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ASoC: Intel: fix warning reported by static check tool smatch

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The smatch tool report warning:
  ...
    CHECK   sound/soc/intel/sst-haswell-pcm.c
  sound/soc/intel/sst-haswell-pcm.c:1110 hsw_pcm_probe() error: buffer overflow\
'hsw_dais' 4 <= 4
  sound/soc/intel/sst-haswell-pcm.c:1112 hsw_pcm_probe() error: buffer overflow\
'hsw_dais' 4 <= 4
  ...
fix it by use its own struct member for post-process module, rather than sharing
unused pcm member.

Signed-off-by: Lu, Han <han.lu@intel.com>
Acked-by: Jie Yang <yang.jie@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Lu, Han 2015-03-27 15:03:57 +08:00 committed by Mark Brown
parent 5d5b275d72
commit 2c0ed63492
1 changed files with 5 additions and 8 deletions
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13
sound/soc/intel/sst-haswell-pcm.c
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@ -137,6 +137,7 @@ struct hsw_priv_data {
struct device *dev;
enum hsw_pm_state pm_state;
struct snd_soc_card *soc_card;
struct sst_module_runtime *runtime_waves; /* sound effect module */
/* page tables */
struct snd_dma_buffer dmab[HSW_PCM_COUNT][2];
@ -902,13 +903,10 @@ static int hsw_pcm_create_modules(struct hsw_priv_data *pdata)
/* create runtime blocks for module waves */
if (sst_hsw_is_module_loaded(hsw, SST_HSW_MODULE_WAVES)) {
pcm_data = &pdata->pcm[HSW_PCM_COUNT-1][0];
pcm_data->runtime = sst_hsw_runtime_module_create(hsw,
SST_HSW_MODULE_WAVES, pcm_data->persistent_offset);
if (pcm_data->runtime == NULL)
pdata->runtime_waves = sst_hsw_runtime_module_create(hsw,
SST_HSW_MODULE_WAVES, 0);
if (pdata->runtime_waves == NULL)
goto err;
pcm_data->persistent_offset =
pcm_data->runtime->persistent_offset;
}
return 0;
@ -933,8 +931,7 @@ static void hsw_pcm_free_modules(struct hsw_priv_data *pdata)
sst_hsw_runtime_module_free(pcm_data->runtime);
}
if (sst_hsw_is_module_loaded(hsw, SST_HSW_MODULE_WAVES)) {
pcm_data = &pdata->pcm[HSW_PCM_COUNT-1][0];
sst_hsw_runtime_module_free(pcm_data->runtime);
sst_hsw_runtime_module_free(pdata->runtime_waves);
}
}