- 01 7月, 2011 1 次提交
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由 Sjoerd Simons 提交于
When freeing memory for the video buffers also remove them from the irq & main queues. This fixes an oops when doing the following: open ("/dev/video", ..) VIDIOC_REQBUFS VIDIOC_QBUF VIDIOC_REQBUFS close () As the second VIDIOC_REQBUFS will cause the list entries of the buffers to be cleared while they still hang around on the main and irc queues Signed-off-by: NSjoerd Simons <sjoerd.simons@collabora.co.uk> Acked-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com> Cc: stable@kernel.org Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
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- 20 5月, 2011 1 次提交
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由 Bob Liu 提交于
Add support to uvc driver for NOMMU arch including add function uvc_queue_get_unmapped_area() and make some changes in uvc_queue_mmap(). So that uvc camera can be used on nommu arch like blackfin. Signed-off-by: NBob Liu <lliubbo@gmail.com> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
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- 02 12月, 2010 2 次提交
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由 Laurent Pinchart 提交于
The mmap() implementation belongs to the video buffers queue, move it there. Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
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由 Laurent Pinchart 提交于
Callers outside uvc_queue.c should not be forced to lock/unlock the queue mutex manually. Move the mutex operations inside uvc_free_buffers(). Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
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- 21 10月, 2010 2 次提交
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由 Laurent Pinchart 提交于
Increase the sequence number of the v4l2_buffer structure regardless of any buffer states, so that discontinuous sequence numbers allow applications to detect lost video frames. Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
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由 Laurent Pinchart 提交于
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
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- 09 8月, 2010 1 次提交
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由 Laurent Pinchart 提交于
Corrupted video frames are dropped by default by the driver for uncompressed formats. Data corruption is not less problematic for compressed formats, so frame drop should be enabled by default for those formats as well. Mark buffers as faulty when an isochronous packet loss is detected for any format, or when the buffer length doesn't match the image size for uncompressed formats. Drop erroneous buffers regardless of whether the format is compressed or uncompressed. Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
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- 18 5月, 2010 1 次提交
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由 Laurent Pinchart 提交于
The V4L2 specification requires drivers to use the write events in the file operations poll handler for output devices. The uvcvideo driver erroneously used read events for all devices. Fix this. Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
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- 27 2月, 2010 1 次提交
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由 Laurent Pinchart 提交于
The realtime clock provided by do_gettimeofday() is affected by time jumps caused by NTP or DST. Furthermore, preliminary investigation showed that SMP systems the realtime clock is based on the CPU TSC, and those could get slightly out of sync, resulting in jitter in the timestamps depending on which processor handles the USB interrupts. Instead of the realtime clock, use a monotonic high resolution clock to timestamp the buffer. As this could in theory introduce a regression with some userspace applications expecting a realtime clock timestamp, add a module parameter to switch back to the realtime clock. Thanks to Paulo Assis for pointing out and investigating the issue. Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
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- 17 1月, 2010 1 次提交
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由 Laurent Pinchart 提交于
Buffers were marked as done before being removed from the IRQ queue. If a userspace application dequeued and requeued the buffer fast enough during that time window, the buffer could end up being deleted twice, generating an oops in interrupt context. Add a new state, UVC_BUF_STATE_READY, to mark buffers as ready for reuse but not yet removed from the queue, and transition to UVC_BUF_STATE_DONE only when the buffer is removed from the queue. Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
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- 17 6月, 2009 1 次提交
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由 Laurent Pinchart 提交于
Setting a new frame format or size will likely change the buffer size required to store a complete video frame. To avoid a buffer overflow, don't allow VIDIOC_S_FMT calls when video buffers are already allocated. Signed-off-by: NLaurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
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- 29 1月, 2009 2 次提交
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由 Laurent Pinchart 提交于
Signed-off-by: NLaurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
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由 Huang Weiyi 提交于
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: NHuang Weiyi <weiyi.huang@gmail.com> Acked-by: NLaurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
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- 30 12月, 2008 1 次提交
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由 Laurent Pinchart 提交于
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: NLaurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
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- 25 7月, 2008 1 次提交
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由 Andrea Righi 提交于
On 32-bit architectures PAGE_ALIGN() truncates 64-bit values to the 32-bit boundary. For example: u64 val = PAGE_ALIGN(size); always returns a value < 4GB even if size is greater than 4GB. The problem resides in PAGE_MASK definition (from include/asm-x86/page.h for example): #define PAGE_SHIFT 12 #define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT) #define PAGE_MASK (~(PAGE_SIZE-1)) ... #define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK) The "~" is performed on a 32-bit value, so everything in "and" with PAGE_MASK greater than 4GB will be truncated to the 32-bit boundary. Using the ALIGN() macro seems to be the right way, because it uses typeof(addr) for the mask. Also move the PAGE_ALIGN() definitions out of include/asm-*/page.h in include/linux/mm.h. See also lkml discussion: http://lkml.org/lkml/2008/6/11/237 [akpm@linux-foundation.org: fix drivers/media/video/uvc/uvc_queue.c] [akpm@linux-foundation.org: fix v850] [akpm@linux-foundation.org: fix powerpc] [akpm@linux-foundation.org: fix arm] [akpm@linux-foundation.org: fix mips] [akpm@linux-foundation.org: fix drivers/media/video/pvrusb2/pvrusb2-dvb.c] [akpm@linux-foundation.org: fix drivers/mtd/maps/uclinux.c] [akpm@linux-foundation.org: fix powerpc] Signed-off-by: NAndrea Righi <righi.andrea@gmail.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 20 7月, 2008 1 次提交
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由 Hans Verkuil 提交于
Also remove some blank lines that were used to split compat code at -devel tree. Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl> Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>
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- 01 7月, 2008 1 次提交
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由 Laurent Pinchart 提交于
This driver supports video input devices compliant with the USB Video Class specification. This means lots of currently manufactured webcams, and probably most of the future ones. Signed-off-by: NLaurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>
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