linux-kernel - Re: [PATCH] nouveau, ACPI: fix regression caused by b072e53

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Date:	Fri, 21 Feb 2014 16:04:12 +1000
From:	Dave Airlie <airlied@...il.com>
To:	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>
Cc:	Jiang Liu <jiang.liu@...ux.intel.com>,
	David Airlie <airlied@...ux.ie>,
	Dave Airlie <airlied@...hat.com>,
	Emil Velikov <emil.l.velikov@...il.com>,
	dri-devel <dri-devel@...ts.freedesktop.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] nouveau, ACPI: fix regression caused by b072e53

On Fri, Feb 21, 2014 at 6:27 AM, Rafael J. Wysocki
<rafael.j.wysocki@...el.com> wrote:
> On 2/20/2014 10:23 AM, Jiang Liu wrote:
>>
>> Fix regression caused by commit b072e53, which breaks loading nouveau
>> driver on optimus laptops.
>>
>> On some platforms, ACPI _DSM method (nouveau_op_dsm_muid, function 0)
>> has special requirements on the fourth parameter, which is different
>> from ACPI specifications. So revert to the private implementation
>> to check availability of _DSM functions instead of using common
>> acpi_check_dsm() interface.
>>
>> Reported-and-Tested-by: Maarten Lankhorst
>> <maarten.lankhorst@...onical.com>
>> Signed-off-by: Jiang Liu <jiang.liu@...ux.intel.com>
>
>
> I'm taking this, because the commit that introduced the regression went in
> through my tree.
>
> In the future I'll appreciate CCing ACPI-related patches to linux-acpi,
> however.

Thanks,

Acked-by: Dave Airlie <airlied@...hat.com>

Dave.
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