ASoC: SOF: add error handling to snd_sof_ipc_msg_data()

If an invalid stream is passed to snd_sof_ipc_msg_data() it won't
fill the provided object with data. The caller has to be able to
recognise such cases to avoid handling invalid data. Make the
function return an error when failing.

Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Reviewed-by: Peter Ujfalusi <peter.ujfalusi@intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20210928103516.8066-1-peter.ujfalusi@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 3 insertions, 3 deletions

diff --git a/sound/soc/sof/intel/hda.h b/sound/soc/sof/intel/hda.h
index 087fa06d5210..cb5a1b17f153 100644
--- a/sound/soc/sof/intel/hda.h
+++ b/sound/soc/sof/intel/hda.h
@@ -563,9 +563,9 @@ int hda_dsp_stream_spib_config(struct snd_sof_dev *sdev,
 			       struct hdac_ext_stream *stream,
 			       int enable, u32 size);
 
-void hda_ipc_msg_data(struct snd_sof_dev *sdev,
-		      struct snd_pcm_substream *substream,
-		      void *p, size_t sz);
+int hda_ipc_msg_data(struct snd_sof_dev *sdev,
+		     struct snd_pcm_substream *substream,
+		     void *p, size_t sz);
 int hda_ipc_pcm_params(struct snd_sof_dev *sdev,
 		       struct snd_pcm_substream *substream,
 		       const struct sof_ipc_pcm_params_reply *reply);