APPLIED Re: [SRU] [OEM-5.14] [PATCH 0/1] Fix non-working MT7921 BT after reboot

[Timo Aaltonen]

Kai-Heng Feng kirjoitti 25.3.2022 klo 17.53:
> BugLink: https://bugs.launchpad.net/bugs/1966497
> 
> [Impact]
> There's a high chance that MT7921 BT may go out to lunch after reboot.
> Worse, there's no way to recover the controller unless the power cord is
> unplugged.
> 
> [Fix]
> In addition to SRU "Need to reset MT7921 BT when the firmware hang or
> command no response", enable MSFT extension can magically solve the
> issue.
> 
> [Test]
> With the patch applied, the MT7921 BT continues to work after 100 times
> reboots.
> 
> [Where problems could occur]
> This fix is specific to MTK BT controllers, so the change is limited.
> 
> I totally don't understand why this patch can fix the issue, other than
> it just does the trick. So I guess we have to accept the reality that
> hardwares can have their own quirks.
> 
> mark-yw.chen (1):
>    Bluetooth: btusb: Enable MSFT extension for Mediatek Chip (MT7921)
> 
>   drivers/bluetooth/btusb.c | 2 ++
>   1 file changed, 2 insertions(+)
> 

applied to oem-5.14, thanks

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