Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-10-27 07:16:27 +00:00
Code Issues Packages Projects Releases Wiki Activity

ASoC: SOF: Intel: Fix stream cleanup on hw free

Browse Source 
Field "substream" gets assigned during stream setup in
hda_dsp_pcm_hw_params() but it is never cleared afterwards during
cleanup procedure. Now, any non-pcm operation e.g.: compress can
mistakenly make use of that pointer as it's bypassing all
"if (s->substream)" checks.

Nulling the pointer during hw_free operation ensures no wild pointers
are left behind.

Fixes: cdae3b9a47 ("ASoC: SOF: Intel: Add Intel specific HDA PCM operations")
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20200312120058.15057-1-cezary.rojewski@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Cezary Rojewski 2020-03-12 13:00:58 +01:00 committed by Mark Brown
parent a5107b1a09
commit 16dcefc23e
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
sound/soc/sof/intel/hda-stream.c
View File

@ -547,6 +547,8 @@ int hda_dsp_stream_hw_free(struct snd_sof_dev *sdev,
SOF_HDA_REG_PP_PPCTL, mask, 0);
spin_unlock_irq(&bus->reg_lock);
stream->substream = NULL;
return 0;
}