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Jarkko Nikula authored
There is no need to restore and restart PCM streams in case ADSP didn't reach reset and power off state during system suspend/resume cycle. In that case stream is still active but paused and firmware doesn't allow allocating a new stream before paused stream is freed. ADSP remains active in case suspend sequence didn't go to suspend_late stage. This can happen when either suspend sequence is aborted by a wakeup or by letting only devices suspend by "echo devices >/sys/power/pm_test". Currently stream restoring fails in these suspend cases. Fix this by adding a flag that indicates is complete stream reinitialization needed or is it enough to resume paused stream. Flag is set when we know that ADSP reached suspend_late. Initial fix to this issue came from Fang Yang. I modified it a little and forward ported it to top of two other suspend/resume patches from me. Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Tested-by: Borun Fu <borun.fu@intel.com> Cc: yang fang <yang.a.fang@intel.com> Signed-off-by: Mark Brown <broonie@linaro.org>
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