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| author | Jayakrishnan Memana <jayakrishnan.memana@maxim-ic.com> | 2012-07-15 10:54:03 -0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-09-14 10:00:20 -0700 |
| commit | 190d60406f1e111bd212e271076bdab9e104ebe6 (patch) | |
| tree | 2f1a52e9ac44960821dbcaba4e14dd294a14dbf1 /drivers | |
| parent | ebad30a797a5e5093d69e39bc046edab9452fe00 (diff) | |
| download | linux-3.10-190d60406f1e111bd212e271076bdab9e104ebe6.tar.gz linux-3.10-190d60406f1e111bd212e271076bdab9e104ebe6.tar.bz2 linux-3.10-190d60406f1e111bd212e271076bdab9e104ebe6.zip | |
uvcvideo: Reset the bytesused field when recycling an erroneous buffer
commit 8a3f0ede2b3f5477122060af1a816c6bbf09fcd2 upstream.
Buffers marked as erroneous are recycled immediately by the driver if
the nodrop module parameter isn't set. The buffer payload size is reset
to 0, but the buffer bytesused field isn't. This results in the buffer
being immediately considered as complete, leading to an infinite loop in
interrupt context.
Fix the problem by resetting the bytesused field when recycling the
buffer.
Signed-off-by: Jayakrishnan Memana <jayakrishnan.memana@maxim-ic.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/media/video/uvc/uvc_queue.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/media/video/uvc/uvc_queue.c b/drivers/media/video/uvc/uvc_queue.c index 8f54e24e3f3..4261bf23193 100644 --- a/drivers/media/video/uvc/uvc_queue.c +++ b/drivers/media/video/uvc/uvc_queue.c @@ -355,6 +355,7 @@ struct uvc_buffer *uvc_queue_next_buffer(struct uvc_video_queue *queue, if ((queue->flags & UVC_QUEUE_DROP_CORRUPTED) && buf->error) { buf->error = 0; buf->state = UVC_BUF_STATE_QUEUED; + buf->bytesused = 0; vb2_set_plane_payload(&buf->buf, 0, 0); return buf; } |