[SRU] [Bionic/Unstable] [PATCH 0/1] Allow Raven Ridge's audio controller to be runtime suspended

[Kai-Heng Feng]

BugLink: https://bugs.launchpad.net/bugs/1782540

[Impact]
AMD Raven Ridge's audio controller doesn't get runtime suspended. It
consumes unnecessary power.

[Test]
With the patch, it can get runtime suspended and save ~1W for the
system.
It can also get runtime resumed correctly when doing audio input/output.

[Fix]
Add AZX_DCAPS_PM_RUNTIME flag to let sound subsystem know it supports
runtime PM.

[Regression Potential]
Low. This change limits to Raven Ridge's audio controller

Kai-Heng Feng (1):
  ALSA: hda: Add AZX_DCAPS_PM_RUNTIME for AMD Raven Ridge

 sound/pci/hda/hda_intel.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

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2.17.1