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matroxfb: fix problems with display stability

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commit 8c651311a3a08c1e4815de6933e00a760e498dae upstream.

Regression caused in 2.6.23 and then despite repeated requests never fixed
or dealt with (Petr promised to sort it in 2008 but seems to have
forgotten).

Enough is enough - remove the problem line that was added.  If it upsets
someone they've had two years to deal with it and at the very least it'll
rattle their cage and wake them up.

Addresses http://bugzilla.kernel.org/show_bug.cgi?id=9709

Signed-off-by: Alan Cox <alan@linux.intel.com>
Reported-by: Damon <account@bugzilla.kernel.org.juxtaposition.net>
Tested-by: Ruud van Melick <rvm1974@raketnet.nl>
Cc: Petr Vandrovec <VANDROVE@vc.cvut.cz>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Paul A. Clarke <pc@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Alan Cox
2009-12-15 16:46:40 -08:00
committed by Greg Kroah-Hartman
parent 257d821807
commit 945d9a8325
1 changed files with 2 additions and 1 deletions
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3
drivers/video/matrox/g450_pll.c
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@@ -341,7 +341,8 @@ static int __g450_setclk(WPMINFO unsigned int fout, unsigned int pll,
M1064_XDVICLKCTRL_C1DVICLKEN |
M1064_XDVICLKCTRL_DVILOOPCTL |
M1064_XDVICLKCTRL_P1LOOPBWDTCTL;
matroxfb_DAC_out(PMINFO M1064_XDVICLKCTRL,tmp);
/* Setting this breaks PC systems so don't do it */
/* matroxfb_DAC_out(PMINFO M1064_XDVICLKCTRL,tmp); */
matroxfb_DAC_out(PMINFO M1064_XPWRCTRL,
xpwrctrl);