linux-kernel - RE: [PATCH v2 4/6] ACPI / osi: Fix default

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Message-ID: <36DF59CE26D8EE47B0655C516E9CE640287485D3@shsmsx102.ccr.corp.intel.com>
Date:	Thu, 28 Apr 2016 07:54:24 +0000
From:	"Chen, Yu C" <yu.c.chen@...el.com>
To:	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	"Zheng, Lv" <lv.zheng@...el.com>
CC:	Lv Zheng <zetalog@...il.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	"Wysocki, Rafael J" <rafael.j.wysocki@...el.com>,
	"Brown, Len" <len.brown@...el.com>
Subject: RE: [PATCH v2 4/6] ACPI / osi: Fix default _OSI(Darwin) support

Hi 


> -----Original Message-----
> From: Rafael J. Wysocki [mailto:rjw@...ysocki.net]
> Sent: Thursday, April 28, 2016 5:25 AM
> To: Chen, Yu C; Zheng, Lv
> Cc: Lv Zheng; linux-kernel@...r.kernel.org; linux-acpi@...r.kernel.org;
> Wysocki, Rafael J; Brown, Len
> Subject: Re: [PATCH v2 4/6] ACPI / osi: Fix default _OSI(Darwin) support
> 
> On Wednesday, April 27, 2016 09:45:21 AM Chen, Yu C wrote:
> > Hi Lv,
> >
> > > -----Original Message-----
> > > From: Zheng, Lv
> > > Sent: Wednesday, April 27, 2016 4:55 PM
> > > To: Wysocki, Rafael J; Rafael J. Wysocki; Brown, Len
> > > Cc: Zheng, Lv; Lv Zheng; linux-kernel@...r.kernel.org; linux-
> > > acpi@...r.kernel.org; Chen, Yu C
> > > Subject: [PATCH v2 4/6] ACPI / osi: Fix default _OSI(Darwin) support
> > >
> > > From: Chen Yu <yu.c.chen@...el.com>
> > >
> > > The following commit always reports positive value when Apple
> > > hardware queries _OSI("Darwin"):
> > >  Commit: 7bc5a2bad0b8d9d1ac9f7b8b33150e4ddf197334
> > >  Subject: ACPI: Support _OSI("Darwin") correctly However since this
> > > implementation places the judgement in runtime, it breaks
> > > acpi_osi=!Darwin and cannot return unsupported for _OSI("WinXXX")
> > > invoked before invoking _OSI("Darwin").
> > >
> > > This patch fixes the issues by reverting the wrong support and
> > > implementing the default behavior of _OSI("Darwin")/_OSI("WinXXX")
> > > on Apple hardware via DMI matching.
> > >
> > > Fixes: 7bc5a2bad0b8 ("ACPI: Support _OSI("Darwin") correctly")
> > > Cc: <stable@...r.kernel.org> # 3.18+
> > > Link: https://bugzilla.kernel.org/show_bug.cgi?id=92111
> > > Reported-by: Lukas Wunner <lukas@...ner.de>
> > > Signed-off-by: Chen Yu <yu.c.chen@...el.com>
> > > Signed-off-by: Lv Zheng <lv.zheng@...el.com>
> > The  vendor id should be 'Apple Inc.' and 'Apple Computer, Inc.' instead.
> 
> If this is the only problem with this patch, I can fix it up.  No need to resend.
Yes, this is the only problem, please help fix it, thanks!
> 
> Thanks,
> Rafael