[SRU][OEM-5.14][PATCH 0/1] alsa/hda: the microphone can't be detected on a couple of lenovo machines

[Hui Wang]

BugLink: https://bugs.launchpad.net/bugs/1954612

Becase the OEM project schedule needs this patch to be merged to
oem-5.14 asap, So I send this SRU to oem-5.14 only, other kernels
will merge this patch through stable update.

[Impact]
We plug a microphone in the audio jack, but the driver can't
detect the microphone and we try to record sound via this mic,
can't record any sound.

[Fix]
Backport one patch from upstream.

[Test]
Booting the patched kernel, open the gnome-sound-setting, plug a microphone,
we could see the system detect the microphone, and use this mic to record
sound, the sound is recorded successfully.

[Where problems could occur]
The change only applies to the specific machines with those SSIDs, it will
not introduce regression on other machines.


Kailang Yang (1):
  ALSA: hda/realtek - Add headset Mic support for Lenovo ALC897 platform

 sound/pci/hda/patch_realtek.c | 40 +++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)

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2.25.1