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| author | Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com> | 2021-09-28 13:35:16 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2021-09-28 13:16:26 +0100 |
| commit | 6a0ba071b71c44bc905522b77e96afad464e8aac (patch) | |
| tree | d2e121ed7e65d72c6846cce61be8700bdae3bee2 /sound/soc/sof/intel/hda-ipc.c | |
| parent | b05cfb1215223a750cff5367b625f0ed285a36cf (diff) | |
| download | linux-next-6a0ba071b71c44bc905522b77e96afad464e8aac.tar.gz linux-next-6a0ba071b71c44bc905522b77e96afad464e8aac.zip | |
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>
Diffstat (limited to 'sound/soc/sof/intel/hda-ipc.c')
| -rw-r--r-- | sound/soc/sof/intel/hda-ipc.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/sound/soc/sof/intel/hda-ipc.c b/sound/soc/sof/intel/hda-ipc.c index acfeca42604c..11f20a5a62df 100644 --- a/sound/soc/sof/intel/hda-ipc.c +++ b/sound/soc/sof/intel/hda-ipc.c @@ -253,9 +253,9 @@ int hda_dsp_ipc_get_window_offset(struct snd_sof_dev *sdev, u32 id) return SRAM_WINDOW_OFFSET(id); } -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) { if (!substream || !sdev->stream_box.size) { sof_mailbox_read(sdev, sdev->dsp_box.offset, p, sz); @@ -268,10 +268,13 @@ void hda_ipc_msg_data(struct snd_sof_dev *sdev, hda_stream.hstream); /* The stream might already be closed */ - if (hstream) - sof_mailbox_read(sdev, hda_stream->stream.posn_offset, - p, sz); + if (!hstream) + return -ESTRPIPE; + + sof_mailbox_read(sdev, hda_stream->stream.posn_offset, p, sz); } + + return 0; } int hda_ipc_pcm_params(struct snd_sof_dev *sdev, |