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authorAlan Cox <alan@linux.intel.com>2009-12-15 16:46:40 -0800
committerGreg Kroah-Hartman <gregkh@suse.de>2009-12-18 13:31:04 -0800
commite435e49fbe434428e3bccc5263888cea908ff9f1 (patch)
tree505f5a89f00cd4901dbe410ea181a930bd8e72e6
parent78ba3f31ee0e1adaa141ab4cafac9df53c6c020a (diff)
matroxfb: fix problems with display stability
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>
-rw-r--r--drivers/video/matrox/g450_pll.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/video/matrox/g450_pll.c b/drivers/video/matrox/g450_pll.c
index d42346e7fdda..3dcb6d218f7c 100644
--- a/drivers/video/matrox/g450_pll.c
+++ b/drivers/video/matrox/g450_pll.c
@@ -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);