/usb/media/sn9c102_core.c b/drivers/usb/media/sn9c102_core.c
index c81397e4714b..4c6cc6395723 100644
--- a/drivers/usb/media/sn9c102_core.c
+++ b/drivers/usb/media/sn9c102_core.c
@@ -25,11 +25,9 @@
 #include <linux/moduleparam.h>
 #include <linux/errno.h>
 #include <linux/slab.h>
-#include <linux/string.h>
 #include <linux/device.h>
 #include <linux/fs.h>
 #include <linux/delay.h>
-#include <linux/stddef.h>
 #include <linux/compiler.h>
 #include <linux/ioctl.h>
 #include <linux/poll.h>
@@ -49,8 +47,8 @@
 #define SN9C102_MODULE_AUTHOR   "(C) 2004-2006 Luca Risolia"
 #define SN9C102_AUTHOR_EMAIL    "<luca.risolia@studio.unibo.it>"
 #define SN9C102_MODULE_LICENSE  "GPL"
-#define SN9C102_MODULE_VERSION  "1:1.26"
-#define SN9C102_MODULE_VERSION_CODE  KERNEL_VERSION(1, 0, 26)
+#define SN9C102_MODULE_VERSION  "1:1.27"
+#define SN9C102_MODULE_VERSION_CODE  KERNEL_VERSION(1, 0, 27)
 
 /*****************************************************************************/
 
@@ -89,6 +87,15 @@ MODULE_PARM_DESC(force_munmap,
                  "\nDefault value is "__MODULE_STRING(SN9C102_FORCE_MUNMAP)"."
                  "\n");
 
+static unsigned int frame_timeout[] = {[0 ... SN9C102_MAX_DEVICES-1] =
+                                       SN9C102_FRAME_TIMEOUT};
+module_param_array(frame_timeout, uint, NULL, 0644);
+MODULE_PARM_DESC(frame_timeout,
+                 "\n<n[,...]> Timeout for a video frame in seconds."
+                 "\nThis parameter is specific for each detected camera."
+                 "\nDefault value is "__MODULE_STRING(SN9C102_FRAME_TIMEOUT)"."
+                 "\n");
+
 #ifdef SN9C102_DEBUG
 static unsigned short debug = SN9C102_DEBUG_LEVEL;
 module_param(debug, ushort, 0644);
@@ -128,8 +135,8 @@ static u32
 sn9c102_request_buffers(struct sn9c102_device* cam, u32 count, 
                         enum sn9c102_io_method io)
 {
-        struct v4l2_pix_format* p = &(cam->sensor->pix_format);
-        struct v4l2_rect* r = &(cam->sensor->cropcap.bounds);
+        struct v4l2_pix_format* p = &(cam->sensor.pix_format);
+        struct v4l2_rect* r = &(cam->sensor.cropcap.bounds);
         const size_t imagesize = cam->module_param.force_munmap ||
                                  io == IO_READ ?
                                  (p->width * p->height * p->priv) / 8 :
@@ -449,19 +456,13 @@ sn9c102_i2c_try_write(struct sn9c102_device* cam,
 
 int sn9c102_i2c_read(struct sn9c102_device* cam, u8 address)
 {
-        if (!cam->sensor)
-                return -1;
-
-        return sn9c102_i2c_try_read(cam, cam->sensor, address);
+        return sn9c102_i2c_try_read(cam, &cam->sensor, address);
 }
 
 
 int sn9c102_i2c_write(struct sn9c102_device* cam, u8 address, u8 value)
 {
-        if (!cam->sensor)
-                return -1;
-
-        return sn9c102_i2c_try_write(cam, cam->sensor, address, value);
+        return sn9c102_i2c_try_write(cam, &cam->sensor, address, value);
 }
 
 /*****************************************************************************/
@@ -505,7 +506,7 @@ sn9c102_find_eof_header(struct sn9c102_device* cam, void* mem, size_t len)
         size_t eoflen = sizeof(sn9c102_eof_header_t), i;
         unsigned j, n = sizeof(sn9c102_eof_header) / eoflen;
 
-        if (cam->sensor->pix_format.pixelformat == V4L2_PIX_FMT_SN9C10X)
+        if (cam->sensor.pix_format.pixelformat == V4L2_PIX_FMT_SN9C10X)
                 return NULL; /* EOF header does not exist in compressed data */
 
         for (i = 0; (len >= eoflen) && (i <= len - eoflen); i++)
@@ -535,7 +536,7 @@ static void sn9c102_urb_complete(struct urb *urb, struct pt_regs* regs)
                 if ((*f))
                         (*f)->state = F_QUEUED;
                 DBG(3, "Stream interrupted");
-                wake_up_interruptible(&cam->wait_stream);
+                wake_up(&cam->wait_stream);
         }
 
         if (cam->state & DEV_DISCONNECTED)
@@ -553,9 +554,9 @@ static void sn9c102_urb_complete(struct urb *urb, struct pt_regs* regs)
                 (*f) = list_entry(cam->inqueue.next, struct sn9c102_frame_t,
                                   frame);
 
-        imagesize = (cam->sensor->pix_format.width *
-                     cam->sensor->pix_format.height *
-                     cam->sensor->pix_format.priv) / 8;
+        imagesize = (cam->sensor.pix_format.width *
+                     cam->sensor.pix_format.height *
+                     cam->sensor.pix_format.priv) / 8;
 
         soflen = (cam->bridge) == BRIDGE_SN9C103 ?
                                   sizeof(sn9c103_sof_header_t) :
@@ -579,7 +580,7 @@ static void sn9c102_urb_complete(struct urb *urb, struct pt_regs* regs)
 
 redo:
                 sof = sn9c102_find_sof_header(cam, pos, len);
-                if (!sof) {
+                if (likely(!sof)) {
                         eof = sn9c102_find_eof_header(cam, pos, len);
                         if ((*f)->state == F_GRABBING) {
 end_of_frame:
@@ -589,8 +590,9 @@ end_of_frame:
                                         img = (eof > pos) ? eof - pos - 1 : 0;
 
                                 if ((*f)->buf.bytesused+img > imagesize) {
-                                        u32 b = (*f)->buf.bytesused + img -
-                                                imagesize;
+                                        u32 b;
+                                        b = (*f)->buf.bytesused + img -
+                                            imagesize;
                                         img = imagesize - (*f)->buf.bytesused;
                                         DBG(3, "Expected EOF not found: "
                                                "video frame cut");
@@ -608,9 +610,10 @@ end_of_frame:
                                 (*f)->buf.bytesused += img;
 
                                 if ((*f)->buf.bytesused == imagesize ||
-                                    (cam->sensor->pix_format.pixelformat ==
+                                    (cam->sensor.pix_format.pixelformat ==
                                                 V4L2_PIX_FMT_SN9C10X && eof)) {
-                                        u32 b = (*f)->buf.bytesused;
+                                        u32 b;
+                                        b = (*f)->buf.bytesused;
                                         (*f)->state = F_DONE;
                                         (*f)->buf.sequence= ++cam->frame_count;
                                         spin_lock(&cam->queue_lock);
@@ -667,7 +670,7 @@ start_of_frame:
                         if (eof && eof < sof)
                                 goto end_of_frame; /* (1) */
                         else {
-                                if (cam->sensor->pix_format.pixelformat ==
+                                if (cam->sensor.pix_format.pixelformat ==
                                     V4L2_PIX_FMT_SN9C10X) {
                                         eof = sof - soflen;
                                         goto end_of_frame;
@@ -808,20 +811,21 @@ static int sn9c102_stop_transfer(struct sn9c102_device* cam)
 
 static int sn9c102_stream_interrupt(struct sn9c102_device* cam)
 {
-        int err = 0;
+        long timeout;
 
         cam->stream = STREAM_INTERRUPT;
-        err = wait_event_timeout(cam->wait_stream,
-                                 (cam->stream == STREAM_OFF) ||
-                                 (cam->state & DEV_DISCONNECTED),
-                                 SN9C102_URB_TIMEOUT);
+        timeout = wait_event_timeout(cam->wait_stream,
+                                     (cam->stream == STREAM_OFF) ||
+                                     (cam->state & DEV_DISCONNECTED),
+                                     SN9C102_URB_TIMEOUT);
         if (cam->state & DEV_DISCONNECTED)
                 return -ENODEV;
-        else if (err) {
+        else if (cam->stream != STREAM_OFF) {
                 cam->state |= DEV_MISCONFIGURED;
-                DBG(1, "The camera is misconfigured. To use it, close and "
-                       "open /dev/video%d again.", cam->v4ldev->minor);
-                return err;
+                DBG(1, "URB timeout reached. The camera is misconfigured. "
+                       "To use it, close and open /dev/video%d again.",
+                    cam->v4ldev->minor);
+                return -EIO;
         }
 
         return 0;
@@ -866,18 +870,18 @@ static ssize_t sn9c102_show_reg(struct class_device* cd, char* buf)
         struct sn9c102_device* cam;
         ssize_t count;
 
-        if (down_interruptible(&sn9c102_sysfs_lock))
+        if (mutex_lock_interruptible(&sn9c102_sysfs_lock))
                 return -ERESTARTSYS;
 
         cam = video_get_drvdata(to_video_device(cd));
         if (!cam) {
-                up(&sn9c102_sysfs_lock);
+                mutex_unlock(&sn9c102_sysfs_lock);
                 return -ENODEV;
         }
 
         count = sprintf(buf, "%u\n", cam->sysfs.reg);
 
-        up(&sn9c102_sysfs_lock);
+        mutex_unlock(&sn9c102_sysfs_lock);
 
         return count;
 } 
@@ -890,18 +894,18 @@ sn9c102_store_reg(struct class_device* cd, const char* buf, size_t len)
         u8 index;
         ssize_t count;
 
-        if (down_interruptible(&sn9c102_sysfs_lock))
+        if (mutex_lock_interruptible(&sn9c102_sysfs_lock))
                 return -ERESTARTSYS;
 
         cam = video_get_drvdata(to_video_device(cd));
         if (!cam) {
-                up(&sn9c102_sysfs_lock);
+                mutex_unlock(&sn9c102_sysfs_lock);
                 return -ENODEV;
         }
 
         index = sn9c102_strtou8(buf, len, &count);
         if (index > 0x1f || !count) {
-                up(&sn9c102_sysfs_lock);
+                mutex_unlock(&sn9c102_sysfs_lock);
                 return -EINVAL;
         }
 
@@ -910,7 +914,7 @@ sn9c102_store_reg(struct class_device* cd, const char* buf, size_t len)
         DBG(2, "Moved SN9C10X register index to 0x%02X", cam->sysfs.reg);
         DBG(3, "Written bytes: %zd", count);
 
-        up(&sn9c102_sysfs_lock);
+        mutex_unlock(&sn9c102_sysfs_lock);
 
         return count;
 }
@@ -922,17 +926,17 @@ static ssize_t sn9c102_show_val(struct class_device* cd, char* buf)
         ssize_t count;
         int val;
 
-        if (down_interruptible(&sn9c102_sysfs_lock))
+        if (mutex_lock_interruptible(&sn9c102_sysfs_lock))
                 return -ERESTARTSYS;
 
         cam = video_get_drvdata(to_video_device(cd));
         if (!cam) {
-                up(&sn9c102_sysfs_lock);
+                mutex_unlock(&sn9c102_sysfs_lock);
                 return -ENODEV;
         }
 
         if ((val = sn9c102_read_reg(cam, cam->sysfs.reg)) < 0) {
-                up(&sn9c102_sysfs_lock);
+                mutex_unlock(&sn9c102_sysfs_lock);
                 return -EIO;
         }
 
@@ -940,7 +944,7 @@ static ssize_t sn9c102_show_val(struct class_device* cd, char* buf)
 
         DBG(3, "Read bytes: %zd", count);
 
-        up(&sn9c102_sysfs_lock);
+        mutex_unlock(&sn9c102_sysfs_lock);
 
         return count;
 } 
@@ -954,24 +958,24 @@ sn9c102_store_val(struct class_device* cd, const char* buf, size_t len)
         ssize_t count;
         int err;
 
-        if (down_interruptible(&sn9c102_sysfs_lock))
+        if (mutex_lock_interruptible(&sn9c102_sysfs_lock))
                 return -ERESTARTSYS;
 
         cam = video_get_drvdata(to_video_device(cd));
         if (!cam) {
-                up(&sn9c102_sysfs_lock);
+                mutex_unlock(&sn9c102_sysfs_lock);
                 return -ENODEV;
         }
 
         value = sn9c102_strtou8(buf, len, &count);
         if (!count) {
-                up(&sn9c102_sysfs_lock);
+                mutex_unlock(&sn9c102_sysfs_lock);
                 return -EINVAL;
         }
 
         err = sn9c102_write_reg(cam, value, cam->sysfs.reg);
         if (err) {
-                up(&sn9c102_sysfs_lock);
+                mutex_unlock(&sn9c102_sysfs_lock);
                 return -EIO;
         }
 
@@ -979,7 +983,7 @@ sn9c102_store_val(struct class_device* cd, const char* buf, size_t len)
             cam->sysfs.reg, value);
         DBG(3, "Written bytes: %zd", count);
 
-        up(&sn9c102_sysfs_lock);
+        mutex_unlock(&sn9c102_sysfs_lock);
 
         return count;
 }
@@ -990,12 +994,12 @@ static ssize_t sn9c102_show_i2c_reg(struct class_device* cd, char* buf)
         struct sn9c102_device* cam;
         ssize_t count;
 
-        if (down_interruptible(&sn9c102_sysfs_lock))
+        if (mutex_lock_interruptible(&sn9c102_sysfs_lock))
                 return -ERESTARTSYS;
 
         cam = video_get_drvdata(to_video_device(cd));
         if (!cam) {
-                up(&sn9c102_sysfs_lock);
+                mutex_unlock(&sn9c102_sysfs_lock);
                 return -ENODEV;
         }
 
@@ -1003,7 +1007,7 @@ static ssize_t sn9c102_show_i2c_reg(struct class_device* cd, char* buf)
 
         DBG(3, "Read bytes: %zd", count);
 
-        up(&sn9c102_sysfs_lock);
+        mutex_unlock(&sn9c102_sysfs_lock);
 
         return count;
 }
@@ -1016,18 +1020,18 @@ sn9c102_store_i2c_reg(struct class_device* cd, const char* buf, size_t len)
         u8 index;
         ssize_t count;
 
-        if (down_interruptible(&sn9c102_sysfs_lock))
+        if (mutex_lock_interruptible(&sn9c102_sysfs_lock))
                 return -ERESTARTSYS;
 
         cam = video_get_drvdata(to_video_device(cd));
         if (!cam) {
-                up(&sn9c102_sysfs_lock);
+                mutex_unlock(&sn9c102_sysfs_lock);
                 return -ENODEV;
         }
 
         index = sn9c102_strtou8(buf, len, &count);
         if (!count) {
-                up(&sn9c102_sysfs_lock);
+                mutex_unlock(&sn9c102_sysfs_lock);
                 return -EINVAL;
         }
 
@@ -1036,7 +1040,7 @@ sn9c102_store_i2c_reg(struct class_device* cd, const char* buf, size_t len)
         DBG(2, "Moved sensor register index to 0x%02X", cam->sysfs.i2c_reg);
         DBG(3, "Written bytes: %zd", count);
 
-        up(&sn9c102_sysfs_lock);
+        mutex_unlock(&sn9c102_sysfs_lock);
 
         return count;
 }
@@ -1048,22 +1052,22 @@ static ssize_t sn9c102_show_i2c_val(struct class_device* cd, char* buf)
         ssize_t count;
         int val;
 
-        if (down_interruptible(&sn9c102_sysfs_lock))
+        if (mutex_lock_interruptible(&sn9c102_sysfs_lock))
                 return -ERESTARTSYS;
 
         cam = video_get_drvdata(to_video_device(cd));
         if (!cam) {
-                up(&sn9c102_sysfs_lock);
+                mutex_unlock(&sn9c102_sysfs_lock);
                 return -ENODEV;
         }
 
-        if (!(cam->sensor->sysfs_ops & SN9C102_I2C_READ)) {
-                up(&sn9c102_sysfs_lock);
+        if (!(cam->sensor.sysfs_ops & SN9C102_I2C_READ)) {
+                mutex_unlock(&sn9c102_sysfs_lock);
                 return -ENOSYS;
         }
 
         if ((val = sn9c102_i2c_read(cam, cam->sysfs.i2c_reg)) < 0) {
-                up(&sn9c102_sysfs_lock);
+                mutex_unlock(&sn9c102_sysfs_lock);
                 return -EIO;
         }
 
@@ -1071,7 +1075,7 @@ static ssize_t sn9c102_show_i2c_val(struct class_device* cd, char* buf)
 
         DBG(3, "Read bytes: %zd", count);
 
-        up(&sn9c102_sysfs_lock);
+        mutex_unlock(&sn9c102_sysfs_lock);
 
         return count;
 } 
@@ -1085,29 +1089,29 @@ sn9c102_store_i2c_val(struct class_device* cd, const char* buf, size_t len)
         ssize_t count;
         int err;
 
-        if (down_interruptible(&sn9c102_sysfs_lock))
+        if (mutex_lock_interruptible(&sn9c102_sysfs_lock))
                 return -ERESTARTSYS;
 
         cam = video_get_drvdata(to_video_device(cd));
         if (!cam) {
-                up(&sn9c102_sysfs_lock);
+                mutex_unlock(&sn9c102_sysfs_lock);
                 return -ENODEV;
         }
 
-        if (!(cam->sensor->sysfs_ops & SN9C102_I2C_WRITE)) {
-                up(&sn9c102_sysfs_lock);
+        if (!(cam->sensor.sysfs_ops & SN9C102_I2C_WRITE)) {
+                mutex_unlock(&sn9c102_sysfs_lock);
                 return -ENOSYS;
         }
 
         value = sn9c102_strtou8(buf, len, &count);
         if (!count) {
-                up(&sn9c102_sysfs_lock);
+                mutex_unlock(&sn9c102_sysfs_lock);
                 return -EINVAL;
         }
 
         err = sn9c102_i2c_write(cam, cam->sysfs.i2c_reg, value);
         if (err) {
-                up(&sn9c102_sysfs_lock);
+                mutex_unlock(&sn9c102_sysfs_lock);
                 return -EIO;
         }
 
@@ -1115,7 +1119,7 @@ sn9c102_store_i2c_val(struct class_device* cd, const char* buf, size_t len)
             cam->sysfs.i2c_reg, value);
         DBG(3, "Written bytes: %zd", count);
 
-        up(&sn9c102_sysfs_lock);
+        mutex_unlock(&sn9c102_sysfs_lock);
 
         return count;
 }
@@ -1130,18 +1134,18 @@ sn9c102_store_green(struct class_device* cd, const char* buf, size_t len)
         u8 value;
         ssize_t count;
 
-        if (down_interruptible(&sn9c102_sysfs_lock))
+        if (mutex_lock_interruptible(&sn9c102_sysfs_lock))
                 return -ERESTARTSYS;
 
         cam = video_get_drvdata(to_video_device(cd));
         if (!cam) {
-                up(&sn9c102_sysfs_lock);
+                mutex_unlock(&sn9c102_sysfs_lock);
                 return -ENODEV;
         }
 
         bridge = cam->bridge;
 
-        up(&sn9c102_sysfs_lock);
+        mutex_unlock(&sn9c102_sysfs_lock);
 
         value = sn9c102_strtou8(buf, len, &count);
         if (!count)
@@ -1249,7 +1253,7 @@ static void sn9c102_create_sysfs(struct sn9c102_device* cam)
                 video_device_create_file(v4ldev, &class_device_attr_blue);
                 video_device_create_file(v4ldev, &class_device_attr_red);
         }
-        if (cam->sensor && cam->sensor->sysfs_ops) {
+        if (cam->sensor.sysfs_ops) {
                 video_device_create_file(v4ldev, &class_device_attr_i2c_reg);
                 video_device_create_file(v4ldev, &class_device_attr_i2c_val);
         }
@@ -1312,7 +1316,7 @@ static int sn9c102_set_scale(struct sn9c102_device* cam, u8 scale)
 
 static int sn9c102_set_crop(struct sn9c102_device* cam, struct v4l2_rect* rect)
 {
-        struct sn9c102_sensor* s = cam->sensor;
+        struct sn9c102_sensor* s = &cam->sensor;
         u8 h_start = (u8)(rect->left - s->cropcap.bounds.left),
            v_start = (u8)(rect->top - s->cropcap.bounds.top),
            h_size = (u8)(rect->width / 16),
@@ -1335,7 +1339,7 @@ static int sn9c102_set_crop(struct sn9c102_device* cam, struct v4l2_rect* rect)
 
 static int sn9c102_init(struct sn9c102_device* cam)
 {
-        struct sn9c102_sensor* s = cam->sensor;
+        struct sn9c102_sensor* s = &cam->sensor;
         struct v4l2_control ctrl;
         struct v4l2_queryctrl *qctrl;
         struct v4l2_rect* rect;
@@ -1404,7 +1408,7 @@ static int sn9c102_init(struct sn9c102_device* cam)
         }
 
         if (!(cam->state & DEV_INITIALIZED)) {
-                init_MUTEX(&cam->fileop_sem);
+                mutex_init(&cam->fileop_mutex);
                 spin_lock_init(&cam->queue_lock);
                 init_waitqueue_head(&cam->wait_frame);
                 init_waitqueue_head(&cam->wait_stream);
@@ -1422,13 +1426,15 @@ static int sn9c102_init(struct sn9c102_device* cam)
 
 static void sn9c102_release_resources(struct sn9c102_device* cam)
 {
-        down(&sn9c102_sysfs_lock);
+        mutex_lock(&sn9c102_sysfs_lock);
 
         DBG(2, "V4L2 device /dev/video%d deregistered", cam->v4ldev->minor);
         video_set_drvdata(cam->v4ldev, NULL);
         video_unregister_device(cam->v4ldev);
 
-        up(&sn9c102_sysfs_lock);
+        usb_put_dev(cam->usbdev);
+
+        mutex_unlock(&sn9c102_sysfs_lock);
 
         kfree(cam->control_buffer);
 }
@@ -1449,7 +1455,7 @@ static int sn9c102_open(struct inode* inode, struct file* filp)
 
         cam = video_get_drvdata(video_devdata(filp));
 
-        if (down_interruptible(&cam->dev_sem)) {
+        if (mutex_lock_interruptible(&cam->dev_mutex)) {
                 up_read(&sn9c102_disconnect);
                 return -ERESTARTSYS;
         }
@@ -1461,7 +1467,7 @@ static int sn9c102_open(struct inode* inode, struct file* filp)
                         err = -EWOULDBLOCK;
                         goto out;
                 }
-                up(&cam->dev_sem);
+                mutex_unlock(&cam->dev_mutex);
                 err = wait_event_interruptible_exclusive(cam->open,
                                                   cam->state & DEV_DISCONNECTED
                                                          || !cam->users);
@@ -1473,7 +1479,7 @@ static int sn9c102_open(struct inode* inode, struct file* filp)
                         up_read(&sn9c102_disconnect);
                         return -ENODEV;
                 }
-                down(&cam->dev_sem);
+                mutex_lock(&cam->dev_mutex);
         }
 
 
@@ -1501,7 +1507,7 @@ static int sn9c102_open(struct inode* inode, struct file* filp)
         DBG(3, "Video device /dev/video%d is open", cam->v4ldev->minor);
 
 out:
-        up(&cam->dev_sem);
+        mutex_unlock(&cam->dev_mutex);
         up_read(&sn9c102_disconnect);
         return err;
 }
@@ -1511,7 +1517,7 @@ static int sn9c102_release(struct inode* inode, struct file* filp)
 {
         struct sn9c102_device* cam = video_get_drvdata(video_devdata(filp));
 
-        down(&cam->dev_sem); /* prevent disconnect() to be called */
+        mutex_lock(&cam->dev_mutex); /* prevent disconnect() to be called */
 
         sn9c102_stop_transfer(cam);
 
@@ -1519,7 +1525,7 @@ static int sn9c102_release(struct inode* inode, struct file* filp)
 
         if (cam->state & DEV_DISCONNECTED) {
                 sn9c102_release_resources(cam);
-                up(&cam->dev_sem);
+                mutex_unlock(&cam->dev_mutex);
                 kfree(cam);
                 return 0;
         }
@@ -1529,7 +1535,7 @@ static int sn9c102_release(struct inode* inode, struct file* filp)
 
         DBG(3, "Video device /dev/video%d closed", cam->v4ldev->minor);
 
-        up(&cam->dev_sem);
+        mutex_unlock(&cam->dev_mutex);
 
         return 0;
 }
@@ -1541,35 +1547,36 @@ sn9c102_read(struct file* filp, char __user * buf, size_t count, loff_t* f_pos)
         struct sn9c102_device* cam = video_get_drvdata(video_devdata(filp));
         struct sn9c102_frame_t* f, * i;
         unsigned long lock_flags;
+        long timeout;
         int err = 0;
 
-        if (down_interruptible(&cam->fileop_sem))
+        if (mutex_lock_interruptible(&cam->fileop_mutex))
                 return -ERESTARTSYS;
 
         if (cam->state & DEV_DISCONNECTED) {
                 DBG(1, "Device not present");
-                up(&cam->fileop_sem);
+                mutex_unlock(&cam->fileop_mutex);
                 return -ENODEV;
         }
 
         if (cam->state & DEV_MISCONFIGURED) {
                 DBG(1, "The camera is misconfigured. Close and open it "
                        "again.");
-                up(&cam->fileop_sem);
+                mutex_unlock(&cam->fileop_mutex);
                 return -EIO;
         }
 
         if (cam->io == IO_MMAP) {
                 DBG(3, "Close and open the device again to choose "
                        "the read method");
-                up(&cam->fileop_sem);
+                mutex_unlock(&cam->fileop_mutex);
                 return -EINVAL;
         }
 
         if (cam->io == IO_NONE) {
                 if (!sn9c102_request_buffers(cam,cam->nreadbuffers, IO_READ)) {
                         DBG(1, "read() failed, not enough memory");
-                        up(&cam->fileop_sem);
+                        mutex_unlock(&cam->fileop_mutex);
                         return -ENOMEM;
                 }
                 cam->io = IO_READ;
@@ -1583,30 +1590,32 @@ sn9c102_read(struct file* filp, char __user * buf, size_t count, loff_t* f_pos)
         }
 
         if (!count) {
-                up(&cam->fileop_sem);
+                mutex_unlock(&cam->fileop_mutex);
                 return 0;
         }
 
         if (list_empty(&cam->outqueue)) {
                 if (filp->f_flags & O_NONBLOCK) {
-                        up(&cam->fileop_sem);
+                        mutex_unlock(&cam->fileop_mutex);
                         return -EAGAIN;
                 }
-                err = wait_event_interruptible
-                      ( cam->wait_frame, 
-                        (!list_empty(&cam->outqueue)) ||
-                        (cam->state & DEV_DISCONNECTED) ||
-                        (cam->state & DEV_MISCONFIGURED) );
-                if (err) {
-                        up(&cam->fileop_sem);
-                        return err;
+                timeout = wait_event_interruptible_timeout
+                          ( cam->wait_frame,
+                            (!list_empty(&cam->outqueue)) ||
+                            (cam->state & DEV_DISCONNECTED) ||
+                            (cam->state & DEV_MISCONFIGURED),
+                            cam->module_param.frame_timeout *
+                            1000 * msecs_to_jiffies(1) );
+                if (timeout < 0) {
+                        mutex_unlock(&cam->fileop_mutex);
+                        return timeout;
                 }
                 if (cam->state & DEV_DISCONNECTED) {
-                        up(&cam->fileop_sem);
+                        mutex_unlock(&cam->fileop_mutex);
                         return -ENODEV;
                 }
-                if (cam->state & DEV_MISCONFIGURED) {
-                        up(&cam->fileop_sem);
+                if (!timeout || (cam->state & DEV_MISCONFIGURED)) {
+                        mutex_unlock(&cam->fileop_mutex);
                         return -EIO;
                 }
         }
@@ -1634,7 +1643,7 @@ exit:
         PDBGG("Frame #%lu, bytes read: %zu",
               (unsigned long)f->buf.index, count);
 
-        up(&cam->fileop_sem);
+        mutex_unlock(&cam->fileop_mutex);
 
         return count;
 }
@@ -1647,7 +1656,7 @@ static unsigned int sn9c102_poll(struct file *filp, poll_table *wait)
         unsigned long lock_flags;
         unsigned int mask = 0;
 
-        if (down_interruptible(&cam->fileop_sem))
+        if (mutex_lock_interruptible(&cam->fileop_mutex))
                 return POLLERR;
 
         if (cam->state & DEV_DISCONNECTED) {
@@ -1685,12 +1694,12 @@ static unsigned int sn9c102_poll(struct file *filp, poll_table *wait)
         if (!list_empty(&cam->outqueue))
                 mask |= POLLIN | POLLRDNORM;
 
-        up(&cam->fileop_sem);
+        mutex_unlock(&cam->fileop_mutex);
 
         return mask;
 
 error:
-        up(&cam->fileop_sem);
+        mutex_unlock(&cam->fileop_mutex);
         return POLLERR;
 }
 
@@ -1724,25 +1733,25 @@ static int sn9c102_mmap(struct file* filp, struct vm_area_struct *vma)
         void *pos;
         u32 i;
 
-        if (down_interruptible(&cam->fileop_sem))
+        if (mutex_lock_interruptible(&cam->fileop_mutex))
                 return -ERESTARTSYS;
 
         if (cam->state & DEV_DISCONNECTED) {
                 DBG(1, "Device not present");
-                up(&cam->fileop_sem);
+                mutex_unlock(&cam->fileop_mutex);
                 return -ENODEV;
         }
 
         if (cam->state & DEV_MISCONFIGURED) {
                 DBG(1, "The camera is misconfigured. Close and open it "
                        "again.");
-                up(&cam->fileop_sem);
+                mutex_unlock(&cam->fileop_mutex);
                 return -EIO;
         }
 
         if (cam->io != IO_MMAP || !(vma->vm_flags & VM_WRITE) ||
             size != PAGE_ALIGN(cam->frame[0].buf.length)) {
-                up(&cam->fileop_sem);
+                mutex_unlock(&cam->fileop_mutex);
                 return -EINVAL;
         }
 
@@ -1751,7 +1760,7 @@ static int sn9c102_mmap(struct file* filp, struct vm_area_struct *vma)
                         break;
         }
         if (i == cam->nbuffers) {
-                up(&cam->fileop_sem);
+                mutex_unlock(&cam->fileop_mutex);
                 return -EINVAL;
         }
 
@@ -1761,7 +1770,7 @@ static int sn9c102_mmap(struct file* filp, struct vm_area_struct *vma)
         pos = cam->frame[i].bufmem;
         while (size > 0) { /* size is page-aligned */
                 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
-                        up(&cam->fileop_sem);
+                        mutex_unlock(&cam->fileop_mutex);
                         return -EAGAIN;
                 }
                 start += PAGE_SIZE;
@@ -1774,7 +1783,7 @@ static int sn9c102_mmap(struct file* filp, struct vm_area_struct *vma)
 
         sn9c102_vm_open(vma);
 
-        up(&cam->fileop_sem);
+        mutex_unlock(&cam->fileop_mutex);
 
         return 0;
 }
@@ -1816,6 +1825,7 @@ sn9c102_vidioc_enuminput(struct sn9c102_device* cam, void __user * arg)
 
         memset(&i, 0, sizeof(i));
         strcpy(i.name, "Camera");
+        i.type = V4L2_INPUT_TYPE_CAMERA;
 
         if (copy_to_user(arg, &i, sizeof(i)))
                 return -EFAULT;
@@ -1825,7 +1835,19 @@ sn9c102_vidioc_enuminput(struct sn9c102_device* cam, void __user * arg)
 
 
 static int
-sn9c102_vidioc_gs_input(struct sn9c102_device* cam, void __user * arg)
+sn9c102_vidioc_g_input(struct sn9c102_device* cam, void __user * arg)
+{
+        int index = 0;
+
+        if (copy_to_user(arg, &index, sizeof(index)))
+                return -EFAULT;
+
+        return 0;
+}
+
+
+static int
+sn9c102_vidioc_s_input(struct sn9c102_device* cam, void __user * arg)
 {
         int index;
 
@@ -1842,7 +1864,7 @@ sn9c102_vidioc_gs_input(struct sn9c102_device* cam, void __user * arg)
 static int
 sn9c102_vidioc_query_ctrl(struct sn9c102_device* cam, void __user * arg)
 {
-        struct sn9c102_sensor* s = cam->sensor;
+        struct sn9c102_sensor* s = &cam->sensor;
         struct v4l2_queryctrl qc;
         u8 i;
 
@@ -1864,7 +1886,7 @@ sn9c102_vidioc_query_ctrl(struct sn9c102_device* cam, void __user * arg)
 static int
 sn9c102_vidioc_g_ctrl(struct sn9c102_device* cam, void __user * arg)
 {
-        struct sn9c102_sensor* s = cam->sensor;
+        struct sn9c102_sensor* s = &cam->sensor;
         struct v4l2_control ctrl;
         int err = 0;
         u8 i;
@@ -1896,7 +1918,7 @@ exit:
 static int
 sn9c102_vidioc_s_ctrl(struct sn9c102_device* cam, void __user * arg)
 {
-        struct sn9c102_sensor* s = cam->sensor;
+        struct sn9c102_sensor* s = &cam->sensor;
         struct v4l2_control ctrl;
         u8 i;
         int err = 0;
@@ -1909,6 +1931,8 @@ sn9c102_vidioc_s_ctrl(struct sn9c102_device* cam, void __user * arg)
 
         for (i = 0; i < ARRAY_SIZE(s->qctrl); i++)
                 if (ctrl.id == s->qctrl[i].id) {
+                        if (s->qctrl[i].flags & V4L2_CTRL_FLAG_DISABLED)
+                                return -EINVAL;
                         if (ctrl.value < s->qctrl[i].minimum ||
                             ctrl.value > s->qctrl[i].maximum)
                                 return -ERANGE;
@@ -1931,7 +1955,7 @@ sn9c102_vidioc_s_ctrl(struct sn9c102_device* cam, void __user * arg)
 static int
 sn9c102_vidioc_cropcap(struct sn9c102_device* cam, void __user * arg)
 {
-        struct v4l2_cropcap* cc = &(cam->sensor->cropcap);
+        struct v4l2_cropcap* cc = &(cam->sensor.cropcap);
 
         cc->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
         cc->pixelaspect.numerator = 1;
@@ -1947,7 +1971,7 @@ sn9c102_vidioc_cropcap(struct sn9c102_device* cam, void __user * arg)
 static int
 sn9c102_vidioc_g_crop(struct sn9c102_device* cam, void __user * arg)
 {
-        struct sn9c102_sensor* s = cam->sensor;
+        struct sn9c102_sensor* s = &cam->sensor;
         struct v4l2_crop crop = {
                 .type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
         };
@@ -1964,7 +1988,7 @@ sn9c102_vidioc_g_crop(struct sn9c102_device* cam, void __user * arg)
 static int
 sn9c102_vidioc_s_crop(struct sn9c102_device* cam, void __user * arg)
 {
-        struct sn9c102_sensor* s = cam->sensor;
+        struct sn9c102_sensor* s = &cam->sensor;
         struct v4l2_crop crop;
         struct v4l2_rect* rect;
         struct v4l2_rect* bounds = &(s->cropcap.bounds);
@@ -2105,7 +2129,7 @@ static int
 sn9c102_vidioc_g_fmt(struct sn9c102_device* cam, void __user * arg)
 {
         struct v4l2_format format;
-        struct v4l2_pix_format* pfmt = &(cam->sensor->pix_format);
+        struct v4l2_pix_format* pfmt = &(cam->sensor.pix_format);
 
         if (copy_from_user(&format, arg, sizeof(format)))
                 return -EFAULT;
@@ -2130,7 +2154,7 @@ static int
 sn9c102_vidioc_try_s_fmt(struct sn9c102_device* cam, unsigned int cmd,
                          void __user * arg)
 {
-        struct sn9c102_sensor* s = cam->sensor;
+        struct sn9c102_sensor* s = &cam->sensor;
         struct v4l2_format format;
         struct v4l2_pix_format* pix;
         struct v4l2_pix_format* pfmt = &(s->pix_format);
@@ -2417,7 +2441,7 @@ sn9c102_vidioc_dqbuf(struct sn9c102_device* cam, struct file* filp,
         struct v4l2_buffer b;
         struct sn9c102_frame_t *f;
         unsigned long lock_flags;
-        int err = 0;
+        long timeout;
 
         if (copy_from_user(&b, arg, sizeof(b)))
                 return -EFAULT;
@@ -2430,16 +2454,18 @@ sn9c102_vidioc_dqbuf(struct sn9c102_device* cam, struct file* filp,
                         return -EINVAL;
                 if (filp->f_flags & O_NONBLOCK)
                         return -EAGAIN;
-                err = wait_event_interruptible
-                      ( cam->wait_frame,
-                        (!list_empty(&cam->outqueue)) ||
-                        (cam->state & DEV_DISCONNECTED) ||
-                        (cam->state & DEV_MISCONFIGURED) );
-                if (err)
-                        return err;
+                timeout = wait_event_interruptible_timeout
+                          ( cam->wait_frame,
+                            (!list_empty(&cam->outqueue)) ||
+                            (cam->state & DEV_DISCONNECTED) ||
+                            (cam->state & DEV_MISCONFIGURED),
+                            cam->module_param.frame_timeout *
+                            1000 * msecs_to_jiffies(1) );
+                if (timeout < 0)
+                        return timeout;
                 if (cam->state & DEV_DISCONNECTED)
                         return -ENODEV;
-                if (cam->state & DEV_MISCONFIGURED)
+                if (!timeout || (cam->state & DEV_MISCONFIGURED))
                         return -EIO;
         }
 
