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authorNicolin Chen <nicoleotsuka@gmail.com>2014-08-04 12:19:48 +0800
committerMark Brown <broonie@linaro.org>2014-08-04 15:48:41 +0100
commit6ccf62c7bea561cca7ffbd50839f883327080800 (patch)
treeefbedd0abf754e92a07a5c663d5c5bd7d2d571f7 /sound/soc/generic
parentd387dd08e444b22f844475780fe12a1ad1c6fffd (diff)
downloadlinux-6ccf62c7bea561cca7ffbd50839f883327080800.tar.bz2
ASoC: fsl_sarc_dma: Check pair before using it
The patch 3117bb3109dc: "ASoC: fsl_asrc: Add ASRC ASoC CPU DAI and platform drivers" from Jul 29, 2014, leads to the following Smatch complaint: sound/soc/fsl/fsl_asrc_dma.c:304 fsl_asrc_dma_shutdown() warn: variable dereferenced before check 'pair' (see line 302) sound/soc/fsl/fsl_asrc_dma.c 301 struct fsl_asrc_pair *pair = runtime->private_data; 302 struct fsl_asrc *asrc_priv = pair->asrc_priv; ^^^^^^^^^^^^^^^ Dereference. 303 304 if (pair && asrc_priv->pair[pair->index] == pair) ^^^^ Check. 305 asrc_priv->pair[pair->index] = NULL; 306 So we just let the driver check pair before using it. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com> Signed-off-by: Mark Brown <broonie@linaro.org>
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