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DMA: PL330: allow submitting 2 requests at a time 

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.

Reported-by: Alvaro Moran <dirac3000@gmail.com>
Tested-by: Alvaro Moran <dirac3000@gmail.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Jassi Brar 2013-02-13 16:13:14 +05:30 committed by Vinod Koul
parent 41ef2d5678
commit 30fb980b99
1 changed files with 1 additions and 2 deletions
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3
drivers/dma/pl330.c
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@ -2288,13 +2288,12 @@ 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;