@@ -2571,8 +2597,10 @@ static int sn9c102_ioctl_v4l2(struct inode* inode, struct file* filp,
                 return sn9c102_vidioc_enuminput(cam, arg);
 
         case VIDIOC_G_INPUT:
+                return sn9c102_vidioc_g_input(cam, arg);
+
         case VIDIOC_S_INPUT:
-                return sn9c102_vidioc_gs_input(cam, arg);
+                return sn9c102_vidioc_s_input(cam, arg);
 
         case VIDIOC_QUERYCTRL:
                 return sn9c102_vidioc_query_ctrl(cam, arg);
@@ -2655,19 +2683,19 @@ static int sn9c102_ioctl(struct inode* inode, struct file* filp,
         struct sn9c102_device* cam = video_get_drvdata(video_devdata(filp));
         int err = 0;
 
-        if (down_interruptible(&cam->fileop_sem))
+        if (mutex_lock_interruptible(&cam->fileop_mutex))
                 return -ERESTARTSYS;
 
         if (cam->state & DEV_DISCONNECTED) {
                 DBG(1, "Device not present");
-                up(&cam->fileop_sem);
+                mutex_unlock(&cam->fileop_mutex);
                 return -ENODEV;
         }
 
         if (cam->state & DEV_MISCONFIGURED) {
                 DBG(1, "The camera is misconfigured. Close and open it "
                        "again.");
-                up(&cam->fileop_sem);
+                mutex_unlock(&cam->fileop_mutex);
                 return -EIO;
         }
 
@@ -2675,7 +2703,7 @@ static int sn9c102_ioctl(struct inode* inode, struct file* filp,
 
         err = sn9c102_ioctl_v4l2(inode, filp, cmd, (void __user *)arg);
 
-        up(&cam->fileop_sem);
+        mutex_unlock(&cam->fileop_mutex);
 
         return err;
 }
@@ -2722,7 +2750,7 @@ sn9c102_usb_probe(struct usb_interface* intf, const struct usb_device_id* id)
                 goto fail;
         }
 
-        init_MUTEX(&cam->dev_sem);
+        mutex_init(&cam->dev_mutex);
 
         r = sn9c102_read_reg(cam, 0x00);
         if (r < 0 || r != 0x10) {
@@ -2752,10 +2780,10 @@ sn9c102_usb_probe(struct usb_interface* intf, const struct usb_device_id* id)
                         break;
         }
 
-        if (!err && cam->sensor) {
-                DBG(2, "%s image sensor detected", cam->sensor->name);
+        if (!err) {
+                DBG(2, "%s image sensor detected", cam->sensor.name);
                 DBG(3, "Support for %s maintained by %s",
-                    cam->sensor->name, cam->sensor->maintainer);
+                    cam->sensor.name, cam->sensor.maintainer);
         } else {
                 DBG(1, "No supported image sensor detected");
                 err = -ENODEV;
@@ -2776,7 +2804,7 @@ sn9c102_usb_probe(struct usb_interface* intf, const struct usb_device_id* id)
         cam->v4ldev->release = video_device_release;
         video_set_drvdata(cam->v4ldev, cam);
 
-        down(&cam->dev_sem);
+        mutex_lock(&cam->dev_mutex);
 
         err = video_register_device(cam->v4ldev, VFL_TYPE_GRABBER,
                                     video_nr[dev_nr]);
@@ -2786,13 +2814,14 @@ sn9c102_usb_probe(struct usb_interface* intf, const struct usb_device_id* id)
                         DBG(1, "Free /dev/videoX node not found");
                 video_nr[dev_nr] = -1;
                 dev_nr = (dev_nr < SN9C102_MAX_DEVICES-1) ? dev_nr+1 : 0;
-                up(&cam->dev_sem);
+                mutex_unlock(&cam->dev_mutex);
                 goto fail;
         }
 
         DBG(2, "V4L2 device registered as /dev/video%d", cam->v4ldev->minor);
 
         cam->module_param.force_munmap = force_munmap[dev_nr];
+        cam->module_param.frame_timeout = frame_timeout[dev_nr];
 
         dev_nr = (dev_nr < SN9C102_MAX_DEVICES-1) ? dev_nr+1 : 0;
 
@@ -2803,7 +2832,7 @@ sn9c102_usb_probe(struct usb_interface* intf, const struct usb_device_id* id)
 
         usb_set_intfdata(intf, cam);
 
-        up(&cam->dev_sem);
+        mutex_unlock(&cam->dev_mutex);
 
         return 0;
 
@@ -2827,7 +2856,7 @@ static void sn9c102_usb_disconnect(struct usb_interface* intf)
 
         down_write(&sn9c102_disconnect);
 
-        down(&cam->dev_sem); 
+        mutex_lock(&cam->dev_mutex);
 
         DBG(2, "Disconnecting %s...", cam->v4ldev->name);
 
@@ -2841,13 +2870,14 @@ static void sn9c102_usb_disconnect(struct usb_interface* intf)
                 sn9c102_stop_transfer(cam);
                 cam->state |= DEV_DISCONNECTED;
                 wake_up_interruptible(&cam->wait_frame);
-                wake_up_interruptible(&cam->wait_stream);
+                wake_up(&cam->wait_stream);
+                usb_get_dev(cam->usbdev);
         } else {
                 cam->state |= DEV_DISCONNECTED;
                 sn9c102_release_resources(cam);
         }
 
-        up(&cam->dev_sem);
+        mutex_unlock(&cam->dev_mutex);
 
         if (!cam->users)
                 kfree(cam);
diff --git a/drivers/usb/media/sn9c102_ov7630.c b/drivers/usb/media/sn9c102_ov7630.c
index 4a36519b5af4..42852b7cb042 100644
--- a/drivers/usb/media/sn9c102_ov7630.c
+++ b/drivers/usb/media/sn9c102_ov7630.c
@@ -34,8 +34,8 @@ static int ov7630_init(struct sn9c102_device* cam)
         err += sn9c102_write_reg(cam, 0x0f, 0x18);
         err += sn9c102_write_reg(cam, 0x50, 0x19);
 
-        err += sn9c102_i2c_write(cam, 0x12, 0x8d);
-        err += sn9c102_i2c_write(cam, 0x11, 0x00);
+        err += sn9c102_i2c_write(cam, 0x12, 0x80);
+        err += sn9c102_i2c_write(cam, 0x11, 0x01);
         err += sn9c102_i2c_write(cam, 0x15, 0x34);
         err += sn9c102_i2c_write(cam, 0x16, 0x03);
         err += sn9c102_i2c_write(cam, 0x17, 0x1c);
@@ -43,12 +43,14 @@ static int ov7630_init(struct sn9c102_device* cam)
         err += sn9c102_i2c_write(cam, 0x19, 0x06);
         err += sn9c102_i2c_write(cam, 0x1a, 0xf6);
         err += sn9c102_i2c_write(cam, 0x1b, 0x04);
-        err += sn9c102_i2c_write(cam, 0x20, 0x44);
+        err += sn9c102_i2c_write(cam, 0x20, 0xf6);
         err += sn9c102_i2c_write(cam, 0x23, 0xee);
         err += sn9c102_i2c_write(cam, 0x26, 0xa0);
         err += sn9c102_i2c_write(cam, 0x27, 0x9a);
-        err += sn9c102_i2c_write(cam, 0x28, 0x20);
+        err += sn9c102_i2c_write(cam, 0x28, 0xa0);
         err += sn9c102_i2c_write(cam, 0x29, 0x30);
+        err += sn9c102_i2c_write(cam, 0x2a, 0xa0);
+        err += sn9c102_i2c_write(cam, 0x2b, 0x1f);
         err += sn9c102_i2c_write(cam, 0x2f, 0x3d);
         err += sn9c102_i2c_write(cam, 0x30, 0x24);
         err += sn9c102_i2c_write(cam, 0x32, 0x86);
@@ -80,7 +82,7 @@ static int ov7630_set_ctrl(struct sn9c102_device* cam,
                 err += sn9c102_i2c_write(cam, 0x02, ctrl->value);
                 break;
         case V4L2_CID_BLUE_BALANCE:
-                err += sn9c102_i2c_write(cam, 0x03, ctrl->value);
+                err += sn9c102_i2c_write(cam, 0x01, ctrl->value);
                 break;
         case V4L2_CID_GAIN:
                 err += sn9c102_i2c_write(cam, 0x00, ctrl->value);
@@ -108,7 +110,7 @@ static int ov7630_set_ctrl(struct sn9c102_device* cam,
                 err += sn9c102_i2c_write(cam, 0x0d, ctrl->value);
                 break;
         case V4L2_CID_AUTO_WHITE_BALANCE:
-                err += sn9c102_i2c_write(cam, 0x12, (ctrl->value << 2) | 0x09);
+                err += sn9c102_i2c_write(cam, 0x12, (ctrl->value << 2) | 0x78);
                 break;
         case V4L2_CID_AUTOGAIN:
                 err += sn9c102_i2c_write(cam, 0x13, ctrl->value);
@@ -371,26 +373,29 @@ static struct sn9c102_sensor ov7630 = {
 
 int sn9c102_probe_ov7630(struct sn9c102_device* cam)
 {
+        const struct usb_device_id ov7630_id_table[] = {
+                { USB_DEVICE(0x0c45, 0x602c), },
+                { USB_DEVICE(0x0c45, 0x602d), },
+                { USB_DEVICE(0x0c45, 0x608f), },
+                { USB_DEVICE(0x0c45, 0x60b0), },
+                { }
+        };
         int err = 0;
 
-        sn9c102_attach_sensor(cam, &ov7630);
-
-        if (le16_to_cpu(ov7630.usbdev->descriptor.idProduct) != 0x602c &&
-            le16_to_cpu(ov7630.usbdev->descriptor.idProduct) != 0x602d &&
-            le16_to_cpu(ov7630.usbdev->descriptor.idProduct) != 0x608f &&
-            le16_to_cpu(ov7630.usbdev->descriptor.idProduct) != 0x60b0)
+        if (!sn9c102_match_id(cam, ov7630_id_table))
                 return -ENODEV;
 
         err += sn9c102_write_reg(cam, 0x01, 0x01);
         err += sn9c102_write_reg(cam, 0x00, 0x01);
         err += sn9c102_write_reg(cam, 0x28, 0x17);
-
         if (err)
                 return -EIO;
 
-        err += sn9c102_i2c_write(cam, 0x0b, 0);
+        err += sn9c102_i2c_try_write(cam, &ov7630, 0x0b, 0);
         if (err)
                 return -ENODEV;
 
+        sn9c102_attach_sensor(cam, &ov7630);
+
         return 0;
 }
diff --git a/drivers/usb/media/sn9c102_pas202bca.c b/drivers/usb/media/sn9c102_pas202bca.c
new file mode 100644
index 000000000000..3453237055bb
--- /dev/null
+++ b/drivers/usb/media/sn9c102_pas202bca.c
@@ -0,0 +1,238 @@
+/***************************************************************************
+ * Plug-in for PAS202BCA image sensor connected to the SN9C10x PC Camera   *
+ * Controllers                                                             *
+ *                                                                         *
+ * Copyright (C) 2006 by Luca Risolia <luca.risolia@studio.unibo.it>       *
+ *                                                                         *
+ * This program is free software; you can redistribute it and/or modify    *
+ * it under the terms of the GNU General Public License as published by    *
+ * the Free Software Foundation; either version 2 of the License, or       *
+ * (at your option) any later version.                                     *
+ *                                                                         *
+ * This program is distributed in the hope that it will be useful,         *
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of          *
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           *
+ * GNU General Public License for more details.                            *
+ *                                                                         *
+ * You should have received a copy of the GNU General Public License       *
+ * along with this program; if not, write to the Free Software             *
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.               *
+ ***************************************************************************/
+
+#include <linux/delay.h>
+#include "sn9c102_sensor.h"
+
+
+static struct sn9c102_sensor pas202bca;
+
+
+static int pas202bca_init(struct sn9c102_device* cam)
+{
+        int err = 0;
+
+        err += sn9c102_write_reg(cam, 0x00, 0x10);
+        err += sn9c102_write_reg(cam, 0x00, 0x11);
+        err += sn9c102_write_reg(cam, 0x00, 0x14);
+        err += sn9c102_write_reg(cam, 0x20, 0x17);
+        err += sn9c102_write_reg(cam, 0x30, 0x19);
+        err += sn9c102_write_reg(cam, 0x09, 0x18);
+
+        err += sn9c102_i2c_write(cam, 0x02, 0x14);
+        err += sn9c102_i2c_write(cam, 0x03, 0x40);
+        err += sn9c102_i2c_write(cam, 0x0d, 0x2c);
+        err += sn9c102_i2c_write(cam, 0x0e, 0x01);
+        err += sn9c102_i2c_write(cam, 0x0f, 0xa9);
+        err += sn9c102_i2c_write(cam, 0x10, 0x08);
+        err += sn9c102_i2c_write(cam, 0x13, 0x63);
+        err += sn9c102_i2c_write(cam, 0x15, 0x70);
+        err += sn9c102_i2c_write(cam, 0x11, 0x01);
+
+        msleep(400);
+
+        return err;
+}
+
+
+static int pas202bca_set_pix_format(struct sn9c102_device* cam,
+                                    const struct v4l2_pix_format* pix)
+{
+        int err = 0;
+
+        if (pix->pixelformat == V4L2_PIX_FMT_SN9C10X)
+                err += sn9c102_write_reg(cam, 0x24, 0x17);
+        else
+                err += sn9c102_write_reg(cam, 0x20, 0x17);
+
+        return err;
+}
+
+
+static int pas202bca_set_ctrl(struct sn9c102_device* cam,
+                              const struct v4l2_control* ctrl)
+{
+        int err = 0;
+
+        switch (ctrl->id) {
+        case V4L2_CID_EXPOSURE:
+                err += sn9c102_i2c_write(cam, 0x04, ctrl->value >> 6);
+                err += sn9c102_i2c_write(cam, 0x05, ctrl->value & 0x3f);
+                break;
+        case V4L2_CID_RED_BALANCE:
+                err += sn9c102_i2c_write(cam, 0x09, ctrl->value);
+                break;
+        case V4L2_CID_BLUE_BALANCE:
+                err += sn9c102_i2c_write(cam, 0x07, ctrl->value);
+                break;
+        case V4L2_CID_GAIN:
+                err += sn9c102_i2c_write(cam, 0x10, ctrl->value);
+                break;
+        case SN9C102_V4L2_CID_GREEN_BALANCE:
+                err += sn9c102_i2c_write(cam, 0x08, ctrl->value);
+                break;
+        case SN9C102_V4L2_CID_DAC_MAGNITUDE:
+                err += sn9c102_i2c_write(cam, 0x0c, ctrl->value);
+                break;
+        default:
+                return -EINVAL;
+        }
+        err += sn9c102_i2c_write(cam, 0x11, 0x01);
+
+        return err ? -EIO : 0;
+}
+
+
+static int pas202bca_set_crop(struct sn9c102_device* cam,
+                              const struct v4l2_rect* rect)
+{
+        struct sn9c102_sensor* s = &pas202bca;
+        int err = 0;
+        u8 h_start = (u8)(rect->left - s->cropcap.bounds.left) + 3,
+           v_start = (u8)(rect->top - s->cropcap.bounds.top) + 3;
+
+        err += sn9c102_write_reg(cam, h_start, 0x12);
+        err += sn9c102_write_reg(cam, v_start, 0x13);
+
+        return err;
+}
+
+
+static struct sn9c102_sensor pas202bca = {
+        .name = "PAS202BCA",
+        .maintainer = "Luca Risolia <luca.risolia@studio.unibo.it>",
+        .sysfs_ops = SN9C102_I2C_READ | SN9C102_I2C_WRITE,
+        .frequency = SN9C102_I2C_400KHZ | SN9C102_I2C_100KHZ,
+        .interface = SN9C102_I2C_2WIRES,
+        .i2c_slave_id = 0x40,
+        .init = &pas202bca_init,
+        .qctrl = {
+                {
+                        .id = V4L2_CID_EXPOSURE,
+                        .type = V4L2_CTRL_TYPE_INTEGER,
+                        .name = "exposure",
+                        .minimum = 0x01e5,
+                        .maximum = 0x3fff,
+                        .step = 0x0001,
+                        .default_value = 0x01e5,
+                        .flags = 0,
+                },
+                {
+                        .id = V4L2_CID_GAIN,
+                        .type = V4L2_CTRL_TYPE_INTEGER,
+                        .name = "global gain",
+                        .minimum = 0x00,
+                        .maximum = 0x1f,
+                        .step = 0x01,
+                        .default_value = 0x0c,
+                        .flags = 0,
+                },
+                {
+                        .id = V4L2_CID_RED_BALANCE,
+                        .type = V4L2_CTRL_TYPE_INTEGER,
+                        .name = "red balance",
+                        .minimum = 0x00,
+                        .maximum = 0x0f,
+                        .step = 0x01,
+                        .default_value = 0x01,
+                        .flags = 0,
+                },
+                {
+                        .id = V4L2_CID_BLUE_BALANCE,
+                        .type = V4L2_CTRL_TYPE_INTEGER,
+                        .name = "blue balance",
+                        .minimum = 0x00,
+                        .maximum = 0x0f,
+                        .step = 0x01,
+                        .default_value = 0x05,
+                        .flags = 0,
+                },
+                {
+                        .id = SN9C102_V4L2_CID_GREEN_BALANCE,
+                        .type = V4L2_CTRL_TYPE_INTEGER,
+                        .name = "green balance",
+                        .minimum = 0x00,
+                        .maximum = 0x0f,
+                        .step = 0x01,
+                        .default_value = 0x00,
+                        .flags = 0,
+                },
+                {
+                        .id = SN9C102_V4L2_CID_DAC_MAGNITUDE,
+                        .type = V4L2_CTRL_TYPE_INTEGER,
+                        .name = "DAC magnitude",
+                        .minimum = 0x00,
+                        .maximum = 0xff,
+                        .step = 0x01,
+                        .default_value = 0x04,
+                        .flags = 0,
+                },
+        },
+        .set_ctrl = &pas202bca_set_ctrl,
+        .cropcap = {
+                .bounds = {
+                        .left = 0,
+                        .top = 0,
+                        .width = 640,
+                        .height = 480,
+                },
+                .defrect = {
+                        .left = 0,
+                        .top = 0,
+                        .width = 640,
+                        .height = 480,
+                },
+        },
+        .set_crop = &pas202bca_set_crop,
+        .pix_format = {
+                .width = 640,
+                .height = 480,
+                .pixelformat = V4L2_PIX_FMT_SBGGR8,
+                .priv = 8,
+        },
+        .set_pix_format = &pas202bca_set_pix_format
+};
+
+
+int sn9c102_probe_pas202bca(struct sn9c102_device* cam)
+{
+        const struct usb_device_id pas202bca_id_table[] = {
+                { USB_DEVICE(0x0c45, 0x60af), },
+                { }
+        };
+        int err = 0;
+
+        if (!sn9c102_match_id(cam,pas202bca_id_table))
+                return -ENODEV;
+
+        err += sn9c102_write_reg(cam, 0x01, 0x01);
+        err += sn9c102_write_reg(cam, 0x40, 0x01);
+        err += sn9c102_write_reg(cam, 0x28, 0x17);
+        if (err)
+                return -EIO;
+
+        if (sn9c102_i2c_try_write(cam, &pas202bca, 0x10, 0)) /* try to write */
+                return -ENODEV;
+
+        sn9c102_attach_sensor(cam, &pas202bca);
+
+        return 0;
+}
diff --git a/drivers/usb/media/sn9c102_pas202bcb.c b/drivers/usb/media/sn9c102_pas202bcb.c
index 5ca54c7daaf2..d068616ab337 100644
--- a/drivers/usb/media/sn9c102_pas202bcb.c
+++ b/drivers/usb/media/sn9c102_pas202bcb.c
@@ -263,7 +263,7 @@ static struct sn9c102_sensor pas202bcb = {
 
 
 int sn9c102_probe_pas202bcb(struct sn9c102_device* cam)
-{       
+{
         int r0 = 0, r1 = 0, err = 0;
         unsigned int pid = 0;
 
diff --git a/drivers/usb/media/sn9c102_sensor.h b/drivers/usb/media/sn9c102_sensor.h
index 7d953b24f2f2..2afd9e9d09bb 100644
--- a/drivers/usb/media/sn9c102_sensor.h
+++ b/drivers/usb/media/sn9c102_sensor.h
@@ -66,6 +66,7 @@ extern int sn9c102_probe_hv7131d(struct sn9c102_device* cam);
 extern int sn9c102_probe_mi0343(struct sn9c102_device* cam);
 extern int sn9c102_probe_ov7630(struct sn9c102_device* cam);
 extern int sn9c102_probe_pas106b(struct sn9c102_device* cam);
+extern int sn9c102_probe_pas202bca(struct sn9c102_device* cam);
 extern int sn9c102_probe_pas202bcb(struct sn9c102_device* cam);
 extern int sn9c102_probe_tas5110c1b(struct sn9c102_device* cam);
 extern int sn9c102_probe_tas5130d1b(struct sn9c102_device* cam);
@@ -81,12 +82,17 @@ static int (*sn9c102_sensor_table[])(struct sn9c102_device*) = {              \
         &sn9c102_probe_pas106b, /* strong detection based on SENSOR ids */    \
         &sn9c102_probe_pas202bcb, /* strong detection based on SENSOR ids */  \
         &sn9c102_probe_hv7131d, /* strong detection based on SENSOR ids */    \
+        &sn9c102_probe_pas202bca, /* detection mostly based on USB pid/vid */ \
         &sn9c102_probe_ov7630, /* detection mostly based on USB pid/vid */    \
         &sn9c102_probe_tas5110c1b, /* detection based on USB pid/vid */       \
         &sn9c102_probe_tas5130d1b, /* detection based on USB pid/vid */       \
         NULL,                                                                 \
 };
 
+/* Device identification */
+extern struct sn9c102_device*
+sn9c102_match_id(struct sn9c102_device* cam, const struct usb_device_id *id);
+
 /* Attach a probed sensor to the camera. */
 extern void 
 sn9c102_attach_sensor(struct sn9c102_device* cam,
@@ -108,6 +114,7 @@ sn9c102_attach_sensor(struct sn9c102_device* cam,
 static const struct usb_device_id sn9c102_id_table[] = {                      \
         { USB_DEVICE(0x0c45, 0x6001), }, /* TAS5110C1B */                     \
         { USB_DEVICE(0x0c45, 0x6005), }, /* TAS5110C1B */                     \
+        { USB_DEVICE(0x0c45, 0x6007), },                                      \
         { USB_DEVICE(0x0c45, 0x6009), }, /* PAS106B */                        \
         { USB_DEVICE(0x0c45, 0x600d), }, /* PAS106B */                        \
         { USB_DEVICE(0x0c45, 0x6024), },                                      \
@@ -126,7 +133,7 @@ static const struct usb_device_id sn9c102_id_table[] = {                      \
         { SN9C102_USB_DEVICE(0x0c45, 0x6088, 0xff), },                        \
         { SN9C102_USB_DEVICE(0x0c45, 0x608a, 0xff), },                        \
         { SN9C102_USB_DEVICE(0x0c45, 0x608b, 0xff), },                        \
-        { SN9C102_USB_DEVICE(0x0c45, 0x608c, 0xff), }, /* HV7131x */          \
+        { SN9C102_USB_DEVICE(0x0c45, 0x608c, 0xff), }, /* HV7131/R */         \
         { SN9C102_USB_DEVICE(0x0c45, 0x608e, 0xff), }, /* CIS-VF10 */         \
         { SN9C102_USB_DEVICE(0x0c45, 0x608f, 0xff), }, /* OV7630 */           \
         { SN9C102_USB_DEVICE(0x0c45, 0x60a0, 0xff), },                        \
@@ -359,12 +366,6 @@ struct sn9c102_sensor {
            error code without rolling back.
         */
 
-        const struct usb_device* usbdev;
-        /*
-           Points to the usb_device struct after the sensor is attached.
-           Do not touch unless you know what you are doing.
-        */
-
         /*
            Do NOT write to the data below, it's READ ONLY. It is used by the
            core module to store successfully updated values of the above
diff --git a/drivers/usb/media/sn9c102_tas5110c1b.c b/drivers/usb/media/sn9c102_tas5110c1b.c
index 32ddf236cafe..2e08c552f40a 100644
--- a/drivers/usb/media/sn9c102_tas5110c1b.c
+++ b/drivers/usb/media/sn9c102_tas5110c1b.c
@@ -142,14 +142,18 @@ static struct sn9c102_sensor tas5110c1b = {
 
 int sn9c102_probe_tas5110c1b(struct sn9c102_device* cam)
 {
-        /* This sensor has no identifiers, so let's attach it anyway */
-        sn9c102_attach_sensor(cam, &tas5110c1b);
+        const struct usb_device_id tas5110c1b_id_table[] = {
+                { USB_DEVICE(0x0c45, 0x6001), },
+                { USB_DEVICE(0x0c45, 0x6005), },
+                { USB_DEVICE(0x0c45, 0x60ab), },
+                { }
+        };
 
         /* Sensor detection is based on USB pid/vid */
-        if (le16_to_cpu(tas5110c1b.usbdev->descriptor.idProduct) != 0x6001 &&
-            le16_to_cpu(tas5110c1b.usbdev->descriptor.idProduct) != 0x6005 &&
-            le16_to_cpu(tas5110c1b.usbdev->descriptor.idProduct) != 0x60ab)
+        if (!sn9c102_match_id(cam, tas5110c1b_id_table))
                 return -ENODEV;
 
+        sn9c102_attach_sensor(cam, &tas5110c1b);
+
         return 0;
 }
diff --git a/drivers/usb/media/sn9c102_tas5130d1b.c b/drivers/usb/media/sn9c102_tas5130d1b.c
index a0728f0ae00c..c7b339740bbf 100644
--- a/drivers/usb/media/sn9c102_tas5130d1b.c
+++ b/drivers/usb/media/sn9c102_tas5130d1b.c
@@ -153,13 +153,17 @@ static struct sn9c102_sensor tas5130d1b = {
 
 int sn9c102_probe_tas5130d1b(struct sn9c102_device* cam)
 {
-        /* This sensor has no identifiers, so let's attach it anyway */
-        sn9c102_attach_sensor(cam, &tas5130d1b);
+        const struct usb_device_id tas5130d1b_id_table[] = {
+                { USB_DEVICE(0x0c45, 0x6025), },
+                { USB_DEVICE(0x0c45, 0x60aa), },
+                { }
+        };
 
         /* Sensor detection is based on USB pid/vid */
-        if (le16_to_cpu(tas5130d1b.usbdev->descriptor.idProduct) != 0x6025 &&
-            le16_to_cpu(tas5130d1b.usbdev->descriptor.idProduct) != 0x60aa)
+        if (!sn9c102_match_id(cam, tas5130d1b_id_table))
                 return -ENODEV;
 
+        sn9c102_attach_sensor(cam, &tas5130d1b);
+
         return 0;
 }
diff --git a/drivers/usb/media/stv680.c b/drivers/usb/media/stv680.c
index b497a6a0a206..9636da20748d 100644
--- a/drivers/usb/media/stv680.c
+++ b/drivers/usb/media/stv680.c
@@ -67,6 +67,7 @@
 #include <linux/errno.h>
 #include <linux/videodev.h>
 #include <linux/usb.h>
+#include <linux/mutex.h>
 
 #include "stv680.h"
 
@@ -317,12 +318,11 @@ static int stv_init (struct usb_stv *stv680)
         unsigned char *buffer;
         unsigned long int bufsize;
 
-        buffer = kmalloc (40, GFP_KERNEL);
+        buffer = kzalloc (40, GFP_KERNEL);
         if (buffer == NULL) {
                 PDEBUG (0, "STV(e): Out of (small buf) memory");
                 return -1;
         }
-        memset (buffer, 0, 40);
         udelay (100);
 
         /* set config 1, interface 0, alternate 0 */
@@ -1258,22 +1258,22 @@ static int stv680_mmap (struct file *file, struct vm_area_struct *vma)
         unsigned long size  = vma->vm_end-vma->vm_start;
         unsigned long page, pos;
 
-        down (&stv680->lock);
+        mutex_lock(&stv680->lock);
 
         if (stv680->udev == NULL) {
-                up (&stv680->lock);
+                mutex_unlock(&stv680->lock);
                 return -EIO;
         }
         if (size > (((STV680_NUMFRAMES * stv680->maxframesize) + PAGE_SIZE - 1)
                     & ~(PAGE_SIZE - 1))) {
-                up (&stv680->lock);
+                mutex_unlock(&stv680->lock);
                 return -EINVAL;
         }
         pos = (unsigned long) stv680->fbuf;
         while (size > 0) {
                 page = vmalloc_to_pfn((void *)pos);
                 if (remap_pfn_range(vma, start, page, PAGE_SIZE, PAGE_SHARED)) {
-                        up (&stv680->lock);
+                        mutex_unlock(&stv680->lock);
                         return -EAGAIN;
                 }
                 start += PAGE_SIZE;
@@ -1283,7 +1283,7 @@ static int stv680_mmap (struct file *file, struct vm_area_struct *vma)
                 else
                         size = 0;
         }
-        up (&stv680->lock);
+        mutex_unlock(&stv680->lock);
 
         return 0;
 }
@@ -1387,14 +1387,12 @@ static int stv680_probe (struct usb_interface *intf, const struct usb_device_id
                 goto error;
         }
         /* We found one */
-        if ((stv680 = kmalloc (sizeof (*stv680), GFP_KERNEL)) == NULL) {
+        if ((stv680 = kzalloc (sizeof (*stv680), GFP_KERNEL)) == NULL) {
                 PDEBUG (0, "STV(e): couldn't kmalloc stv680 struct.");
                 retval = -ENOMEM;
                 goto error;
         }
 
-        memset (stv680, 0, sizeof (*stv680));
-
         stv680->udev = dev;
         stv680->camera_name = camera_name;
 
@@ -1409,7 +1407,7 @@ static int stv680_probe (struct usb_interface *intf, const struct usb_device_id
 
         memcpy (stv680->vdev->name, stv680->camera_name, strlen (stv680->camera_name));
         init_waitqueue_head (&stv680->wq);
-        init_MUTEX (&stv680->lock);
+        mutex_init (&stv680->lock);
         wmb ();
 
         if (video_register_device (stv680->vdev, VFL_TYPE_GRABBER, video_nr) == -1) {
diff --git a/drivers/usb/media/stv680.h b/drivers/usb/media/stv680.h
index b0551cdb280b..ea46e0001e6d 100644
--- a/drivers/usb/media/stv680.h
+++ b/drivers/usb/media/stv680.h
@@ -118,7 +118,7 @@ struct usb_stv {
         int origGain;
         int origMode;           /* original camera mode */
 
-        struct semaphore lock;  /* to lock the structure */
+        struct mutex lock;      /* to lock the structure */
         int user;               /* user count for exclusive use */
         int removed;            /* device disconnected */
         int streaming;          /* Are we streaming video? */
diff --git a/drivers/usb/media/usbvideo.c b/drivers/usb/media/usbvideo.c
index 63a72e550a1b..0b51fae720a9 100644
--- a/drivers/usb/media/usbvideo.c
+++ b/drivers/usb/media/usbvideo.c
@@ -690,14 +690,13 @@ int usbvideo_register(
         }
 
         base_size = num_cams * sizeof(struct uvd) + sizeof(struct usbvideo);
-        cams = (struct usbvideo *) kmalloc(base_size, GFP_KERNEL);
+        cams = (struct usbvideo *) kzalloc(base_size, GFP_KERNEL);
         if (cams == NULL) {
                 err("Failed to allocate %d. bytes for usbvideo struct", base_size);
                 return -ENOMEM;
         }
         dbg("%s: Allocated $%p (%d. bytes) for %d. cameras",
             __FUNCTION__, cams, base_size, num_cams);
-        memset(cams, 0, base_size);
 
         /* Copy callbacks, apply defaults for those that are not set */
         memmove(&cams->cb, cbTbl, sizeof(cams->cb));
@@ -715,7 +714,7 @@ int usbvideo_register(
         cams->md_module = md;
         if (cams->md_module == NULL)
                 warn("%s: module == NULL!", __FUNCTION__);
-        init_MUTEX(&cams->lock);        /* to 1 == available */
+        mutex_init(&cams->lock);        /* to 1 == available */
 
         for (i = 0; i < num_cams; i++) {
                 struct uvd *up = &cams->cam[i];
@@ -863,7 +862,7 @@ static void usbvideo_Disconnect(struct usb_interface *intf)
         if (uvd->debug > 0)
                 info("%s(%p.)", __FUNCTION__, intf);
 
-        down(&uvd->lock);
+        mutex_lock(&uvd->lock);
         uvd->remove_pending = 1; /* Now all ISO data will be ignored */
 
