Re: [PATCH] dmaengine: ste_dma40: do not remove descriptors forcyclic transfers

From: Vinod Koul
Date: Thu Feb 14 2013 - 09:27:55 EST


On Thu, Feb 14, 2013 at 10:03:10AM +0100, Fabio Baltieri wrote:
> Fix dma_tc_handle() to call d40_desc_remove() and d40_desc_done() only
> for non-cyclic transfers, as this was breaking ux500_pcm since
> introduced in:
>
> d49278e dmaengine: dma40: Add support to split up large elements
>
> Reported-by: Shreshtha Kumar Sahu <shreshthakumar.sahu@xxxxxxxxxxxxxx>
> Acked-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
> Signed-off-by: Fabio Baltieri <fabio.baltieri@xxxxxxxxxx>
> ---
>
> Hello Vinod,
>
> the bug fixed by this patch was around for some time, but the affected
> driver (ux500_pcm) will be enabled in next release cycle for other
> reasons so this patch can safely go on -next.
>
> Would you take it your tree?
Sure, applied thanks

--
~Vinod
>
> Thanks,
> Fabio
>
> drivers/dma/ste_dma40.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
> index ad860a2..1734fee 100644
> --- a/drivers/dma/ste_dma40.c
> +++ b/drivers/dma/ste_dma40.c
> @@ -1570,10 +1570,10 @@ static void dma_tc_handle(struct d40_chan *d40c)
> d40c->busy = false;
> pm_runtime_mark_last_busy(d40c->base->dev);
> pm_runtime_put_autosuspend(d40c->base->dev);
> - }
>
> - d40_desc_remove(d40d);
> - d40_desc_done(d40c, d40d);
> + d40_desc_remove(d40d);
> + d40_desc_done(d40c, d40d);
> + }
>
> d40c->pending_tx++;
> tasklet_schedule(&d40c->tasklet);
> --
> 1.7.12.1
>
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