dmaengine: zxdma: Fix off-by-one for testing valid pchan request
authorAxel Lin <axel.lin@ingics.com>
Sat, 26 Sep 2015 09:15:47 +0000 (17:15 +0800)
committerVinod Koul <vinod.koul@intel.com>
Thu, 1 Oct 2015 02:12:27 +0000 (07:42 +0530)
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>
drivers/dma/zx296702_dma.c

index 39915a6b7986e2fba00d285370f57f27ed3eeb9a..c017fcd8e07c29b65b7a480a1b817b4645c40f33 100644 (file)
@@ -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);