         /* At this time we ask to cancel outstanding URBs */
@@ -883,7 +882,7 @@ static void usbvideo_Disconnect(struct usb_interface *intf)
                 info("%s: In use, disconnect pending.", __FUNCTION__);
         else
                 usbvideo_CameraRelease(uvd);
-        up(&uvd->lock);
+        mutex_unlock(&uvd->lock);
         info("USB camera disconnected.");
 
         usbvideo_ClientDecModCount(uvd);
@@ -930,19 +929,19 @@ static int usbvideo_find_struct(struct usbvideo *cams)
                 err("No usbvideo handle?");
                 return -1;
         }
-        down(&cams->lock);
+        mutex_lock(&cams->lock);
         for (u = 0; u < cams->num_cameras; u++) {
                 struct uvd *uvd = &cams->cam[u];
                 if (!uvd->uvd_used) /* This one is free */
                 {
                         uvd->uvd_used = 1;      /* In use now */
-                        init_MUTEX(&uvd->lock); /* to 1 == available */
+                        mutex_init(&uvd->lock); /* to 1 == available */
                         uvd->dev = NULL;
                         rv = u;
                         break;
                 }
         }
-        up(&cams->lock);
+        mutex_unlock(&cams->lock);
         return rv;
 }
 
@@ -984,7 +983,7 @@ struct uvd *usbvideo_AllocateDevice(struct usbvideo *cams)
         /* Not relying upon caller we increase module counter ourselves */
         usbvideo_ClientIncModCount(uvd);
 
-        down(&uvd->lock);
+        mutex_lock(&uvd->lock);
         for (i=0; i < USBVIDEO_NUMSBUF; i++) {
                 uvd->sbuf[i].urb = usb_alloc_urb(FRAMES_PER_DESC, GFP_KERNEL);
                 if (uvd->sbuf[i].urb == NULL) {
@@ -1007,7 +1006,7 @@ struct uvd *usbvideo_AllocateDevice(struct usbvideo *cams)
          * return control to the client's probe function right now.
          */
 allocate_done:
-        up (&uvd->lock);
+        mutex_unlock(&uvd->lock);
         usbvideo_ClientDecModCount(uvd);
         return uvd;
 }
@@ -1121,7 +1120,7 @@ static int usbvideo_v4l_open(struct inode *inode, struct file *file)
                 info("%s($%p)", __FUNCTION__, dev);
 
         usbvideo_ClientIncModCount(uvd);
-        down(&uvd->lock);
+        mutex_lock(&uvd->lock);
 
         if (uvd->user) {
                 err("%s: Someone tried to open an already opened device!", __FUNCTION__);
@@ -1202,7 +1201,7 @@ static int usbvideo_v4l_open(struct inode *inode, struct file *file)
                         }
                 }
         }
-        up(&uvd->lock);
+        mutex_unlock(&uvd->lock);
         if (errCode != 0)
                 usbvideo_ClientDecModCount(uvd);
         if (uvd->debug > 0)
@@ -1231,7 +1230,7 @@ static int usbvideo_v4l_close(struct inode *inode, struct file *file)
         if (uvd->debug > 1)
                 info("%s($%p)", __FUNCTION__, dev);
 
-        down(&uvd->lock);
+        mutex_lock(&uvd->lock);
         GET_CALLBACK(uvd, stopDataPump)(uvd);
         usbvideo_rvfree(uvd->fbuf, uvd->fbuf_size);
         uvd->fbuf = NULL;
@@ -1252,7 +1251,7 @@ static int usbvideo_v4l_close(struct inode *inode, struct file *file)
                         info("usbvideo_v4l_close: Final disconnect.");
                 usbvideo_CameraRelease(uvd);
         }
-        up(&uvd->lock);
+        mutex_unlock(&uvd->lock);
         usbvideo_ClientDecModCount(uvd);
 
         if (uvd->debug > 1)
@@ -1512,7 +1511,7 @@ static ssize_t usbvideo_v4l_read(struct file *file, char __user *buf,
         if (uvd->debug >= 1)
                 info("%s: %Zd. bytes, noblock=%d.", __FUNCTION__, count, noblock);
 
-        down(&uvd->lock);       
+        mutex_lock(&uvd->lock);
 
         /* See if a frame is completed, then use it. */
         for(i = 0; i < USBVIDEO_NUMFRAMES; i++) {
@@ -1644,7 +1643,7 @@ static ssize_t usbvideo_v4l_read(struct file *file, char __user *buf,
                 }
         }
 read_done:
-        up(&uvd->lock); 
+        mutex_unlock(&uvd->lock);
         return count;
 }
 
diff --git a/drivers/usb/media/usbvideo.h b/drivers/usb/media/usbvideo.h
index 6c390a1f981b..135433c2680a 100644
--- a/drivers/usb/media/usbvideo.h
+++ b/drivers/usb/media/usbvideo.h
@@ -19,6 +19,7 @@
 #include <linux/config.h>
 #include <linux/videodev.h>
 #include <linux/usb.h>
+#include <linux/mutex.h>
 
 /* Most helpful debugging aid */
 #define assert(expr) ((void) ((expr) ? 0 : (err("assert failed at line %d",__LINE__))))
@@ -213,7 +214,7 @@ struct uvd {
         unsigned long flags;            /* FLAGS_USBVIDEO_xxx */
         unsigned long paletteBits;      /* Which palettes we accept? */
         unsigned short defaultPalette;  /* What palette to use for read() */
-        struct semaphore lock;
+        struct mutex lock;
         int user;               /* user count for exclusive use */
 
         videosize_t videosize;  /* Current setting */
@@ -272,7 +273,7 @@ struct usbvideo {
         int num_cameras;                /* As allocated */
         struct usb_driver usbdrv;       /* Interface to the USB stack */
         char drvName[80];               /* Driver name */
-        struct semaphore lock;          /* Mutex protecting camera structures */
+        struct mutex lock;              /* Mutex protecting camera structures */
         struct usbvideo_cb cb;          /* Table of callbacks (virtual methods) */
         struct video_device vdt;        /* Video device template */
         struct uvd *cam;                        /* Array of camera structures */
diff --git a/drivers/usb/media/vicam.c b/drivers/usb/media/vicam.c
index 5df144073871..1d06e53ec7c5 100644
--- a/drivers/usb/media/vicam.c
+++ b/drivers/usb/media/vicam.c
@@ -42,6 +42,7 @@
 #include <linux/vmalloc.h>
 #include <linux/slab.h>
 #include <linux/proc_fs.h>
+#include <linux/mutex.h>
 #include "usbvideo.h"
 
 // #define VICAM_DEBUG
@@ -407,7 +408,7 @@ struct vicam_camera {
         struct usb_device *udev;        // usb device
 
         /* guard against simultaneous accesses to the camera */
-        struct semaphore cam_lock;
+        struct mutex cam_lock;
 
         int is_initialized;
         u8 open_count;
@@ -461,12 +462,12 @@ static int send_control_msg(struct vicam_camera *cam,
                             u16 size)
 {
         int status = -ENODEV;
-        down(&cam->cam_lock);
+        mutex_lock(&cam->cam_lock);
         if (cam->udev) {
                 status = __send_control_msg(cam, request, value,
                                             index, cp, size);
         }
-        up(&cam->cam_lock);
+        mutex_unlock(&cam->cam_lock);
         return status;
 }
 static int
@@ -763,6 +764,7 @@ vicam_open(struct inode *inode, struct file *file)
         if (!cam) {
                 printk(KERN_ERR
                        "vicam video_device improperly initialized");
+                return -EINVAL;
         }
 
         /* the videodev_lock held above us protects us from
@@ -831,13 +833,13 @@ vicam_close(struct inode *inode, struct file *file)
         rvfree(cam->framebuf, VICAM_MAX_FRAME_SIZE * VICAM_FRAMES);
         kfree(cam->cntrlbuf);
 
-        down(&cam->cam_lock);
+        mutex_lock(&cam->cam_lock);
 
         cam->open_count--;
         open_count = cam->open_count;
         udev = cam->udev;
 
-        up(&cam->cam_lock);
+        mutex_unlock(&cam->cam_lock);
 
         if (!open_count && !udev) {
                 kfree(cam);
@@ -960,7 +962,7 @@ read_frame(struct vicam_camera *cam, int framenum)
         request[8] = 0;
         // bytes 9-15 do not seem to affect exposure or image quality
 
-        down(&cam->cam_lock);
+        mutex_lock(&cam->cam_lock);
 
         if (!cam->udev) {
                 goto done;
@@ -985,7 +987,7 @@ read_frame(struct vicam_camera *cam, int framenum)
         }
 
  done:
-        up(&cam->cam_lock);
+        mutex_unlock(&cam->cam_lock);
 }
 
 static ssize_t
@@ -1309,7 +1311,7 @@ vicam_probe( struct usb_interface *intf, const struct usb_device_id *id)
 
         cam->shutter_speed = 15;
 
-        init_MUTEX(&cam->cam_lock);
+        mutex_init(&cam->cam_lock);
 
         memcpy(&cam->vdev, &vicam_template,
                sizeof (vicam_template));
@@ -1351,7 +1353,7 @@ vicam_disconnect(struct usb_interface *intf)
 
         /* stop the camera from being used */
 
-        down(&cam->cam_lock);
+        mutex_lock(&cam->cam_lock);
 
         /* mark the camera as gone */
 
@@ -1368,7 +1370,7 @@ vicam_disconnect(struct usb_interface *intf)
 
         open_count = cam->open_count;
 
-        up(&cam->cam_lock);
+        mutex_unlock(&cam->cam_lock);
 
         if (!open_count) {
                 kfree(cam);
diff --git a/drivers/usb/media/w9968cf.c b/drivers/usb/media/w9968cf.c
index 9937fc64c8bf..b57dec3782e0 100644
--- a/drivers/usb/media/w9968cf.c
+++ b/drivers/usb/media/w9968cf.c
@@ -47,6 +47,13 @@
 #include "w9968cf.h"
 #include "w9968cf_decoder.h"
 
+static struct w9968cf_vpp_t* w9968cf_vpp;
+static DECLARE_WAIT_QUEUE_HEAD(w9968cf_vppmod_wait);
+
+static LIST_HEAD(w9968cf_dev_list); /* head of V4L registered cameras list */
+static DEFINE_MUTEX(w9968cf_devlist_mutex); /* semaphore for list traversal */
+
+static DECLARE_RWSEM(w9968cf_disconnect); /* prevent races with open() */
 
 
 /****************************************************************************
@@ -695,13 +702,12 @@ static int w9968cf_allocate_memory(struct w9968cf_device* cam)
         /* Allocate memory for the isochronous transfer buffers */
         for (i = 0; i < W9968CF_URBS; i++) {
                 if (!(cam->transfer_buffer[i] =
-                      kmalloc(W9968CF_ISO_PACKETS*p_size, GFP_KERNEL))) {
+                      kzalloc(W9968CF_ISO_PACKETS*p_size, GFP_KERNEL))) {
                         DBG(1, "Couldn't allocate memory for the isochronous "
                                "transfer buffers (%u bytes)", 
                             p_size * W9968CF_ISO_PACKETS)
                         return -ENOMEM;
                 }
-                memset(cam->transfer_buffer[i], 0, W9968CF_ISO_PACKETS*p_size);
         }
 
         /* Allocate memory for the temporary frame buffer */
@@ -2419,7 +2425,7 @@ w9968cf_configure_camera(struct w9968cf_device* cam,
                          enum w9968cf_model_id mod_id,
                          const unsigned short dev_nr)
 {
-        init_MUTEX(&cam->fileop_sem);
+        mutex_init(&cam->fileop_mutex);
         init_waitqueue_head(&cam->open);
         spin_lock_init(&cam->urb_lock);
         spin_lock_init(&cam->flist_lock);
@@ -2647,7 +2653,7 @@ static void w9968cf_adjust_configuration(struct w9968cf_device* cam)
   --------------------------------------------------------------------------*/
 static void w9968cf_release_resources(struct w9968cf_device* cam)
 {
-        down(&w9968cf_devlist_sem);
+        mutex_lock(&w9968cf_devlist_mutex);
 
         DBG(2, "V4L device deregistered: /dev/video%d", cam->v4ldev->minor)
 
@@ -2658,7 +2664,7 @@ static void w9968cf_release_resources(struct w9968cf_device* cam)
         kfree(cam->control_buffer);
         kfree(cam->data_buffer);
 
-        up(&w9968cf_devlist_sem);
+        mutex_unlock(&w9968cf_devlist_mutex);
 }
 
 
@@ -2678,14 +2684,14 @@ static int w9968cf_open(struct inode* inode, struct file* filp)
 
         cam = (struct w9968cf_device*)video_get_drvdata(video_devdata(filp));
 
-        down(&cam->dev_sem);
+        mutex_lock(&cam->dev_mutex);
 
         if (cam->sensor == CC_UNKNOWN) {
                 DBG(2, "No supported image sensor has been detected by the "
                        "'ovcamchip' module for the %s (/dev/video%d). Make "
                        "sure it is loaded *before* (re)connecting the camera.",
                     symbolic(camlist, cam->id), cam->v4ldev->minor)
-                up(&cam->dev_sem);
+                mutex_unlock(&cam->dev_mutex);
                 up_read(&w9968cf_disconnect);
                 return -ENODEV;
         }
@@ -2694,11 +2700,11 @@ static int w9968cf_open(struct inode* inode, struct file* filp)
                 DBG(2, "%s (/dev/video%d) has been already occupied by '%s'",
                     symbolic(camlist, cam->id),cam->v4ldev->minor,cam->command)
                 if ((filp->f_flags & O_NONBLOCK)||(filp->f_flags & O_NDELAY)) {
-                        up(&cam->dev_sem);
+                        mutex_unlock(&cam->dev_mutex);
                         up_read(&w9968cf_disconnect);
                         return -EWOULDBLOCK;
                 }
-                up(&cam->dev_sem);
+                mutex_unlock(&cam->dev_mutex);
                 err = wait_event_interruptible_exclusive(cam->open,
                                                          cam->disconnected ||
                                                          !cam->users);
@@ -2710,7 +2716,7 @@ static int w9968cf_open(struct inode* inode, struct file* filp)
                         up_read(&w9968cf_disconnect);
                         return -ENODEV;
                 }
-                down(&cam->dev_sem);
+                mutex_lock(&cam->dev_mutex);
         }
 
         DBG(5, "Opening '%s', /dev/video%d ...",
@@ -2739,7 +2745,7 @@ static int w9968cf_open(struct inode* inode, struct file* filp)
 
         DBG(5, "Video device is open")
 
-        up(&cam->dev_sem);
+        mutex_unlock(&cam->dev_mutex);
         up_read(&w9968cf_disconnect);
 
         return 0;
@@ -2747,7 +2753,7 @@ static int w9968cf_open(struct inode* inode, struct file* filp)
 deallocate_memory:
         w9968cf_deallocate_memory(cam);
         DBG(2, "Failed to open the video device")
-        up(&cam->dev_sem);
+        mutex_unlock(&cam->dev_mutex);
         up_read(&w9968cf_disconnect);
         return err;
 }
@@ -2759,13 +2765,13 @@ static int w9968cf_release(struct inode* inode, struct file* filp)
 
         cam = (struct w9968cf_device*)video_get_drvdata(video_devdata(filp));
 
-        down(&cam->dev_sem); /* prevent disconnect() to be called */
+        mutex_lock(&cam->dev_mutex); /* prevent disconnect() to be called */
 
         w9968cf_stop_transfer(cam);
 
         if (cam->disconnected) {
                 w9968cf_release_resources(cam);
-                up(&cam->dev_sem);
+                mutex_unlock(&cam->dev_mutex);
                 kfree(cam);
                 return 0;
         }
@@ -2775,7 +2781,7 @@ static int w9968cf_release(struct inode* inode, struct file* filp)
         wake_up_interruptible_nr(&cam->open, 1);
 
         DBG(5, "Video device closed")
-        up(&cam->dev_sem);
+        mutex_unlock(&cam->dev_mutex);
         return 0;
 }
 
@@ -2792,18 +2798,18 @@ w9968cf_read(struct file* filp, char __user * buf, size_t count, loff_t* f_pos)
         if (filp->f_flags & O_NONBLOCK)
                 return -EWOULDBLOCK;
 
-        if (down_interruptible(&cam->fileop_sem))
+        if (mutex_lock_interruptible(&cam->fileop_mutex))
                 return -ERESTARTSYS;
 
         if (cam->disconnected) {
                 DBG(2, "Device not present")
-                up(&cam->fileop_sem);
+                mutex_unlock(&cam->fileop_mutex);
                 return -ENODEV;
         }
 
         if (cam->misconfigured) {
                 DBG(2, "The camera is misconfigured. Close and open it again.")
-                up(&cam->fileop_sem);
+                mutex_unlock(&cam->fileop_mutex);
                 return -EIO;
         }
 
@@ -2818,11 +2824,11 @@ w9968cf_read(struct file* filp, char __user * buf, size_t count, loff_t* f_pos)
                                        cam->frame[1].status == F_READY ||
                                        cam->disconnected);
         if (err) {
-                up(&cam->fileop_sem);
+                mutex_unlock(&cam->fileop_mutex);
                 return err;
         }
         if (cam->disconnected) {
-                up(&cam->fileop_sem);
+                mutex_unlock(&cam->fileop_mutex);
                 return -ENODEV;
         }
 
@@ -2836,7 +2842,7 @@ w9968cf_read(struct file* filp, char __user * buf, size_t count, loff_t* f_pos)
 
         if (copy_to_user(buf, fr->buffer, count)) {
                 fr->status = F_UNUSED;
-                up(&cam->fileop_sem);
+                mutex_unlock(&cam->fileop_mutex);
                 return -EFAULT;
         }
         *f_pos += count;
@@ -2845,7 +2851,7 @@ w9968cf_read(struct file* filp, char __user * buf, size_t count, loff_t* f_pos)
 
         DBG(5, "%zu bytes read", count)
 
-        up(&cam->fileop_sem);
+        mutex_unlock(&cam->fileop_mutex);
         return count;
 }
 
@@ -2899,24 +2905,24 @@ w9968cf_ioctl(struct inode* inode, struct file* filp,
 
         cam = (struct w9968cf_device*)video_get_drvdata(video_devdata(filp));
 
-        if (down_interruptible(&cam->fileop_sem))
+        if (mutex_lock_interruptible(&cam->fileop_mutex))
                 return -ERESTARTSYS;
 
         if (cam->disconnected) {
                 DBG(2, "Device not present")
-                up(&cam->fileop_sem);
+                mutex_unlock(&cam->fileop_mutex);
                 return -ENODEV;
         }
 
         if (cam->misconfigured) {
                 DBG(2, "The camera is misconfigured. Close and open it again.")
-                up(&cam->fileop_sem);
+                mutex_unlock(&cam->fileop_mutex);
                 return -EIO;
         }
 
         err = w9968cf_v4l_ioctl(inode, filp, cmd, (void __user *)arg);
 
-        up(&cam->fileop_sem);
+        mutex_unlock(&cam->fileop_mutex);
         return err;
 }
 
@@ -3499,14 +3505,12 @@ w9968cf_usb_probe(struct usb_interface* intf, const struct usb_device_id* id)
                 return -ENODEV;
 
         cam = (struct w9968cf_device*)
-                  kmalloc(sizeof(struct w9968cf_device), GFP_KERNEL);
+                  kzalloc(sizeof(struct w9968cf_device), GFP_KERNEL);
         if (!cam)
                 return -ENOMEM;
 
-        memset(cam, 0, sizeof(*cam));
-
-        init_MUTEX(&cam->dev_sem);
-        down(&cam->dev_sem);
+        mutex_init(&cam->dev_mutex);
+        mutex_lock(&cam->dev_mutex);
 
         cam->usbdev = udev;
         /* NOTE: a local copy is used to avoid possible race conditions */
@@ -3518,10 +3522,10 @@ w9968cf_usb_probe(struct usb_interface* intf, const struct usb_device_id* id)
                 simcams = W9968CF_SIMCAMS;
 
         /* How many cameras are connected ? */
-        down(&w9968cf_devlist_sem);
+        mutex_lock(&w9968cf_devlist_mutex);
         list_for_each(ptr, &w9968cf_dev_list)
                 sc++;
-        up(&w9968cf_devlist_sem);
+        mutex_unlock(&w9968cf_devlist_mutex);
 
         if (sc >= simcams) {
                 DBG(2, "Device rejected: too many connected cameras "
@@ -3532,21 +3536,19 @@ w9968cf_usb_probe(struct usb_interface* intf, const struct usb_device_id* id)
 
 
         /* Allocate 2 bytes of memory for camera control USB transfers */
-        if (!(cam->control_buffer = kmalloc(2, GFP_KERNEL))) {
+        if (!(cam->control_buffer = kzalloc(2, GFP_KERNEL))) {
                 DBG(1,"Couldn't allocate memory for camera control transfers")
                 err = -ENOMEM;
                 goto fail;
         }
-        memset(cam->control_buffer, 0, 2);
 
         /* Allocate 8 bytes of memory for USB data transfers to the FSB */
-        if (!(cam->data_buffer = kmalloc(8, GFP_KERNEL))) {
+        if (!(cam->data_buffer = kzalloc(8, GFP_KERNEL))) {
                 DBG(1, "Couldn't allocate memory for data "
                        "transfers to the FSB")
                 err = -ENOMEM;
                 goto fail;
         }
-        memset(cam->data_buffer, 0, 8);
 
         /* Register the V4L device */
         cam->v4ldev = video_device_alloc();
@@ -3583,9 +3585,9 @@ w9968cf_usb_probe(struct usb_interface* intf, const struct usb_device_id* id)
         w9968cf_configure_camera(cam, udev, mod_id, dev_nr);
 
         /* Add a new entry into the list of V4L registered devices */
-        down(&w9968cf_devlist_sem);
+        mutex_lock(&w9968cf_devlist_mutex);
         list_add(&cam->v4llist, &w9968cf_dev_list);
-        up(&w9968cf_devlist_sem);
+        mutex_unlock(&w9968cf_devlist_mutex);
         dev_nr = (dev_nr < W9968CF_MAX_DEVICES-1) ? dev_nr+1 : 0;
 
         w9968cf_turn_on_led(cam);
@@ -3593,7 +3595,7 @@ w9968cf_usb_probe(struct usb_interface* intf, const struct usb_device_id* id)
         w9968cf_i2c_init(cam);
 
         usb_set_intfdata(intf, cam);
-        up(&cam->dev_sem);
+        mutex_unlock(&cam->dev_mutex);
         return 0;
 
 fail: /* Free unused memory */
@@ -3601,7 +3603,7 @@ fail: /* Free unused memory */
         kfree(cam->data_buffer);
         if (cam->v4ldev)
                 video_device_release(cam->v4ldev);
-        up(&cam->dev_sem);
+        mutex_unlock(&cam->dev_mutex);
         kfree(cam);
         return err;
 }
@@ -3616,7 +3618,7 @@ static void w9968cf_usb_disconnect(struct usb_interface* intf)
 
         if (cam) {
                 /* Prevent concurrent accesses to data */
-                down(&cam->dev_sem); 
+                mutex_lock(&cam->dev_mutex);
 
                 cam->disconnected = 1;
 
@@ -3635,7 +3637,7 @@ static void w9968cf_usb_disconnect(struct usb_interface* intf)
                 } else
                         w9968cf_release_resources(cam);
 
-                up(&cam->dev_sem);
+                mutex_unlock(&cam->dev_mutex);
 
                 if (!cam->users)
                         kfree(cam);
diff --git a/drivers/usb/media/w9968cf.h b/drivers/usb/media/w9968cf.h
index 47a6ff794171..a87be719a281 100644
--- a/drivers/usb/media/w9968cf.h
+++ b/drivers/usb/media/w9968cf.h
@@ -32,7 +32,7 @@
 #include <linux/param.h>
 #include <linux/types.h>
 #include <linux/rwsem.h>
-#include <asm/semaphore.h>
+#include <linux/mutex.h>
 
 #include <media/ovcamchip.h>
 
@@ -194,14 +194,6 @@ enum w9968cf_vpp_flag {
         VPP_UYVY_TO_RGBX = 0x08,
 };
 
-static struct w9968cf_vpp_t* w9968cf_vpp;
-static DECLARE_WAIT_QUEUE_HEAD(w9968cf_vppmod_wait);
-
-static LIST_HEAD(w9968cf_dev_list); /* head of V4L registered cameras list */
-static DECLARE_MUTEX(w9968cf_devlist_sem); /* semaphore for list traversal */
-
-static DECLARE_RWSEM(w9968cf_disconnect); /* prevent races with open() */
-
 /* Main device driver structure */
 struct w9968cf_device {
         struct device dev; /* device structure */
@@ -277,8 +269,8 @@ struct w9968cf_device {
         struct i2c_client* sensor_client;
 
