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[media] vb2: include lengths in dmabuf qbuf debug message

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If the VIDIOC_QBUF ioctl fails due a wrong dmabuf length, it's
useful to get the invalid and minimum lengths as a debug info.

Before this patch:

vb2-core: __qbuf_dmabuf: invalid dmabuf length for plane 1

After this patch:

vb2-core: __qbuf_dmabuf: invalid dmabuf length 221248 for plane 1, minimum length 410880

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.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@s-opensource.com>
This commit is contained in:
Javier Martinez Canillas 2016-07-20 13:07:55 -03:00 committed by Mauro Carvalho Chehab
parent f223c30f1e
commit 1415072365
1 changed files with 4 additions and 2 deletions
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6
drivers/media/v4l2-core/videobuf2-core.c
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@ -1228,8 +1228,10 @@ static int __qbuf_dmabuf(struct vb2_buffer *vb, const void *pb)
planes[plane].length = dbuf->size;
if (planes[plane].length < vb->planes[plane].min_length) {
dprintk(1, "invalid dmabuf length for plane %d\n",
plane);
dprintk(1, "invalid dmabuf length %u for plane %d, "
"minimum length %u\n",
planes[plane].length, plane,
vb->planes[plane].min_length);
dma_buf_put(dbuf);
ret = -EINVAL;
goto err;