diff options
| author | Nicolin Chen <nicoleotsuka@gmail.com> | 2014-08-04 12:19:49 +0800 |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2014-08-04 15:48:41 +0100 |
| commit | 4e13eb722153a5ad66edd80bc26c3028d96a7b93 (patch) | |
| tree | 4d8180c5b4a13de2aa951c3f2024062ec4a446db /sound | |
| parent | 6ccf62c7bea561cca7ffbd50839f883327080800 (diff) | |
| download | lwn-4e13eb722153a5ad66edd80bc26c3028d96a7b93.tar.gz lwn-4e13eb722153a5ad66edd80bc26c3028d96a7b93.zip | |
ASoC: fsl_asrc: Don't access members of config before checking it
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>
Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/fsl/fsl_asrc.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/sound/soc/fsl/fsl_asrc.c b/sound/soc/fsl/fsl_asrc.c index 424b23c38d9a..822110420b71 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]) |