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ASoC: Intel: Check ops before we derefference pointers. 

Check ops pointer members before we can derefference them.

Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
Signed-off-by: Jie Yang <yang.jie@intel.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Liam Girdwood 2014-07-30 20:18:32 +08:00 committed by Mark Brown
parent 543ec637e0
commit 30bba67c43
1 changed files with 7 additions and 3 deletions
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10
sound/soc/intel/sst-dsp.c
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@ -224,19 +224,23 @@ EXPORT_SYMBOL_GPL(sst_dsp_shim_update_bits64);
void sst_dsp_dump(struct sst_dsp *sst) void sst_dsp_dump(struct sst_dsp *sst)
{ {
sst->ops->dump(sst); if (sst->ops->dump)
sst->ops->dump(sst);
} }
EXPORT_SYMBOL_GPL(sst_dsp_dump); EXPORT_SYMBOL_GPL(sst_dsp_dump);
void sst_dsp_reset(struct sst_dsp *sst) void sst_dsp_reset(struct sst_dsp *sst)
{ {
sst->ops->reset(sst); if (sst->ops->reset)
sst->ops->reset(sst);
} }
EXPORT_SYMBOL_GPL(sst_dsp_reset); EXPORT_SYMBOL_GPL(sst_dsp_reset);
int sst_dsp_boot(struct sst_dsp *sst) int sst_dsp_boot(struct sst_dsp *sst)
{ {
sst->ops->boot(sst); if (sst->ops->boot)
sst->ops->boot(sst);
return 0; return 0;
} }
EXPORT_SYMBOL_GPL(sst_dsp_boot); EXPORT_SYMBOL_GPL(sst_dsp_boot);