linux-kernel - Re: i915/kms/backlight-combo mode problem (was: Re: Linux 2.6.39-rc5)

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Date:	Fri, 29 Apr 2011 22:09:54 +0200
From:	Melchior FRANZ <melchior.franz@...il.com>
To:	Takashi Iwai <tiwai@...e.de>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org,
	Chris Wilson <chris@...is-wilson.co.uk>,
	dri-devel@...ts.freedesktop.org
Subject: Re: i915/kms/backlight-combo mode problem (was: Re: Linux 2.6.39-rc5)

* Takashi Iwai -- Friday 29 April 2011:
[https://bugzilla.kernel.org/show_bug.cgi?id=31522]
> Looking at bugzilla, the problem seems like the case lbpc=0.
> What about the patch below instead?

> -			val *= lbpc;
> +			if (lbpc)
> +				val *= lbpc;

Yes, that works as well. (I had assumed that this was the problem,
but wasn't sure if a zero was even a legitimate value, or rather
a sign for a problem or wrong assumption elsewhere.)

m.
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