The patch
ASoC: SOF: pcm: fix resource leak in hw_free
has been applied to the asoc tree at
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-5.4
All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.
You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.
If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.
Please add any relevant lists and maintainers to the CCs when replying to this mail.
Thanks, Mark
From e66e52c5b7422824cedf0084c0766602dea7e8a7 Mon Sep 17 00:00:00 2001
From: Kai Vehmanen kai.vehmanen@linux.intel.com Date: Fri, 27 Sep 2019 15:05:30 -0500 Subject: [PATCH] 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.in... Signed-off-by: Mark Brown broonie@kernel.org --- sound/soc/sof/pcm.c | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-)
diff --git a/sound/soc/sof/pcm.c b/sound/soc/sof/pcm.c index e3f6a6dc0f36..fa7769dd825c 100644 --- a/sound/soc/sof/pcm.c +++ b/sound/soc/sof/pcm.c @@ -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);
- ret = sof_pcm_dsp_pcm_free(substream, sdev, spcm); + 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)