sound/soc/fsl/fsl_asrc.c:250 fsl_asrc_config_pair() warn: variable dereferenced before check 'config' (see line 243)
git remote add next git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git remote update next git checkout 3117bb3109dc223e186302f5dc8ce9ed04adca90 vim +/config +250 sound/soc/fsl/fsl_asrc.c
237 */ 238 static int fsl_asrc_config_pair(struct fsl_asrc_pair *pair) 239 { 240 struct asrc_config *config = pair->config; 241 struct fsl_asrc *asrc_priv = pair->asrc_priv; 242 enum asrc_pair_index index = pair->index; @243 u32 inrate = config->input_sample_rate, indiv; 244 u32 outrate = config->output_sample_rate, outdiv; 245 bool ideal = config->inclk == INCLK_NONE; 246 u32 clk_index[2], div[2]; 247 int in, out, channels; 248 struct clk *clk; 249 @250 if (!config) { 251 pair_err("invalid pair config\n"); 252 return -EINVAL; 253 }
Reported-by: Dan Carpenter dan.carpenter@oracle.com Signed-off-by: Nicolin Chen nicoleotsuka@gmail.com --- sound/soc/fsl/fsl_asrc.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/sound/soc/fsl/fsl_asrc.c b/sound/soc/fsl/fsl_asrc.c index 06a96f3..86f45a1 100644 --- a/sound/soc/fsl/fsl_asrc.c +++ b/sound/soc/fsl/fsl_asrc.c @@ -240,12 +240,11 @@ static int fsl_asrc_config_pair(struct fsl_asrc_pair *pair) struct asrc_config *config = pair->config; struct fsl_asrc *asrc_priv = pair->asrc_priv; enum asrc_pair_index index = pair->index; - u32 inrate = config->input_sample_rate, indiv; - u32 outrate = config->output_sample_rate, outdiv; - bool ideal = config->inclk == INCLK_NONE; + u32 inrate, outrate, indiv, outdiv; u32 clk_index[2], div[2]; int in, out, channels; struct clk *clk; + bool ideal;
if (!config) { pair_err("invalid pair config\n"); @@ -264,6 +263,10 @@ static int fsl_asrc_config_pair(struct fsl_asrc_pair *pair) return -EINVAL; }
+ inrate = config->input_sample_rate; + outrate = config->output_sample_rate; + ideal = config->inclk == INCLK_NONE; + /* Validate input and output sample rates */ for (in = 0; in < ARRAY_SIZE(supported_input_rate); in++) if (inrate == supported_input_rate[in])