linux-kernel - Re: [PATCH 2/3] ACPICA: Add interface for getting latest OS version requested via

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Message-ID: <1371508629.523.3.camel@x230>
Date:	Mon, 17 Jun 2013 22:37:10 +0000
From:	Matthew Garrett <matthew.garrett@...ula.com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	"seth.forshee@...onical.com" <seth.forshee@...onical.com>,
	"joeyli.kernel@...il.com" <joeyli.kernel@...il.com>,
	"daniel.vetter@...ll.ch" <daniel.vetter@...ll.ch>,
	"lenb@...nel.org" <lenb@...nel.org>,
	Bob Moore <robert.moore@...el.com>
Subject: Re: [PATCH 2/3] ACPICA: Add interface for getting latest OS version
 requested via _OSI

On Tue, 2013-06-18 at 00:31 +0200, Rafael J. Wysocki wrote:
> Hi Matthew,
> 
> On Sunday, June 09, 2013 07:01:38 PM Matthew Garrett wrote:
> > Drivers may need to make policy decisions based on the OS that the firmware
> > believes it's interacting with. ACPI firmware will make a series of _OSI
> > calls, starting from the oldest OS version they support and ending with the
> > most recent. Add a function to return the last successful call so that
> > drivers know what the firmware's expecting.
> > 
> > Based on a patch by Seth Forshee <seth.forshee@...onical.com>
> 
> Bob (CCed) would prefer us to access acpi_gbl_osi_data directly instead of
> adding the wrapper to ACPICA.  He also thinks that the symbol definitions
> should go into include/acpi/actypes.h rather than into acpixf.h.
> 
> Then, the only ACPICA change would be to move the symbols and we can
> add a Linux-specific patch on top of that adding the acpi_gbl_osi_data
> wrapper.

That sounds good to me. Do you want to respin that, or should I send an
updated set?

-- 
Matthew Garrett | mjg59@...f.ucam.org