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dmaengine: cppi41: fix cppi41_dma_tx_status() logic

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It makes sense to set residue when channel is in progress. Otherwise it
should be 0 since transfer is completed. Meanwhile this patch doesn't
prevent to set residue value anyway.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Andy Shevchenko 2017-03-16 16:18:44 +02:00 committed by Vinod Koul
parent 4f68b09ea3
commit a08f2673dd
1 changed files with 2 additions and 4 deletions
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6
drivers/dma/cppi41.c
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@ -420,11 +420,9 @@ static enum dma_status cppi41_dma_tx_status(struct dma_chan *chan,
struct cppi41_channel *c = to_cpp41_chan(chan);
enum dma_status ret;
/* lock */
ret = dma_cookie_status(chan, cookie, txstate);
if (txstate && ret == DMA_COMPLETE)
txstate->residue = c->residue;
/* unlock */
dma_set_residue(txstate, c->residue);
return ret;
}