linux-kernel - Re: [PATCH] ACPI: Adjust the return value of

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Message-ID: <20150324200005.GA17499@srcf.ucam.org>
Date:	Tue, 24 Mar 2015 20:00:05 +0000
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	Mario Limonciello <mario_limonciello@...l.com>
Cc:	Matt Fleming <matt@...eblueprint.co.uk>,
	Jason Ekstrand <jason@...kstrand.net>,
	LKML <linux-kernel@...r.kernel.org>,
	Bard Liao <bardliao@...ltek.com>,
	Liam Girdwood <liam.r.girdwood@...ux.intel.com>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	"lenb@...nel.org" <lenb@...nel.org>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>
Subject: Re: [PATCH] ACPI: Adjust the return value of _REV on x86

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@...f.ucam.org
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