linux-kernel - Re: 2.6.29-rc3-git6: Reported regressions from 2.6.28

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Message-ID: <alpine.LFD.2.00.0902041012440.3247@localhost.localdomain>
Date:	Wed, 4 Feb 2009 10:17:20 -0800 (PST)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Norbert Preining <preining@...ic.at>
cc:	"Rafael J. Wysocki" <rjw@...k.pl>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Jens Axboe <jens.axboe@...cle.com>,
	Hiroshi Shimamoto <h-shimamoto@...jp.nec.com>,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: 2.6.29-rc3-git6: Reported regressions from 2.6.28

On Wed, 4 Feb 2009, Norbert Preining wrote:
> 
> The problem is that if you have a configuration under 2.6.28 without
> CONFIG_FB and just call make oldconfig, or even make config and don't
> know that you loose the DRM. And I was using make oldconfig (there is a
> graphical config?? ;-))

Sure. It's inconvenient, no question about that. I asked the i915 people 
to look into not requiring CONFIG_FB, and I hope they will, but my point 
is that I don't think we can consider "small one-time inconvenience" to be 
a "regression".

> So maybe there should be a select FB or so under the CONFIG_DRM option
> (not that I actually can program Kconfig).

CONFIG_FB is one of the things that _could_ be selected for (it doesn't 
depend on anything else that I know about), so just changing the "depends 
on FB" into a "select FB" may get rid of the issue - but it would not 
actually fix your problem, since your CONFIG_DRM_I915 has already been set 
to 'n' by now - so you'd _still_ have to enable it by hand again.

So the upside is not very big - people who have custom configs are the 
often the same people who try -rc1's, so they've already hit this.

			Linus
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