         /* Locks */
-        struct semaphore dev_sem,    /* for probe, disconnect,open and close */
-                         fileop_sem; /* for read and ioctl */
+        struct mutex dev_mutex,    /* for probe, disconnect,open and close */
+                         fileop_mutex; /* for read and ioctl */
         spinlock_t urb_lock,   /* for submit_urb() and unlink_urb() */
                    flist_lock; /* for requested frame list accesses */
         wait_queue_head_t open, wait_queue;
diff --git a/drivers/usb/media/zc0301.h b/drivers/usb/media/zc0301.h
new file mode 100644
index 000000000000..8e0655140e60
--- /dev/null
+++ b/drivers/usb/media/zc0301.h
@@ -0,0 +1,192 @@
+/***************************************************************************
+ * V4L2 driver for ZC0301 Image Processor and Control Chip                 *
+ *                                                                         *
+ * Copyright (C) 2006 by Luca Risolia <luca.risolia@studio.unibo.it>       *
+ *                                                                         *
+ * This program is free software; you can redistribute it and/or modify    *
+ * it under the terms of the GNU General Public License as published by    *
+ * the Free Software Foundation; either version 2 of the License, or       *
+ * (at your option) any later version.                                     *
+ *                                                                         *
+ * This program is distributed in the hope that it will be useful,         *
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of          *
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           *
+ * GNU General Public License for more details.                            *
+ *                                                                         *
+ * You should have received a copy of the GNU General Public License       *
+ * along with this program; if not, write to the Free Software             *
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.               *
+ ***************************************************************************/
+
+#ifndef _ZC0301_H_
+#define _ZC0301_H_
+
+#include <linux/version.h>
+#include <linux/usb.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-common.h>
+#include <linux/device.h>
+#include <linux/list.h>
+#include <linux/spinlock.h>
+#include <linux/time.h>
+#include <linux/wait.h>
+#include <linux/types.h>
+#include <linux/param.h>
+#include <linux/mutex.h>
+#include <linux/rwsem.h>
+#include <linux/stddef.h>
+#include <linux/string.h>
+
+#include "zc0301_sensor.h"
+
+/*****************************************************************************/
+
+#define ZC0301_DEBUG
+#define ZC0301_DEBUG_LEVEL         2
+#define ZC0301_MAX_DEVICES         64
+#define ZC0301_FORCE_MUNMAP        0
+#define ZC0301_MAX_FRAMES          32
+#define ZC0301_COMPRESSION_QUALITY 0
+#define ZC0301_URBS                2
+#define ZC0301_ISO_PACKETS         7
+#define ZC0301_ALTERNATE_SETTING   7
+#define ZC0301_URB_TIMEOUT         msecs_to_jiffies(2 * ZC0301_ISO_PACKETS)
+#define ZC0301_CTRL_TIMEOUT        100
+#define ZC0301_FRAME_TIMEOUT       2
+
+/*****************************************************************************/
+
+ZC0301_ID_TABLE
+ZC0301_SENSOR_TABLE
+
+enum zc0301_frame_state {
+        F_UNUSED,
+        F_QUEUED,
+        F_GRABBING,
+        F_DONE,
+        F_ERROR,
+};
+
+struct zc0301_frame_t {
+        void* bufmem;
+        struct v4l2_buffer buf;
+        enum zc0301_frame_state state;
+        struct list_head frame;
+        unsigned long vma_use_count;
+};
+
+enum zc0301_dev_state {
+        DEV_INITIALIZED = 0x01,
+        DEV_DISCONNECTED = 0x02,
+        DEV_MISCONFIGURED = 0x04,
+};
+
+enum zc0301_io_method {
+        IO_NONE,
+        IO_READ,
+        IO_MMAP,
+};
+
+enum zc0301_stream_state {
+        STREAM_OFF,
+        STREAM_INTERRUPT,
+        STREAM_ON,
+};
+
+struct zc0301_module_param {
+        u8 force_munmap;
+        u16 frame_timeout;
+};
+
+static DECLARE_RWSEM(zc0301_disconnect);
+
+struct zc0301_device {
+        struct video_device* v4ldev;
+
+        struct zc0301_sensor sensor;
+
+        struct usb_device* usbdev;
+        struct urb* urb[ZC0301_URBS];
+        void* transfer_buffer[ZC0301_URBS];
+        u8* control_buffer;
+
+        struct zc0301_frame_t *frame_current, frame[ZC0301_MAX_FRAMES];
+        struct list_head inqueue, outqueue;
+        u32 frame_count, nbuffers, nreadbuffers;
+
+        enum zc0301_io_method io;
+        enum zc0301_stream_state stream;
+
+        struct v4l2_jpegcompression compression;
+
+        struct zc0301_module_param module_param;
+
+        enum zc0301_dev_state state;
+        u8 users;
+
+        struct mutex dev_mutex, fileop_mutex;
+        spinlock_t queue_lock;
+        wait_queue_head_t open, wait_frame, wait_stream;
+};
+
+/*****************************************************************************/
+
+struct zc0301_device*
+zc0301_match_id(struct zc0301_device* cam, const struct usb_device_id *id)
+{
+        return usb_match_id(usb_ifnum_to_if(cam->usbdev, 0), id) ? cam : NULL;
+}
+
+void
+zc0301_attach_sensor(struct zc0301_device* cam, struct zc0301_sensor* sensor)
+{
+        memcpy(&cam->sensor, sensor, sizeof(struct zc0301_sensor));
+}
+
+/*****************************************************************************/
+
+#undef DBG
+#undef KDBG
+#ifdef ZC0301_DEBUG
+#       define DBG(level, fmt, args...)                                       \
+do {                                                                          \
+        if (debug >= (level)) {                                               \
+                if ((level) == 1)                                             \
+                        dev_err(&cam->usbdev->dev, fmt "\n", ## args);        \
+                else if ((level) == 2)                                        \
+                        dev_info(&cam->usbdev->dev, fmt "\n", ## args);       \
+                else if ((level) >= 3)                                        \
+                        dev_info(&cam->usbdev->dev, "[%s:%d] " fmt "\n",      \
+                                 __FUNCTION__, __LINE__ , ## args);           \
+        }                                                                     \
+} while (0)
+#       define KDBG(level, fmt, args...)                                      \
+do {                                                                          \
+        if (debug >= (level)) {                                               \
+                if ((level) == 1 || (level) == 2)                             \
+                        pr_info("zc0301: " fmt "\n", ## args);                \
+                else if ((level) == 3)                                        \
+                        pr_debug("zc0301: [%s:%d] " fmt "\n", __FUNCTION__,   \
+                                 __LINE__ , ## args);                         \
+        }                                                                     \
+} while (0)
+#       define V4LDBG(level, name, cmd)                                       \
+do {                                                                          \
+        if (debug >= (level))                                                 \
+                v4l_print_ioctl(name, cmd);                                   \
+} while (0)
+#else
+#       define DBG(level, fmt, args...) do {;} while(0)
+#       define KDBG(level, fmt, args...) do {;} while(0)
+#       define V4LDBG(level, name, cmd) do {;} while(0)
+#endif
+
+#undef PDBG
+#define PDBG(fmt, args...)                                                    \
+dev_info(&cam->usbdev->dev, "[%s:%d] " fmt "\n",                              \
+         __FUNCTION__, __LINE__ , ## args)
+
+#undef PDBGG
+#define PDBGG(fmt, args...) do {;} while(0) /* placeholder */
+
+#endif /* _ZC0301_H_ */
diff --git a/drivers/usb/media/zc0301_core.c b/drivers/usb/media/zc0301_core.c
new file mode 100644
index 000000000000..4036c6268bff
--- /dev/null
+++ b/drivers/usb/media/zc0301_core.c
@@ -0,0 +1,2055 @@
+/***************************************************************************
+ * Video4Linux2 driver for ZC0301 Image Processor and Control Chip         *
+ *                                                                         *
+ * Copyright (C) 2006 by Luca Risolia <luca.risolia@studio.unibo.it>       *
+ *                                                                         *
+ * Informations about the chip internals needed to enable the I2C protocol *
+ * have been taken from the documentation of the ZC030x Video4Linux1       *
+ * driver written by Andrew Birkett <andy@nobugs.org>                      *
+ *                                                                         *
+ * This program is free software; you can redistribute it and/or modify    *
+ * it under the terms of the GNU General Public License as published by    *
+ * the Free Software Foundation; either version 2 of the License, or       *
+ * (at your option) any later version.                                     *
+ *                                                                         *
+ * This program is distributed in the hope that it will be useful,         *
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of          *
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           *
+ * GNU General Public License for more details.                            *
+ *                                                                         *
+ * You should have received a copy of the GNU General Public License       *
+ * along with this program; if not, write to the Free Software             *
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.               *
+ ***************************************************************************/
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/param.h>
+#include <linux/moduleparam.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/device.h>
+#include <linux/fs.h>
+#include <linux/delay.h>
+#include <linux/compiler.h>
+#include <linux/ioctl.h>
+#include <linux/poll.h>
+#include <linux/stat.h>
+#include <linux/mm.h>
+#include <linux/vmalloc.h>
+#include <linux/page-flags.h>
+#include <linux/byteorder/generic.h>
+#include <asm/page.h>
+#include <asm/uaccess.h>
+
+#include "zc0301.h"
+
+/*****************************************************************************/
+
+#define ZC0301_MODULE_NAME    "V4L2 driver for ZC0301 "                       \
+                              "Image Processor and Control Chip"
+#define ZC0301_MODULE_AUTHOR  "(C) 2006 Luca Risolia"
+#define ZC0301_AUTHOR_EMAIL   "<luca.risolia@studio.unibo.it>"
+#define ZC0301_MODULE_LICENSE "GPL"
+#define ZC0301_MODULE_VERSION "1:1.03"
+#define ZC0301_MODULE_VERSION_CODE  KERNEL_VERSION(1, 0, 3)
+
+/*****************************************************************************/
+
+MODULE_DEVICE_TABLE(usb, zc0301_id_table);
+
+MODULE_AUTHOR(ZC0301_MODULE_AUTHOR " " ZC0301_AUTHOR_EMAIL);
+MODULE_DESCRIPTION(ZC0301_MODULE_NAME);
+MODULE_VERSION(ZC0301_MODULE_VERSION);
+MODULE_LICENSE(ZC0301_MODULE_LICENSE);
+
+static short video_nr[] = {[0 ... ZC0301_MAX_DEVICES-1] = -1};
+module_param_array(video_nr, short, NULL, 0444);
+MODULE_PARM_DESC(video_nr,
+                 "\n<-1|n[,...]> Specify V4L2 minor mode number."
+                 "\n -1 = use next available (default)"
+                 "\n  n = use minor number n (integer >= 0)"
+                 "\nYou can specify up to "
+                 __MODULE_STRING(ZC0301_MAX_DEVICES) " cameras this way."
+                 "\nFor example:"
+                 "\nvideo_nr=-1,2,-1 would assign minor number 2 to"
+                 "\nthe second registered camera and use auto for the first"
+                 "\none and for every other camera."
+                 "\n");
+
+static short force_munmap[] = {[0 ... ZC0301_MAX_DEVICES-1] =
+                               ZC0301_FORCE_MUNMAP};
+module_param_array(force_munmap, bool, NULL, 0444);
+MODULE_PARM_DESC(force_munmap,
+                 "\n<0|1[,...]> Force the application to unmap previously"
+                 "\nmapped buffer memory before calling any VIDIOC_S_CROP or"
+                 "\nVIDIOC_S_FMT ioctl's. Not all the applications support"
+                 "\nthis feature. This parameter is specific for each"
+                 "\ndetected camera."
+                 "\n 0 = do not force memory unmapping"
+                 "\n 1 = force memory unmapping (save memory)"
+                 "\nDefault value is "__MODULE_STRING(SN9C102_FORCE_MUNMAP)"."
+                 "\n");
+
+static unsigned int frame_timeout[] = {[0 ... ZC0301_MAX_DEVICES-1] =
+                                       ZC0301_FRAME_TIMEOUT};
+module_param_array(frame_timeout, uint, NULL, 0644);
+MODULE_PARM_DESC(frame_timeout,
+                 "\n<n[,...]> Timeout for a video frame in seconds."
+                 "\nThis parameter is specific for each detected camera."
+                 "\nDefault value is "__MODULE_STRING(ZC0301_FRAME_TIMEOUT)"."
+                 "\n");
+
+#ifdef ZC0301_DEBUG
+static unsigned short debug = ZC0301_DEBUG_LEVEL;
+module_param(debug, ushort, 0644);
+MODULE_PARM_DESC(debug,
+                 "\n<n> Debugging information level, from 0 to 3:"
+                 "\n0 = none (use carefully)"
+                 "\n1 = critical errors"
+                 "\n2 = significant informations"
+                 "\n3 = more verbose messages"
+                 "\nLevel 3 is useful for testing only, when only "
+                 "one device is used."
+                 "\nDefault value is "__MODULE_STRING(ZC0301_DEBUG_LEVEL)"."
+                 "\n");
+#endif
+
+/*****************************************************************************/
+
+static u32
+zc0301_request_buffers(struct zc0301_device* cam, u32 count,
+                       enum zc0301_io_method io)
+{
+        struct v4l2_pix_format* p = &(cam->sensor.pix_format);
+        struct v4l2_rect* r = &(cam->sensor.cropcap.bounds);
+        const size_t imagesize = cam->module_param.force_munmap ||
+                                 io == IO_READ ?
+                                 (p->width * p->height * p->priv) / 8 :
+                                 (r->width * r->height * p->priv) / 8;
+        void* buff = NULL;
+        u32 i;
+
+        if (count > ZC0301_MAX_FRAMES)
+                count = ZC0301_MAX_FRAMES;
+
+        cam->nbuffers = count;
+        while (cam->nbuffers > 0) {
+                if ((buff = vmalloc_32(cam->nbuffers * PAGE_ALIGN(imagesize))))
+                        break;
+                cam->nbuffers--;
+        }
+
+        for (i = 0; i < cam->nbuffers; i++) {
+                cam->frame[i].bufmem = buff + i*PAGE_ALIGN(imagesize);
+                cam->frame[i].buf.index = i;
+                cam->frame[i].buf.m.offset = i*PAGE_ALIGN(imagesize);
+                cam->frame[i].buf.length = imagesize;
+                cam->frame[i].buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+                cam->frame[i].buf.sequence = 0;
+                cam->frame[i].buf.field = V4L2_FIELD_NONE;
+                cam->frame[i].buf.memory = V4L2_MEMORY_MMAP;
+                cam->frame[i].buf.flags = 0;
+        }
+
+        return cam->nbuffers;
+}
+
+
+static void zc0301_release_buffers(struct zc0301_device* cam)
+{
+        if (cam->nbuffers) {
+                vfree(cam->frame[0].bufmem);
+                cam->nbuffers = 0;
+        }
+        cam->frame_current = NULL;
+}
+
+
+static void zc0301_empty_framequeues(struct zc0301_device* cam)
+{
+        u32 i;
+
+        INIT_LIST_HEAD(&cam->inqueue);
+        INIT_LIST_HEAD(&cam->outqueue);
+
+        for (i = 0; i < ZC0301_MAX_FRAMES; i++) {
+                cam->frame[i].state = F_UNUSED;
+                cam->frame[i].buf.bytesused = 0;
+        }
+}
+
+
+static void zc0301_requeue_outqueue(struct zc0301_device* cam)
+{
+        struct zc0301_frame_t *i;
+
+        list_for_each_entry(i, &cam->outqueue, frame) {
+                i->state = F_QUEUED;
+                list_add(&i->frame, &cam->inqueue);
+        }
+
+        INIT_LIST_HEAD(&cam->outqueue);
+}
+
+
+static void zc0301_queue_unusedframes(struct zc0301_device* cam)
+{
+        unsigned long lock_flags;
+        u32 i;
+
+        for (i = 0; i < cam->nbuffers; i++)
+                if (cam->frame[i].state == F_UNUSED) {
+                        cam->frame[i].state = F_QUEUED;
+                        spin_lock_irqsave(&cam->queue_lock, lock_flags);
+                        list_add_tail(&cam->frame[i].frame, &cam->inqueue);
+                        spin_unlock_irqrestore(&cam->queue_lock, lock_flags);
+                }
+}
+
+/*****************************************************************************/
+
+int zc0301_write_reg(struct zc0301_device* cam, u16 index, u16 value)
+{
+        struct usb_device* udev = cam->usbdev;
+        int res;
+
+        res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0xa0, 0x40,
+                              value, index, NULL, 0, ZC0301_CTRL_TIMEOUT);
+        if (res < 0) {
+                DBG(3, "Failed to write a register (index 0x%04X, "
+                       "value 0x%02X, error %d)",index, value, res);
+                return -1;
+        }
+
+        return 0;
+}
+
+
+int zc0301_read_reg(struct zc0301_device* cam, u16 index)
+{
+        struct usb_device* udev = cam->usbdev;
+        u8* buff = cam->control_buffer;
+        int res;
+
+        res = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0xa1, 0xc0,
+                              0x0001, index, buff, 1, ZC0301_CTRL_TIMEOUT);
+        if (res < 0)
+                DBG(3, "Failed to read a register (index 0x%04X, error %d)",
+                    index, res);
+
+        PDBGG("Read: index 0x%04X, value: 0x%04X", index, (int)(*buff));
+
+        return (res >= 0) ? (int)(*buff) : -1;
+}
+
+
+int zc0301_i2c_read(struct zc0301_device* cam, u16 address, u8 length)
+{
+        int err = 0, res, r0, r1;
+
+        err += zc0301_write_reg(cam, 0x0092, address);
+        err += zc0301_write_reg(cam, 0x0090, 0x02);
+
+        msleep(1);
+
+        res = zc0301_read_reg(cam, 0x0091);
+        if (res < 0)
+                err += res;
+        r0 = zc0301_read_reg(cam, 0x0095);
+        if (r0 < 0)
+                err += r0;
+        r1 = zc0301_read_reg(cam, 0x0096);
+        if (r1 < 0)
+                err += r1;
+
+        res = (length <= 1) ? r0 : r0 | (r1 << 8);
+
+        if (err)
+                DBG(3, "I2C read failed at address 0x%04X, value: 0x%04X",
+                    address, res);
+
+
+        PDBGG("I2C read: address 0x%04X, value: 0x%04X", address, res);
+
+        return err ? -1 : res;
+}
+
+
+int zc0301_i2c_write(struct zc0301_device* cam, u16 address, u16 value)
+{
+        int err = 0, res;
+
+        err += zc0301_write_reg(cam, 0x0092, address);
+        err += zc0301_write_reg(cam, 0x0093, value & 0xff);
+        err += zc0301_write_reg(cam, 0x0094, value >> 8);
+        err += zc0301_write_reg(cam, 0x0090, 0x01);
+
+        msleep(1);
+
+        res = zc0301_read_reg(cam, 0x0091);
+        if (res < 0)
+                err += res;
+
+        if (err)
+                DBG(3, "I2C write failed at address 0x%04X, value: 0x%04X",
+                    address, value);
+
+        PDBGG("I2C write: address 0x%04X, value: 0x%04X", address, value);
+
+        return err ? -1 : 0;
+}
+
+/*****************************************************************************/
+
+static void zc0301_urb_complete(struct urb *urb, struct pt_regs* regs)
+{
+        struct zc0301_device* cam = urb->context;
+        struct zc0301_frame_t** f;
+        size_t imagesize;
+        u8 i;
+        int err = 0;
+
+        if (urb->status == -ENOENT)
+                return;
+
+        f = &cam->frame_current;
+
+        if (cam->stream == STREAM_INTERRUPT) {
+                cam->stream = STREAM_OFF;
+                if ((*f))
+                        (*f)->state = F_QUEUED;
+                DBG(3, "Stream interrupted");
+                wake_up(&cam->wait_stream);
+        }
+
+        if (cam->state & DEV_DISCONNECTED)
+                return;
+
+        if (cam->state & DEV_MISCONFIGURED) {
+                wake_up_interruptible(&cam->wait_frame);
+                return;
+        }
+
+        if (cam->stream == STREAM_OFF || list_empty(&cam->inqueue))
+                goto resubmit_urb;
+
+        if (!(*f))
+                (*f) = list_entry(cam->inqueue.next, struct zc0301_frame_t,
+                                  frame);
+
+        imagesize = (cam->sensor.pix_format.width *
+                     cam->sensor.pix_format.height *
+                     cam->sensor.pix_format.priv) / 8;
+
+        for (i = 0; i < urb->number_of_packets; i++) {
+                unsigned int len, status;
+                void *pos;
+                u16* soi;
+                u8 sof;
+
+                len = urb->iso_frame_desc[i].actual_length;
+                status = urb->iso_frame_desc[i].status;
+                pos = urb->iso_frame_desc[i].offset + urb->transfer_buffer;
+
+                if (status) {
+                        DBG(3, "Error in isochronous frame");
+                        (*f)->state = F_ERROR;
+                        continue;
+                }
+
+                sof = (*(soi = pos) == 0xd8ff);
+
+                PDBGG("Isochrnous frame: length %u, #%u i,", len, i);
+
+                if ((*f)->state == F_QUEUED || (*f)->state == F_ERROR)
+start_of_frame:
+                        if (sof) {
+                                (*f)->state = F_GRABBING;
+                                (*f)->buf.bytesused = 0;
+                                do_gettimeofday(&(*f)->buf.timestamp);
+                                DBG(3, "SOF detected: new video frame");
+                        }
+
+                if ((*f)->state == F_GRABBING) {
+                        if (sof && (*f)->buf.bytesused)
+                                        goto end_of_frame;
+
+                        if ((*f)->buf.bytesused + len > imagesize) {
+                                DBG(3, "Video frame size exceeded");
+                                (*f)->state = F_ERROR;
+                                continue;
+                        }
+
+                        memcpy((*f)->bufmem+(*f)->buf.bytesused, pos, len);
+                        (*f)->buf.bytesused += len;
+
+                        if ((*f)->buf.bytesused == imagesize) {
+                                u32 b;
+end_of_frame:
+                                b = (*f)->buf.bytesused;
+                                (*f)->state = F_DONE;
+                                (*f)->buf.sequence= ++cam->frame_count;
+                                spin_lock(&cam->queue_lock);
+                                list_move_tail(&(*f)->frame, &cam->outqueue);
+                                if (!list_empty(&cam->inqueue))
+                                        (*f) = list_entry(cam->inqueue.next,
+                                                       struct zc0301_frame_t,
+                                                          frame);
+                                else
+                                        (*f) = NULL;
+                                spin_unlock(&cam->queue_lock);
+                                DBG(3, "Video frame captured: : %lu bytes",
+                                       (unsigned long)(b));
+
+                                if (!(*f))
+                                        goto resubmit_urb;
+
+                                if (sof)
+                                        goto start_of_frame;
+                        }
+                }
+        }
+
+resubmit_urb:
+        urb->dev = cam->usbdev;
+        err = usb_submit_urb(urb, GFP_ATOMIC);
+        if (err < 0 && err != -EPERM) {
+                cam->state |= DEV_MISCONFIGURED;
+                DBG(1, "usb_submit_urb() failed");
+        }
+
+        wake_up_interruptible(&cam->wait_frame);
+}
+
+
+static int zc0301_start_transfer(struct zc0301_device* cam)
+{
+        struct usb_device *udev = cam->usbdev;
+        struct urb* urb;
+        const unsigned int wMaxPacketSize[] = {0, 128, 192, 256, 384,
+                                               512, 768, 1023};
+        const unsigned int psz = wMaxPacketSize[ZC0301_ALTERNATE_SETTING];
+        s8 i, j;
+        int err = 0;
+
+        for (i = 0; i < ZC0301_URBS; i++) {
+                cam->transfer_buffer[i] = kzalloc(ZC0301_ISO_PACKETS * psz,
+                                                  GFP_KERNEL);
+                if (!cam->transfer_buffer[i]) {
+                        err = -ENOMEM;
+                        DBG(1, "Not enough memory");
+                        goto free_buffers;
+                }
+        }
+
+        for (i = 0; i < ZC0301_URBS; i++) {
+                urb = usb_alloc_urb(ZC0301_ISO_PACKETS, GFP_KERNEL);
+                cam->urb[i] = urb;
+                if (!urb) {
+                        err = -ENOMEM;
+                        DBG(1, "usb_alloc_urb() failed");
+                        goto free_urbs;
+                }
+                urb->dev = udev;
+                urb->context = cam;
+                urb->pipe = usb_rcvisocpipe(udev, 1);
+                urb->transfer_flags = URB_ISO_ASAP;
+                urb->number_of_packets = ZC0301_ISO_PACKETS;
+                urb->complete = zc0301_urb_complete;
+                urb->transfer_buffer = cam->transfer_buffer[i];
+                urb->transfer_buffer_length = psz * ZC0301_ISO_PACKETS;
+                urb->interval = 1;
+                for (j = 0; j < ZC0301_ISO_PACKETS; j++) {
+                        urb->iso_frame_desc[j].offset = psz * j;
+                        urb->iso_frame_desc[j].length = psz;
+                }
+        }
+
+        err = usb_set_interface(udev, 0, ZC0301_ALTERNATE_SETTING);
+        if (err) {
+                DBG(1, "usb_set_interface() failed");
+                goto free_urbs;
+        }
+
+        cam->frame_current = NULL;
+
+        for (i = 0; i < ZC0301_URBS; i++) {
+                err = usb_submit_urb(cam->urb[i], GFP_KERNEL);
+                if (err) {
+                        for (j = i-1; j >= 0; j--)
+                                usb_kill_urb(cam->urb[j]);
+                        DBG(1, "usb_submit_urb() failed, error %d", err);
+                        goto free_urbs;
+                }
+        }
+
+        return 0;
+
+free_urbs:
+        for (i = 0; (i < ZC0301_URBS) &&  cam->urb[i]; i++)
+                usb_free_urb(cam->urb[i]);
+
+free_buffers:
+        for (i = 0; (i < ZC0301_URBS) && cam->transfer_buffer[i]; i++)
+                kfree(cam->transfer_buffer[i]);
+
+        return err;
+}
+
+
+static int zc0301_stop_transfer(struct zc0301_device* cam)
+{
+        struct usb_device *udev = cam->usbdev;
+        s8 i;
+        int err = 0;
+
+        if (cam->state & DEV_DISCONNECTED)
+                return 0;
+
+        for (i = ZC0301_URBS-1; i >= 0; i--) {
+                usb_kill_urb(cam->urb[i]);
+                usb_free_urb(cam->urb[i]);
+                kfree(cam->transfer_buffer[i]);
+        }
+
+        err = usb_set_interface(udev, 0, 0); /* 0 Mb/s */
+        if (err)
+                DBG(3, "usb_set_interface() failed");
+
+        return err;
+}
+
+
+static int zc0301_stream_interrupt(struct zc0301_device* cam)
+{
+        long timeout;
+
+        cam->stream = STREAM_INTERRUPT;
+        timeout = wait_event_timeout(cam->wait_stream,
+                                     (cam->stream == STREAM_OFF) ||
+                                     (cam->state & DEV_DISCONNECTED),
+                                     ZC0301_URB_TIMEOUT);
+        if (cam->state & DEV_DISCONNECTED)
+                return -ENODEV;
+        else if (cam->stream != STREAM_OFF) {
+                cam->state |= DEV_MISCONFIGURED;
+                DBG(1, "URB timeout reached. The camera is misconfigured. To "
+                       "use it, close and open /dev/video%d again.",
+                    cam->v4ldev->minor);
+                return -EIO;
+        }
+
+        return 0;
+}
+
+/*****************************************************************************/
+
+static int
+zc0301_set_compression(struct zc0301_device* cam,
+                       struct v4l2_jpegcompression* compression)
+{
+        int r, err = 0;
+
+        if ((r = zc0301_read_reg(cam, 0x0008)) < 0)
+                err += r;
+        err += zc0301_write_reg(cam, 0x0008, r | 0x11 | compression->quality);
+
+        return err ? -EIO : 0;
+}
+
+
+static int zc0301_init(struct zc0301_device* cam)
+{
+        struct zc0301_sensor* s = &cam->sensor;
+        struct v4l2_control ctrl;
+        struct v4l2_queryctrl *qctrl;
+        struct v4l2_rect* rect;
+        u8 i = 0;
+        int err = 0;
+
+        if (!(cam->state & DEV_INITIALIZED)) {
+                init_waitqueue_head(&cam->open);
+                qctrl = s->qctrl;
+                rect = &(s->cropcap.defrect);
+                cam->compression.quality = ZC0301_COMPRESSION_QUALITY;
+        } else { /* use current values */
+                qctrl = s->_qctrl;
+                rect = &(s->_rect);
+        }
+
+        if (s->init) {
+                err = s->init(cam);
+                if (err) {
+                        DBG(3, "Sensor initialization failed");
+                        return err;
+                }
+        }
+
+        if ((err = zc0301_set_compression(cam, &cam->compression))) {
+                DBG(3, "set_compression() failed");
+                return err;
+        }
+
+        if (s->set_crop)
+                if ((err = s->set_crop(cam, rect))) {
+                        DBG(3, "set_crop() failed");
+                        return err;
+                }
+
+        if (s->set_ctrl) {
+                for (i = 0; i < ARRAY_SIZE(s->qctrl); i++)
+                        if (s->qctrl[i].id != 0 &&
+                            !(s->qctrl[i].flags & V4L2_CTRL_FLAG_DISABLED)) {
+                                ctrl.id = s->qctrl[i].id;
+                                ctrl.value = qctrl[i].default_value;
+                                err = s->set_ctrl(cam, &ctrl);
+                                if (err) {
+                                        DBG(3, "Set %s control failed",
+                                            s->qctrl[i].name);
+                                        return err;
+                                }
+                                DBG(3, "Image sensor supports '%s' control",
+                                    s->qctrl[i].name);
+                        }
+        }
+
+        if (!(cam->state & DEV_INITIALIZED)) {
+                mutex_init(&cam->fileop_mutex);
+                spin_lock_init(&cam->queue_lock);
+                init_waitqueue_head(&cam->wait_frame);
+                init_waitqueue_head(&cam->wait_stream);
+                cam->nreadbuffers = 2;
+                memcpy(s->_qctrl, s->qctrl, sizeof(s->qctrl));
+                memcpy(&(s->_rect), &(s->cropcap.defrect),
+                       sizeof(struct v4l2_rect));
+                cam->state |= DEV_INITIALIZED;
+        }
+
+        DBG(2, "Initialization succeeded");
+        return 0;
+}
+
+
+static void zc0301_release_resources(struct zc0301_device* cam)
+{
+        DBG(2, "V4L2 device /dev/video%d deregistered", cam->v4ldev->minor);
+        video_set_drvdata(cam->v4ldev, NULL);
+        video_unregister_device(cam->v4ldev);
+        kfree(cam->control_buffer);
+}
+
+/*****************************************************************************/
+
+static int zc0301_open(struct inode* inode, struct file* filp)
+{
+        struct zc0301_device* cam;
+        int err = 0;
+
+        /*
+           This is the only safe way to prevent race conditions with
+           disconnect
+        */
+        if (!down_read_trylock(&zc0301_disconnect))
+                return -ERESTARTSYS;
+
+        cam = video_get_drvdata(video_devdata(filp));
+
+        if (mutex_lock_interruptible(&cam->dev_mutex)) {
+                up_read(&zc0301_disconnect);
+                return -ERESTARTSYS;
+        }
+
+        if (cam->users) {
+                DBG(2, "Device /dev/video%d is busy...", cam->v4ldev->minor);
+                if ((filp->f_flags & O_NONBLOCK) ||
+                    (filp->f_flags & O_NDELAY)) {
+                        err = -EWOULDBLOCK;
+                        goto out;
+                }
+                mutex_unlock(&cam->dev_mutex);
+                err = wait_event_interruptible_exclusive(cam->open,
+                                                  cam->state & DEV_DISCONNECTED
+                                                         || !cam->users);
+                if (err) {
+                        up_read(&zc0301_disconnect);
+                        return err;
+                }
+                if (cam->state & DEV_DISCONNECTED) {
+                        up_read(&zc0301_disconnect);
+                        return -ENODEV;
+                }
+                mutex_lock(&cam->dev_mutex);
+        }
+
+
+        if (cam->state & DEV_MISCONFIGURED) {
+                err = zc0301_init(cam);
+                if (err) {
+                        DBG(1, "Initialization failed again. "
+                               "I will retry on next open().");
+                        goto out;
+                }
+                cam->state &= ~DEV_MISCONFIGURED;
+        }
+
+        if ((err = zc0301_start_transfer(cam)))
+                goto out;
+
+        filp->private_data = cam;
+        cam->users++;
+        cam->io = IO_NONE;
+        cam->stream = STREAM_OFF;
+        cam->nbuffers = 0;
+        cam->frame_count = 0;
+        zc0301_empty_framequeues(cam);
+
+        DBG(3, "Video device /dev/video%d is open", cam->v4ldev->minor);
+
+out:
+        mutex_unlock(&cam->dev_mutex);
+        up_read(&zc0301_disconnect);
+        return err;
+}
+
+
+static int zc0301_release(struct inode* inode, struct file* filp)
+{
+        struct zc0301_device* cam = video_get_drvdata(video_devdata(filp));
+
+        mutex_lock(&cam->dev_mutex); /* prevent disconnect() to be called */
+
+        zc0301_stop_transfer(cam);
+
+        zc0301_release_buffers(cam);
+
+        if (cam->state & DEV_DISCONNECTED) {
+                zc0301_release_resources(cam);
+                usb_put_dev(cam->usbdev);
+                mutex_unlock(&cam->dev_mutex);
+                kfree(cam);
+                return 0;
+        }
+
+        cam->users--;
+        wake_up_interruptible_nr(&cam->open, 1);
+
+        DBG(3, "Video device /dev/video%d closed", cam->v4ldev->minor);
+
+        mutex_unlock(&cam->dev_mutex);
+
+        return 0;
+}
+
+
+static ssize_t
+zc0301_read(struct file* filp, char __user * buf, size_t count, loff_t* f_pos)
+{
+        struct zc0301_device* cam = video_get_drvdata(video_devdata(filp));
+        struct zc0301_frame_t* f, * i;
+        unsigned long lock_flags;
+        long timeout;
+        int err = 0;
+
+        if (mutex_lock_interruptible(&cam->fileop_mutex))
+                return -ERESTARTSYS;
+
+        if (cam->state & DEV_DISCONNECTED) {
+                DBG(1, "Device not present");
+                mutex_unlock(&cam->fileop_mutex);
+                return -ENODEV;
+        }
+
+        if (cam->state & DEV_MISCONFIGURED) {
+                DBG(1, "The camera is misconfigured. Close and open it "
+                       "again.");
+                mutex_unlock(&cam->fileop_mutex);
+                return -EIO;
+        }
+
+        if (cam->io == IO_MMAP) {
+                DBG(3, "Close and open the device again to choose the read "
+                       "method");
+                mutex_unlock(&cam->fileop_mutex);
+                return -EINVAL;
+        }
+
+        if (cam->io == IO_NONE) {
+                if (!zc0301_request_buffers(cam, cam->nreadbuffers, IO_READ)) {
+                        DBG(1, "read() failed, not enough memory");
+                        mutex_unlock(&cam->fileop_mutex);
+                        return -ENOMEM;
+                }
+                cam->io = IO_READ;
+                cam->stream = STREAM_ON;
+        }
+
+        if (list_empty(&cam->inqueue)) {
+                if (!list_empty(&cam->outqueue))
+                        zc0301_empty_framequeues(cam);
+                zc0301_queue_unusedframes(cam);
+        }
+
+        if (!count) {
+                mutex_unlock(&cam->fileop_mutex);
+                return 0;
+        }
+
+        if (list_empty(&cam->outqueue)) {
+                if (filp->f_flags & O_NONBLOCK) {
+                        mutex_unlock(&cam->fileop_mutex);
+                        return -EAGAIN;
+                }
+                timeout = wait_event_interruptible_timeout
+                          ( cam->wait_frame,
+                            (!list_empty(&cam->outqueue)) ||
+                            (cam->state & DEV_DISCONNECTED) ||
+                            (cam->state & DEV_MISCONFIGURED),
+                            cam->module_param.frame_timeout *
+                            1000 * msecs_to_jiffies(1) );
+                if (timeout < 0) {
+                        mutex_unlock(&cam->fileop_mutex);
+                        return timeout;
+                }
+                if (cam->state & DEV_DISCONNECTED) {
+                        mutex_unlock(&cam->fileop_mutex);
+                        return -ENODEV;
+                }
+                if (!timeout || (cam->state & DEV_MISCONFIGURED)) {
+                        mutex_unlock(&cam->fileop_mutex);
+                        return -EIO;
+                }
+        }
+
+        f = list_entry(cam->outqueue.prev, struct zc0301_frame_t, frame);
+
+        if (count > f->buf.bytesused)
+                count = f->buf.bytesused;
+
+        if (copy_to_user(buf, f->bufmem, count)) {
+                err = -EFAULT;
+                goto exit;
+        }
+        *f_pos += count;
+
+exit:
+        spin_lock_irqsave(&cam->queue_lock, lock_flags);
+        list_for_each_entry(i, &cam->outqueue, frame)
+                i->state = F_UNUSED;
+        INIT_LIST_HEAD(&cam->outqueue);
+        spin_unlock_irqrestore(&cam->queue_lock, lock_flags);
+
+        zc0301_queue_unusedframes(cam);
+
+        PDBGG("Frame #%lu, bytes read: %zu",
+              (unsigned long)f->buf.index, count);
+
+        mutex_unlock(&cam->fileop_mutex);
+
+        return err ? err : count;
+}
+
+
+static unsigned int zc0301_poll(struct file *filp, poll_table *wait)
+{
+        struct zc0301_device* cam = video_get_drvdata(video_devdata(filp));
+        struct zc0301_frame_t* f;
+        unsigned long lock_flags;
+        unsigned int mask = 0;
+
+        if (mutex_lock_interruptible(&cam->fileop_mutex))
+                return POLLERR;
+
+        if (cam->state & DEV_DISCONNECTED) {
+                DBG(1, "Device not present");
+                goto error;
+        }
+
+        if (cam->state & DEV_MISCONFIGURED) {
+                DBG(1, "The camera is misconfigured. Close and open it "
+                       "again.");
+                goto error;
+        }
+
+        if (cam->io == IO_NONE) {
+                if (!zc0301_request_buffers(cam, cam->nreadbuffers, IO_READ)) {
+                        DBG(1, "poll() failed, not enough memory");
+                        goto error;
+                }
+                cam->io = IO_READ;
+                cam->stream = STREAM_ON;
+        }
+
+        if (cam->io == IO_READ) {
+                spin_lock_irqsave(&cam->queue_lock, lock_flags);
+                list_for_each_entry(f, &cam->outqueue, frame)
+                        f->state = F_UNUSED;
+                INIT_LIST_HEAD(&cam->outqueue);
+                spin_unlock_irqrestore(&cam->queue_lock, lock_flags);
+                zc0301_queue_unusedframes(cam);
+        }
+
+        poll_wait(filp, &cam->wait_frame, wait);
+
+        if (!list_empty(&cam->outqueue))
+                mask |= POLLIN | POLLRDNORM;
+
+        mutex_unlock(&cam->fileop_mutex);
+
+        return mask;
+
+error:
+        mutex_unlock(&cam->fileop_mutex);
+        return POLLERR;
+}
+
+
+static void zc0301_vm_open(struct vm_area_struct* vma)
+{
+        struct zc0301_frame_t* f = vma->vm_private_data;
+        f->vma_use_count++;
+}
+
+
+static void zc0301_vm_close(struct vm_area_struct* vma)
+{
+        /* NOTE: buffers are not freed here */
+        struct zc0301_frame_t* f = vma->vm_private_data;
+        f->vma_use_count--;
+}
+
+
+static struct vm_operations_struct zc0301_vm_ops = {
+        .open = zc0301_vm_open,
+        .close = zc0301_vm_close,
+};
+
+
+static int zc0301_mmap(struct file* filp, struct vm_area_struct *vma)
+{
+        struct zc0301_device* cam = video_get_drvdata(video_devdata(filp));
+        unsigned long size = vma->vm_end - vma->vm_start,
+                      start = vma->vm_start;
+        void *pos;
+        u32 i;
+
+        if (mutex_lock_interruptible(&cam->fileop_mutex))
+                return -ERESTARTSYS;
+
+        if (cam->state & DEV_DISCONNECTED) {
+                DBG(1, "Device not present");
+                mutex_unlock(&cam->fileop_mutex);
+                return -ENODEV;
+        }
+
+        if (cam->state & DEV_MISCONFIGURED) {
+                DBG(1, "The camera is misconfigured. Close and open it "
+                       "again.");
+                mutex_unlock(&cam->fileop_mutex);
+                return -EIO;
+        }
+
+        if (cam->io != IO_MMAP || !(vma->vm_flags & VM_WRITE) ||
+            size != PAGE_ALIGN(cam->frame[0].buf.length)) {
+                mutex_unlock(&cam->fileop_mutex);
+                return -EINVAL;
+        }
+
+        for (i = 0; i < cam->nbuffers; i++) {
+                if ((cam->frame[i].buf.m.offset>>PAGE_SHIFT) == vma->vm_pgoff)
+                        break;
+        }
+        if (i == cam->nbuffers) {
+                mutex_unlock(&cam->fileop_mutex);
+                return -EINVAL;
+        }
+
+        vma->vm_flags |= VM_IO;
+        vma->vm_flags |= VM_RESERVED;
+
+        pos = cam->frame[i].bufmem;
+        while (size > 0) { /* size is page-aligned */
+                if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
+                        mutex_unlock(&cam->fileop_mutex);
+                        return -EAGAIN;
+                }
+                start += PAGE_SIZE;
+                pos += PAGE_SIZE;
+                size -= PAGE_SIZE;
+        }
+
+        vma->vm_ops = &zc0301_vm_ops;
+        vma->vm_private_data = &cam->frame[i];
+
+        zc0301_vm_open(vma);
+
+        mutex_unlock(&cam->fileop_mutex);
+
+        return 0;
+}
+
+/*****************************************************************************/
+
+static int
+zc0301_vidioc_querycap(struct zc0301_device* cam, void __user * arg)
+{
+        struct v4l2_capability cap = {
+                .driver = "zc0301",
+                .version = ZC0301_MODULE_VERSION_CODE,
+                .capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE |
+                                V4L2_CAP_STREAMING,
+        };
+
+        strlcpy(cap.card, cam->v4ldev->name, sizeof(cap.card));
+        if (usb_make_path(cam->usbdev, cap.bus_info, sizeof(cap.bus_info)) < 0)
+                strlcpy(cap.bus_info, cam->usbdev->dev.bus_id,
+                        sizeof(cap.bus_info));
+
+        if (copy_to_user(arg, &cap, sizeof(cap)))
+                return -EFAULT;
+
+        return 0;
+}
+
+
+static int
+zc0301_vidioc_enuminput(struct zc0301_device* cam, void __user * arg)
+{
+        struct v4l2_input i;
+
+        if (copy_from_user(&i, arg, sizeof(i)))
+                return -EFAULT;
+
+        if (i.index)
+                return -EINVAL;
+
+        memset(&i, 0, sizeof(i));
+        strcpy(i.name, "Camera");
+        i.type = V4L2_INPUT_TYPE_CAMERA;
+
+        if (copy_to_user(arg, &i, sizeof(i)))
+                return -EFAULT;
+
+        return 0;
+}
+
+
+static int
+zc0301_vidioc_g_input(struct zc0301_device* cam, void __user * arg)
+{
+        int index = 0;
+
+        if (copy_to_user(arg, &index, sizeof(index)))
+                return -EFAULT;
+
+        return 0;
+}
+
+
+static int
+zc0301_vidioc_s_input(struct zc0301_device* cam, void __user * arg)
+{
+        int index;
+
+        if (copy_from_user(&index, arg, sizeof(index)))
+                return -EFAULT;
+
+        if (index != 0)
+                return -EINVAL;
+
+        return 0;
+}
+
+
+static int
+zc0301_vidioc_query_ctrl(struct zc0301_device* cam, void __user * arg)
+{
+        struct zc0301_sensor* s = &cam->sensor;
+        struct v4l2_queryctrl qc;
+        u8 i;
+
+        if (copy_from_user(&qc, arg, sizeof(qc)))
+                return -EFAULT;
+
+        for (i = 0; i < ARRAY_SIZE(s->qctrl); i++)
+                if (qc.id && qc.id == s->qctrl[i].id) {
+                        memcpy(&qc, &(s->qctrl[i]), sizeof(qc));
+                        if (copy_to_user(arg, &qc, sizeof(qc)))
+                                return -EFAULT;
+                        return 0;
+                }
+
+        return -EINVAL;
+}
+
+
+static int
+zc0301_vidioc_g_ctrl(struct zc0301_device* cam, void __user * arg)
+{
+        struct zc0301_sensor* s = &cam->sensor;
+        struct v4l2_control ctrl;
+        int err = 0;
+        u8 i;
+
+        if (!s->get_ctrl && !s->set_ctrl)
+                return -EINVAL;
+
+        if (copy_from_user(&ctrl, arg, sizeof(ctrl)))
+                return -EFAULT;
+
+        if (!s->get_ctrl) {
+                for (i = 0; i < ARRAY_SIZE(s->qctrl); i++)
+                        if (ctrl.id == s->qctrl[i].id) {
+                                ctrl.value = s->_qctrl[i].default_value;
+                                goto exit;
+                        }
+                return -EINVAL;
+        } else
+                err = s->get_ctrl(cam, &ctrl);
+
+exit:
+        if (copy_to_user(arg, &ctrl, sizeof(ctrl)))
+                return -EFAULT;
+
+        return err;
+}
+
+
+static int
+zc0301_vidioc_s_ctrl(struct zc0301_device* cam, void __user * arg)
+{
+        struct zc0301_sensor* s = &cam->sensor;
+        struct v4l2_control ctrl;
+        u8 i;
+        int err = 0;
+
+        if (!s->set_ctrl)
+                return -EINVAL;
+
+        if (copy_from_user(&ctrl, arg, sizeof(ctrl)))
+                return -EFAULT;
+
+        for (i = 0; i < ARRAY_SIZE(s->qctrl); i++)
+                if (ctrl.id == s->qctrl[i].id) {
+                        if (s->qctrl[i].flags & V4L2_CTRL_FLAG_DISABLED)
+                                return -EINVAL;
+                        if (ctrl.value < s->qctrl[i].minimum ||
+                            ctrl.value > s->qctrl[i].maximum)
+                                return -ERANGE;
+                        ctrl.value -= ctrl.value % s->qctrl[i].step;
+                        break;
+                }
+
+        if ((err = s->set_ctrl(cam, &ctrl)))
+                return err;
+
+        s->_qctrl[i].default_value = ctrl.value;
+
+        return 0;
+}
+
+
+static int
+zc0301_vidioc_cropcap(struct zc0301_device* cam, void __user * arg)
+{
+        struct v4l2_cropcap* cc = &(cam->sensor.cropcap);
+
+        cc->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+        cc->pixelaspect.numerator = 1;
+        cc->pixelaspect.denominator = 1;
+
+        if (copy_to_user(arg, cc, sizeof(*cc)))
+                return -EFAULT;
+
+        return 0;
+}
+
+
+static int
+zc0301_vidioc_g_crop(struct zc0301_device* cam, void __user * arg)
+{
+        struct zc0301_sensor* s = &cam->sensor;
+        struct v4l2_crop crop = {
+                .type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
+        };
+
+        memcpy(&(crop.c), &(s->_rect), sizeof(struct v4l2_rect));
+
+        if (copy_to_user(arg, &crop, sizeof(crop)))
+                return -EFAULT;
+
+        return 0;
+}
+
+
