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During system suspend there is a chance that the running stream undergo an xrun and instead of the expected SNDRV_PCM_TRIGGER_SUSPEND trigger we will receive SNDRV_PCM_TRIGGER_STOP. The handling of SUSPEND and STOP triggers differ that case of the later the sof_pcm_stream_free() will be called with free_widget_list = false. But we must make sure that all active widgets and streams are free before entering suspend in order to be able to resume without error. We can utilize the tear_down_all_pipelines to put the system to an expected state and to fix the suspend/resume error. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com> Link: https://lore.kernel.org/r/20221107084158.26629-1-peter.ujfalusi@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.