[SRU][B/B-OEM/C/D][PATCH 0/1] codecs stop working after S3

Hui Wang hui.wang at canonical.com
Wed Mar 20 01:47:15 UTC 2019

BugLink: https://bugs.launchpad.net/bugs/1820930

To fix this bug, B/OEM-B/C needs only 1 patch, while v5.0-rc1 introduced
a new patch which affect this issue, so the DISCO needs 2 patches.

After S3, some codecs (alc236, alc255, alc891 and some HDMI codec) stop
working, they can't detect jack plugging/unplugging or the audio device
can't show up in the gnome-sound-setting

After S3, if it runs runtime_resume(), the codec works again. We change
the driver to let system_resume() trigger runtime_resume()

[Test Case]
This issue is reported from OEM project, some codecs can't detect
jack pluggin/unplugging, some codecs can't show up in the UI, after
applying this patch, all related bugs are fixed.

[Regression Potential]
Low. have tested on many machines (with this issue or without this issue),
all worked well.

Hui Wang (2):
  ALSA: hda - Enforces runtime_resume after S3 and S4 for each codec
  ALSA: hda - Don't trigger jackpoll_work in azx_resume

 sound/pci/hda/hda_codec.c | 18 +++++++++++++++++-
 sound/pci/hda/hda_intel.c |  8 ++++----
 2 files changed, 21 insertions(+), 5 deletions(-)


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