+static int
+zc0301_vidioc_s_crop(struct zc0301_device* cam, void __user * arg)
+{
+        struct zc0301_sensor* s = &cam->sensor;
+        struct v4l2_crop crop;
+        struct v4l2_rect* rect;
+        struct v4l2_rect* bounds = &(s->cropcap.bounds);
+        const enum zc0301_stream_state stream = cam->stream;
+        const u32 nbuffers = cam->nbuffers;
+        u32 i;
+        int err = 0;
+
+        if (copy_from_user(&crop, arg, sizeof(crop)))
+                return -EFAULT;
+
+        rect = &(crop.c);
+
+        if (crop.type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+                return -EINVAL;
+
+        if (cam->module_param.force_munmap)
+                for (i = 0; i < cam->nbuffers; i++)
+                        if (cam->frame[i].vma_use_count) {
+                                DBG(3, "VIDIOC_S_CROP failed. "
+                                       "Unmap the buffers first.");
+                                return -EINVAL;
+                        }
+
+        if (!s->set_crop) {
+                memcpy(rect, &(s->_rect), sizeof(*rect));
+                if (copy_to_user(arg, &crop, sizeof(crop)))
+                        return -EFAULT;
+                return 0;
+        }
+
+        rect->left &= ~7L;
+        rect->top &= ~7L;
+        if (rect->width < 8)
+                rect->width = 8;
+        if (rect->height < 8)
+                rect->height = 8;
+        if (rect->width > bounds->width)
+                rect->width = bounds->width;
+        if (rect->height > bounds->height)
+                rect->height = bounds->height;
+        if (rect->left < bounds->left)
+                rect->left = bounds->left;
+        if (rect->top < bounds->top)
+                rect->top = bounds->top;
+        if (rect->left + rect->width > bounds->left + bounds->width)
+                rect->left = bounds->left+bounds->width - rect->width;
+        if (rect->top + rect->height > bounds->top + bounds->height)
+                rect->top = bounds->top+bounds->height - rect->height;
+        rect->width &= ~7L;
+        rect->height &= ~7L;
+
+        if (cam->stream == STREAM_ON)
+                if ((err = zc0301_stream_interrupt(cam)))
+                        return err;
+
+        if (copy_to_user(arg, &crop, sizeof(crop))) {
+                cam->stream = stream;
+                return -EFAULT;
+        }
+
+        if (cam->module_param.force_munmap || cam->io == IO_READ)
+                zc0301_release_buffers(cam);
+
+        if (s->set_crop)
+                err += s->set_crop(cam, rect);
+
+        if (err) { /* atomic, no rollback in ioctl() */
+                cam->state |= DEV_MISCONFIGURED;
+                DBG(1, "VIDIOC_S_CROP failed because of hardware problems. To "
+                       "use the camera, close and open /dev/video%d again.",
+                    cam->v4ldev->minor);
+                return -EIO;
+        }
+
+        s->pix_format.width = rect->width;
+        s->pix_format.height = rect->height;
+        memcpy(&(s->_rect), rect, sizeof(*rect));
+
+        if ((cam->module_param.force_munmap  || cam->io == IO_READ) &&
+            nbuffers != zc0301_request_buffers(cam, nbuffers, cam->io)) {
+                cam->state |= DEV_MISCONFIGURED;
+                DBG(1, "VIDIOC_S_CROP failed because of not enough memory. To "
+                       "use the camera, close and open /dev/video%d again.",
+                    cam->v4ldev->minor);
+                return -ENOMEM;
+        }
+
+        if (cam->io == IO_READ)
+                zc0301_empty_framequeues(cam);
+        else if (cam->module_param.force_munmap)
+                zc0301_requeue_outqueue(cam);
+
+        cam->stream = stream;
+
+        return 0;
+}
+
+
+static int
+zc0301_vidioc_enum_fmt(struct zc0301_device* cam, void __user * arg)
+{
+        struct v4l2_fmtdesc fmtd;
+
+        if (copy_from_user(&fmtd, arg, sizeof(fmtd)))
+                return -EFAULT;
+
+        if (fmtd.index == 0) {
+                strcpy(fmtd.description, "JPEG");
+                fmtd.pixelformat = V4L2_PIX_FMT_JPEG;
+                fmtd.flags = V4L2_FMT_FLAG_COMPRESSED;
+        } else
+                return -EINVAL;
+
+        fmtd.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+        memset(&fmtd.reserved, 0, sizeof(fmtd.reserved));
+
+        if (copy_to_user(arg, &fmtd, sizeof(fmtd)))
+                return -EFAULT;
+
+        return 0;
+}
+
+
+static int
+zc0301_vidioc_g_fmt(struct zc0301_device* cam, void __user * arg)
+{
+        struct v4l2_format format;
+        struct v4l2_pix_format* pfmt = &(cam->sensor.pix_format);
+
+        if (copy_from_user(&format, arg, sizeof(format)))
+                return -EFAULT;
+
+        if (format.type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+                return -EINVAL;
+
+        pfmt->bytesperline = 0;
+        pfmt->sizeimage = pfmt->height * ((pfmt->width*pfmt->priv)/8);
+        pfmt->field = V4L2_FIELD_NONE;
+        memcpy(&(format.fmt.pix), pfmt, sizeof(*pfmt));
+
+        if (copy_to_user(arg, &format, sizeof(format)))
+                return -EFAULT;
+
+        return 0;
+}
+
+
+static int
+zc0301_vidioc_try_s_fmt(struct zc0301_device* cam, unsigned int cmd,
+                        void __user * arg)
+{
+        struct zc0301_sensor* s = &cam->sensor;
+        struct v4l2_format format;
+        struct v4l2_pix_format* pix;
+        struct v4l2_pix_format* pfmt = &(s->pix_format);
+        struct v4l2_rect* bounds = &(s->cropcap.bounds);
+        struct v4l2_rect rect;
+        const enum zc0301_stream_state stream = cam->stream;
+        const u32 nbuffers = cam->nbuffers;
+        u32 i;
+        int err = 0;
+
+        if (copy_from_user(&format, arg, sizeof(format)))
+                return -EFAULT;
+
+        pix = &(format.fmt.pix);
+
+        if (format.type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+                return -EINVAL;
+
+        memcpy(&rect, &(s->_rect), sizeof(rect));
+
+        if (!s->set_crop) {
+                pix->width = rect.width;
+                pix->height = rect.height;
+        } else {
+                rect.width = pix->width;
+                rect.height = pix->height;
+        }
+
+        if (rect.width < 8)
+                rect.width = 8;
+        if (rect.height < 8)
+                rect.height = 8;
+        if (rect.width > bounds->left + bounds->width - rect.left)
+                rect.width = bounds->left + bounds->width - rect.left;
+        if (rect.height > bounds->top + bounds->height - rect.top)
+                rect.height = bounds->top + bounds->height - rect.top;
+        rect.width &= ~7L;
+        rect.height &= ~7L;
+
+        pix->width = rect.width;
+        pix->height = rect.height;
+        pix->pixelformat = pfmt->pixelformat;
+        pix->priv = pfmt->priv;
+        pix->colorspace = pfmt->colorspace;
+        pix->bytesperline = 0;
+        pix->sizeimage = pix->height * ((pix->width * pix->priv) / 8);
+        pix->field = V4L2_FIELD_NONE;
+
+        if (cmd == VIDIOC_TRY_FMT) {
+                if (copy_to_user(arg, &format, sizeof(format)))
+                        return -EFAULT;
+                return 0;
+        }
+
+        if (cam->module_param.force_munmap)
+                for (i = 0; i < cam->nbuffers; i++)
+                        if (cam->frame[i].vma_use_count) {
+                                DBG(3, "VIDIOC_S_FMT failed. "
+                                       "Unmap the buffers first.");
+                                return -EINVAL;
+                        }
+
+        if (cam->stream == STREAM_ON)
+                if ((err = zc0301_stream_interrupt(cam)))
+                        return err;
+
+        if (copy_to_user(arg, &format, sizeof(format))) {
+                cam->stream = stream;
+                return -EFAULT;
+        }
+
+        if (cam->module_param.force_munmap || cam->io == IO_READ)
+                zc0301_release_buffers(cam);
+
+        if (s->set_crop)
+                err += s->set_crop(cam, &rect);
+
+        if (err) { /* atomic, no rollback in ioctl() */
+                cam->state |= DEV_MISCONFIGURED;
+                DBG(1, "VIDIOC_S_FMT failed because of hardware problems. To "
+                       "use the camera, close and open /dev/video%d again.",
+                    cam->v4ldev->minor);
+                return -EIO;
+        }
+
+        memcpy(pfmt, pix, sizeof(*pix));
+        memcpy(&(s->_rect), &rect, sizeof(rect));
+
+        if ((cam->module_param.force_munmap  || cam->io == IO_READ) &&
+            nbuffers != zc0301_request_buffers(cam, nbuffers, cam->io)) {
+                cam->state |= DEV_MISCONFIGURED;
+                DBG(1, "VIDIOC_S_FMT failed because of not enough memory. To "
+                       "use the camera, close and open /dev/video%d again.",
+                    cam->v4ldev->minor);
+                return -ENOMEM;
+        }
+
+        if (cam->io == IO_READ)
+                zc0301_empty_framequeues(cam);
+        else if (cam->module_param.force_munmap)
+                zc0301_requeue_outqueue(cam);
+
+        cam->stream = stream;
+
+        return 0;
+}
+
+
+static int
+zc0301_vidioc_g_jpegcomp(struct zc0301_device* cam, void __user * arg)
+{
+        if (copy_to_user(arg, &cam->compression, sizeof(cam->compression)))
+                return -EFAULT;
+
+        return 0;
+}
+
+
+static int
+zc0301_vidioc_s_jpegcomp(struct zc0301_device* cam, void __user * arg)
+{
+        struct v4l2_jpegcompression jc;
+        const enum zc0301_stream_state stream = cam->stream;
+        int err = 0;
+
+        if (copy_from_user(&jc, arg, sizeof(jc)))
+                return -EFAULT;
+
+        if (jc.quality != 0)
+                return -EINVAL;
+
+        if (cam->stream == STREAM_ON)
+                if ((err = zc0301_stream_interrupt(cam)))
+                        return err;
+
+        err += zc0301_set_compression(cam, &jc);
+        if (err) { /* atomic, no rollback in ioctl() */
+                cam->state |= DEV_MISCONFIGURED;
+                DBG(1, "VIDIOC_S_JPEGCOMP failed because of hardware "
+                       "problems. To use the camera, close and open "
+                       "/dev/video%d again.", cam->v4ldev->minor);
+                return -EIO;
+        }
+
+        cam->compression.quality = jc.quality;
+
+        cam->stream = stream;
+
+        return 0;
+}
+
+
+static int
+zc0301_vidioc_reqbufs(struct zc0301_device* cam, void __user * arg)
+{
+        struct v4l2_requestbuffers rb;
+        u32 i;
+        int err;
+
+        if (copy_from_user(&rb, arg, sizeof(rb)))
+                return -EFAULT;
+
+        if (rb.type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
+            rb.memory != V4L2_MEMORY_MMAP)
+                return -EINVAL;
+
+        if (cam->io == IO_READ) {
+                DBG(3, "Close and open the device again to choose the mmap "
+                       "I/O method");
+                return -EINVAL;
+        }
+
+        for (i = 0; i < cam->nbuffers; i++)
+                if (cam->frame[i].vma_use_count) {
+                        DBG(3, "VIDIOC_REQBUFS failed. "
+                               "Previous buffers are still mapped.");
+                        return -EINVAL;
+                }
+
+        if (cam->stream == STREAM_ON)
+                if ((err = zc0301_stream_interrupt(cam)))
+                        return err;
+
+        zc0301_empty_framequeues(cam);
+
+        zc0301_release_buffers(cam);
+        if (rb.count)
+                rb.count = zc0301_request_buffers(cam, rb.count, IO_MMAP);
+
+        if (copy_to_user(arg, &rb, sizeof(rb))) {
+                zc0301_release_buffers(cam);
+                cam->io = IO_NONE;
+                return -EFAULT;
+        }
+
+        cam->io = rb.count ? IO_MMAP : IO_NONE;
+
+        return 0;
+}
+
+
+static int
+zc0301_vidioc_querybuf(struct zc0301_device* cam, void __user * arg)
+{
+        struct v4l2_buffer b;
+
+        if (copy_from_user(&b, arg, sizeof(b)))
+                return -EFAULT;
+
+        if (b.type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
+            b.index >= cam->nbuffers || cam->io != IO_MMAP)
+                return -EINVAL;
+
+        memcpy(&b, &cam->frame[b.index].buf, sizeof(b));
+
+        if (cam->frame[b.index].vma_use_count)
+                b.flags |= V4L2_BUF_FLAG_MAPPED;
+
+        if (cam->frame[b.index].state == F_DONE)
+                b.flags |= V4L2_BUF_FLAG_DONE;
+        else if (cam->frame[b.index].state != F_UNUSED)
+                b.flags |= V4L2_BUF_FLAG_QUEUED;
+
+        if (copy_to_user(arg, &b, sizeof(b)))
+                return -EFAULT;
+
+        return 0;
+}
+
+
+static int
+zc0301_vidioc_qbuf(struct zc0301_device* cam, void __user * arg)
+{
+        struct v4l2_buffer b;
+        unsigned long lock_flags;
+
+        if (copy_from_user(&b, arg, sizeof(b)))
+                return -EFAULT;
+
+        if (b.type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
+            b.index >= cam->nbuffers || cam->io != IO_MMAP)
+                return -EINVAL;
+
+        if (cam->frame[b.index].state != F_UNUSED)
+                return -EINVAL;
+
+        cam->frame[b.index].state = F_QUEUED;
+
+        spin_lock_irqsave(&cam->queue_lock, lock_flags);
+        list_add_tail(&cam->frame[b.index].frame, &cam->inqueue);
+        spin_unlock_irqrestore(&cam->queue_lock, lock_flags);
+
+        PDBGG("Frame #%lu queued", (unsigned long)b.index);
+
+        return 0;
+}
+
+
+static int
+zc0301_vidioc_dqbuf(struct zc0301_device* cam, struct file* filp,
+                    void __user * arg)
+{
+        struct v4l2_buffer b;
+        struct zc0301_frame_t *f;
+        unsigned long lock_flags;
+        long timeout;
+
+        if (copy_from_user(&b, arg, sizeof(b)))
+                return -EFAULT;
+
+        if (b.type != V4L2_BUF_TYPE_VIDEO_CAPTURE || cam->io!= IO_MMAP)
+                return -EINVAL;
+
+        if (list_empty(&cam->outqueue)) {
+                if (cam->stream == STREAM_OFF)
+                        return -EINVAL;
+                if (filp->f_flags & O_NONBLOCK)
+                        return -EAGAIN;
+                timeout = wait_event_interruptible_timeout
+                          ( cam->wait_frame,
+                            (!list_empty(&cam->outqueue)) ||
+                            (cam->state & DEV_DISCONNECTED) ||
+                            (cam->state & DEV_MISCONFIGURED),
+                            cam->module_param.frame_timeout *
+                            1000 * msecs_to_jiffies(1) );
+                if (timeout < 0)
+                        return timeout;
+                if (cam->state & DEV_DISCONNECTED)
+                        return -ENODEV;
+                if (!timeout || (cam->state & DEV_MISCONFIGURED))
+                        return -EIO;
+        }
+
+        spin_lock_irqsave(&cam->queue_lock, lock_flags);
+        f = list_entry(cam->outqueue.next, struct zc0301_frame_t, frame);
+        list_del(cam->outqueue.next);
+        spin_unlock_irqrestore(&cam->queue_lock, lock_flags);
+
+        f->state = F_UNUSED;
+
+        memcpy(&b, &f->buf, sizeof(b));
+        if (f->vma_use_count)
+                b.flags |= V4L2_BUF_FLAG_MAPPED;
+
+        if (copy_to_user(arg, &b, sizeof(b)))
+                return -EFAULT;
+
+        PDBGG("Frame #%lu dequeued", (unsigned long)f->buf.index);
+
+        return 0;
+}
+
+
+static int
+zc0301_vidioc_streamon(struct zc0301_device* cam, void __user * arg)
+{
+        int type;
+
+        if (copy_from_user(&type, arg, sizeof(type)))
+                return -EFAULT;
+
+        if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE || cam->io != IO_MMAP)
+                return -EINVAL;
+
+        if (list_empty(&cam->inqueue))
+                return -EINVAL;
+
+        cam->stream = STREAM_ON;
+
+        DBG(3, "Stream on");
+
+        return 0;
+}
+
+
+static int
+zc0301_vidioc_streamoff(struct zc0301_device* cam, void __user * arg)
+{
+        int type, err;
+
+        if (copy_from_user(&type, arg, sizeof(type)))
+                return -EFAULT;
+
+        if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE || cam->io != IO_MMAP)
+                return -EINVAL;
+
+        if (cam->stream == STREAM_ON)
+                if ((err = zc0301_stream_interrupt(cam)))
+                        return err;
+
+        zc0301_empty_framequeues(cam);
+
+        DBG(3, "Stream off");
+
+        return 0;
+}
+
+
+static int
+zc0301_vidioc_g_parm(struct zc0301_device* cam, void __user * arg)
+{
+        struct v4l2_streamparm sp;
+
+        if (copy_from_user(&sp, arg, sizeof(sp)))
+                return -EFAULT;
+
+        if (sp.type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+                return -EINVAL;
+
+        sp.parm.capture.extendedmode = 0;
+        sp.parm.capture.readbuffers = cam->nreadbuffers;
+
+        if (copy_to_user(arg, &sp, sizeof(sp)))
+                return -EFAULT;
+
+        return 0;
+}
+
+
+static int
+zc0301_vidioc_s_parm(struct zc0301_device* cam, void __user * arg)
+{
+        struct v4l2_streamparm sp;
+
+        if (copy_from_user(&sp, arg, sizeof(sp)))
+                return -EFAULT;
+
+        if (sp.type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+                return -EINVAL;
+
+        sp.parm.capture.extendedmode = 0;
+
+        if (sp.parm.capture.readbuffers == 0)
+                sp.parm.capture.readbuffers = cam->nreadbuffers;
+
+        if (sp.parm.capture.readbuffers > ZC0301_MAX_FRAMES)
+                sp.parm.capture.readbuffers = ZC0301_MAX_FRAMES;
+
+        if (copy_to_user(arg, &sp, sizeof(sp)))
+                return -EFAULT;
+
+        cam->nreadbuffers = sp.parm.capture.readbuffers;
+
+        return 0;
+}
+
+
+static int zc0301_ioctl_v4l2(struct inode* inode, struct file* filp,
+                             unsigned int cmd, void __user * arg)
+{
+        struct zc0301_device* cam = video_get_drvdata(video_devdata(filp));
+
+        switch (cmd) {
+
+        case VIDIOC_QUERYCAP:
+                return zc0301_vidioc_querycap(cam, arg);
+
+        case VIDIOC_ENUMINPUT:
+                return zc0301_vidioc_enuminput(cam, arg);
+
+        case VIDIOC_G_INPUT:
+                return zc0301_vidioc_g_input(cam, arg);
+
+        case VIDIOC_S_INPUT:
+                return zc0301_vidioc_s_input(cam, arg);
+
+        case VIDIOC_QUERYCTRL:
+                return zc0301_vidioc_query_ctrl(cam, arg);
+
+        case VIDIOC_G_CTRL:
+                return zc0301_vidioc_g_ctrl(cam, arg);
+
+        case VIDIOC_S_CTRL_OLD:
+        case VIDIOC_S_CTRL:
+                return zc0301_vidioc_s_ctrl(cam, arg);
+
+        case VIDIOC_CROPCAP_OLD:
+        case VIDIOC_CROPCAP:
+                return zc0301_vidioc_cropcap(cam, arg);
+
+        case VIDIOC_G_CROP:
+                return zc0301_vidioc_g_crop(cam, arg);
+
+        case VIDIOC_S_CROP:
+                return zc0301_vidioc_s_crop(cam, arg);
+
+        case VIDIOC_ENUM_FMT:
+                return zc0301_vidioc_enum_fmt(cam, arg);
+
+        case VIDIOC_G_FMT:
+                return zc0301_vidioc_g_fmt(cam, arg);
+
+        case VIDIOC_TRY_FMT:
+        case VIDIOC_S_FMT:
+                return zc0301_vidioc_try_s_fmt(cam, cmd, arg);
+
+        case VIDIOC_G_JPEGCOMP:
+                return zc0301_vidioc_g_jpegcomp(cam, arg);
+
+        case VIDIOC_S_JPEGCOMP:
+                return zc0301_vidioc_s_jpegcomp(cam, arg);
+
+        case VIDIOC_REQBUFS:
+                return zc0301_vidioc_reqbufs(cam, arg);
+
+        case VIDIOC_QUERYBUF:
+                return zc0301_vidioc_querybuf(cam, arg);
+
+        case VIDIOC_QBUF:
+                return zc0301_vidioc_qbuf(cam, arg);
+
+        case VIDIOC_DQBUF:
+                return zc0301_vidioc_dqbuf(cam, filp, arg);
+
+        case VIDIOC_STREAMON:
+                return zc0301_vidioc_streamon(cam, arg);
+
+        case VIDIOC_STREAMOFF:
+                return zc0301_vidioc_streamoff(cam, arg);
+
+        case VIDIOC_G_PARM:
+                return zc0301_vidioc_g_parm(cam, arg);
+
+        case VIDIOC_S_PARM_OLD:
+        case VIDIOC_S_PARM:
+                return zc0301_vidioc_s_parm(cam, arg);
+
+        case VIDIOC_G_STD:
+        case VIDIOC_S_STD:
+        case VIDIOC_QUERYSTD:
+        case VIDIOC_ENUMSTD:
+        case VIDIOC_QUERYMENU:
+                return -EINVAL;
+
+        default:
+                return -EINVAL;
+
+        }
+}
+
+
+static int zc0301_ioctl(struct inode* inode, struct file* filp,
+                        unsigned int cmd, unsigned long arg)
+{
+        struct zc0301_device* cam = video_get_drvdata(video_devdata(filp));
+        int err = 0;
+
+        if (mutex_lock_interruptible(&cam->fileop_mutex))
+                return -ERESTARTSYS;
+
+        if (cam->state & DEV_DISCONNECTED) {
+                DBG(1, "Device not present");
+                mutex_unlock(&cam->fileop_mutex);
+                return -ENODEV;
+        }
+
+        if (cam->state & DEV_MISCONFIGURED) {
+                DBG(1, "The camera is misconfigured. Close and open it "
+                       "again.");
+                mutex_unlock(&cam->fileop_mutex);
+                return -EIO;
+        }
+
+        V4LDBG(3, "zc0301", cmd);
+
+        err = zc0301_ioctl_v4l2(inode, filp, cmd, (void __user *)arg);
+
+        mutex_unlock(&cam->fileop_mutex);
+
+        return err;
+}
+
+
+static struct file_operations zc0301_fops = {
+        .owner =   THIS_MODULE,
+        .open =    zc0301_open,
+        .release = zc0301_release,
+        .ioctl =   zc0301_ioctl,
+        .read =    zc0301_read,
+        .poll =    zc0301_poll,
+        .mmap =    zc0301_mmap,
+        .llseek =  no_llseek,
+};
+
+/*****************************************************************************/
+
+static int
+zc0301_usb_probe(struct usb_interface* intf, const struct usb_device_id* id)
+{
+        struct usb_device *udev = interface_to_usbdev(intf);
+        struct zc0301_device* cam;
+        static unsigned int dev_nr = 0;
+        unsigned int i;
+        int err = 0;
+
+        if (!(cam = kzalloc(sizeof(struct zc0301_device), GFP_KERNEL)))
+                return -ENOMEM;
+
+        cam->usbdev = udev;
+
+        if (!(cam->control_buffer = kzalloc(4, GFP_KERNEL))) {
+                DBG(1, "kmalloc() failed");
+                err = -ENOMEM;
+                goto fail;
+        }
+
+        if (!(cam->v4ldev = video_device_alloc())) {
+                DBG(1, "video_device_alloc() failed");
+                err = -ENOMEM;
+                goto fail;
+        }
+
+        mutex_init(&cam->dev_mutex);
+
+        DBG(2, "ZC0301 Image Processor and Control Chip detected "
+               "(vid/pid 0x%04X/0x%04X)",id->idVendor, id->idProduct);
+
+        for  (i = 0; zc0301_sensor_table[i]; i++) {
+                err = zc0301_sensor_table[i](cam);
+                if (!err)
+                        break;
+        }
+
+        if (!err)
+                DBG(2, "%s image sensor detected", cam->sensor.name);
+        else {
+                DBG(1, "No supported image sensor detected");
+                err = -ENODEV;
+                goto fail;
+        }
+
+        if (zc0301_init(cam)) {
+                DBG(1, "Initialization failed. I will retry on open().");
+                cam->state |= DEV_MISCONFIGURED;
+        }
+
+        strcpy(cam->v4ldev->name, "ZC0301 PC Camera");
+        cam->v4ldev->owner = THIS_MODULE;
+        cam->v4ldev->type = VID_TYPE_CAPTURE | VID_TYPE_SCALES;
+        cam->v4ldev->hardware = 0;
+        cam->v4ldev->fops = &zc0301_fops;
+        cam->v4ldev->minor = video_nr[dev_nr];
+        cam->v4ldev->release = video_device_release;
+        video_set_drvdata(cam->v4ldev, cam);
+
+        mutex_lock(&cam->dev_mutex);
+
+        err = video_register_device(cam->v4ldev, VFL_TYPE_GRABBER,
+                                    video_nr[dev_nr]);
+        if (err) {
+                DBG(1, "V4L2 device registration failed");
+                if (err == -ENFILE && video_nr[dev_nr] == -1)
+                        DBG(1, "Free /dev/videoX node not found");
+                video_nr[dev_nr] = -1;
+                dev_nr = (dev_nr < ZC0301_MAX_DEVICES-1) ? dev_nr+1 : 0;
+                mutex_unlock(&cam->dev_mutex);
+                goto fail;
+        }
+
+        DBG(2, "V4L2 device registered as /dev/video%d", cam->v4ldev->minor);
+
+        cam->module_param.force_munmap = force_munmap[dev_nr];
+        cam->module_param.frame_timeout = frame_timeout[dev_nr];
+
+        dev_nr = (dev_nr < ZC0301_MAX_DEVICES-1) ? dev_nr+1 : 0;
+
+        usb_set_intfdata(intf, cam);
+
+        mutex_unlock(&cam->dev_mutex);
+
+        return 0;
+
+fail:
+        if (cam) {
+                kfree(cam->control_buffer);
+                if (cam->v4ldev)
+                        video_device_release(cam->v4ldev);
+                kfree(cam);
+        }
+        return err;
+}
+
+
+static void zc0301_usb_disconnect(struct usb_interface* intf)
+{
+        struct zc0301_device* cam = usb_get_intfdata(intf);
+
+        if (!cam)
+                return;
+
+        down_write(&zc0301_disconnect);
+
+        mutex_lock(&cam->dev_mutex);
+
+        DBG(2, "Disconnecting %s...", cam->v4ldev->name);
+
+        wake_up_interruptible_all(&cam->open);
+
+        if (cam->users) {
+                DBG(2, "Device /dev/video%d is open! Deregistration and "
+                       "memory deallocation are deferred on close.",
+                    cam->v4ldev->minor);
+                cam->state |= DEV_MISCONFIGURED;
+                zc0301_stop_transfer(cam);
+                cam->state |= DEV_DISCONNECTED;
+                wake_up_interruptible(&cam->wait_frame);
+                wake_up(&cam->wait_stream);
+                usb_get_dev(cam->usbdev);
+        } else {
+                cam->state |= DEV_DISCONNECTED;
+                zc0301_release_resources(cam);
+        }
+
+        mutex_unlock(&cam->dev_mutex);
+
+        if (!cam->users)
+                kfree(cam);
+
+        up_write(&zc0301_disconnect);
+}
+
+
+static struct usb_driver zc0301_usb_driver = {
+        .name =       "zc0301",
+        .id_table =   zc0301_id_table,
+        .probe =      zc0301_usb_probe,
+        .disconnect = zc0301_usb_disconnect,
+};
+
+/*****************************************************************************/
+
+static int __init zc0301_module_init(void)
+{
+        int err = 0;
+
+        KDBG(2, ZC0301_MODULE_NAME " v" ZC0301_MODULE_VERSION);
+        KDBG(3, ZC0301_MODULE_AUTHOR);
+
+        if ((err = usb_register(&zc0301_usb_driver)))
+                KDBG(1, "usb_register() failed");
+
+        return err;
+}
+
+
+static void __exit zc0301_module_exit(void)
+{
+        usb_deregister(&zc0301_usb_driver);
+}
+
+
+module_init(zc0301_module_init);
+module_exit(zc0301_module_exit);
diff --git a/drivers/usb/media/zc0301_pas202bcb.c b/drivers/usb/media/zc0301_pas202bcb.c
new file mode 100644
index 000000000000..9d282a22c15f
--- /dev/null
+++ b/drivers/usb/media/zc0301_pas202bcb.c
@@ -0,0 +1,361 @@
+/***************************************************************************
+ * Plug-in for PAS202BCB image sensor connected to the ZC030! Image        *
+ * Processor and Control Chip                                              *
+ *                                                                         *
+ * Copyright (C) 2006 by Luca Risolia <luca.risolia@studio.unibo.it>       *
+ *                                                                         *
+ * Initialization values of the ZC0301 have been taken from the SPCA5XX    *
+ * driver maintained by Michel Xhaard <mxhaard@magic.fr>                   *
+ *                                                                         *
+ * This program is free software; you can redistribute it and/or modify    *
+ * it under the terms of the GNU General Public License as published by    *
+ * the Free Software Foundation; either version 2 of the License, or       *
+ * (at your option) any later version.                                     *
+ *                                                                         *
+ * This program is distributed in the hope that it will be useful,         *
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of          *
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           *
+ * GNU General Public License for more details.                            *
+ *                                                                         *
+ * You should have received a copy of the GNU General Public License       *
+ * along with this program; if not, write to the Free Software             *
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.               *
+ ***************************************************************************/
+
+/*
+   NOTE: Sensor controls are disabled for now, becouse changing them while
+         streaming sometimes results in out-of-sync video frames. We'll use
+         the default initialization, until we know how to stop and start video
+         in the chip. However, the image quality still looks good under various
+         light conditions.
+*/
+
+#include <linux/delay.h>
+#include "zc0301_sensor.h"
+
+
+static struct zc0301_sensor pas202bcb;
+
+
+static int pas202bcb_init(struct zc0301_device* cam)
+{
+        int err = 0;
+
+        err += zc0301_write_reg(cam, 0x0002, 0x00);
+        err += zc0301_write_reg(cam, 0x0003, 0x02);
+        err += zc0301_write_reg(cam, 0x0004, 0x80);
+        err += zc0301_write_reg(cam, 0x0005, 0x01);
+        err += zc0301_write_reg(cam, 0x0006, 0xE0);
+        err += zc0301_write_reg(cam, 0x0098, 0x00);
+        err += zc0301_write_reg(cam, 0x009A, 0x03);
+        err += zc0301_write_reg(cam, 0x011A, 0x00);
+        err += zc0301_write_reg(cam, 0x011C, 0x03);
+        err += zc0301_write_reg(cam, 0x009B, 0x01);
+        err += zc0301_write_reg(cam, 0x009C, 0xE6);
+        err += zc0301_write_reg(cam, 0x009D, 0x02);
+        err += zc0301_write_reg(cam, 0x009E, 0x86);
+
+        err += zc0301_i2c_write(cam, 0x02, 0x02);
+        err += zc0301_i2c_write(cam, 0x0A, 0x01);
+        err += zc0301_i2c_write(cam, 0x0B, 0x01);
+        err += zc0301_i2c_write(cam, 0x0D, 0x00);
+        err += zc0301_i2c_write(cam, 0x12, 0x05);
+        err += zc0301_i2c_write(cam, 0x13, 0x63);
+        err += zc0301_i2c_write(cam, 0x15, 0x70);
+
+        err += zc0301_write_reg(cam, 0x0101, 0xB7);
+        err += zc0301_write_reg(cam, 0x0100, 0x0D);
+        err += zc0301_write_reg(cam, 0x0189, 0x06);
+        err += zc0301_write_reg(cam, 0x01AD, 0x00);
+        err += zc0301_write_reg(cam, 0x01C5, 0x03);
+        err += zc0301_write_reg(cam, 0x01CB, 0x13);
+        err += zc0301_write_reg(cam, 0x0250, 0x08);
+        err += zc0301_write_reg(cam, 0x0301, 0x08);
+        err += zc0301_write_reg(cam, 0x018D, 0x70);
+        err += zc0301_write_reg(cam, 0x0008, 0x03);
+        err += zc0301_write_reg(cam, 0x01C6, 0x04);
+        err += zc0301_write_reg(cam, 0x01CB, 0x07);
+        err += zc0301_write_reg(cam, 0x0120, 0x11);
+        err += zc0301_write_reg(cam, 0x0121, 0x37);
+        err += zc0301_write_reg(cam, 0x0122, 0x58);
+        err += zc0301_write_reg(cam, 0x0123, 0x79);
+        err += zc0301_write_reg(cam, 0x0124, 0x91);
+        err += zc0301_write_reg(cam, 0x0125, 0xA6);
+        err += zc0301_write_reg(cam, 0x0126, 0xB8);
+        err += zc0301_write_reg(cam, 0x0127, 0xC7);
+        err += zc0301_write_reg(cam, 0x0128, 0xD3);
+        err += zc0301_write_reg(cam, 0x0129, 0xDE);
+        err += zc0301_write_reg(cam, 0x012A, 0xE6);
+        err += zc0301_write_reg(cam, 0x012B, 0xED);
+        err += zc0301_write_reg(cam, 0x012C, 0xF3);
+        err += zc0301_write_reg(cam, 0x012D, 0xF8);
+        err += zc0301_write_reg(cam, 0x012E, 0xFB);
+        err += zc0301_write_reg(cam, 0x012F, 0xFF);
+        err += zc0301_write_reg(cam, 0x0130, 0x26);
+        err += zc0301_write_reg(cam, 0x0131, 0x23);
+        err += zc0301_write_reg(cam, 0x0132, 0x20);
+        err += zc0301_write_reg(cam, 0x0133, 0x1C);
+        err += zc0301_write_reg(cam, 0x0134, 0x16);
+        err += zc0301_write_reg(cam, 0x0135, 0x13);
+        err += zc0301_write_reg(cam, 0x0136, 0x10);
+        err += zc0301_write_reg(cam, 0x0137, 0x0D);
+        err += zc0301_write_reg(cam, 0x0138, 0x0B);
+        err += zc0301_write_reg(cam, 0x0139, 0x09);
+        err += zc0301_write_reg(cam, 0x013A, 0x07);
+        err += zc0301_write_reg(cam, 0x013B, 0x06);
+        err += zc0301_write_reg(cam, 0x013C, 0x05);
+        err += zc0301_write_reg(cam, 0x013D, 0x04);
+        err += zc0301_write_reg(cam, 0x013E, 0x03);
+        err += zc0301_write_reg(cam, 0x013F, 0x02);
+        err += zc0301_write_reg(cam, 0x010A, 0x4C);
+        err += zc0301_write_reg(cam, 0x010B, 0xF5);
+        err += zc0301_write_reg(cam, 0x010C, 0xFF);
+        err += zc0301_write_reg(cam, 0x010D, 0xF9);
+        err += zc0301_write_reg(cam, 0x010E, 0x51);
+        err += zc0301_write_reg(cam, 0x010F, 0xF5);
+        err += zc0301_write_reg(cam, 0x0110, 0xFB);
+        err += zc0301_write_reg(cam, 0x0111, 0xED);
+        err += zc0301_write_reg(cam, 0x0112, 0x5F);
+        err += zc0301_write_reg(cam, 0x0180, 0x00);
+        err += zc0301_write_reg(cam, 0x0019, 0x00);
+        err += zc0301_write_reg(cam, 0x0087, 0x20);
+        err += zc0301_write_reg(cam, 0x0088, 0x21);
+
+        err += zc0301_i2c_write(cam, 0x20, 0x02);
+        err += zc0301_i2c_write(cam, 0x21, 0x1B);
+        err += zc0301_i2c_write(cam, 0x03, 0x44);
+        err += zc0301_i2c_write(cam, 0x0E, 0x01);
+        err += zc0301_i2c_write(cam, 0x0F, 0x00);
+
+        err += zc0301_write_reg(cam, 0x01A9, 0x14);
+        err += zc0301_write_reg(cam, 0x01AA, 0x24);
+        err += zc0301_write_reg(cam, 0x0190, 0x00);
+        err += zc0301_write_reg(cam, 0x0191, 0x02);
+        err += zc0301_write_reg(cam, 0x0192, 0x1B);
+        err += zc0301_write_reg(cam, 0x0195, 0x00);
+        err += zc0301_write_reg(cam, 0x0196, 0x00);
+        err += zc0301_write_reg(cam, 0x0197, 0x4D);
+        err += zc0301_write_reg(cam, 0x018C, 0x10);
+        err += zc0301_write_reg(cam, 0x018F, 0x20);
+        err += zc0301_write_reg(cam, 0x001D, 0x44);
+        err += zc0301_write_reg(cam, 0x001E, 0x6F);
+        err += zc0301_write_reg(cam, 0x001F, 0xAD);
+        err += zc0301_write_reg(cam, 0x0020, 0xEB);
+        err += zc0301_write_reg(cam, 0x0087, 0x0F);
+        err += zc0301_write_reg(cam, 0x0088, 0x0E);
+        err += zc0301_write_reg(cam, 0x0180, 0x40);
+        err += zc0301_write_reg(cam, 0x0192, 0x1B);
+        err += zc0301_write_reg(cam, 0x0191, 0x02);
+        err += zc0301_write_reg(cam, 0x0190, 0x00);
+        err += zc0301_write_reg(cam, 0x0116, 0x1D);
+        err += zc0301_write_reg(cam, 0x0117, 0x40);
+        err += zc0301_write_reg(cam, 0x0118, 0x99);
+        err += zc0301_write_reg(cam, 0x0180, 0x42);
+        err += zc0301_write_reg(cam, 0x0116, 0x1D);
+        err += zc0301_write_reg(cam, 0x0117, 0x40);
+        err += zc0301_write_reg(cam, 0x0118, 0x99);
+        err += zc0301_write_reg(cam, 0x0007, 0x00);
+
+        err += zc0301_i2c_write(cam, 0x11, 0x01);
+
+        msleep(100);
+
+        return err;
+}
+
+
+static int pas202bcb_get_ctrl(struct zc0301_device* cam,
+                              struct v4l2_control* ctrl)
+{
+        switch (ctrl->id) {
+        case V4L2_CID_EXPOSURE:
+                {
+                        int r1 = zc0301_i2c_read(cam, 0x04, 1),
+                            r2 = zc0301_i2c_read(cam, 0x05, 1);
+                        if (r1 < 0 || r2 < 0)
+                                return -EIO;
+                        ctrl->value = (r1 << 6) | (r2 & 0x3f);
+                }
+                return 0;
+        case V4L2_CID_RED_BALANCE:
+                if ((ctrl->value = zc0301_i2c_read(cam, 0x09, 1)) < 0)
+                        return -EIO;
+                ctrl->value &= 0x0f;
+                return 0;
+        case V4L2_CID_BLUE_BALANCE:
+                if ((ctrl->value = zc0301_i2c_read(cam, 0x07, 1)) < 0)
+                        return -EIO;
+                ctrl->value &= 0x0f;
+                return 0;
+        case V4L2_CID_GAIN:
+                if ((ctrl->value = zc0301_i2c_read(cam, 0x10, 1)) < 0)
+                        return -EIO;
+                ctrl->value &= 0x1f;
+                return 0;
+        case ZC0301_V4L2_CID_GREEN_BALANCE:
+                if ((ctrl->value = zc0301_i2c_read(cam, 0x08, 1)) < 0)
+                        return -EIO;
+                ctrl->value &= 0x0f;
+                return 0;
+        case ZC0301_V4L2_CID_DAC_MAGNITUDE:
+                if ((ctrl->value = zc0301_i2c_read(cam, 0x0c, 1)) < 0)
+                        return -EIO;
+                return 0;
+        default:
+                return -EINVAL;
+        }
+}
+
+
+static int pas202bcb_set_ctrl(struct zc0301_device* cam,
+                              const struct v4l2_control* ctrl)
+{
+        int err = 0;
+
+        switch (ctrl->id) {
+        case V4L2_CID_EXPOSURE:
+                err += zc0301_i2c_write(cam, 0x04, ctrl->value >> 6);
+                err += zc0301_i2c_write(cam, 0x05, ctrl->value & 0x3f);
+                break;
+        case V4L2_CID_RED_BALANCE:
+                err += zc0301_i2c_write(cam, 0x09, ctrl->value);
+                break;
+        case V4L2_CID_BLUE_BALANCE:
+                err += zc0301_i2c_write(cam, 0x07, ctrl->value);
+                break;
+        case V4L2_CID_GAIN:
+                err += zc0301_i2c_write(cam, 0x10, ctrl->value);
+                break;
+        case ZC0301_V4L2_CID_GREEN_BALANCE:
+                err += zc0301_i2c_write(cam, 0x08, ctrl->value);
+                break;
+        case ZC0301_V4L2_CID_DAC_MAGNITUDE:
+                err += zc0301_i2c_write(cam, 0x0c, ctrl->value);
+                break;
+        default:
+                return -EINVAL;
+        }
+        err += zc0301_i2c_write(cam, 0x11, 0x01);
+
+        return err ? -EIO : 0;
+}
+
+
+static struct zc0301_sensor pas202bcb = {
+        .name = "PAS202BCB",
+        .init = &pas202bcb_init,
+        .qctrl = {
+                {
+                        .id = V4L2_CID_EXPOSURE,
+                        .type = V4L2_CTRL_TYPE_INTEGER,
+                        .name = "exposure",
+                        .minimum = 0x01e5,
+                        .maximum = 0x3fff,
+                        .step = 0x0001,
+                        .default_value = 0x01e5,
+                        .flags = V4L2_CTRL_FLAG_DISABLED,
+                },
+                {
+                        .id = V4L2_CID_GAIN,
+                        .type = V4L2_CTRL_TYPE_INTEGER,
+                        .name = "global gain",
+                        .minimum = 0x00,
+                        .maximum = 0x1f,
+                        .step = 0x01,
+                        .default_value = 0x0c,
+                        .flags = V4L2_CTRL_FLAG_DISABLED,
+                },
+                {
+                        .id = ZC0301_V4L2_CID_DAC_MAGNITUDE,
+                        .type = V4L2_CTRL_TYPE_INTEGER,
+                        .name = "DAC magnitude",
+                        .minimum = 0x00,
+                        .maximum = 0xff,
+                        .step = 0x01,
+                        .default_value = 0x00,
+                        .flags = V4L2_CTRL_FLAG_DISABLED,
+                },
+                {
+                        .id = V4L2_CID_RED_BALANCE,
+                        .type = V4L2_CTRL_TYPE_INTEGER,
+                        .name = "red balance",
+                        .minimum = 0x00,
+                        .maximum = 0x0f,
+                        .step = 0x01,
+                        .default_value = 0x01,
+                        .flags = V4L2_CTRL_FLAG_DISABLED,
+                },
+                {
+                        .id = V4L2_CID_BLUE_BALANCE,
+                        .type = V4L2_CTRL_TYPE_INTEGER,
+                        .name = "blue balance",
+                        .minimum = 0x00,
+                        .maximum = 0x0f,
+                        .step = 0x01,
+                        .default_value = 0x05,
+                        .flags = V4L2_CTRL_FLAG_DISABLED,
+                },
+                {
+                        .id = ZC0301_V4L2_CID_GREEN_BALANCE,
+                        .type = V4L2_CTRL_TYPE_INTEGER,
+                        .name = "green balance",
+                        .minimum = 0x00,
+                        .maximum = 0x0f,
+                        .step = 0x01,
+                        .default_value = 0x00,
+                        .flags = V4L2_CTRL_FLAG_DISABLED,
+                },
+        },
+        .get_ctrl = &pas202bcb_get_ctrl,
+        .set_ctrl = &pas202bcb_set_ctrl,
+        .cropcap = {
+                .bounds = {
+                        .left = 0,
+                        .top = 0,
+                        .width = 640,
+                        .height = 480,
+                },
+                .defrect = {
+                        .left = 0,
+                        .top = 0,
+                        .width = 640,
+                        .height = 480,
+                },
+        },
+        .pix_format = {
+                .width = 640,
+                .height = 480,
+                .pixelformat = V4L2_PIX_FMT_JPEG,
+                .priv = 8,
+        },
+};
+
+
+int zc0301_probe_pas202bcb(struct zc0301_device* cam)
+{
+        int r0 = 0, r1 = 0, err = 0;
+        unsigned int pid = 0;
+
+        err += zc0301_write_reg(cam, 0x0000, 0x01);
+        err += zc0301_write_reg(cam, 0x0010, 0x0e);
+        err += zc0301_write_reg(cam, 0x0001, 0x01);
+        err += zc0301_write_reg(cam, 0x0012, 0x03);
+        err += zc0301_write_reg(cam, 0x0012, 0x01);
+        err += zc0301_write_reg(cam, 0x008d, 0x08);
+
+        msleep(10);
+
+        r0 = zc0301_i2c_read(cam, 0x00, 1);
+        r1 = zc0301_i2c_read(cam, 0x01, 1);
+
+        if (r0 < 0 || r1 < 0 || err)
+                return -EIO;
+
+        pid = (r0 << 4) | ((r1 & 0xf0) >> 4);
+        if (pid != 0x017)
+                return -ENODEV;
+
+        zc0301_attach_sensor(cam, &pas202bcb);
+
+        return 0;
+}
diff --git a/drivers/usb/media/zc0301_sensor.h b/drivers/usb/media/zc0301_sensor.h
new file mode 100644
index 000000000000..cf0965a81d01
--- /dev/null
+++ b/drivers/usb/media/zc0301_sensor.h
@@ -0,0 +1,103 @@
+/***************************************************************************
+ * API for image sensors connected to the ZC030! Image Processor and       *
+ * Control Chip                                                            *
+ *                                                                         *
+ * Copyright (C) 2006 by Luca Risolia <luca.risolia@studio.unibo.it>       *
+ *                                                                         *
+ * This program is free software; you can redistribute it and/or modify    *
+ * it under the terms of the GNU General Public License as published by    *
+ * the Free Software Foundation; either version 2 of the License, or       *
+ * (at your option) any later version.                                     *
+ *                                                                         *
+ * This program is distributed in the hope that it will be useful,         *
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of          *
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           *
+ * GNU General Public License for more details.                            *
+ *                                                                         *
+ * You should have received a copy of the GNU General Public License       *
+ * along with this program; if not, write to the Free Software             *
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.               *
+ ***************************************************************************/
+
+#ifndef _ZC0301_SENSOR_H_
+#define _ZC0301_SENSOR_H_
+
+#include <linux/usb.h>
+#include <linux/videodev.h>
+#include <linux/device.h>
+#include <linux/stddef.h>
+#include <linux/errno.h>
+#include <asm/types.h>
+
+struct zc0301_device;
+struct zc0301_sensor;
+
+/*****************************************************************************/
+
+extern int zc0301_probe_pas202bcb(struct zc0301_device* cam);
+
+#define ZC0301_SENSOR_TABLE                                                   \
+/* Weak detections must go at the end of the list */                          \
+static int (*zc0301_sensor_table[])(struct zc0301_device*) = {                \
+        &zc0301_probe_pas202bcb,                                              \
+        NULL,                                                                 \
+};
+
+extern struct zc0301_device*
+zc0301_match_id(struct zc0301_device* cam, const struct usb_device_id *id);
+
+extern void
+zc0301_attach_sensor(struct zc0301_device* cam, struct zc0301_sensor* sensor);
+
+#define ZC0301_USB_DEVICE(vend, prod, intclass)                               \
+        .match_flags = USB_DEVICE_ID_MATCH_DEVICE |                           \
+                       USB_DEVICE_ID_MATCH_INT_CLASS,                         \
+        .idVendor = (vend),                                                   \
+        .idProduct = (prod),                                                  \
+        .bInterfaceClass = (intclass)
+
+#define ZC0301_ID_TABLE                                                       \
+static const struct usb_device_id zc0301_id_table[] =  {                      \
+        { ZC0301_USB_DEVICE(0x041e, 0x4017, 0xff), },                         \
+        { ZC0301_USB_DEVICE(0x041e, 0x401c, 0xff), }, /* PAS106 */            \
+        { ZC0301_USB_DEVICE(0x041e, 0x401e, 0xff), }, /* HV7131B */           \
+        { ZC0301_USB_DEVICE(0x041e, 0x4034, 0xff), }, /* PAS106 */            \
+        { ZC0301_USB_DEVICE(0x041e, 0x4035, 0xff), }, /* PAS106 */            \
+        { ZC0301_USB_DEVICE(0x046d, 0x08ae, 0xff), }, /* PAS202BCB */         \
+        { ZC0301_USB_DEVICE(0x0ac8, 0x0301, 0xff), },                         \
+        { ZC0301_USB_DEVICE(0x10fd, 0x8050, 0xff), }, /* TAS5130D */          \
+        { }                                                                   \
+};
+
+/*****************************************************************************/
+
+extern int zc0301_write_reg(struct zc0301_device*, u16 index, u16 value);
+extern int zc0301_read_reg(struct zc0301_device*, u16 index);
+extern int zc0301_i2c_write(struct zc0301_device*, u16 address, u16 value);
+extern int zc0301_i2c_read(struct zc0301_device*, u16 address, u8 length);
+
+/*****************************************************************************/
+
+#define ZC0301_MAX_CTRLS V4L2_CID_LASTP1-V4L2_CID_BASE+10
+#define ZC0301_V4L2_CID_DAC_MAGNITUDE V4L2_CID_PRIVATE_BASE
+#define ZC0301_V4L2_CID_GREEN_BALANCE V4L2_CID_PRIVATE_BASE + 1
+
+struct zc0301_sensor {
+        char name[32];
+
+        struct v4l2_queryctrl qctrl[ZC0301_MAX_CTRLS];
+        struct v4l2_cropcap cropcap;
+        struct v4l2_pix_format pix_format;
+
+        int (*init)(struct zc0301_device*);
+        int (*get_ctrl)(struct zc0301_device*, struct v4l2_control* ctrl);
+        int (*set_ctrl)(struct zc0301_device*,
+                        const struct v4l2_control* ctrl);
+        int (*set_crop)(struct zc0301_device*, const struct v4l2_rect* rect);
+
+        /* Private */
+        struct v4l2_queryctrl _qctrl[ZC0301_MAX_CTRLS];
+        struct v4l2_rect _rect;
+};
+
+#endif /* _ZC0301_SENSOR_H_ */
diff --git a/drivers/usb/misc/auerswald.c b/drivers/usb/misc/auerswald.c
index ad2f4cccd388..1fef36e71c57 100644
--- a/drivers/usb/misc/auerswald.c
+++ b/drivers/usb/misc/auerswald.c
@@ -570,10 +570,9 @@ static int auerchain_setup (pauerchain_t acp, unsigned int numElements)
 
