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dmaengine: at_xdmac: Handle return value of clk_prepare_enable.

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clk_prepare_enable() can fail here and we must check its return value.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Acked-by: Ludovic Desroches <ludovic.desroches@microchip.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Arvind Yadav 2017-08-07 13:15:19 +05:30 committed by Vinod Koul
parent 1edc85dc56
commit 87c56dcba4
1 changed files with 4 additions and 1 deletions
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5
drivers/dma/at_xdmac.c
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@ -1883,8 +1883,11 @@ static int atmel_xdmac_resume(struct device *dev)
struct at_xdmac_chan *atchan; struct at_xdmac_chan *atchan;
struct dma_chan *chan, *_chan; struct dma_chan *chan, *_chan;
int i; int i;
int ret;
clk_prepare_enable(atxdmac->clk); ret = clk_prepare_enable(atxdmac->clk);
if (ret)
return ret;
/* Clear pending interrupts. */ /* Clear pending interrupts. */
for (i = 0; i < atxdmac->dma.chancnt; i++) { for (i = 0; i < atxdmac->dma.chancnt; i++) {