APPLIED [OEM-5.10] Re: [SRU] [H/U/OEM-5.10] [PATCH 0/2] Fix mic on P620 after S3 resume

[Timo Aaltonen]

On 29.3.2021 17.47, Kai-Heng Feng wrote:
> BugLink: https://bugs.launchpad.net/bugs/1921757
> 
> [Impact]
> Mic on Lenovo P620 can not record any sound after S3.
> 
> [Fix]
> Query the connector status on system resume.
> 
> [Test]
> Use "arecord | aplay" to test.
> With the fix in place, the mic in question works after S3 resume.
> Also tested on some other USB audio and didn't find any issue.
> 
> [Where problems could occur]
> If there's a USB audio device that doesn't like its connectors being
> queried, then this may regress on those devices.
> However I suspect this is the default behavior on other OSes, so it's
> unlikely to happen.
> 
> Kai-Heng Feng (2):
>    ALSA: usb-audio: Carve out connector value checking into a helper
>    ALSA: usb-audio: Check connector value on resume
> 
>   sound/usb/mixer.c        | 78 ++++++++++++++++++++++++++++++----------
>   sound/usb/mixer.h        |  1 +
>   sound/usb/mixer_quirks.c |  2 +-
>   3 files changed, 61 insertions(+), 20 deletions(-)
> 



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