ASoC: rsnd: return -EIO if rsnd_dmaen_request_channel() failed

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PTR_ERR(NULL) is success. Normally when a function returns both NULL
and error pointers, it means that NULL is not a error.
But, rsnd_dmaen_request_channel() returns NULL if requested resource
was failed.
Let's return -EIO if rsnd_dmaen_request_channel() was failed on
rsnd_dmaen_nolock_start().
This patch fixes commit edce5c496c ("ASoC: rsnd: Request/Release DMA
channel eachtime")

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

...

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Kuninori Morimoto 2017-11-06 01:07:27 +00:00 • committed by Mark Brown

parent 9b6ea25066

commit c409c2a963

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1 changed files with 1 additions and 3 deletions

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sound/soc/sh/rcar/dma.c

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