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path: root/drivers/media/video/uvc
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2009-04-06V4L/DVB (11439): UVC: uvc_status_cleanup(): undefined reference to ↵Randy Dunlap
`input_unregister_device' Fix build errors when USB_VIDEO_CLASS=y and INPUT=m. Fixes kernel bugzilla #12671. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Acked-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-03-30V4L/DVB (11293): uvcvideo: Add zero fill for VIDIOC_ENUM_FMTMárton Németh
When enumerating formats with VIDIOC_ENUM_FMT the uvcvideo driver does not fill the reserved fields of the struct v4l2_fmtdesc with zeros as required by V4L2 API revision 0.24 [1]. Add the missing initializations. The patch was tested with v4l-test 0.10 [2] with CNF7129 webcam found on EeePC 901. References: [1] V4L2 API specification, revision 0.24 http://v4l2spec.bytesex.org/spec/r8367.htm [2] v4l-test: Test environment for Video For Linux Two API http://v4l-test.sourceforge.net/ Signed-off-by: Márton Németh <nm127@freemail.hu> Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-03-30V4L/DVB (11292): uvcvideo: Add support for Syntek cameras found in JAOtech ↵Laurent Pinchart
Smart Terminals Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-03-30V4L/DVB (10652): uvcvideo: Add quirk to override wrong bandwidth value for ↵Laurent Pinchart
Vimicro devices At least 3 Vimicro cameras (0x332d, 0x3410 and 0x3420) fail to return correct bandwidth information. The first model rounds the value provided by the host to the nearest supported packet size, while the other two always request the maximum bandwidth. Introduce a device quirk to override the value returned by the device with an estimated bandwidth computed by the driver from the frame size and frame rate, and enable it for all Vimicro cameras. Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-03-30V4L/DVB (10651): uvcvideo: Ignore empty bulk URBsLaurent Pinchart
Devices may send a zero-length packet to signal the end of a bulk payload. If the payload size is a multiple of the URB size the zero-length packet will be received by the URB completion handler. Handle this by ignoring all empty URBs. Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-03-30V4L/DVB (10650): uvcvideo: Initialize streaming parameters with the probe ↵Laurent Pinchart
control value The UVC specification requires SET_CUR requests on the streaming commit control to use values retrieved from a successful GET_CUR request on the probe control. Initialize streaming parameters with the probe control current value to make sure the driver always complies. Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-03-30V4L/DVB (10308): uvcvideo: use usb_make_path to report bus infoThierry MERLE
usb_make_path reports canonical bus info. Use it when reporting bus info in VIDIOC_QUERYCAP. Signed-off-by: Thierry MERLE <thierry.merle@free.fr> Acked-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-03-30V4L/DVB (10296): uvcvideo: Fix memory leak in input device handlingLaurent Pinchart
The dynamically allocated input_dev->phys buffer isn't freed when unregistering the device. As the input layer doesn't provide any release callback, use a fixed-size buffer inside the uvc_device structure. Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-03-30V4L/DVB (10295): uvcvideo: Retry URB buffers allocation when the system is ↵Laurent Pinchart
low on memory. URB buffers for video transfers are sized to UVC_MAX_PACKETS bulk/isochronous packets by default. If the system is too low on memory try successively smaller numbers of packets until allocation succeeds. Tested-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Reviewed-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-03-30V4L/DVB (10294): uvcvideo: Add support for the Alcor Micro AU3820 chipset.Laurent Pinchart
The Alcor Micro AU3820 chipset (found in the Future Boy PC USB webcam) requires the MINMAX quirk. Add a corresponding entry in the device IDs list. Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-03-30V4L/DVB (10293): uvcvideo: replace strn{cpy,cat} with strl{cpy,cat}.Laurent Pinchart
strncpy is unsafe as it doesn't append a terminating NUL character when the source string doesn't fit in the destination buffer. Replace it with strlcpy. strncat is misused as its size argument refers to the source string, not the destination buffer. Replace it with strlcat. Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-03-02Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: elantech - touchpad driver miss-recognising logitech mice Input: synaptics - ensure we reset the device on resume Input: usbtouchscreen - fix eGalax HID ignoring Input: ambakmi - fix timeout handling in amba_kmi_write() Input: pxa930_trkball - fix write timeout handling Input: struct device - replace bus_id with dev_name(), dev_set_name() Input: bf54x-keys - fix debounce time validation Input: spitzkbd - mark probe function as __devinit Input: omap-keypad - mark probe function as __devinit Input: corgi_ts - mark probe function as __devinit Input: corgikbd - mark probe function as __devinit Input: uvc - the button on the camera is KEY_CAMERA Input: psmouse - make MOUSE_PS2_LIFEBOOK depend on X86 Input: atkbd - make forced_release_keys[] static Input: usbtouchscreen - allow reporting calibrated data
