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dmaengine: zxdma: Fix off-by-one for testing valid pchan request

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The valid pchan range is 0 ~ d->dma_requests - 1.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Reviewed-by: Jun Nie <jun.nie@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Axel Lin 2015-09-26 17:15:47 +08:00 committed by Vinod Koul
parent 0be2136b67
commit aa3ee5f569
1 changed files with 1 additions and 1 deletions
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2
drivers/dma/zx296702_dma.c
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@ -739,7 +739,7 @@ static struct dma_chan *zx_of_dma_simple_xlate(struct of_phandle_args *dma_spec,
struct dma_chan *chan;
struct zx_dma_chan *c;
if (request > d->dma_requests)
if (request >= d->dma_requests)
return NULL;
chan = dma_get_any_slave_channel(&d->slave);