[PATCH] DMA: PL330: allow submitting 2 requests at a time

[Vinod Koul]

On Wed, Feb 13, 2013 at 04:13:14PM +0530, Jassi Brar wrote:
> Fix the logic to allow mc programming of second transfer after first
> has been done, by removing immediate return upon success and iterating
> until we detect QFull or DMAC dying.
This is a fix, should be sent to stable too?

--
~Vinod
> 
> Reported-by: Alvaro Moran <dirac3000 at gmail.com>
> Tested-by: Alvaro Moran <dirac3000 at gmail.com>
> Signed-off-by: Jassi Brar <jaswinder.singh at linaro.org>
> ---
>  drivers/dma/pl330.c |    3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
> index 80680ee..c1a867e 100644
> --- a/drivers/dma/pl330.c
> +++ b/drivers/dma/pl330.c
> @@ -2282,13 +2282,12 @@ static inline void fill_queue(struct dma_pl330_chan *pch)
>  
>  		/* If already submitted */
>  		if (desc->status == BUSY)
> -			break;
> +			continue;
>  
>  		ret = pl330_submit_req(pch->pl330_chid,
>  						&desc->req);
>  		if (!ret) {
>  			desc->status = BUSY;
> -			break;
>  		} else if (ret == -EAGAIN) {
>  			/* QFull or DMAC Dying */
>  			break;
> -- 
> 1.7.10.4
>