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authorKuninori Morimoto <kuninori.morimoto.gx@renesas.com>2017-11-06 01:07:27 +0000
committerMark Brown <broonie@kernel.org>2017-11-06 11:29:44 +0000
commitc409c2a963475f0288ba3bb47a10f04f6441ffb9 (patch)
treeed4a7643d0af85293058c11c1987aad889bdfe10 /sound
parent9b6ea25066b05c4b8bc4ea69037741bd67649cd1 (diff)
downloadlinux-c409c2a963475f0288ba3bb47a10f04f6441ffb9.tar.bz2
ASoC: rsnd: return -EIO if rsnd_dmaen_request_channel() failed
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 edce5c496c6a ("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>
Diffstat (limited to 'sound')
-rw-r--r--sound/soc/sh/rcar/dma.c4
1 files changed, 1 insertions, 3 deletions
diff --git a/sound/soc/sh/rcar/dma.c b/sound/soc/sh/rcar/dma.c
index 5bc9ec16813c..fd557abfe390 100644
--- a/sound/soc/sh/rcar/dma.c
+++ b/sound/soc/sh/rcar/dma.c
@@ -219,11 +219,9 @@ static int rsnd_dmaen_nolock_start(struct rsnd_mod *mod,
dma->mod_from,
dma->mod_to);
if (IS_ERR_OR_NULL(dmaen->chan)) {
- int ret = PTR_ERR(dmaen->chan);
-
dmaen->chan = NULL;
dev_err(dev, "can't get dma channel\n");
- return ret;
+ return -EIO;
}
return 0;