Re: [Intel-gfx] [PATCH] i915: fix ACPI _DSM warning

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On Thu, Aug 01, 2013 at 06:21:28PM +0200, Peter Wu wrote:
> Since commit 29a241c (ACPICA: Add argument typechecking for all
> predefined ACPI names), _DSM parameters are validated which trigger the
> following warning:
> 
>     ACPI Warning: \_SB_.PCI0.GFX0._DSM: Argument #4 type mismatch - Found [Integer], ACPI requires [Package] (20130517/nsarguments-95)
>     ACPI Warning: \_SB_.PCI0.GFX0._DSM: Argument #4 type mismatch - Found [Integer], ACPI requires [Package] (20130517/nsarguments-95)
>     ACPI Warning: \_SB_.PCI0.P0P2.PEGP._DSM: Argument #4 type mismatch - Found [Integer], ACPI requires [Package] (20130517/nsarguments-95)
>     ACPI Warning: \_SB_.PCI0.P0P2.PEGP._DSM: Argument #4 type mismatch - Found [Integer], ACPI requires [Package] (20130517/nsarguments-95)
> 
> As the Intel _DSM method seems to ignore this parameter, let's comply to
> the ACPI spec and use a Package instead.
> 
> Signed-off-by: Peter Wu <lekensteyn@xxxxxxxxx>
> ---
> What is this code useful for? It seems unfinished, all it does it
> printing some information when a mux is available, but besides that
> there is no interaction with the driver.

Dunno how it all works exactly, but yours is not the only report:

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=32602

Queued for -next, thanks for the patch.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
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