         /* fill the list of free elements */
         for (;numElements; numElements--) {
-                acep = (pauerchainelement_t) kmalloc (sizeof (auerchainelement_t), GFP_KERNEL);
+                acep = kzalloc(sizeof(auerchainelement_t), GFP_KERNEL);
                 if (!acep)
                         goto ac_fail;
-                memset (acep, 0, sizeof (auerchainelement_t));
                 INIT_LIST_HEAD (&acep->list);
                 list_add_tail (&acep->list, &acp->free_list);
         }
@@ -761,10 +760,9 @@ static int auerbuf_setup (pauerbufctl_t bcp, unsigned int numElements, unsigned
 
         /* fill the list of free elements */
         for (;numElements; numElements--) {
-                bep = (pauerbuf_t) kmalloc (sizeof (auerbuf_t), GFP_KERNEL);
+                bep = kzalloc(sizeof(auerbuf_t), GFP_KERNEL);
                 if (!bep)
                         goto bl_fail;
-                memset (bep, 0, sizeof (auerbuf_t));
                 bep->list = bcp;
                 INIT_LIST_HEAD (&bep->buff_list);
                 bep->bufp = kmalloc (bufsize, GFP_KERNEL);
diff --git a/drivers/usb/misc/cytherm.c b/drivers/usb/misc/cytherm.c
index 6671317b495f..a04204292aa3 100644
--- a/drivers/usb/misc/cytherm.c
+++ b/drivers/usb/misc/cytherm.c
@@ -351,12 +351,11 @@ static int cytherm_probe(struct usb_interface *interface,
         struct usb_cytherm *dev = NULL;
         int retval = -ENOMEM;
 
-        dev = kmalloc (sizeof(struct usb_cytherm), GFP_KERNEL);
+        dev = kzalloc (sizeof(struct usb_cytherm), GFP_KERNEL);
         if (dev == NULL) {
                 dev_err (&interface->dev, "Out of memory\n");
                 goto error;
         }
-        memset (dev, 0x00, sizeof (*dev));
 
         dev->udev = usb_get_dev(udev);
 
diff --git a/drivers/usb/misc/idmouse.c b/drivers/usb/misc/idmouse.c
index d8cde1017985..d0b167256699 100644
--- a/drivers/usb/misc/idmouse.c
+++ b/drivers/usb/misc/idmouse.c
@@ -25,6 +25,7 @@
 #include <linux/module.h>
 #include <linux/smp_lock.h>
 #include <linux/completion.h>
+#include <linux/mutex.h>
 #include <asm/uaccess.h>
 #include <linux/usb.h>
 
@@ -121,7 +122,7 @@ static struct usb_driver idmouse_driver = {
 };
 
 /* prevent races between open() and disconnect() */
-static DECLARE_MUTEX(disconnect_sem);
+static DEFINE_MUTEX(disconnect_mutex);
 
 static int idmouse_create_image(struct usb_idmouse *dev)
 {
@@ -213,18 +214,18 @@ static int idmouse_open(struct inode *inode, struct file *file)
         int result = 0;
 
         /* prevent disconnects */
-        down(&disconnect_sem);
+        mutex_lock(&disconnect_mutex);
 
         /* get the interface from minor number and driver information */
         interface = usb_find_interface (&idmouse_driver, iminor (inode));
         if (!interface) {
-                up(&disconnect_sem);
+                mutex_unlock(&disconnect_mutex);
                 return -ENODEV;
         }
         /* get the device information block from the interface */
         dev = usb_get_intfdata(interface);
         if (!dev) {
-                up(&disconnect_sem);
+                mutex_unlock(&disconnect_mutex);
                 return -ENODEV;
         }
 
@@ -258,7 +259,7 @@ error:
         up(&dev->sem);
 
         /* unlock the disconnect semaphore */
-        up(&disconnect_sem);
+        mutex_unlock(&disconnect_mutex);
         return result;
 }
 
@@ -267,12 +268,12 @@ static int idmouse_release(struct inode *inode, struct file *file)
         struct usb_idmouse *dev;
 
         /* prevent a race condition with open() */
-        down(&disconnect_sem);
+        mutex_lock(&disconnect_mutex);
 
         dev = (struct usb_idmouse *) file->private_data;
 
         if (dev == NULL) {
-                up(&disconnect_sem);
+                mutex_unlock(&disconnect_mutex);
                 return -ENODEV;
         }
 
@@ -282,7 +283,7 @@ static int idmouse_release(struct inode *inode, struct file *file)
         /* are we really open? */
         if (dev->open <= 0) {
                 up(&dev->sem);
-                up(&disconnect_sem);
+                mutex_unlock(&disconnect_mutex);
                 return -ENODEV;
         }
 
@@ -292,12 +293,12 @@ static int idmouse_release(struct inode *inode, struct file *file)
                 /* the device was unplugged before the file was released */
                 up(&dev->sem);
                 idmouse_delete(dev);
-                up(&disconnect_sem);
+                mutex_unlock(&disconnect_mutex);
                 return 0;
         }
 
         up(&dev->sem);
-        up(&disconnect_sem);
+        mutex_unlock(&disconnect_mutex);
         return 0;
 }
 
@@ -340,10 +341,9 @@ static int idmouse_probe(struct usb_interface *interface,
                 return -ENODEV;
 
         /* allocate memory for our device state and initialize it */
-        dev = kmalloc(sizeof(*dev), GFP_KERNEL);
+        dev = kzalloc(sizeof(*dev), GFP_KERNEL);
         if (dev == NULL)
                 return -ENOMEM;
-        memset(dev, 0x00, sizeof(*dev));
 
         init_MUTEX(&dev->sem);
         dev->udev = udev;
@@ -400,7 +400,7 @@ static void idmouse_disconnect(struct usb_interface *interface)
         struct usb_idmouse *dev;
 
         /* prevent races with open() */
-        down(&disconnect_sem);
+        mutex_lock(&disconnect_mutex);
 
         /* get device structure */
         dev = usb_get_intfdata(interface);
@@ -422,7 +422,7 @@ static void idmouse_disconnect(struct usb_interface *interface)
         if (!dev->open)
                 idmouse_delete(dev);
 
-        up(&disconnect_sem);
+        mutex_unlock(&disconnect_mutex);
 
         info("%s disconnected", DRIVER_DESC);
 }
diff --git a/drivers/usb/misc/ldusb.c b/drivers/usb/misc/ldusb.c
index e2d1198623eb..966acb474f67 100644
--- a/drivers/usb/misc/ldusb.c
+++ b/drivers/usb/misc/ldusb.c
@@ -33,6 +33,7 @@
 #include <linux/init.h>
 #include <linux/slab.h>
 #include <linux/module.h>
+#include <linux/mutex.h>
 
 #include <asm/uaccess.h>
 #include <linux/input.h>
@@ -172,7 +173,7 @@ struct ld_usb {
 };
 
 /* prevent races between open() and disconnect() */
-static DECLARE_MUTEX(disconnect_sem);
+static DEFINE_MUTEX(disconnect_mutex);
 
 static struct usb_driver ld_usb_driver;
 
@@ -293,7 +294,7 @@ static int ld_usb_open(struct inode *inode, struct file *file)
         nonseekable_open(inode, file);
         subminor = iminor(inode);
 
-        down(&disconnect_sem);
+        mutex_lock(&disconnect_mutex);
 
         interface = usb_find_interface(&ld_usb_driver, subminor);
 
@@ -355,7 +356,7 @@ unlock_exit:
         up(&dev->sem);
 
 unlock_disconnect_exit:
-        up(&disconnect_sem);
+        mutex_unlock(&disconnect_mutex);
 
         return retval;
 }
@@ -626,12 +627,11 @@ static int ld_usb_probe(struct usb_interface *intf, const struct usb_device_id *
 
         /* allocate memory for our device state and intialize it */
 
-        dev = kmalloc(sizeof(*dev), GFP_KERNEL);
+        dev = kzalloc(sizeof(*dev), GFP_KERNEL);
         if (dev == NULL) {
                 dev_err(&intf->dev, "Out of memory\n");
                 goto exit;
         }
-        memset(dev, 0x00, sizeof(*dev));
         init_MUTEX(&dev->sem);
         dev->intf = intf;
         init_waitqueue_head(&dev->read_wait);
@@ -741,7 +741,7 @@ static void ld_usb_disconnect(struct usb_interface *intf)
         struct ld_usb *dev;
         int minor;
 
-        down(&disconnect_sem);
+        mutex_lock(&disconnect_mutex);
 
         dev = usb_get_intfdata(intf);
         usb_set_intfdata(intf, NULL);
@@ -762,7 +762,7 @@ static void ld_usb_disconnect(struct usb_interface *intf)
                 up(&dev->sem);
         }
 
-        up(&disconnect_sem);
+        mutex_unlock(&disconnect_mutex);
 
         dev_info(&intf->dev, "LD USB Device #%d now disconnected\n",
                  (minor - USB_LD_MINOR_BASE));
diff --git a/drivers/usb/misc/legousbtower.c b/drivers/usb/misc/legousbtower.c
index 1336745b8f55..779bcf0373ad 100644
--- a/drivers/usb/misc/legousbtower.c
+++ b/drivers/usb/misc/legousbtower.c
@@ -83,6 +83,7 @@
 #include <linux/module.h>
 #include <linux/smp_lock.h>
 #include <linux/completion.h>
+#include <linux/mutex.h>
 #include <asm/uaccess.h>
 #include <linux/usb.h>
 #include <linux/poll.h>
@@ -256,7 +257,7 @@ static void tower_disconnect	(struct usb_interface *interface);
 
 
 /* prevent races between open() and disconnect */
-static DECLARE_MUTEX (disconnect_sem);
+static DEFINE_MUTEX (disconnect_mutex);
 
 /* file operations needed when we register this driver */
 static struct file_operations tower_fops = {
@@ -349,7 +350,7 @@ static int tower_open (struct inode *inode, struct file *file)
         nonseekable_open(inode, file);
         subminor = iminor(inode);
 
-        down (&disconnect_sem);
+        mutex_lock (&disconnect_mutex);
 
         interface = usb_find_interface (&tower_driver, subminor);
 
@@ -427,7 +428,7 @@ unlock_exit:
         up (&dev->sem);
 
 unlock_disconnect_exit:
-        up (&disconnect_sem);
+        mutex_unlock (&disconnect_mutex);
 
         dbg(2, "%s: leave, return value %d ", __FUNCTION__, retval);
 
@@ -1005,7 +1006,7 @@ static void tower_disconnect (struct usb_interface *interface)
 
         dbg(2, "%s: enter", __FUNCTION__);
 
-        down (&disconnect_sem);
+        mutex_lock (&disconnect_mutex);
 
         dev = usb_get_intfdata (interface);
         usb_set_intfdata (interface, NULL);
@@ -1027,7 +1028,7 @@ static void tower_disconnect (struct usb_interface *interface)
                 up (&dev->sem);
         }
 
-        up (&disconnect_sem);
+        mutex_unlock (&disconnect_mutex);
 
         info("LEGO USB Tower #%d now disconnected", (minor - LEGO_USB_TOWER_MINOR_BASE));
 
diff --git a/drivers/usb/misc/phidgetkit.c b/drivers/usb/misc/phidgetkit.c
index 605a3c87e05c..997db5d8e35b 100644
--- a/drivers/usb/misc/phidgetkit.c
+++ b/drivers/usb/misc/phidgetkit.c
@@ -88,7 +88,7 @@ static int change_outputs(struct phidget_interfacekit *kit, int output_num, int
         int retval;
         int n;
 
-        buffer = kmalloc(4, GFP_KERNEL);
+        buffer = kzalloc(4, GFP_KERNEL);
         if (!buffer) {
                 dev_err(&kit->udev->dev, "%s - out of memory\n",
                         __FUNCTION__);
@@ -96,7 +96,6 @@ static int change_outputs(struct phidget_interfacekit *kit, int output_num, int
         }
 
         kit->outputs[output_num] = enable;
-        memset(buffer, 0, 4);
         for (n=0; n<8; n++) {
                 if (kit->outputs[n]) {
                         buffer[0] |= 1 << n;
@@ -192,7 +191,7 @@ static ssize_t set_backlight(struct device *dev, struct device_attribute *attr,
         unsigned char *buffer;
         int retval = -ENOMEM;
         
-        buffer = kmalloc(8, GFP_KERNEL);
+        buffer = kzalloc(8, GFP_KERNEL);
         if (!buffer) {
                 dev_err(&kit->udev->dev, "%s - out of memory\n", __FUNCTION__);
                 goto exit;
@@ -202,7 +201,6 @@ static ssize_t set_backlight(struct device *dev, struct device_attribute *attr,
                 retval = -EINVAL;
                 goto exit;
         }
-        memset(buffer, 0x00, 8);
         if (enabled)
                 buffer[0] = 0x01;
         buffer[7] = 0x11;
@@ -406,12 +404,11 @@ static int interfacekit_probe(struct usb_interface *intf, const struct usb_devic
         pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
         maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
         
-        kit = kmalloc(sizeof(*kit), GFP_KERNEL);
+        kit = kzalloc(sizeof(*kit), GFP_KERNEL);
         if (kit  == NULL) {
                 dev_err(&intf->dev, "%s - out of memory\n", __FUNCTION__);
                 return -ENOMEM;
         }
-        memset(kit, 0, sizeof(*kit));
         kit->ifkit = ifkit;
 
         kit->data = usb_buffer_alloc(dev, 8, SLAB_ATOMIC, &kit->data_dma);
diff --git a/drivers/usb/misc/phidgetservo.c b/drivers/usb/misc/phidgetservo.c
index b3418d2bcc69..5a040c205eed 100644
--- a/drivers/usb/misc/phidgetservo.c
+++ b/drivers/usb/misc/phidgetservo.c
@@ -252,12 +252,11 @@ servo_probe(struct usb_interface *interface, const struct usb_device_id *id)
         struct usb_device *udev = interface_to_usbdev(interface);
         struct phidget_servo *dev;
 
-        dev = kmalloc(sizeof (struct phidget_servo), GFP_KERNEL);
+        dev = kzalloc(sizeof (struct phidget_servo), GFP_KERNEL);
         if (dev == NULL) {
                 dev_err(&interface->dev, "%s - out of memory\n", __FUNCTION__);
                 return -ENOMEM;
         }
-        memset(dev, 0x00, sizeof (*dev));
 
         dev->udev = usb_get_dev(udev);
         dev->type = id->driver_info;
diff --git a/drivers/usb/misc/sisusbvga/sisusb.c b/drivers/usb/misc/sisusbvga/sisusb.c
index 3260d595441f..196c8794a73c 100644
--- a/drivers/usb/misc/sisusbvga/sisusb.c
+++ b/drivers/usb/misc/sisusbvga/sisusb.c
@@ -3188,7 +3188,7 @@ sisusb_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
                         break;
 
                 default:
-                        retval = -EINVAL;
+                        retval = -ENOTTY;
                         break;
         }
 
@@ -3251,12 +3251,11 @@ static int sisusb_probe(struct usb_interface *intf,
                 dev->devnum);
 
         /* Allocate memory for our private */
-        if (!(sisusb = kmalloc(sizeof(*sisusb), GFP_KERNEL))) {
+        if (!(sisusb = kzalloc(sizeof(*sisusb), GFP_KERNEL))) {
                 printk(KERN_ERR
                         "sisusb: Failed to allocate memory for private data\n");
                 return -ENOMEM;
         }
-        memset(sisusb, 0, sizeof(*sisusb));
         kref_init(&sisusb->kref);
 
         init_MUTEX(&(sisusb->lock));
diff --git a/drivers/usb/misc/sisusbvga/sisusb.h b/drivers/usb/misc/sisusbvga/sisusb.h
index 1d7a77cc7c4a..a716825d1f9b 100644
--- a/drivers/usb/misc/sisusbvga/sisusb.h
+++ b/drivers/usb/misc/sisusbvga/sisusb.h
@@ -37,24 +37,16 @@
 #ifndef _SISUSB_H_
 #define _SISUSB_H_
 
-#include <linux/version.h>
 #ifdef CONFIG_COMPAT
-#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,10)
-#include <linux/ioctl32.h>
-#define SISUSB_OLD_CONFIG_COMPAT
-#else
 #define SISUSB_NEW_CONFIG_COMPAT
 #endif
-#endif
 
 /* For older kernels, support for text consoles is by default
  * off. To ensable text console support, change the following:
  */
 #if 0
-#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,13)
 #define CONFIG_USB_SISUSBVGA_CON
 #endif
-#endif
 
 /* Version Information */
 
diff --git a/drivers/usb/misc/usblcd.c b/drivers/usb/misc/usblcd.c
index cc3dae3f34e0..c82c402285a0 100644
--- a/drivers/usb/misc/usblcd.c
+++ b/drivers/usb/misc/usblcd.c
@@ -270,12 +270,11 @@ static int lcd_probe(struct usb_interface *interface, const struct usb_device_id
         int retval = -ENOMEM;
 
         /* allocate memory for our device state and initialize it */
-        dev = kmalloc(sizeof(*dev), GFP_KERNEL);
+        dev = kzalloc(sizeof(*dev), GFP_KERNEL);
         if (dev == NULL) {
                 err("Out of memory");
                 goto error;
         }
-        memset(dev, 0x00, sizeof(*dev));
         kref_init(&dev->kref);
 
         dev->udev = usb_get_dev(interface_to_usbdev(interface));
diff --git a/drivers/usb/misc/usbled.c b/drivers/usb/misc/usbled.c
index 877b081a3a6e..f441964132c0 100644
--- a/drivers/usb/misc/usbled.c
+++ b/drivers/usb/misc/usbled.c
@@ -106,12 +106,11 @@ static int led_probe(struct usb_interface *interface, const struct usb_device_id
         struct usb_led *dev = NULL;
         int retval = -ENOMEM;
 
