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authorTakashi Iwai <tiwai@suse.de>2020-07-27 18:44:43 +0200
committerTakashi Iwai <tiwai@suse.de>2020-07-27 18:45:38 +0200
commita6630529aecb5a3e84370c376ed658e892e6261e (patch)
tree7730334474e0b16c765ddb9771c60fb97300fc58 /sound/pci/vx222
parent6fa38ef1534e7e9320aa15e329eb1404ab2f70ac (diff)
ALSA: hda: Workaround for spurious wakeups on some Intel platforms
We've received a regression report on Intel HD-audio controller that wakes up immediately after S3 suspend. The bisection leads to the commit c4c8dd6ef807 ("ALSA: hda: Skip controller resume if not needed"). This commit replaces the system-suspend to use pm_runtime_force_suspend() instead of the direct call of __azx_runtime_suspend(). However, by some really mysterious reason, pm_runtime_force_suspend() causes a spurious wakeup (although it calls the same __azx_runtime_suspend() internally). As an ugly workaround for now, revert the behavior to call __azx_runtime_suspend() and __azx_runtime_resume() for those old Intel platforms that may exhibit such a problem, while keeping the new standard pm_runtime_force_suspend() and pm_runtime_force_resume() pair for the remaining chips. Fixes: c4c8dd6ef807 ("ALSA: hda: Skip controller resume if not needed") BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=208649 Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20200727164443.4233-1-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
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