Re: [PATCH] ACPI: Adjust the return value of _REV on x86

From: Matthew Garrett
Date: Tue Mar 24 2015 - 16:00:21 EST


On Tue, Mar 24, 2015 at 02:53:24PM -0500, Mario Limonciello wrote:
> On 03/24/2015 01:01 PM, Matthew Garrett wrote:
> >Will it? You haven't shipped the firmware that changes this behaviour
> >yet.
> >
> This was posted a few days ago. BIOS A02, it resolves the broken behavior introduced in A01 and Linux.
>
> It can be flashed in the BIOS F12 boot menu, no Windows or DOS necessary.
>
> http://www.dell.com/support/home/us/en/04/Drivers/DriversDetails?driverId=F2PRR&fileId=3442501672&osCode=WB64A&productCode=xps-13-9343-laptop&languageCode=EN&categoryId=BI
>
> Anything bought from now forward will have that BIOS version (or something newer).

Sigh. Then yeah, backporting it to stable is probably out - which means
you've made it impossible to fix any other systems that have broken _REV
behaviour and which would work fine with stable kernels otherwise.

--
Matthew Garrett | mjg59@xxxxxxxxxxxxx
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