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SubjectRe: [PATCH] matroxfb: Fix problems with display stability
From
Hi Alan,

On Mon, Nov 30, 2009 at 3:13 PM, Alan Cox <alan@linux.intel.com> wrote:
> 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.
>
> Closes-bug: http://bugzilla.kernel.org/show_bug.cgi?id=9709
> Signed-off-by: Alan Cox <alan@linux.intel.com>
> Cc: <stable@kernel.org>

We might as well ask for a Tested-by tag from Ruud (whom I've added to
CC) while we're at it.

> ---
>
>  drivers/video/matrox/g450_pll.c |    3 ++-
>  1 files changed, 2 insertions(+), 1 deletions(-)
>
>
> diff --git a/drivers/video/matrox/g450_pll.c b/drivers/video/matrox/g450_pll.c
> index 09f6e04..c15f8a5 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);
>
>
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