Re: [PATCH v3 31/38] media: ti-vpe: cal: fix queuing of the initial buffer

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Hi Tomi,

Thank you for the patch.

On Mon, May 24, 2021 at 02:09:02PM +0300, Tomi Valkeinen wrote:
> When starting streaming the driver currently programs the buffer
> address to the CAL base-address register and assigns the buffer pointer
> to ctx->dma.pending. This is not correct, as the buffer is not
> "pending", but active, and causes the first buffer to be needlessly
> written twice.
> 
> Fix this by assigning the buffer pointer to ctx->dma.active.
> 
> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxxxxxxxxxxxx>

Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>

> ---
>  drivers/media/platform/ti-vpe/cal-video.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/media/platform/ti-vpe/cal-video.c b/drivers/media/platform/ti-vpe/cal-video.c
> index d06488cb8c36..efa08a9ccbd5 100644
> --- a/drivers/media/platform/ti-vpe/cal-video.c
> +++ b/drivers/media/platform/ti-vpe/cal-video.c
> @@ -731,7 +731,7 @@ static int cal_start_streaming(struct vb2_queue *vq, unsigned int count)
>  
>  	spin_lock_irq(&ctx->dma.lock);
>  	buf = list_first_entry(&ctx->dma.queue, struct cal_buffer, list);
> -	ctx->dma.pending = buf;
> +	ctx->dma.active = buf;
>  	list_del(&buf->list);
>  	spin_unlock_irq(&ctx->dma.lock);
>  

-- 
Regards,

Laurent Pinchart



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