-        dev = kmalloc(sizeof(struct usb_led), GFP_KERNEL);
+        dev = kzalloc(sizeof(struct usb_led), GFP_KERNEL);
         if (dev == NULL) {
                 dev_err(&interface->dev, "Out of memory\n");
                 goto error;
         }
-        memset (dev, 0x00, sizeof (*dev));
 
         dev->udev = usb_get_dev(udev);
 
diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c
index 84fa1728f052..9d59b901841c 100644
--- a/drivers/usb/misc/usbtest.c
+++ b/drivers/usb/misc/usbtest.c
@@ -382,12 +382,11 @@ alloc_sglist (int nents, int max, int vary)
         for (i = 0; i < nents; i++) {
                 char            *buf;
 
-                buf = kmalloc (size, SLAB_KERNEL);
+                buf = kzalloc (size, SLAB_KERNEL);
                 if (!buf) {
                         free_sglist (sg, i);
                         return NULL;
                 }
-                memset (buf, 0, size);
 
                 /* kmalloc pages are always physically contiguous! */
                 sg_init_one(&sg[i], buf, size);
@@ -842,10 +841,9 @@ test_ctrl_queue (struct usbtest_dev *dev, struct usbtest_param *param)
          * as with bulk/intr sglists, sglen is the queue depth; it also
          * controls which subtests run (more tests than sglen) or rerun.
          */
-        urb = kmalloc (param->sglen * sizeof (struct urb *), SLAB_KERNEL);
+        urb = kcalloc(param->sglen, sizeof(struct urb *), SLAB_KERNEL);
         if (!urb)
                 return -ENOMEM;
-        memset (urb, 0, param->sglen * sizeof (struct urb *));
         for (i = 0; i < param->sglen; i++) {
                 int                     pipe = usb_rcvctrlpipe (udev, 0);
                 unsigned                len;
@@ -1865,10 +1863,9 @@ usbtest_probe (struct usb_interface *intf, const struct usb_device_id *id)
         }
 #endif
 
-        dev = kmalloc (sizeof *dev, SLAB_KERNEL);
+        dev = kzalloc(sizeof(*dev), SLAB_KERNEL);
         if (!dev)
                 return -ENOMEM;
-        memset (dev, 0, sizeof *dev);
         info = (struct usbtest_info *) id->driver_info;
         dev->info = info;
         init_MUTEX (&dev->sem);
diff --git a/drivers/usb/mon/mon_main.c b/drivers/usb/mon/mon_main.c
index c34944c75047..6ecc27302211 100644
--- a/drivers/usb/mon/mon_main.c
+++ b/drivers/usb/mon/mon_main.c
@@ -12,6 +12,7 @@
 #include <linux/debugfs.h>
 #include <linux/smp_lock.h>
 #include <linux/notifier.h>
+#include <linux/mutex.h>
 
 #include "usb_mon.h"
 #include "../core/hcd.h"
@@ -23,7 +24,7 @@ static void mon_dissolve(struct mon_bus *mbus, struct usb_bus *ubus);
 static void mon_bus_drop(struct kref *r);
 static void mon_bus_init(struct dentry *mondir, struct usb_bus *ubus);
 
-DECLARE_MUTEX(mon_lock);
+DEFINE_MUTEX(mon_lock);
 
 static struct dentry *mon_dir;          /* /dbg/usbmon */
 static LIST_HEAD(mon_buses);            /* All buses we know: struct mon_bus */
@@ -196,14 +197,14 @@ static void mon_bus_remove(struct usb_bus *ubus)
 {
         struct mon_bus *mbus = ubus->mon_bus;
 
-        down(&mon_lock);
+        mutex_lock(&mon_lock);
         list_del(&mbus->bus_link);
         debugfs_remove(mbus->dent_t);
         debugfs_remove(mbus->dent_s);
 
         mon_dissolve(mbus, ubus);
         kref_put(&mbus->ref, mon_bus_drop);
-        up(&mon_lock);
+        mutex_unlock(&mon_lock);
 }
 
 static int mon_notify(struct notifier_block *self, unsigned long action,
@@ -276,9 +277,8 @@ static void mon_bus_init(struct dentry *mondir, struct usb_bus *ubus)
         char name[NAMESZ];
         int rc;
 
-        if ((mbus = kmalloc(sizeof(struct mon_bus), GFP_KERNEL)) == NULL)
+        if ((mbus = kzalloc(sizeof(struct mon_bus), GFP_KERNEL)) == NULL)
                 goto err_alloc;
-        memset(mbus, 0, sizeof(struct mon_bus));
         kref_init(&mbus->ref);
         spin_lock_init(&mbus->lock);
         INIT_LIST_HEAD(&mbus->r_list);
@@ -307,9 +307,9 @@ static void mon_bus_init(struct dentry *mondir, struct usb_bus *ubus)
                 goto err_create_s;
         mbus->dent_s = d;
 
-        down(&mon_lock);
+        mutex_lock(&mon_lock);
         list_add_tail(&mbus->bus_link, &mon_buses);
-        up(&mon_lock);
+        mutex_unlock(&mon_lock);
         return;
 
 err_create_s:
@@ -347,11 +347,11 @@ static int __init mon_init(void)
 
         usb_register_notify(&mon_nb);
 
-        down(&usb_bus_list_lock);
+        mutex_lock(&usb_bus_list_lock);
         list_for_each_entry (ubus, &usb_bus_list, bus_list) {
                 mon_bus_init(mondir, ubus);
         }
-        up(&usb_bus_list_lock);
+        mutex_unlock(&usb_bus_list_lock);
         return 0;
 }
 
@@ -363,7 +363,7 @@ static void __exit mon_exit(void)
         usb_unregister_notify(&mon_nb);
         usb_mon_deregister();
 
-        down(&mon_lock);
+        mutex_lock(&mon_lock);
         while (!list_empty(&mon_buses)) {
                 p = mon_buses.next;
                 mbus = list_entry(p, struct mon_bus, bus_link);
@@ -387,7 +387,7 @@ static void __exit mon_exit(void)
                 mon_dissolve(mbus, mbus->u_bus);
                 kref_put(&mbus->ref, mon_bus_drop);
         }
-        up(&mon_lock);
+        mutex_unlock(&mon_lock);
 
         debugfs_remove(mon_dir);
 }
diff --git a/drivers/usb/mon/mon_text.c b/drivers/usb/mon/mon_text.c
index 611612146ae9..ac043ec2b8dc 100644
--- a/drivers/usb/mon/mon_text.c
+++ b/drivers/usb/mon/mon_text.c
@@ -8,6 +8,7 @@
 #include <linux/list.h>
 #include <linux/usb.h>
 #include <linux/time.h>
+#include <linux/mutex.h>
 #include <asm/uaccess.h>
 
 #include "usb_mon.h"
@@ -54,7 +55,7 @@ struct mon_reader_text {
         wait_queue_head_t wait;
         int printf_size;
         char *printf_buf;
-        struct semaphore printf_lock;
+        struct mutex printf_lock;
 
         char slab_name[SLAB_NAME_SZ];
 };
@@ -208,19 +209,18 @@ static int mon_text_open(struct inode *inode, struct file *file)
         struct mon_reader_text *rp;
         int rc;
 
-        down(&mon_lock);
+        mutex_lock(&mon_lock);
         mbus = inode->u.generic_ip;
         ubus = mbus->u_bus;
 
-        rp = kmalloc(sizeof(struct mon_reader_text), GFP_KERNEL);
+        rp = kzalloc(sizeof(struct mon_reader_text), GFP_KERNEL);
         if (rp == NULL) {
                 rc = -ENOMEM;
                 goto err_alloc;
         }
-        memset(rp, 0, sizeof(struct mon_reader_text));
         INIT_LIST_HEAD(&rp->e_list);
         init_waitqueue_head(&rp->wait);
-        init_MUTEX(&rp->printf_lock);
+        mutex_init(&rp->printf_lock);
 
         rp->printf_size = PRINTF_DFL;
         rp->printf_buf = kmalloc(rp->printf_size, GFP_KERNEL);
@@ -247,7 +247,7 @@ static int mon_text_open(struct inode *inode, struct file *file)
         mon_reader_add(mbus, &rp->r);
 
         file->private_data = rp;
-        up(&mon_lock);
+        mutex_unlock(&mon_lock);
         return 0;
 
 // err_busy:
@@ -257,7 +257,7 @@ err_slab:
 err_alloc_pr:
         kfree(rp);
 err_alloc:
-        up(&mon_lock);
+        mutex_unlock(&mon_lock);
         return rc;
 }
 
@@ -301,7 +301,7 @@ static ssize_t mon_text_read(struct file *file, char __user *buf,
         set_current_state(TASK_RUNNING);
         remove_wait_queue(&rp->wait, &waita);
 
-        down(&rp->printf_lock);
+        mutex_lock(&rp->printf_lock);
         cnt = 0;
         pbuf = rp->printf_buf;
         limit = rp->printf_size;
@@ -358,7 +358,7 @@ static ssize_t mon_text_read(struct file *file, char __user *buf,
 
         if (copy_to_user(buf, rp->printf_buf, cnt))
                 cnt = -EFAULT;
-        up(&rp->printf_lock);
+        mutex_unlock(&rp->printf_lock);
         kmem_cache_free(rp->e_slab, ep);
         return cnt;
 }
@@ -371,12 +371,12 @@ static int mon_text_release(struct inode *inode, struct file *file)
         struct list_head *p;
         struct mon_event_text *ep;
 
-        down(&mon_lock);
+        mutex_lock(&mon_lock);
         mbus = inode->u.generic_ip;
 
         if (mbus->nreaders <= 0) {
                 printk(KERN_ERR TAG ": consistency error on close\n");
-                up(&mon_lock);
+                mutex_unlock(&mon_lock);
                 return 0;
         }
         mon_reader_del(mbus, &rp->r);
@@ -402,7 +402,7 @@ static int mon_text_release(struct inode *inode, struct file *file)
         kfree(rp->printf_buf);
         kfree(rp);
 
-        up(&mon_lock);
+        mutex_unlock(&mon_lock);
         return 0;
 }
 
diff --git a/drivers/usb/mon/usb_mon.h b/drivers/usb/mon/usb_mon.h
index 4be0f9346071..8e0613c350cc 100644
--- a/drivers/usb/mon/usb_mon.h
+++ b/drivers/usb/mon/usb_mon.h
@@ -49,7 +49,7 @@ void mon_reader_del(struct mon_bus *mbus, struct mon_reader *r);
  */
 extern char mon_dmapeek(unsigned char *dst, dma_addr_t dma_addr, int len);
 
-extern struct semaphore mon_lock;
+extern struct mutex mon_lock;
 
 extern struct file_operations mon_fops_text;
 extern struct file_operations mon_fops_stat;
diff --git a/drivers/usb/net/pegasus.c b/drivers/usb/net/pegasus.c
index 156a2f1cb39a..5b6675684567 100644
--- a/drivers/usb/net/pegasus.c
+++ b/drivers/usb/net/pegasus.c
@@ -524,6 +524,7 @@ static int enable_net_traffic(struct net_device *dev, struct usb_device *usb)
         ret = set_registers(pegasus, EthCtrl0, 3, data);
 
         if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
+            usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS2 ||
             usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
                 u16 auxmode;
                 read_mii_word(pegasus, 0, 0x1b, &auxmode);
diff --git a/drivers/usb/net/pegasus.h b/drivers/usb/net/pegasus.h
index 9fbd59b55cb6..a54752ce1493 100644
--- a/drivers/usb/net/pegasus.h
+++ b/drivers/usb/net/pegasus.h
@@ -25,7 +25,6 @@
 #define PHY_READ                0x40
 #define PHY_WRITE               0x20
 #define DEFAULT_GPIO_RESET      0x24
-#define LINKSYS_GPIO_RESET      0x24
 #define DEFAULT_GPIO_SET        0x26
 
 #define PEGASUS_PRESENT         0x00000001
@@ -140,6 +139,7 @@ struct usb_eth_dev {
 #define VENDOR_KINGSTON         0x0951
 #define VENDOR_LANEED           0x056e
 #define VENDOR_LINKSYS          0x066b
+#define VENDOR_LINKSYS2         0x077b
 #define VENDOR_MELCO            0x0411
 #define VENDOR_MICROSOFT        0x045e
 #define VENDOR_MOBILITY         0x1342
@@ -218,15 +218,15 @@ PEGASUS_DEV( "Corega FEter USB-TX", VENDOR_COREGA, 0x0004,
 PEGASUS_DEV( "Corega FEter USB-TXS", VENDOR_COREGA, 0x000d,
                 DEFAULT_GPIO_RESET | PEGASUS_II )
 PEGASUS_DEV( "D-Link DSB-650TX", VENDOR_DLINK, 0x4001,
-                LINKSYS_GPIO_RESET )
+                DEFAULT_GPIO_RESET )
 PEGASUS_DEV( "D-Link DSB-650TX", VENDOR_DLINK, 0x4002,
-                LINKSYS_GPIO_RESET )
+                DEFAULT_GPIO_RESET )
 PEGASUS_DEV( "D-Link DSB-650TX", VENDOR_DLINK, 0x4102,
-                LINKSYS_GPIO_RESET | PEGASUS_II )
+                DEFAULT_GPIO_RESET | PEGASUS_II )
 PEGASUS_DEV( "D-Link DSB-650TX", VENDOR_DLINK, 0x400b,
-                LINKSYS_GPIO_RESET | PEGASUS_II )
+                DEFAULT_GPIO_RESET | PEGASUS_II )
 PEGASUS_DEV( "D-Link DSB-650TX", VENDOR_DLINK, 0x200c,
-                LINKSYS_GPIO_RESET | PEGASUS_II )
+                DEFAULT_GPIO_RESET | PEGASUS_II )
 PEGASUS_DEV( "D-Link DSB-650TX(PNA)", VENDOR_DLINK, 0x4003,
                 DEFAULT_GPIO_RESET | HAS_HOME_PNA )
 PEGASUS_DEV( "D-Link DSB-650", VENDOR_DLINK, 0xabc1,
@@ -260,17 +260,19 @@ PEGASUS_DEV( "LANEED USB Ethernet LD-USB/T", VENDOR_LANEED, 0xabc1,
 PEGASUS_DEV( "LANEED USB Ethernet LD-USB/TX", VENDOR_LANEED, 0x200c,
                 DEFAULT_GPIO_RESET | PEGASUS_II )
 PEGASUS_DEV( "Linksys USB10TX", VENDOR_LINKSYS, 0x2202,
-                LINKSYS_GPIO_RESET )
+                DEFAULT_GPIO_RESET )
 PEGASUS_DEV( "Linksys USB100TX", VENDOR_LINKSYS, 0x2203,
-                LINKSYS_GPIO_RESET )
+                DEFAULT_GPIO_RESET )
 PEGASUS_DEV( "Linksys USB100TX", VENDOR_LINKSYS, 0x2204,
-                LINKSYS_GPIO_RESET | HAS_HOME_PNA )
+                DEFAULT_GPIO_RESET | HAS_HOME_PNA )
 PEGASUS_DEV( "Linksys USB10T Ethernet Adapter", VENDOR_LINKSYS, 0x2206,
-                LINKSYS_GPIO_RESET | PEGASUS_II)
+                DEFAULT_GPIO_RESET | PEGASUS_II)
+PEGASUS_DEV( "Linksys USBVPN1", VENDOR_LINKSYS2, 0x08b4,
+                DEFAULT_GPIO_RESET )
 PEGASUS_DEV( "Linksys USB USB100TX", VENDOR_LINKSYS, 0x400b,
-                LINKSYS_GPIO_RESET | PEGASUS_II )
+                DEFAULT_GPIO_RESET | PEGASUS_II )
 PEGASUS_DEV( "Linksys USB10TX", VENDOR_LINKSYS, 0x200c,
-                LINKSYS_GPIO_RESET | PEGASUS_II )       
+                DEFAULT_GPIO_RESET | PEGASUS_II )
 PEGASUS_DEV( "MELCO/BUFFALO LUA-TX", VENDOR_MELCO, 0x0001,
                 DEFAULT_GPIO_RESET )
 PEGASUS_DEV( "MELCO/BUFFALO LUA-TX", VENDOR_MELCO, 0x0005,
diff --git a/drivers/usb/net/rtl8150.c b/drivers/usb/net/rtl8150.c
index 8ca52be23976..1bbbae283c0b 100644
--- a/drivers/usb/net/rtl8150.c
+++ b/drivers/usb/net/rtl8150.c
@@ -880,7 +880,6 @@ static int rtl8150_probe(struct usb_interface *intf,
         }
         fill_skb_pool(dev);
         set_ethernet_addr(dev);
-        info("%s: rtl8150 is detected", netdev->name);
         
         usb_set_intfdata(intf, dev);
         SET_NETDEV_DEV(netdev, &intf->dev);
@@ -888,6 +887,9 @@ static int rtl8150_probe(struct usb_interface *intf,
                 err("couldn't register the device");
                 goto out2;
         }
+
+        info("%s: rtl8150 is detected", netdev->name);
+
         return 0;
 
 out2:
diff --git a/drivers/usb/net/zd1201.c b/drivers/usb/net/zd1201.c
index f3a8e2807c3b..fe9b60cd8d95 100644
--- a/drivers/usb/net/zd1201.c
+++ b/drivers/usb/net/zd1201.c
@@ -621,10 +621,9 @@ static int zd1201_drvr_start(struct zd1201 *zd)
         __le16 zdmax;
         unsigned char *buffer;
         
-        buffer = kmalloc(ZD1201_RXSIZE, GFP_KERNEL);
+        buffer = kzalloc(ZD1201_RXSIZE, GFP_KERNEL);
         if (!buffer)
                 return -ENOMEM;
-        memset(buffer, 0, ZD1201_RXSIZE);
 
         usb_fill_bulk_urb(zd->rx_urb, zd->usb, 
             usb_rcvbulkpipe(zd->usb, zd->endp_in), buffer, ZD1201_RXSIZE,
@@ -1750,11 +1749,9 @@ static int zd1201_probe(struct usb_interface *interface,
 
         usb = interface_to_usbdev(interface);
 
-        zd = kmalloc(sizeof(struct zd1201), GFP_KERNEL);
-        if (!zd) {
+        zd = kzalloc(sizeof(struct zd1201), GFP_KERNEL);
+        if (!zd)
                 return -ENOMEM;
-        }
-        memset(zd, 0, sizeof(struct zd1201));
         zd->ap = ap;
         zd->usb = usb;
         zd->removed = 0;
diff --git a/drivers/usb/serial/Kconfig b/drivers/usb/serial/Kconfig
index be5dc80836c3..5a8a2c91c2b2 100644
--- a/drivers/usb/serial/Kconfig
+++ b/drivers/usb/serial/Kconfig
@@ -403,6 +403,13 @@ config USB_SERIAL_MCT_U232
           To compile this driver as a module, choose M here: the
           module will be called mct_u232.
 
+config USB_SERIAL_NAVMAN
+        tristate "USB Navman GPS device"
+        depends on USB_SERIAL
+        help
+          To compile this driver as a module, choose M here: the
+          module will be called navman.
+
 config USB_SERIAL_PL2303
         tristate "USB Prolific 2303 Single Port Serial Driver"
         depends on USB_SERIAL
diff --git a/drivers/usb/serial/Makefile b/drivers/usb/serial/Makefile
index f0b04420cea1..f7fe4172efed 100644
--- a/drivers/usb/serial/Makefile
+++ b/drivers/usb/serial/Makefile
@@ -32,6 +32,7 @@ obj-$(CONFIG_USB_SERIAL_KEYSPAN_PDA)		+= keyspan_pda.o
 obj-$(CONFIG_USB_SERIAL_KLSI)                   += kl5kusb105.o
 obj-$(CONFIG_USB_SERIAL_KOBIL_SCT)              += kobil_sct.o
 obj-$(CONFIG_USB_SERIAL_MCT_U232)               += mct_u232.o
+obj-$(CONFIG_USB_SERIAL_NAVMAN)                 += navman.o
 obj-$(CONFIG_USB_SERIAL_OMNINET)                += omninet.o
 obj-$(CONFIG_USB_SERIAL_OPTION)                 += option.o
 obj-$(CONFIG_USB_SERIAL_PL2303)                 += pl2303.o
diff --git a/drivers/usb/serial/cp2101.c b/drivers/usb/serial/cp2101.c
index dc7a069503e0..e0c2acdb3f06 100644
--- a/drivers/usb/serial/cp2101.c
+++ b/drivers/usb/serial/cp2101.c
@@ -32,7 +32,7 @@
 /*
  * Version Information
  */
-#define DRIVER_VERSION "v0.06"
+#define DRIVER_VERSION "v0.07"
 #define DRIVER_DESC "Silicon Labs CP2101/CP2102 RS232 serial adaptor driver"
 
 /*
@@ -58,6 +58,7 @@ static struct usb_device_id id_table [] = {
         { USB_DEVICE(0x10A6, 0xAA26) }, /* Knock-off DCU-11 cable */
         { USB_DEVICE(0x10AB, 0x10C5) }, /* Siemens MC60 Cable */
         { USB_DEVICE(0x10B5, 0xAC70) }, /* Nokia CA-42 USB */
+        { USB_DEVICE(0x10C4, 0x803B) }, /* Pololu USB-serial converter */
         { USB_DEVICE(0x10C4, 0x807A) }, /* Crumb128 board */
         { USB_DEVICE(0x10C4, 0x80CA) }, /* Degree Controls Inc */
         { USB_DEVICE(0x10C4, 0x80F6) }, /* Suunto sports instrument */
@@ -169,9 +170,7 @@ static int cp2101_get_config(struct usb_serial_port* port, u8 request,
         /* Number of integers required to contain the array */
         length = (((size - 1) | 3) + 1)/4;
 
-        buf = kmalloc (length * sizeof(u32), GFP_KERNEL);
-        memset(buf, 0, length * sizeof(u32));
-
+        buf = kcalloc(length, sizeof(u32), GFP_KERNEL);
         if (!buf) {
                 dev_err(&port->dev, "%s - out of memory.\n", __FUNCTION__);
                 return -ENOMEM;
diff --git a/drivers/usb/serial/cypress_m8.c b/drivers/usb/serial/cypress_m8.c
index 68067fe117a4..7212fbe3b6f2 100644
--- a/drivers/usb/serial/cypress_m8.c
+++ b/drivers/usb/serial/cypress_m8.c
@@ -98,10 +98,16 @@ static struct usb_device_id id_table_cyphidcomrs232 [] = {
         { }                                             /* Terminating entry */
 };
 
+static struct usb_device_id id_table_nokiaca42v2 [] = {
+        { USB_DEVICE(VENDOR_ID_DAZZLE, PRODUCT_ID_CA42) },
+        { }                                             /* Terminating entry */
+};
+
 static struct usb_device_id id_table_combined [] = {
         { USB_DEVICE(VENDOR_ID_DELORME, PRODUCT_ID_EARTHMATEUSB) },
         { USB_DEVICE(VENDOR_ID_DELORME, PRODUCT_ID_EARTHMATEUSB_LT20) },
         { USB_DEVICE(VENDOR_ID_CYPRESS, PRODUCT_ID_CYPHIDCOM) },
+        { USB_DEVICE(VENDOR_ID_DAZZLE, PRODUCT_ID_CA42) },
         { }                                             /* Terminating entry */
 };
 
@@ -149,6 +155,7 @@ struct cypress_buf {
 /* function prototypes for the Cypress USB to serial device */
 static int  cypress_earthmate_startup   (struct usb_serial *serial);
 static int  cypress_hidcom_startup      (struct usb_serial *serial);
+static int  cypress_ca42v2_startup      (struct usb_serial *serial);
 static void cypress_shutdown            (struct usb_serial *serial);
 static int  cypress_open                (struct usb_serial_port *port, struct file *filp);
 static void cypress_close               (struct usb_serial_port *port, struct file *filp);
@@ -235,6 +242,34 @@ static struct usb_serial_driver cypress_hidcom_device = {
         .write_int_callback =           cypress_write_int_callback,
 };
 
+static struct usb_serial_driver cypress_ca42v2_device = {
+        .driver = {
+                .owner =                THIS_MODULE,
+                .name =                 "nokiaca42v2",
+        },
+        .description =                  "Nokia CA-42 V2 Adapter",
+        .id_table =                     id_table_nokiaca42v2,
+        .num_interrupt_in =             1,
+        .num_interrupt_out =            1,
+        .num_bulk_in =                  NUM_DONT_CARE,
+        .num_bulk_out =                 NUM_DONT_CARE,
+        .num_ports =                    1,
+        .attach =                       cypress_ca42v2_startup,
+        .shutdown =                     cypress_shutdown,
+        .open =                         cypress_open,
+        .close =                        cypress_close,
+        .write =                        cypress_write,
+        .write_room =                   cypress_write_room,
+        .ioctl =                        cypress_ioctl,
+        .set_termios =                  cypress_set_termios,
+        .tiocmget =                     cypress_tiocmget,
+        .tiocmset =                     cypress_tiocmset,
+        .chars_in_buffer =              cypress_chars_in_buffer,
+        .throttle =                     cypress_throttle,
+        .unthrottle =                   cypress_unthrottle,
+        .read_int_callback =            cypress_read_int_callback,
+        .write_int_callback =           cypress_write_int_callback,
+};
 
 /*****************************************************************************
  * Cypress serial helper functions
@@ -286,6 +321,12 @@ static int cypress_serial_control (struct usb_serial_port *port, unsigned baud_m
                                                     __FUNCTION__);
                                                 new_baudrate = priv->baud_rate;
                                         }
+                                } else if (priv->chiptype == CT_CA42V2) {
+                                        if ( (new_baudrate = mask_to_rate(baud_mask)) == -1) {
+                                                err("%s - failed setting baud rate, unsupported speed",
+                                                    __FUNCTION__);
+                                                new_baudrate = priv->baud_rate;
+                                        }
                                 } else if (priv->chiptype == CT_GENERIC) {
                                         if ( (new_baudrate = mask_to_rate(baud_mask)) == -1) {
                                                 err("%s - failed setting baud rate, unsupported speed",
@@ -435,11 +476,10 @@ static int generic_startup (struct usb_serial *serial)
 
         dbg("%s - port %d", __FUNCTION__, serial->port[0]->number);
 
-        priv = kmalloc(sizeof (struct cypress_private), GFP_KERNEL);
+        priv = kzalloc(sizeof (struct cypress_private), GFP_KERNEL);
         if (!priv)
                 return -ENOMEM;
 
-        memset(priv, 0x00, sizeof (struct cypress_private));
         spin_lock_init(&priv->lock);
         priv->buf = cypress_buf_alloc(CYPRESS_BUF_SIZE);
         if (priv->buf == NULL) {
@@ -500,6 +540,25 @@ static int cypress_hidcom_startup (struct usb_serial *serial)
 } /* cypress_hidcom_startup */
 
 
+static int cypress_ca42v2_startup (struct usb_serial *serial)
+{
+        struct cypress_private *priv;
+
+        dbg("%s", __FUNCTION__);
+
+        if (generic_startup(serial)) {
+                dbg("%s - Failed setting up port %d", __FUNCTION__,
+                                serial->port[0]->number);
+                return 1;
+        }
+
+        priv = usb_get_serial_port_data(serial->port[0]);
+        priv->chiptype = CT_CA42V2;
+
+        return 0;
+} /* cypress_ca42v2_startup */
+
+
 static void cypress_shutdown (struct usb_serial *serial)
 {
         struct cypress_private *priv;
@@ -944,6 +1003,10 @@ static void cypress_set_termios (struct usb_serial_port *port,
                         *(tty->termios) = tty_std_termios;
                         tty->termios->c_cflag = B9600 | CS8 | CREAD | HUPCL |
                                 CLOCAL;
+                } else if (priv->chiptype == CT_CA42V2) {
+                        *(tty->termios) = tty_std_termios;
+                        tty->termios->c_cflag = B9600 | CS8 | CREAD | HUPCL |
+                                CLOCAL;
                 }
                 priv->termios_initialized = 1;
         }
@@ -1542,6 +1605,9 @@ static int __init cypress_init(void)
         retval = usb_serial_register(&cypress_hidcom_device);
         if (retval)
                 goto failed_hidcom_register;
+        retval = usb_serial_register(&cypress_ca42v2_device);
+        if (retval)
+                goto failed_ca42v2_register;
         retval = usb_register(&cypress_driver);
         if (retval)
                 goto failed_usb_register;
@@ -1550,6 +1616,8 @@ static int __init cypress_init(void)
         return 0;
 failed_usb_register:
         usb_deregister(&cypress_driver);
+failed_ca42v2_register:
+        usb_serial_deregister(&cypress_ca42v2_device);
 failed_hidcom_register:
         usb_serial_deregister(&cypress_hidcom_device);
 failed_em_register:
@@ -1566,6 +1634,7 @@ static void __exit cypress_exit (void)
         usb_deregister (&cypress_driver);
         usb_serial_deregister (&cypress_earthmate_device);
         usb_serial_deregister (&cypress_hidcom_device);
+        usb_serial_deregister (&cypress_ca42v2_device);
 }
 
 
diff --git a/drivers/usb/serial/cypress_m8.h b/drivers/usb/serial/cypress_m8.h
index 1fa119efe41a..e1c7c27e18b7 100644
--- a/drivers/usb/serial/cypress_m8.h
+++ b/drivers/usb/serial/cypress_m8.h
@@ -18,6 +18,10 @@
 /* Cypress HID->COM RS232 Adapter */
 #define VENDOR_ID_CYPRESS                0x04b4
 #define PRODUCT_ID_CYPHIDCOM             0x5500
+
+/* Nokia CA-42 USB to serial cable */
+#define VENDOR_ID_DAZZLE                0x07d0
+#define PRODUCT_ID_CA42                 0x4101
 /* End of device listing */
 
 /* Used for setting / requesting serial line settings */
@@ -34,6 +38,7 @@
 
 #define CT_EARTHMATE    0x01
 #define CT_CYPHIDCOM    0x02
+#define CT_CA42V2       0x03
 #define CT_GENERIC      0x0F
 /* End of chiptype definitions */
 
diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index c145e1ed8429..f3af81b4dd29 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -492,6 +492,7 @@ static struct usb_device_id id_table_combined [] = {
         { USB_DEVICE(FTDI_VID, FTDI_WESTREX_MODEL_777_PID) },
         { USB_DEVICE(FTDI_VID, FTDI_WESTREX_MODEL_8900F_PID) },
         { USB_DEVICE(FTDI_VID, FTDI_PCDJ_DAC2_PID) },
+        { USB_DEVICE(ICOM_ID1_VID, ICOM_ID1_PID) },
         { },                                    /* Optional parameter entry */
         { }                                     /* Terminating entry */
 };
@@ -1141,12 +1142,11 @@ static int ftdi_sio_attach (struct usb_serial *serial)
         
         dbg("%s",__FUNCTION__);
 
-        priv = kmalloc(sizeof(struct ftdi_private), GFP_KERNEL);
+        priv = kzalloc(sizeof(struct ftdi_private), GFP_KERNEL);
         if (!priv){
                 err("%s- kmalloc(%Zd) failed.", __FUNCTION__, sizeof(struct ftdi_private));
                 return -ENOMEM;
         }
-        memset(priv, 0, sizeof(*priv));
 
         spin_lock_init(&priv->rx_lock);
         init_waitqueue_head(&priv->delta_msr_wait);
diff --git a/drivers/usb/serial/ftdi_sio.h b/drivers/usb/serial/ftdi_sio.h
index bdef3b8c731f..8da773c2744d 100644
--- a/drivers/usb/serial/ftdi_sio.h
+++ b/drivers/usb/serial/ftdi_sio.h
@@ -146,6 +146,13 @@
 #define KOBIL_CONV_KAAN_PID     0x2021  /* KOBIL_Konverter for KAAN */
 
 /*
+ * Icom ID-1 digital transceiver
+ */
+
+#define ICOM_ID1_VID            0x0C26
+#define ICOM_ID1_PID            0x0004
+
+/*
  * DSS-20 Sync Station for Sony Ericsson P800
  */
  
diff --git a/drivers/usb/serial/garmin_gps.c b/drivers/usb/serial/garmin_gps.c
index d6f55e9dccae..5ec9bf5bac8d 100644
--- a/drivers/usb/serial/garmin_gps.c
+++ b/drivers/usb/serial/garmin_gps.c
@@ -1422,12 +1422,11 @@ static int garmin_attach (struct usb_serial *serial)
 
         dbg("%s", __FUNCTION__);
 
-        garmin_data_p = kmalloc (sizeof(struct garmin_data), GFP_KERNEL);
+        garmin_data_p = kzalloc(sizeof(struct garmin_data), GFP_KERNEL);
         if (garmin_data_p == NULL) {
                 dev_err(&port->dev, "%s - Out of memory\n", __FUNCTION__);
                 return -ENOMEM;
         }
-        memset (garmin_data_p, 0, sizeof(struct garmin_data));
         init_timer(&garmin_data_p->timer);
         spin_lock_init(&garmin_data_p->lock);
         INIT_LIST_HEAD(&garmin_data_p->pktlist);
diff --git a/drivers/usb/serial/io_edgeport.c b/drivers/usb/serial/io_edgeport.c
index 3f29e6b0fd19..b606c5968102 100644
--- a/drivers/usb/serial/io_edgeport.c
+++ b/drivers/usb/serial/io_edgeport.c
@@ -2725,12 +2725,11 @@ static int edge_startup (struct usb_serial *serial)
         dev = serial->dev;
 
         /* create our private serial structure */
-        edge_serial = kmalloc (sizeof(struct edgeport_serial), GFP_KERNEL);
+        edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
         if (edge_serial == NULL) {
                 dev_err(&serial->dev->dev, "%s - Out of memory\n", __FUNCTION__);
                 return -ENOMEM;
         }
-        memset (edge_serial, 0, sizeof(struct edgeport_serial));
         spin_lock_init(&edge_serial->es_lock);
         edge_serial->serial = serial;
         usb_set_serial_data(serial, edge_serial);
diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c
index afc0f34b3a46..8e1e2253748b 100644
--- a/drivers/usb/serial/io_ti.c
+++ b/drivers/usb/serial/io_ti.c
@@ -2727,12 +2727,11 @@ static int edge_startup (struct usb_serial *serial)
         dev = serial->dev;
 
         /* create our private serial structure */
-        edge_serial = kmalloc (sizeof(struct edgeport_serial), GFP_KERNEL);
+        edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
         if (edge_serial == NULL) {
                 dev_err(&serial->dev->dev, "%s - Out of memory\n", __FUNCTION__);
                 return -ENOMEM;
         }
-        memset (edge_serial, 0, sizeof(struct edgeport_serial));
         sema_init(&edge_serial->es_sem, 1);
         edge_serial->serial = serial;
         usb_set_serial_data(serial, edge_serial);
@@ -2745,12 +2744,11 @@ static int edge_startup (struct usb_serial *serial)
 
         /* set up our port private structures */
         for (i = 0; i < serial->num_ports; ++i) {
-                edge_port = kmalloc (sizeof(struct edgeport_port), GFP_KERNEL);
+                edge_port = kzalloc(sizeof(struct edgeport_port), GFP_KERNEL);
                 if (edge_port == NULL) {
                         dev_err(&serial->dev->dev, "%s - Out of memory\n", __FUNCTION__);
                         goto cleanup;
                 }
-                memset (edge_port, 0, sizeof(struct edgeport_port));
                 spin_lock_init(&edge_port->ep_lock);
                 edge_port->ep_out_buf = edge_buf_alloc(EDGE_OUT_BUF_SIZE);
                 if (edge_port->ep_out_buf == NULL) {
diff --git a/drivers/usb/serial/ir-usb.c b/drivers/usb/serial/ir-usb.c
index a59010421444..426182ddc42a 100644
--- a/drivers/usb/serial/ir-usb.c
+++ b/drivers/usb/serial/ir-usb.c
@@ -184,10 +184,9 @@ static struct irda_class_desc *irda_usb_find_class_desc(struct usb_device *dev,
         struct irda_class_desc *desc;
         int ret;
                 
