linux-kernel - Re: 2.6.23-rc7 + radeonfb/s2ram

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Message-Id: <200709231937.13595.mihai.dontu@gmail.com>
Date:	Sun, 23 Sep 2007 19:37:13 +0300
From:	Mihai Donțu <mihai.dontu@...il.com>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc:	linux-kernel@...r.kernel.org,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: 2.6.23-rc7 + radeonfb/s2ram

On Sunday 23 September 2007, Benjamin Herrenschmidt wrote:
> Heh, yup.
> 
> There have been some radeonfb patches around -rc6 or so. Can you try
> backing them out and letting us know if that helps a) ?
> 
> In that case, Linus, we probably want to revert them...
> 
> Though looking at your PCI ID (5955), I don't think the patches should
> have changed anything.

After four hours of bisecting, I got this, which dates back to 2.6.21, but
I've been on 2.6.21.3 for too long and thus missed the commit (I just decided
to be a good citizen and test things before they get out).

dd1447134454b169d5ae353aceb93f2368db8547 is first bad commit
commit dd1447134454b169d5ae353aceb93f2368db8547
Author: johan henriksson <jhn98032@...il.com>
Date:   Tue May 8 00:37:59 2007 -0700

    radeonfb: Add support for Radeon xpress 200m

    Added support for radeon xpress 200m(rs480).  Note that the card doesn't
    like dynclk turned on.

    Signed-off-by: Johan Henriksson <jhn98032@...il.com>
    Cc: Benjamin Herrenschmidt <benh@...nel.crashing.org>
    Cc: "Antonino A. Daplas" <adaplas@....net>
    Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
    Signed-off-by: Linus Torvalds <torvalds@...ux-foundation.org>

:040000 040000 e553664a656ee329152789818b5b071a36ac1e45 0a698ad7daa8cdfd9eb5304812845306c9feb2f9 M      drivers

I turned dynclk off, no result (although dynclk is preferred).

What is interesting, is that the driver ignores "vga=normal" and "jumps" to
a quite high res (I think is 1024x768 or something; the fonts look really nice
though :)).

-- 
Mihai Donțu
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