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media: videobuf2-core: check for q->error in vb2_core_qbuf()

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[ Upstream commit b509d733d3 ]

The vb2_core_qbuf() function didn't check if q->error was set. It is
checked in __buf_prepare(), but that function isn't called if the buffer
was already prepared before with VIDIOC_PREPARE_BUF.

So check it at the start of vb2_core_qbuf() as well.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Hans Verkuil
2018-07-05 04:25:19 -04:00
committed by Greg Kroah-Hartman
parent 9b43283036
commit 5b253f7420
1 changed files with 5 additions and 0 deletions
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5
drivers/media/v4l2-core/videobuf2-core.c
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@@ -1373,6 +1373,11 @@ int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb)
struct vb2_buffer *vb;
int ret;
if (q->error) {
dprintk(1, "fatal error occurred on queue\n");
return -EIO;
}
vb = q->bufs[index];
switch (vb->state) {