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>

1 files changed, 7 insertions, 3 deletions

diff --git a/sound/soc/intel/sst-dsp.c b/sound/soc/intel/sst-dsp.c
index 0b715b20a2d7..cd23060a0d86 100644
--- a/sound/soc/intel/sst-dsp.c
+++ b/sound/soc/intel/sst-dsp.c
@@ -224,19 +224,23 @@ EXPORT_SYMBOL_GPL(sst_dsp_shim_update_bits64);
 
 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);
 
 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);
 
 int sst_dsp_boot(struct sst_dsp *sst)
 {
-        sst->ops->boot(sst);
+        if (sst->ops->boot)
+                sst->ops->boot(sst);
+
         return 0;
 }
 EXPORT_SYMBOL_GPL(sst_dsp_boot);