On 11/17/17 19:23, Ian Jamison wrote:
> It is possible to call STREAMON without the minimum number of
> buffers queued. In this case the vb2_queue state will be set to
> streaming but the start_streaming vb2_op will not be called.
> Later when enough buffers are queued, start_streaming will
> be called but vb2_is_streaming will already return true.
>
> Signed-off-by: Ian Jamison <ian....@arkver.com>
> ---
> drivers/staging/media/imx/imx-media-capture.c | 3 ---
> 1 file changed, 3 deletions(-)
>
> diff --git a/drivers/staging/media/imx/imx-media-capture.c
> b/drivers/staging/media/imx/imx-media-capture.c
> index ddab4c249da2..34b492c2419c 100644
> --- a/drivers/staging/media/imx/imx-media-capture.c
> +++ b/drivers/staging/media/imx/imx-media-capture.c
> @@ -449,9 +449,6 @@ static int capture_start_streaming(struct vb2_queue *vq,
> unsigned int count)
> unsigned long flags;
> int ret;
>
> - if (vb2_is_streaming(vq))
> - return 0;
> -
> ret = imx_media_pipeline_set_stream(priv->md, &priv->src_sd->entity,
> true);
> if (ret) {
>
Can you also remove this from capture_stop_streaming:
if (!vb2_is_streaming(vq))
return;
Both checks are wrong and pointless. The vb2 core will do all the right checks
and this shouldn't be done again (and wrongly) in the driver.
Regards,
Hans
