[SRU][Q][PATCH 0/1] MT7925 wifi is hard blocked on HP's machine

[AceLan Kao]

From: "Chia-Lin Kao (AceLan)" <acelan.kao at canonical.com>

BugLink: https://bugs.launchpad.net/bugs/2127044

[Impact]
The wifi is hard blocked and can't be used randomly.

[Fix]
The issue is introduced by commit 085749115fd37 ("wifi: mt76: mt7925: add rfkill_poll for hardware rfkill")
The machine doesn't support this feature may lead to undefined behavior, and MTK will submit a firmware to fix this issue in the near feature.

For short-term solution, we made a DMI quick to list the machines that doesn't support this feature.

[Test]
1. Boot up HP Z2 Mini G1a Workstation
2. Run `rfkill list` to check wlan0 block state
3. Re-plug power cord and then check rfkill state again
4. The wlan0 should not be hard blocked.

[Where problems could occur]
Should be pretty safe to return the function call directly, since the machine doesn't support it.

Chia-Lin Kao (AceLan) (1):
  UBUNTU: SAUCE: wifi: mt76: mt7925: add DMI quirk for HP Z2 Mini G1a
    Workstation

 drivers/net/wireless/mediatek/mt76/mt7925/main.c | 6 ++++++
 1 file changed, 6 insertions(+)

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2.43.0