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ASoC: SOF: sof-audio: flag errors on pipeline teardown 

Before suspending, walk through all the widgets to make sure all
refcounts are zero. If not, the resume will not work and random errors
will be reported. Adding this paranoia check will help identify leaks
and broken sequences.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20220421203201.1550328-9-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Pierre-Louis Bossart 2022-04-21 15:31:55 -05:00 committed by Mark Brown
parent 9272d6c2af
commit d1c73a213b
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GPG Key ID: 24D68B725D5487D0
1 changed files with 12 additions and 0 deletions
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12
sound/soc/sof/ipc3-topology.c
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@ -2247,6 +2247,18 @@ static int sof_ipc3_tear_down_all_pipelines(struct snd_sof_dev *sdev, bool verif
list_for_each_entry(sroute, &sdev->route_list, list)
sroute->setup = false;
/*
* before suspending, make sure the refcounts are all zeroed out. There's no way
* to recover at this point but this will help root cause bad sequences leading to
* more issues on resume
*/
list_for_each_entry(swidget, &sdev->widget_list, list) {
if (swidget->use_count != 0) {
dev_err(sdev->dev, "%s: widget %s is still in use: count %d\n",
__func__, swidget->widget->name, swidget->use_count);
}
}
return 0;
}