2009-01-29V4L/DVB (10199): uvcvideo: Fix GET_DEF failure detection.Laurent Pinchart
Commit 44f0079ec74330b457d990072c13cbe28b0f1abf erroneously considers all GET_DEF requests as unsuccessful. Fix this by checking the request return value. Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-01-29V4L/DVB (10198): uvcvideo: Print the UVC version number in binary-coded decimal.Laurent Pinchart
The UVC specification release number is a binary-coded decimal number, print it as such. Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-01-29V4L/DVB (10197): uvcvideo: Whitespace and comments cleanup, copyright updates.Laurent Pinchart
Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-01-29V4L/DVB (10193): removed unused #include <version.h>'sHuang Weiyi
Removed unused #include <version.h>'s in files below, drivers/media/video/cs5345.c drivers/media/video/pwc/pwc-if.c drivers/media/video/saa717x.c drivers/media/video/upd64031a.c drivers/media/video/upd64083.c drivers/media/video/uvc/uvc_ctrl.c drivers/media/video/uvc/uvc_driver.c drivers/media/video/uvc/uvc_queue.c drivers/media/video/uvc/uvc_video.c drivers/media/video/uvc/uvc_status.c Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com> Acked-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-01-10Input: uvc - the button on the camera is KEY_CAMERABastien Nocera
Cameras should generate KEY_CAMERA, not BTN_0. Also call input_sync() on the device once the button has been pressed. Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2009-01-02V4L/DVB (10138): v4l2-ioctl: change to long return type to match unlocked_ioctl.Hans Verkuil
Since internal to v4l2 the ioctl prototype is the same regardless of it being called through .ioctl or .unlocked_ioctl, we need to convert it all to the long return type of unlocked_ioctl. Thanks to Jean-Francois Moine for posting an initial patch for this and thus bringing it to our attention. Cc: Jean-Francois Moine <moinejf@free.fr> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-01-02V4L/DVB (10135): v4l2: introduce v4l2_file_operations.Hans Verkuil
Introduce a struct v4l2_file_operations for v4l2 drivers. Remove the unnecessary inode argument. Move compat32 handling (and llseek) into the v4l2-dev core: this is now handled in the v4l2 core and no longer in the drivers themselves. Note that this changeset reverts an earlier patch that changed the return type of__video_ioctl2 from int to long. This change will be reinstated later in a much improved version. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-12-30V4L/DVB (10111a): usbvideo.h: remove an useless blank lineMauro Carvalho Chehab
This is needed to sync with the development tree. Probably, a merge conflict were solved by adding this blank line. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-12-30V4L/DVB (10104): uvcvideo: Add support for video output devicesLaurent Pinchart
Extend the range of supported UVC devices by allowing video output devices matching the following structure: TT_STREAMING -> VC_PROCESSING_UNIT -> VC_EXTENSION_UNIT{0,n} -> OTT_* Video output devices are reported with the V4L2_CAP_VIDEO_OUTPUT capability flag and are subject to the same restrictions as video input devices. Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-12-30V4L/DVB (10102): uvcvideo: Ignore interrupt endpoint for built-in iSight ↵Laurent Pinchart
webcams. Built-in iSight webcams have an interrupt endpoint but spit proprietary data that don't conform to the UVC status endpoint messages. Don't try to handle the interrupt endpoint for those cameras. Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-12-30V4L/DVB (10101): uvcvideo: Fix bulk URB processing when the header is erroneousLaurent Pinchart
When the first bulk URB of a video payload contains an erroneous header, or when no V4L2 buffer is available, the whole payload must be dropped. Change the skip logic to drop all bulk URBs until the end of the payload instead of the first one only. Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-12-30V4L/DVB (9903): uvcvideo: V4L2 zoom controls supportLaurent Pinchart
Add support for absolute and continuous zoom controls (mapped to absolute and relative UVC zoom controls). Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-12-30V4L/DVB (9902): uvcvideo: V4L2 privacy control supportLaurent Pinchart
Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-12-30V4L/DVB (9810): uvcvideo: Add a device quirk to prune bogus controls.Laurent Pinchart
Bogus controls currently include processing unit auto controls for which no corresponding manual control is available. Such auto controls make little sense if any, and are known to crash at least the SiGma Micro webcam. Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-12-30V4L/DVB (9809): uvcvideo: Add nodrop module parameter to turn incomplete ↵Laurent Pinchart
frame drop off. The driver drops incomplete uncompressed video frames to avoid confusing userspace with corrupt data. Add a nodrop module parameter to turn that behaviour off and make all frames available to userspace. Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-12-29V4L/DVB (9662): uvcvideo: Fix printk badness when printing ioctl namesLaurent Pinchart
Add a trailing newline character after calling v4l_printk_ioctl() to avoid messing the kernel log up and merge the uvc_v4l2_ioctl message with the ioctl name. Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-12-29V4L/DVB (9661): uvcvideo: Commit streaming parameters when enabling the ↵Laurent Pinchart
video stream Sonix-based cameras seem to require the host to commit video streaming parameters before selecting the alternate endpoint. While most applications issue a VIDIOC_S_FMT ioctl before starting streaming, this is not required by the V4L2 specification. The problem has been noticed on Ubuntu 8.10 with applications using libv4l. The library blocks VIDIOC_S_FMT calls when the requested format is identical to the currently selected format. As the driver commits video streaming parameters when initialising the device, only the first run of a libv4l-enabled application would succeed. For the sake of completeness, experiment showed that the camera keeps sending 12 bytes isochronous packets (header only, no data) without toggling the FID bit if video streaming parameters haven't been committed before selecting the alternate endpoint. Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-12-29V4L/DVB (9660): uvcvideo: Fix unaligned memory access.Michael Hennerich
Use the unaligned memory access macros when accessing unaligned memory. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-12-29V4L/DVB (9659): uvcvideo: Use {get|set}_unaligned_le32 macrosLaurent Pinchart
Replace combination of endianess conversion and unaligned access macros with {get|set}_unaligned_*. Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-12-29V4L/DVB (9570): uvcvideo: Handle failed video GET_{MIN|MAX|DEF} requests ↵Laurent Pinchart
more gracefully Failed requests will now generate a one-time warning message instead of the usual "Failed to query..." error, which should be more user-friendly. The driver will also recover automatically from failed GET_MIN/GET_MAX requests when the device is half-broken without requiring the MINMAX quirk (fully broken devices still need the quirk). Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-12-29V4L/DVB (9569): uvcvideo: Sort the frame descriptors during parsingLaurent Pinchart
The UVC specification does not require frame descriptors to be sorted by bFrameIndex. At least one camera (145f:013e) is known not to sort the descriptors properly, so they need to be sorted during parsing as the driver then accesses them by index. Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-12-29V4L/DVB (9568): uvcvideo: Add support for Lenovo Thinkpad SL500 integrated ↵Laurent Pinchart
webcam Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-12-29V4L/DVB (9567): uvcvideo: Add support for Samsung Q310 integrated webcamLaurent Pinchart
Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-12-29V4L/DVB (9503): v4l: remove inode argument from video_usercopyHans Verkuil
The inode argument was never used. Removing it from video_usercopy brings the function pointer type of video_usercopy in line with similar v4l2 functions, thus simplifying several drivers. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-10-21V4L/DVB (9330): Get rid of inode parameter at v4l_compat_translate_ioctl()Mauro Carvalho Chehab
The inode parameter at v4l_compat_translate_ioctl() were just passed over several places just to keep compatible with fops.ioctl. However, it weren't used anywere. This patch gets hid of this unused parameter. Cc: Laurent Pinchart <laurent.pinchart@skynet.be> Cc: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-10-13V4L/DVB (9169): uvcvideo: Support two new Bison Electronics webcams.Laurent Pinchart
This adds required quirks for the Compaq Presario B1200 and Acer Travelmate 7720 integrated webcams. Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-10-12V4L/DVB (9036): uvcvideo: Fix control cache access when setting composite ↵Laurent Pinchart
