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ASoC: SOF: pcm: fix resource leak in hw_free 

Fix a bug in sof_pcm_hw_free() where some cleanup actions were
skipped if STREAM_PCM_FREE IPC was already successfully sent to
DSP when the stream was stopped or suspended. This is incorrect
as hw_free should clean up also other resources, including pcm
lib page allocations, period elapsed work queue and call to
platform hw_free.

Fixes: c29d96c3b9b4 ("ASoC: SOF: reset DMA state in prepare")
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20190927200538.660-6-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Kai Vehmanen 2019-09-27 15:05:30 -05:00 committed by Mark Brown
parent 2e305a0740
commit e66e52c5b7
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GPG Key ID: 24D68B725D5487D0
1 changed files with 10 additions and 10 deletions
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18
sound/soc/sof/pcm.c
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@ -244,7 +244,7 @@ static int sof_pcm_hw_free(struct snd_pcm_substream *substream)
snd_soc_rtdcom_lookup(rtd, DRV_NAME);
struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
struct snd_sof_pcm *spcm;
int ret;
int ret, err = 0;
/* nothing to do for BE */
if (rtd->dai_link->no_pcm)
@ -254,26 +254,26 @@ static int sof_pcm_hw_free(struct snd_pcm_substream *substream)
if (!spcm)
return -EINVAL;
if (!spcm->prepared[substream->stream])
return 0;
dev_dbg(sdev->dev, "pcm: free stream %d dir %d\n", spcm->pcm.pcm_id,
substream->stream);
if (spcm->prepared[substream->stream]) {
ret = sof_pcm_dsp_pcm_free(substream, sdev, spcm);
if (ret < 0)
err = ret;
}
snd_pcm_lib_free_pages(substream);
cancel_work_sync(&spcm->stream[substream->stream].period_elapsed_work);
if (ret < 0)
return ret;
ret = snd_sof_pcm_platform_hw_free(sdev, substream);
if (ret < 0)
if (ret < 0) {
dev_err(sdev->dev, "error: platform hw free failed\n");
err = ret;
}
return ret;
return err;
}
static int sof_pcm_prepare(struct snd_pcm_substream *substream)