-        desc = kmalloc(sizeof (struct irda_class_desc), GFP_KERNEL);
+        desc = kzalloc(sizeof (struct irda_class_desc), GFP_KERNEL);
         if (desc == NULL) 
                 return NULL;
-        memset(desc, 0, sizeof(struct irda_class_desc));
         
         ret = usb_control_msg(dev, usb_rcvctrlpipe(dev,0),
                         IU_REQ_GET_CLASS_DESC,
diff --git a/drivers/usb/serial/keyspan.c b/drivers/usb/serial/keyspan.c
index 3b958e60f5e8..052b735c4fbd 100644
--- a/drivers/usb/serial/keyspan.c
+++ b/drivers/usb/serial/keyspan.c
@@ -2250,12 +2250,11 @@ static int keyspan_startup (struct usb_serial *serial)
         }
 
         /* Setup private data for serial driver */
-        s_priv = kmalloc(sizeof(struct keyspan_serial_private), GFP_KERNEL);
+        s_priv = kzalloc(sizeof(struct keyspan_serial_private), GFP_KERNEL);
         if (!s_priv) {
                 dbg("%s - kmalloc for keyspan_serial_private failed.", __FUNCTION__);
                 return -ENOMEM;
         }
-        memset(s_priv, 0, sizeof(struct keyspan_serial_private));
 
         s_priv->device_details = d_details;
         usb_set_serial_data(serial, s_priv);
@@ -2263,12 +2262,11 @@ static int keyspan_startup (struct usb_serial *serial)
         /* Now setup per port private data */
         for (i = 0; i < serial->num_ports; i++) {
                 port = serial->port[i];
-                p_priv = kmalloc(sizeof(struct keyspan_port_private), GFP_KERNEL);
+                p_priv = kzalloc(sizeof(struct keyspan_port_private), GFP_KERNEL);
                 if (!p_priv) {
                         dbg("%s - kmalloc for keyspan_port_private (%d) failed!.", __FUNCTION__, i);
                         return (1);
                 }
-                memset(p_priv, 0, sizeof(struct keyspan_port_private));
                 p_priv->device_details = d_details;
                 usb_set_serial_port_data(port, p_priv);
         }
diff --git a/drivers/usb/serial/kobil_sct.c b/drivers/usb/serial/kobil_sct.c
index b8b213185d0f..87dfcd89ffab 100644
--- a/drivers/usb/serial/kobil_sct.c
+++ b/drivers/usb/serial/kobil_sct.c
@@ -255,11 +255,9 @@ static int kobil_open (struct usb_serial_port *port, struct file *filp)
         }
         
         // allocate memory for transfer buffer
-        transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);  
+        transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
         if (! transfer_buffer) {
                 return -ENOMEM;
-        } else {
-                memset(transfer_buffer, 0, transfer_buffer_length);
         }
         
         // allocate write_urb
@@ -383,11 +381,10 @@ static void kobil_read_int_callback( struct urb *purb, struct pt_regs *regs)
                 
                 // BEGIN DEBUG
                 /*
-                  dbg_data = (unsigned char *) kmalloc((3 *  purb->actual_length + 10) * sizeof(char), GFP_KERNEL);
+                  dbg_data = kzalloc((3 *  purb->actual_length + 10) * sizeof(char), GFP_KERNEL);
                   if (! dbg_data) {
                   return;
                   }
-                  memset(dbg_data, 0, (3 *  purb->actual_length + 10));
                   for (i = 0; i < purb->actual_length; i++) { 
                   sprintf(dbg_data +3*i, "%02X ", data[i]); 
                   }
@@ -518,11 +515,10 @@ static int kobil_tiocmget(struct usb_serial_port *port, struct file *file)
         }
 
         // allocate memory for transfer buffer
-        transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);  
+        transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
         if (!transfer_buffer) {
                 return -ENOMEM;
         }
-        memset(transfer_buffer, 0, transfer_buffer_length);
 
         result = usb_control_msg( port->serial->dev, 
                                   usb_rcvctrlpipe(port->serial->dev, 0 ), 
@@ -564,11 +560,10 @@ static int  kobil_tiocmset(struct usb_serial_port *port, struct file *file,
         }
 
         // allocate memory for transfer buffer
-        transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);
+        transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
         if (! transfer_buffer) {
                 return -ENOMEM;
         }
-        memset(transfer_buffer, 0, transfer_buffer_length);
 
         if (set & TIOCM_RTS)
                 rts = 1;
@@ -655,11 +650,10 @@ static int  kobil_ioctl(struct usb_serial_port *port, struct file *file,
                                                    (struct termios __user *)arg))
                         return -EFAULT;
                 
-                settings = (unsigned char *) kmalloc(50, GFP_KERNEL);  
+                settings = kzalloc(50, GFP_KERNEL);
                 if (! settings) {
                         return -ENOBUFS;
                 }
-                memset(settings, 0, 50);
 
                 switch (priv->internal_termios.c_cflag & CBAUD) {
                 case B1200:
diff --git a/drivers/usb/serial/mct_u232.c b/drivers/usb/serial/mct_u232.c
index b6d6cab9c859..35bd29b6c408 100644
--- a/drivers/usb/serial/mct_u232.c
+++ b/drivers/usb/serial/mct_u232.c
@@ -348,10 +348,9 @@ static int mct_u232_startup (struct usb_serial *serial)
         struct mct_u232_private *priv;
         struct usb_serial_port *port, *rport;
 
-        priv = kmalloc(sizeof(struct mct_u232_private), GFP_KERNEL);
+        priv = kzalloc(sizeof(struct mct_u232_private), GFP_KERNEL);
         if (!priv)
                 return -ENOMEM;
-        memset(priv, 0, sizeof(struct mct_u232_private));
         spin_lock_init(&priv->lock);
         usb_set_serial_port_data(serial->port[0], priv);
 
diff --git a/drivers/usb/serial/navman.c b/drivers/usb/serial/navman.c
new file mode 100644
index 000000000000..7f544081032e
--- /dev/null
+++ b/drivers/usb/serial/navman.c
@@ -0,0 +1,157 @@
+/*
+ * Navman Serial USB driver
+ *
+ * Copyright (C) 2006 Greg Kroah-Hartman <gregkh@suse.de>
+ *
+ *      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/kernel.h>
+#include <linux/init.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+#include "usb-serial.h"
+
+static int debug;
+
+static struct usb_device_id id_table [] = {
+        { USB_DEVICE(0x0a99, 0x0001) }, /* Talon Technology device */
+        { },
+};
+MODULE_DEVICE_TABLE(usb, id_table);
+
+static struct usb_driver navman_driver = {
+        .name =         "navman",
+        .probe =        usb_serial_probe,
+        .disconnect =   usb_serial_disconnect,
+        .id_table =     id_table,
+        .no_dynamic_id =        1,
+};
+
+static void navman_read_int_callback(struct urb *urb, struct pt_regs *regs)
+{
+        struct usb_serial_port *port = urb->context;
+        unsigned char *data = urb->transfer_buffer;
+        struct tty_struct *tty;
+        int result;
+
+        switch (urb->status) {
+        case 0:
+                /* success */
+                break;
+        case -ECONNRESET:
+        case -ENOENT:
+        case -ESHUTDOWN:
+                /* this urb is terminated, clean up */
+                dbg("%s - urb shutting down with status: %d",
+                    __FUNCTION__, urb->status);
+                return;
+        default:
+                dbg("%s - nonzero urb status received: %d",
+                    __FUNCTION__, urb->status);
+                goto exit;
+        }
+
+        usb_serial_debug_data(debug, &port->dev, __FUNCTION__,
+                              urb->actual_length, data);
+
+        tty = port->tty;
+        if (tty && urb->actual_length) {
+                tty_buffer_request_room(tty, urb->actual_length);
+                tty_insert_flip_string(tty, data, urb->actual_length);
+                tty_flip_buffer_push(tty);
+        }
+
+exit:
+        result = usb_submit_urb(urb, GFP_ATOMIC);
+        if (result)
+                dev_err(&urb->dev->dev,
+                        "%s - Error %d submitting interrupt urb\n",
+                        __FUNCTION__, result);
+}
+
+static int navman_open(struct usb_serial_port *port, struct file *filp)
+{
+        int result = 0;
+
+        dbg("%s - port %d", __FUNCTION__, port->number);
+
+        if (port->interrupt_in_urb) {
+                dbg("%s - adding interrupt input for treo", __FUNCTION__);
+                result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
+                if (result)
+                        dev_err(&port->dev,
+                                "%s - failed submitting interrupt urb, error %d\n",
+                                __FUNCTION__, result);
+        }
+        return result;
+}
+
+static void navman_close(struct usb_serial_port *port, struct file *filp)
+{
+        dbg("%s - port %d", __FUNCTION__, port->number);
+
+        if (port->interrupt_in_urb)
+                usb_kill_urb(port->interrupt_in_urb);
+}
+
+static int navman_write(struct usb_serial_port *port,
+                        const unsigned char *buf, int count)
+{
+        dbg("%s - port %d", __FUNCTION__, port->number);
+
+        /*
+         * This device can't write any data, only read from the device
+         * so we just silently eat all data sent to us and say it was
+         * successfully sent.
+         * Evil, I know, but do you have a better idea?
+         */
+
+        return count;
+}
+
+static struct usb_serial_driver navman_device = {
+        .driver = {
+                .owner =        THIS_MODULE,
+                .name =         "navman",
+        },
+        .id_table =             id_table,
+        .num_interrupt_in =     NUM_DONT_CARE,
+        .num_bulk_in =          NUM_DONT_CARE,
+        .num_bulk_out =         NUM_DONT_CARE,
+        .num_ports =            1,
+        .open =                 navman_open,
+        .close =                navman_close,
+        .write =                navman_write,
+        .read_int_callback =    navman_read_int_callback,
+};
+
+static int __init navman_init(void)
+{
+        int retval;
+
+        retval = usb_serial_register(&navman_device);
+        if (retval)
+                return retval;
+        retval = usb_register(&navman_driver);
+        if (retval)
+                usb_serial_deregister(&navman_device);
+        return retval;
+}
+
+static void __exit navman_exit(void)
+{
+        usb_deregister(&navman_driver);
+        usb_serial_deregister(&navman_device);
+}
+
+module_init(navman_init);
+module_exit(navman_exit);
+MODULE_LICENSE("GPL");
+
+module_param(debug, bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(debug, "Debug enabled or not");
diff --git a/drivers/usb/serial/omninet.c b/drivers/usb/serial/omninet.c
index 762d8ff9a1e4..4d40704dea2c 100644
--- a/drivers/usb/serial/omninet.c
+++ b/drivers/usb/serial/omninet.c
@@ -204,7 +204,7 @@ static void omninet_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
         int i;
         int result;
 
-//      dbg("omninet_read_bulk_callback");
+        dbg("%s - port %d", __FUNCTION__, port->number);
 
         if (urb->status) {
                 dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status);
@@ -250,7 +250,7 @@ static int omninet_write (struct usb_serial_port *port, const unsigned char *buf
 
         int                     result;
 
-//      dbg("omninet_write port %d", port->number);
+        dbg("%s - port %d", __FUNCTION__, port->number);
 
         if (count == 0) {
                 dbg("%s - write request of 0 bytes", __FUNCTION__);
@@ -302,7 +302,7 @@ static int omninet_write_room (struct usb_serial_port *port)
         if (wport->write_urb_busy)
                 room = wport->bulk_out_size - OMNINET_HEADERLEN;
 
-//      dbg("omninet_write_room returns %d", room);
+        dbg("%s - returns %d", __FUNCTION__, room);
 
         return (room);
 }
@@ -312,7 +312,7 @@ static void omninet_write_bulk_callback (struct urb *urb, struct pt_regs *regs)
 /*      struct omninet_header   *header = (struct omninet_header  *) urb->transfer_buffer; */
         struct usb_serial_port  *port   = (struct usb_serial_port *) urb->context;
 
-//      dbg("omninet_write_bulk_callback, port %0x\n", port);
+        dbg("%s - port %0x\n", __FUNCTION__, port->number);
 
         port->write_urb_busy = 0;
         if (urb->status) {
@@ -321,8 +321,6 @@ static void omninet_write_bulk_callback (struct urb *urb, struct pt_regs *regs)
         }
 
         schedule_work(&port->work);
-
-//      dbg("omninet_write_bulk_callback, tty %0x\n", tty);
 }
 
 
diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
index 52bdf6fe46f2..a8455c9e79dd 100644
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -631,13 +631,12 @@ static int option_startup(struct usb_serial *serial)
         /* Now setup per port private data */
         for (i = 0; i < serial->num_ports; i++) {
                 port = serial->port[i];
-                portdata = kmalloc(sizeof(*portdata), GFP_KERNEL);
+                portdata = kzalloc(sizeof(*portdata), GFP_KERNEL);
                 if (!portdata) {
                         dbg("%s: kmalloc for option_port_private (%d) failed!.",
                                         __FUNCTION__, i);
                         return (1);
                 }
-                memset(portdata, 0, sizeof(struct option_port_private));
 
                 usb_set_serial_port_data(port, portdata);
 
diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c
index 37c81c08faad..b3014fda645c 100644
--- a/drivers/usb/serial/pl2303.c
+++ b/drivers/usb/serial/pl2303.c
@@ -77,6 +77,7 @@ static struct usb_device_id id_table [] = {
         { USB_DEVICE(CA_42_CA42_VENDOR_ID, CA_42_CA42_PRODUCT_ID) },
         { USB_DEVICE(SAGEM_VENDOR_ID, SAGEM_PRODUCT_ID) },
         { USB_DEVICE(LEADTEK_VENDOR_ID, LEADTEK_9531_PRODUCT_ID) },
+        { USB_DEVICE(SPEEDDRAGON_VENDOR_ID, SPEEDDRAGON_PRODUCT_ID) },
         { }                                     /* Terminating entry */
 };
 
@@ -218,10 +219,9 @@ static int pl2303_startup (struct usb_serial *serial)
         dbg("device type: %d", type);
 
         for (i = 0; i < serial->num_ports; ++i) {
-                priv = kmalloc (sizeof (struct pl2303_private), GFP_KERNEL);
+                priv = kzalloc(sizeof(struct pl2303_private), GFP_KERNEL);
                 if (!priv)
                         goto cleanup;
-                memset (priv, 0x00, sizeof (struct pl2303_private));
                 spin_lock_init(&priv->lock);
                 priv->buf = pl2303_buf_alloc(PL2303_BUF_SIZE);
                 if (priv->buf == NULL) {
@@ -383,12 +383,11 @@ static void pl2303_set_termios (struct usb_serial_port *port, struct termios *ol
                 }
         }
 
-        buf = kmalloc (7, GFP_KERNEL);
+        buf = kzalloc (7, GFP_KERNEL);
         if (!buf) {
                 dev_err(&port->dev, "%s - out of memory.\n", __FUNCTION__);
                 return;
         }
-        memset (buf, 0x00, 0x07);
         
         i = usb_control_msg (serial->dev, usb_rcvctrlpipe (serial->dev, 0),
                              GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE,
@@ -828,6 +827,7 @@ static void pl2303_update_line_status(struct usb_serial_port *port,
         spin_lock_irqsave(&priv->lock, flags);
         priv->line_status = data[status_idx];
         spin_unlock_irqrestore(&priv->lock, flags);
+        wake_up_interruptible (&priv->delta_msr_wait);
 
 exit:
         return;
diff --git a/drivers/usb/serial/pl2303.h b/drivers/usb/serial/pl2303.h
index 9bc4755162ad..77901d143979 100644
--- a/drivers/usb/serial/pl2303.h
+++ b/drivers/usb/serial/pl2303.h
@@ -75,3 +75,7 @@
 /* Leadtek GPS 9531 (ID 0413:2101) */
 #define LEADTEK_VENDOR_ID       0x0413
 #define LEADTEK_9531_PRODUCT_ID 0x2101
+
+/* USB GSM cable from Speed Dragon Multimedia, Ltd */
+#define SPEEDDRAGON_VENDOR_ID   0x0e55
+#define SPEEDDRAGON_PRODUCT_ID  0x110b
diff --git a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c
index c18db3257073..c3a2071b802d 100644
--- a/drivers/usb/serial/ti_usb_3410_5052.c
+++ b/drivers/usb/serial/ti_usb_3410_5052.c
@@ -416,12 +416,11 @@ static int ti_startup(struct usb_serial *serial)
             dev->actconfig->desc.bConfigurationValue);
 
         /* create device structure */
-        tdev = kmalloc(sizeof(struct ti_device), GFP_KERNEL);
+        tdev = kzalloc(sizeof(struct ti_device), GFP_KERNEL);
         if (tdev == NULL) {
                 dev_err(&dev->dev, "%s - out of memory\n", __FUNCTION__);
                 return -ENOMEM;
         }
-        memset(tdev, 0, sizeof(struct ti_device));
         sema_init(&tdev->td_open_close_sem, 1);
         tdev->td_serial = serial;
         usb_set_serial_data(serial, tdev);
diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c
index b5c96e74a903..097f4e8488fe 100644
--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -564,12 +564,11 @@ static struct usb_serial * create_serial (struct usb_device *dev,
 {
         struct usb_serial *serial;
 
-        serial = kmalloc (sizeof (*serial), GFP_KERNEL);
+        serial = kzalloc(sizeof(*serial), GFP_KERNEL);
         if (!serial) {
                 dev_err(&dev->dev, "%s - out of memory\n", __FUNCTION__);
                 return NULL;
         }
-        memset (serial, 0, sizeof(*serial));
         serial->dev = usb_get_dev(dev);
         serial->type = driver;
         serial->interface = interface;
@@ -778,10 +777,9 @@ int usb_serial_probe(struct usb_interface *interface,
         serial->num_port_pointers = max_endpoints;
         dbg("%s - setting up %d port structures for this device", __FUNCTION__, max_endpoints);
         for (i = 0; i < max_endpoints; ++i) {
-                port = kmalloc(sizeof(struct usb_serial_port), GFP_KERNEL);
+                port = kzalloc(sizeof(struct usb_serial_port), GFP_KERNEL);
                 if (!port)
                         goto probe_error;
-                memset(port, 0x00, sizeof(struct usb_serial_port));
                 port->number = i + serial->minor;
                 port->serial = serial;
                 spin_lock_init(&port->lock);
diff --git a/drivers/usb/serial/visor.c b/drivers/usb/serial/visor.c
index 11a48d874752..f5c3841d4843 100644
--- a/drivers/usb/serial/visor.c
+++ b/drivers/usb/serial/visor.c
@@ -763,10 +763,9 @@ static int generic_startup(struct usb_serial *serial)
         int i;
 
         for (i = 0; i < serial->num_ports; ++i) {
-                priv = kmalloc (sizeof(*priv), GFP_KERNEL);
+                priv = kzalloc (sizeof(*priv), GFP_KERNEL);
                 if (!priv)
                         return -ENOMEM;
-                memset (priv, 0x00, sizeof(*priv));
                 spin_lock_init(&priv->lock);
                 usb_set_serial_port_data(serial->port[i], priv);
         }
diff --git a/drivers/usb/storage/datafab.c b/drivers/usb/storage/datafab.c
index 54e3e6c7ecd8..01d8971ad7db 100644
--- a/drivers/usb/storage/datafab.c
+++ b/drivers/usb/storage/datafab.c
@@ -512,13 +512,12 @@ int datafab_transport(struct scsi_cmnd * srb, struct us_data *us)
         };
 
         if (!us->extra) {
-                us->extra = kmalloc(sizeof(struct datafab_info), GFP_NOIO);
+                us->extra = kzalloc(sizeof(struct datafab_info), GFP_NOIO);
                 if (!us->extra) {
                         US_DEBUGP("datafab_transport:  Gah! "
                                   "Can't allocate storage for Datafab info struct!\n");
                         return USB_STOR_TRANSPORT_ERROR;
                 }
-                memset(us->extra, 0, sizeof(struct datafab_info));
                 us->extra_destructor = datafab_info_destructor;
                 ((struct datafab_info *)us->extra)->lun = -1;
         }
diff --git a/drivers/usb/storage/isd200.c b/drivers/usb/storage/isd200.c
index ecb328aa9ea1..6831dca93c1b 100644
--- a/drivers/usb/storage/isd200.c
+++ b/drivers/usb/storage/isd200.c
@@ -1361,21 +1361,19 @@ static int isd200_init_info(struct us_data *us)
         struct isd200_info *info;
 
         info = (struct isd200_info *)
-                        kmalloc(sizeof(struct isd200_info), GFP_KERNEL);
+                        kzalloc(sizeof(struct isd200_info), GFP_KERNEL);
         if (!info)
                 retStatus = ISD200_ERROR;
         else {
-                memset(info, 0, sizeof(struct isd200_info));
                 info->id = (struct hd_driveid *)
-                                kmalloc(sizeof(struct hd_driveid), GFP_KERNEL);
+                                kzalloc(sizeof(struct hd_driveid), GFP_KERNEL);
                 info->RegsBuf = (unsigned char *)
                                 kmalloc(sizeof(info->ATARegs), GFP_KERNEL);
                 if (!info->id || !info->RegsBuf) {
                         isd200_free_info_ptrs(info);
                         kfree(info);
                         retStatus = ISD200_ERROR;
-                } else
-                        memset(info->id, 0, sizeof(struct hd_driveid));
+                }
         }
 
         if (retStatus == ISD200_GOOD) {
@@ -1384,7 +1382,7 @@ static int isd200_init_info(struct us_data *us)
         } else
                 US_DEBUGP("ERROR - kmalloc failure\n");
 
-        return(retStatus);
+        return retStatus;
 }
 
 /**************************************************************************
diff --git a/drivers/usb/storage/jumpshot.c b/drivers/usb/storage/jumpshot.c
index aff9d51c327c..5031aa98f6a9 100644
--- a/drivers/usb/storage/jumpshot.c
+++ b/drivers/usb/storage/jumpshot.c
@@ -441,12 +441,11 @@ int jumpshot_transport(struct scsi_cmnd * srb, struct us_data *us)
         };
 
         if (!us->extra) {
-                us->extra = kmalloc(sizeof(struct jumpshot_info), GFP_NOIO);
+                us->extra = kzalloc(sizeof(struct jumpshot_info), GFP_NOIO);
                 if (!us->extra) {
                         US_DEBUGP("jumpshot_transport:  Gah! Can't allocate storage for jumpshot info struct!\n");
                         return USB_STOR_TRANSPORT_ERROR;
                 }
-                memset(us->extra, 0, sizeof(struct jumpshot_info));
                 us->extra_destructor = jumpshot_info_destructor;
         }
 
diff --git a/drivers/usb/storage/scsiglue.c b/drivers/usb/storage/scsiglue.c
index 4ef5527028c5..5f11e19eaae3 100644
--- a/drivers/usb/storage/scsiglue.c
+++ b/drivers/usb/storage/scsiglue.c
@@ -47,6 +47,7 @@
 
 #include <linux/slab.h>
 #include <linux/module.h>
+#include <linux/mutex.h>
 
 #include <scsi/scsi.h>
 #include <scsi/scsi_cmnd.h>
@@ -271,9 +272,9 @@ static int device_reset(struct scsi_cmnd *srb)
         US_DEBUGP("%s called\n", __FUNCTION__);
 
         /* lock the device pointers and do the reset */
-        down(&(us->dev_semaphore));
+        mutex_lock(&(us->dev_mutex));
         result = us->transport_reset(us);
-        up(&(us->dev_semaphore));
+        mutex_unlock(&us->dev_mutex);
 
         return result < 0 ? FAILED : SUCCESS;
 }
@@ -286,9 +287,9 @@ static int bus_reset(struct scsi_cmnd *srb)
 
         US_DEBUGP("%s called\n", __FUNCTION__);
 
-        down(&(us->dev_semaphore));
+        mutex_lock(&(us->dev_mutex));
         result = usb_stor_port_reset(us);
-        up(&(us->dev_semaphore));
+        mutex_unlock(&us->dev_mutex);
 
         return result < 0 ? FAILED : SUCCESS;
 }
diff --git a/drivers/usb/storage/sddr55.c b/drivers/usb/storage/sddr55.c
index 8451779f4269..0b1b5b59ca7b 100644
--- a/drivers/usb/storage/sddr55.c
+++ b/drivers/usb/storage/sddr55.c
@@ -751,11 +751,10 @@ int sddr55_transport(struct scsi_cmnd *srb, struct us_data *us)
         struct sddr55_card_info *info;
 
         if (!us->extra) {
-                us->extra = kmalloc(
+                us->extra = kzalloc(
                         sizeof(struct sddr55_card_info), GFP_NOIO);
                 if (!us->extra)
                         return USB_STOR_TRANSPORT_ERROR;
-                memset(us->extra, 0, sizeof(struct sddr55_card_info));
                 us->extra_destructor = sddr55_card_info_destructor;
         }
 
diff --git a/drivers/usb/storage/shuttle_usbat.c b/drivers/usb/storage/shuttle_usbat.c
index fea176d7e79a..f2bc5c9e23d5 100644
--- a/drivers/usb/storage/shuttle_usbat.c
+++ b/drivers/usb/storage/shuttle_usbat.c
@@ -1318,12 +1318,11 @@ int init_usbat(struct us_data *us)
         unsigned char subcountL = USBAT_ATA_LBA_ME;
         unsigned char *status = us->iobuf;
 
-        us->extra = kmalloc(sizeof(struct usbat_info), GFP_NOIO);
+        us->extra = kzalloc(sizeof(struct usbat_info), GFP_NOIO);
         if (!us->extra) {
                 US_DEBUGP("init_usbat: Gah! Can't allocate storage for usbat info struct!\n");
                 return 1;
         }
-        memset(us->extra, 0, sizeof(struct usbat_info));
         info = (struct usbat_info *) (us->extra);
 
         /* Enable peripheral control signals */
diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h
index 31ca92056c27..c4a9dcff5f2b 100644
--- a/drivers/usb/storage/unusual_devs.h
+++ b/drivers/usb/storage/unusual_devs.h
@@ -62,6 +62,13 @@ UNUSUAL_DEV(  0x03ee, 0x6901, 0x0000, 0x0100,
                 US_SC_DEVICE, US_PR_DEVICE, NULL,
                 US_FL_SINGLE_LUN ),
 
+/* Reported by Rodolfo Quesada <rquesada@roqz.net> */
+UNUSUAL_DEV(  0x03ee, 0x6906, 0x0003, 0x0003,
+                "VIA Technologies Inc.",
+                "Mitsumi multi cardreader",
+                US_SC_DEVICE, US_PR_DEVICE, NULL,
+                US_FL_IGNORE_RESIDUE ),
+
 UNUSUAL_DEV(  0x03f0, 0x0107, 0x0200, 0x0200, 
                 "HP",
                 "CD-Writer+",
@@ -120,6 +127,12 @@ UNUSUAL_DEV(  0x0419, 0xaaf6, 0x0100, 0x0100,
                 US_SC_DEVICE, US_PR_DEVICE, NULL,
                 US_FL_IGNORE_RESIDUE ),
 
+/* Reported by Pete Zaitcev <zaitcev@redhat.com>, bz#176584 */
+UNUSUAL_DEV(  0x0420, 0x0001, 0x0100, 0x0100,
+                "GENERIC", "MP3 PLAYER", /* MyMusix PD-205 on the outside. */
+                US_SC_DEVICE, US_PR_DEVICE, NULL,
+                US_FL_IGNORE_RESIDUE ),
+
 /* Reported by Olaf Hering <olh@suse.de> from novell bug #105878 */
 UNUSUAL_DEV(  0x0424, 0x0fdc, 0x0210, 0x0210,
                 "SMSC",
@@ -760,12 +773,19 @@ UNUSUAL_DEV(  0x069b, 0x3004, 0x0001, 0x0001,
                 US_SC_DEVICE, US_PR_DEVICE, NULL,
                 US_FL_FIX_CAPACITY ),
 
-UNUSUAL_DEV(  0x0781, 0x0001, 0x0200, 0x0200, 
+/* Submitted by Roman Hodek <roman@hodek.net> */
+UNUSUAL_DEV(  0x0781, 0x0001, 0x0200, 0x0200,
                 "Sandisk",
                 "ImageMate SDDR-05a",
                 US_SC_SCSI, US_PR_CB, NULL,
                 US_FL_SINGLE_LUN ),
 
+UNUSUAL_DEV(  0x0781, 0x0002, 0x0009, 0x0009,
+                "SanDisk Corporation",
+                "ImageMate CompactFlash USB",
+                US_SC_DEVICE, US_PR_DEVICE, NULL,
+                US_FL_FIX_CAPACITY ),
+
 #ifdef CONFIG_USB_STORAGE_USBAT
 UNUSUAL_DEV(  0x0781, 0x0005, 0x0005, 0x0005,
                 "Sandisk",
@@ -1073,6 +1093,16 @@ UNUSUAL_DEV( 0x0c0b, 0xa109, 0x0000, 0xffff,
                         0),
 #endif
 
+/*
+ * Pete Zaitcev <zaitcev@yahoo.com>, bz#164688.
+ * The device blatantly ignores LUN and returns 1 in GetMaxLUN.
+ */
+UNUSUAL_DEV( 0x0c45, 0x1060, 0x0100, 0x0100,
+                "Unknown",
+                "Unknown",
+                US_SC_DEVICE, US_PR_DEVICE, NULL,
+                US_FL_SINGLE_LUN ),
+
 /* Submitted by Joris Struyve <joris@struyve.be> */
 UNUSUAL_DEV( 0x0d96, 0x410a, 0x0001, 0xffff,
                 "Medion",
diff --git a/drivers/usb/storage/usb.c b/drivers/usb/storage/usb.c
index dbcf23980ff1..dd108634348e 100644
--- a/drivers/usb/storage/usb.c
+++ b/drivers/usb/storage/usb.c
@@ -55,6 +55,7 @@
 #include <linux/init.h>
 #include <linux/slab.h>
 #include <linux/kthread.h>
+#include <linux/mutex.h>
 
 #include <scsi/scsi.h>
 #include <scsi/scsi_cmnd.h>
@@ -188,7 +189,7 @@ static int storage_suspend(struct usb_interface *iface, pm_message_t message)
         struct us_data *us = usb_get_intfdata(iface);
 
         /* Wait until no command is running */
-        down(&us->dev_semaphore);
+        mutex_lock(&us->dev_mutex);
 
         US_DEBUGP("%s\n", __FUNCTION__);
         if (us->suspend_resume_hook)
@@ -198,7 +199,7 @@ static int storage_suspend(struct usb_interface *iface, pm_message_t message)
         /* When runtime PM is working, we'll set a flag to indicate
          * whether we should autoresume when a SCSI request arrives. */
 
-        up(&us->dev_semaphore);
+        mutex_unlock(&us->dev_mutex);
         return 0;
 }
 
@@ -206,14 +207,14 @@ static int storage_resume(struct usb_interface *iface)
 {
         struct us_data *us = usb_get_intfdata(iface);
 
-        down(&us->dev_semaphore);
+        mutex_lock(&us->dev_mutex);
 
         US_DEBUGP("%s\n", __FUNCTION__);
         if (us->suspend_resume_hook)
                 (us->suspend_resume_hook)(us, US_RESUME);
         iface->dev.power.power_state.event = PM_EVENT_ON;
 
-        up(&us->dev_semaphore);
+        mutex_unlock(&us->dev_mutex);
         return 0;
 }
 
@@ -276,12 +277,12 @@ static int usb_stor_control_thread(void * __us)
                 US_DEBUGP("*** thread awakened.\n");
 
                 /* lock the device pointers */
-                down(&(us->dev_semaphore));
+                mutex_lock(&(us->dev_mutex));
 
                 /* if the device has disconnected, we are free to exit */
                 if (test_bit(US_FLIDX_DISCONNECTING, &us->flags)) {
                         US_DEBUGP("-- exiting\n");
-                        up(&(us->dev_semaphore));
+                        mutex_unlock(&us->dev_mutex);
                         break;
                 }
 
@@ -370,7 +371,7 @@ SkipForAbort:
                 scsi_unlock(host);
 
                 /* unlock the device pointers */
-                up(&(us->dev_semaphore));
+                mutex_unlock(&us->dev_mutex);
         } /* for (;;) */
 
         scsi_host_put(host);
@@ -815,8 +816,8 @@ static void quiesce_and_remove_host(struct us_data *us)
          * The thread will exit when it sees the DISCONNECTING flag. */
 
         /* Wait for the current command to finish, then remove the host */
-        down(&us->dev_semaphore);
-        up(&us->dev_semaphore);
+        mutex_lock(&us->dev_mutex);
+        mutex_unlock(&us->dev_mutex);
 
         /* queuecommand won't accept any new commands and the control
          * thread won't execute a previously-queued command.  If there
@@ -870,9 +871,9 @@ retry:
                 /* For bulk-only devices, determine the max LUN value */
                 if (us->protocol == US_PR_BULK &&
                                 !(us->flags & US_FL_SINGLE_LUN)) {
-                        down(&us->dev_semaphore);
+                        mutex_lock(&us->dev_mutex);
                         us->max_lun = usb_stor_Bulk_max_lun(us);
-                        up(&us->dev_semaphore);
+                        mutex_unlock(&us->dev_mutex);
                 }
                 scsi_scan_host(us_to_host(us));
                 printk(KERN_DEBUG "usb-storage: device scan complete\n");
@@ -912,7 +913,7 @@ static int storage_probe(struct usb_interface *intf,
 
         us = host_to_us(host);
         memset(us, 0, sizeof(struct us_data));
-        init_MUTEX(&(us->dev_semaphore));
+        mutex_init(&(us->dev_mutex));
         init_MUTEX_LOCKED(&(us->sema));
         init_completion(&(us->notify));
         init_waitqueue_head(&us->delay_wait);
diff --git a/drivers/usb/storage/usb.h b/drivers/usb/storage/usb.h
index 7259fd1f6b0d..009fb0953a56 100644
--- a/drivers/usb/storage/usb.h
+++ b/drivers/usb/storage/usb.h
@@ -49,6 +49,7 @@
 #include <linux/blkdev.h>
 #include <linux/smp_lock.h>
 #include <linux/completion.h>
+#include <linux/mutex.h>
 #include <scsi/scsi_host.h>
 
 struct us_data;
@@ -103,9 +104,9 @@ typedef void (*pm_hook)(struct us_data *, int);	/* power management hook */
 struct us_data {
         /* The device we're working with
          * It's important to note:
-         *    (o) you must hold dev_semaphore to change pusb_dev
+         *    (o) you must hold dev_mutex to change pusb_dev
          */
-        struct semaphore        dev_semaphore;   /* protect pusb_dev */
+        struct mutex            dev_mutex;       /* protect pusb_dev */
         struct usb_device       *pusb_dev;       /* this usb_device */
         struct usb_interface    *pusb_intf;      /* this interface */
         struct us_unusual_dev   *unusual_dev;    /* device-filter entry     */