Re: [PATCH] platform/x86: thinkpad_acpi: disable bluetooth for some machines

[Jiaxun Yang]

在 2019/3/8 上午7:14, Mario.Limonciello@xxxxxxxx 写道:
>   -----Original Message-----
> > From: platform-driver-x86-owner@xxxxxxxxxxxxxxx <platform-driver-x86-
> > owner@xxxxxxxxxxxxxxx> On Behalf Of Jiaxun Yang
> > Sent: Thursday, March 7, 2019 2:08 AM
> > To: ibm-acpi@xxxxxxxxxx
> > Cc: dvhart@xxxxxxxxxxxxx; andy@xxxxxxxxxxxxx; ibm-acpi-
> > devel@xxxxxxxxxxxxxxxxxxxxx; platform-driver-x86@xxxxxxxxxxxxxxx; linux-
> > kernel@xxxxxxxxxxxxxxx; stable@xxxxxxxxxxxxxxx; Jiaxun Yang
> > Subject: [PATCH] platform/x86: thinkpad_acpi: disable bluetooth for some
> > machines
> >
> >
> > [EXTERNAL EMAIL]
> >
> > Some AMD based ThinkPads have a firmware bug that calling
> > "GBDC" will cause bluetooth on Intel wireless cards blocked.

Hi,

Thanks for your suggestions.

> Since this is considered a firmware bug; has the OEM (and IBV) been notified?  Is it
> fixed in a newer version of the firmware?
No. I've noticed them about the bug but they said these models have no 
official Linux support so no plan to fix.
> If so, then this should probably only match particular broken firmware versions.
Disable bluetooth subdriver on these models should be safe since Intel 
cards have built-in RFKill and there is no bluetooth hotkey on these 
machines.
> > Probe these models by DMI match and disable bluetooth subdriver
> > if specified Intel wireless card exist.
> >
> > Signed-off-by: Jiaxun Yang <jiaxun.yang@xxxxxxxxxxx>
> > ---

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Jiaxun Yang