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authorPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>2021-03-22 19:37:22 +0300
committerMark Brown <broonie@kernel.org>2021-03-23 20:14:25 +0300
commit91ec48f540f83022377723a774a0a37a630801af (patch)
treec5f67e06b50768364ece532f9b348821c5f21dc7 /sound
parent927280909fa7d8e61596800d82f18047c6cfbbe4 (diff)
downloadlinux-91ec48f540f83022377723a774a0a37a630801af.tar.xz
ASoC: SOF: core: harden shutdown helper
When the probe is handled in a workqueue, we must use cancel_work_sync() in the shutdown helper to avoid possible race conditions. We must also take care of possible errors happening in a probe workqueue or during pm_runtime resume (called e.g. before shutdown for PCI devices). We should really only try to access hardware registers and initiate IPCs if the DSP is fully booted. Fixes: daff7f1478e12 ("ASoC: SOF: add snd_sof_device_shutdown() helper for shutdown") Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com> Reviewed-by: Libin Yang <libin.yang@intel.com> Link: https://lore.kernel.org/r/20210322163728.16616-3-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound')
-rw-r--r--sound/soc/sof/core.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/sound/soc/sof/core.c b/sound/soc/sof/core.c
index 6d8f7d9fd192..4a3d522f612b 100644
--- a/sound/soc/sof/core.c
+++ b/sound/soc/sof/core.c
@@ -399,7 +399,13 @@ int snd_sof_device_shutdown(struct device *dev)
{
struct snd_sof_dev *sdev = dev_get_drvdata(dev);
- return snd_sof_shutdown(sdev);
+ if (IS_ENABLED(CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE))
+ cancel_work_sync(&sdev->probe_work);
+
+ if (sdev->fw_state == SOF_FW_BOOT_COMPLETE)
+ return snd_sof_shutdown(sdev);
+
+ return 0;
}
EXPORT_SYMBOL(snd_sof_device_shutdown);