[Bug 1876859] Autopkgtest regression report (linux-oracle-5.4/5.4.0-1019.19~18.04.1)

All autopkgtests for the newly accepted linux-oracle-5.4 (5.4.0-1019.19~18.04.1) for bionic have finished running.
The following regressions have been reported in tests triggered by the package:

zfs-linux/unknown (armhf)


Please visit the excuses page listed below and investigate the failures, proceeding afterwards as per the StableReleaseUpdates policy regarding autopkgtest regressions [1].

https://people.canonical.com/~ubuntu-archive/proposed-
migration/bionic/update_excuses.html#linux-oracle-5.4

[1] https://wiki.ubuntu.com/StableReleaseUpdates#Autopkgtest_Regressions

Thank you!

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https://bugs.launchpad.net/bugs/1876859

Title:
Support DMIC micmute LED on HP platforms

Status in HWE Next:
New
Status in linux package in Ubuntu:
Incomplete
Status in linux-oem-5.6 package in Ubuntu:
Invalid
Status in linux source package in Focal:
Fix Released
Status in linux-oem-5.6 source package in Focal:
Fix Released
Status in linux source package in Groovy:
Incomplete
Status in linux-oem-5.6 source package in Groovy:
Invalid

Bug description:
[Impact]
DMIC micmute LED on HP platforms doesn't work.

[Fix]
Add LED class support from HDA codec, so DMIC can use LEDS_TRIGGER_AUDIO to control micmute.

[Test]
After applying the fix, micmute LED can correctly indicate the status of micmute.

[Regression Potential]
Low. For now it only affects one platform, and it doesn't touch any core part of the subsystem.

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