Re: [RFC PATCH 06/40] soundwire: intel: prevent possible dereference in hw_params

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diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c
index 68832e613b1e..497879dd9c0d 100644
--- a/drivers/soundwire/intel.c
+++ b/drivers/soundwire/intel.c
@@ -509,7 +509,7 @@ static int intel_config_stream(struct sdw_intel *sdw,
                     struct snd_soc_dai *dai,
                     struct snd_pcm_hw_params *hw_params, int link_id)
  {
-    if (sdw->res->ops && sdw->res->ops->config_stream)
+    if (sdw->res->ops && sdw->res->ops->config_stream && sdw->res->arg)
          return sdw->res->ops->config_stream(sdw->res->arg,
                  substream, dai, hw_params, link_id);


Hmm, declaring local for sdw->res should prove useful here after addition of 4th sdw->res dereference.

yes, it's an eyesore. I added this to quickly fix a kernel oops while debugging, will simplify. thanks for the note.
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