On Wed, Jul 20, 2016 at 12:07:55PM -0400, Javier Martinez Canillas wrote:
> 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@xxxxxxxxxxxxxxx>
>
> ---
>
> Changes in v2:
> - Use %u instead of %d (Sakari Ailus)
> - Include min_length (Sakari Ailus)
>
> drivers/media/v4l2-core/videobuf2-core.c | 6 ++++--
> 1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/v4l2-core/videobuf2-core.c b/drivers/media/v4l2-core/videobuf2-core.c
> index b6fbc04f9699..bbba50d6e1ad 100644
> --- a/drivers/media/v4l2-core/videobuf2-core.c
> +++ b/drivers/media/v4l2-core/videobuf2-core.c
> @@ -1227,8 +1227,10 @@ 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",
You shouldn't split strings. It breaks grep.
With that changed,
Acked-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
> + planes[plane].length, plane,
> + vb->planes[plane].min_length);
> dma_buf_put(dbuf);
> ret = -EINVAL;
> goto err;
--
Sakari Ailus
e-mail: sakari.ailus@xxxxxx XMPP: sailus@xxxxxxxxxxxxxx
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