From 8c651311a3a08c1e4815de6933e00a760e498dae Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Tue, 15 Dec 2009 16:46:40 -0800 Subject: [PATCH] matroxfb: fix problems with display stability 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 Reported-by: Damon Tested-by: Ruud van Melick Cc: Petr Vandrovec Cc: Pekka Enberg Cc: Paul A. Clarke Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/video/matrox/g450_pll.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/video/matrox/g450_pll.c b/drivers/video/matrox/g450_pll.c index 09f6e045d5b..c15f8a57498 100644 --- a/drivers/video/matrox/g450_pll.c +++ b/drivers/video/matrox/g450_pll.c @@ -368,7 +368,8 @@ static int __g450_setclk(struct matrox_fb_info *minfo, unsigned int fout, M1064_XDVICLKCTRL_C1DVICLKEN | M1064_XDVICLKCTRL_DVILOOPCTL | M1064_XDVICLKCTRL_P1LOOPBWDTCTL; - matroxfb_DAC_out(minfo, M1064_XDVICLKCTRL, tmp); + /* Setting this breaks PC systems so don't do it */ + /* matroxfb_DAC_out(minfo, M1064_XDVICLKCTRL, tmp); */ matroxfb_DAC_out(minfo, M1064_XPWRCTRL, xpwrctrl);