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| author | Laurent Pinchart <laurent.pinchart@skynet.be> | 2009-02-14 23:39:08 +0100 |
|---|---|---|
| committer | Laurent Pinchart <laurent.pinchart@skynet.be> | 2009-02-14 23:39:08 +0100 |
| commit | e2a760f26ff7124de2bc6bed4647962dd7078d1b (patch) | |
| tree | 28066a051388762e4b4caa642da63d201dc6ba18 /linux/drivers/media/video/uvc | |
| parent | bdff40c8e0a3b0971c67f28db1b0f9b2fe581313 (diff) | |
| download | mediapointer-dvb-s2-e2a760f26ff7124de2bc6bed4647962dd7078d1b.tar.gz mediapointer-dvb-s2-e2a760f26ff7124de2bc6bed4647962dd7078d1b.tar.bz2 | |
uvcvideo: Ignore empty bulk URBs
From: Laurent Pinchart <laurent.pinchart@skynet.be>
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.
Priority: normal
Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
Diffstat (limited to 'linux/drivers/media/video/uvc')
| -rw-r--r-- | linux/drivers/media/video/uvc/uvc_video.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/linux/drivers/media/video/uvc/uvc_video.c b/linux/drivers/media/video/uvc/uvc_video.c index a4034ccb2..328910855 100644 --- a/linux/drivers/media/video/uvc/uvc_video.c +++ b/linux/drivers/media/video/uvc/uvc_video.c @@ -540,6 +540,9 @@ static void uvc_video_decode_bulk(struct urb *urb, u8 *mem; int len, ret; + if (urb->actual_length == 0) + return; + mem = urb->transfer_buffer; len = urb->actual_length; video->bulk.payload_size += len; |