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drm/i915/lvds: Always use 0 to disable the pfit controller

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... and just any combination of bits & ~PFIT_ENABLE. This way we do not
attempt disable to the panel fitter controller uselessly upon
intel_lvds_disable().

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2011-01-11 18:09:58 +00:00
parent 47356eb672
commit bee17e5ae6
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/i915/intel_lvds.c
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@ -374,6 +374,10 @@ static bool intel_lvds_mode_fixup(struct drm_encoder *encoder,
}
out:
if ((pfit_control & PFIT_ENABLE) == 0) {
pfit_control = 0;
pfit_pgm_ratios = 0;
}
if (pfit_control != intel_lvds->pfit_control ||
pfit_pgm_ratios != intel_lvds->pfit_pgm_ratios) {
intel_lvds->pfit_control = pfit_control;