auto-update controls Auto-update controls are never marked is loaded to prevent uvc_get_ctrl from loading the control value from the cache. When setting a composite (mapped to several V4L2 controls) auto-update UVC control, the driver updates the control cache value before processing each V4L2 control, overwriting the previously set V4L2 control. This fixes the problem by marking all controls as loaded in uvc_set_ctrl regardless of their type and resetting the loaded flag in uvc_commit_ctrl for auto-update controls. Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-10-12V4L/DVB (9035): uvcvideo: Declare missing camera and processing unit controls.Laurent Pinchart
This declares all missing UVC camera and processing unit controls. V4L2 mappings are not supported yet for those controls. Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-10-12V4L/DVB:usbvideo:don't use part of buffer for USB transfer #4Ming Lei
The status[] is part of uvc_device structure. We can't make sure the address of status is at a cache-line boundary in all archs,so status[] might share a cache-line with some fields in uvc_structure. This can lead to some cache coherence issues(http://lwn.net/Articles/2265/). Use dynamically allocated buffer instead. Signed-off-by: Ming Lei <tom.leiming@gmail.com> Acked-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-10-12V4L/DVB (9031): uvcvideo: Fix incomplete frame drop when switching to a ↵Laurent Pinchart
variable size format. When streaming in a fixed size format the driver sets a flag in the uvc_queue structure to drop incomplete incoming frames. The flag wasn't cleared when switching to a variable size format, which resulted in a broken 'MJPEG after YUV'. Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-10-12V4L/DVB (9030): uvcvideo : Add support for Advent 4211 integrated webcamLaurent Pinchart
Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-10-12V4L/DVB (8847): uvcvideo: Add support for a Bison Electronics webcam found ↵Laurent Pinchart
in the Fujitsu Amilo SI2636. Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-10-12V4L/DVB (8846): uvcvideo: Supress spurious "EOF in empty payload" trace messageLaurent Pinchart
Pass the payload size instead of the header size to uvc_video_decode_end() to avoid generating an extra trace message for each frame. Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-10-12V4L/DVB (8788): v4l: replace video_get_drvdata(video_devdata(filp)) with ↵Hans Verkuil
video_drvdata(filp) Use the new video_drvdata(filp) function where it is safe to do so. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-10-12V4L/DVB (8754): uvcvideo: Implement the USB power management reset_resume ↵Laurent Pinchart
method. When a suspended device has been reset instead of being resumed, USB core calls the reset_resume method if available instead of unbinding and rebinding the device. This patch implements reset_resume by reusing the current resume implementation and simplifies the resume method by skipping the controls restore stage. Resuming from autosuspend should be faster. Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-10-12V4L/DVB (8729): Use DIV_ROUND_UPJulia Lawall
The kernel.h macro DIV_ROUND_UP performs the computation (((n) + (d) - 1) / (d)) but is perhaps more readable. An extract of the semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @haskernel@ @@ @depends on haskernel@ expression n,d; @@ ( - (n + d - 1) / d + DIV_ROUND_UP(n,d) | - (n + (d - 1)) / d + DIV_ROUND_UP(n,d) ) @depends on haskernel@ expression n,d; @@ - DIV_ROUND_UP((n),d) + DIV_ROUND_UP(n,d) @depends on haskernel@ expression n,d; @@ - DIV_ROUND_UP(n,(d)) + DIV_ROUND_UP(n,d) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-10-04V4L/DVB (9053): fix buffer overflow in uvc-videoRalph Loader
There is a buffer overflow in drivers/media/video/uvc/uvc_ctrl.c: INFO: 0xf2c5ce08-0xf2c5ce0b. First byte 0xa1 instead of 0xcc INFO: Allocated in uvc_query_v4l2_ctrl+0x3c/0x239 [uvcvideo] age=13 cpu=1 pid=4975 ... A fixed size 8-byte buffer is allocated, and a variable size field is read into it; there is no particular bound on the size of the field (it is dependent on hardware and configuration) and it can overflow [also verified by inserting printk's.] The patch attempts to size the buffer to the correctly. Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-08-06V4L/DVB (8617): uvcvideo: don't use stack-based buffers for USB transfers.Laurent Pinchart
Data buffers on the stack are not allowed for USB I/O. Use dynamically allocated buffers instead. Signed-off-by: Bruce Schmid <duck@freescale.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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