linux-kernel - Re: [patch 28/74] thinkpad-acpi: fix incorrect use of TPACPI_BRGHT_MODE

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Message-ID: <20090813222912.GA9108@suse.de>
Date:	Thu, 13 Aug 2009 15:29:12 -0700
From:	Greg KH <gregkh@...e.de>
To:	Stefan Lippers-Hollmann <s.L-H@....de>
Cc:	Henrique de Moraes Holschuh <hmh@....eng.br>,
	linux-kernel@...r.kernel.org, stable@...nel.org,
	stable-review@...nel.org, Len Brown <len.brown@...el.com>
Subject: Re: [patch 28/74] thinkpad-acpi: fix incorrect use of
 TPACPI_BRGHT_MODE_ECNVRAM

On Fri, Aug 14, 2009 at 12:06:43AM +0200, Stefan Lippers-Hollmann wrote:
> Hi
> 
> On Thursday 13 August 2009, Greg KH wrote:
> > 2.6.30-stable review patch.  If anyone has any objections, please let us know.
> > 
> > ------------------
> > 
> > From: Henrique de Moraes Holschuh <hmh@....eng.br>
> > 
> > commit 59fe4fe34d7afdf63208124f313be9056feaa2f4 upstream.
> > 
> > HBRV-based default selection of backlight control strategy didn't work
> > well, at least the X41 defines it but doesn't use it and I don't think
> > it will stop there.
> > 
> > Switch to a white/blacklist.  All models that have HBRV defined have
> > been included in the list, and initially all ATI GPUs will get
> > ECNVRAM, and the Intel GPUs will get UCMS_STEP.
> > 
> > Symptoms of incorrect backlight mode selection are:
> > 
> > 1. Non-working backlight control through sysfs;
> > 
> > 2. Backlight gets reset to the lowest level at every shutdown, reboot
> >    and when thinkpad-acpi gets unloaded;
> > 
> > This fixes a regression in 2.6.30, bugzilla #13826
> 
> As already reported in [1] and confirmed by hmh in [2], this patch breaks 
> compiling thinkpad_acpi in 2.6.31-rc5.

My appologies, I forgot to remove this one from the tree.  I'll go do so
right now.

thanks,

greg k-h
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