>From 92e30fe36ce949d2634b40e82d9f5c84baade25f Mon Sep 17 00:00:00 2001 From: Jesse Barnes Date: Thu, 28 Jul 2011 14:50:30 -0700 Subject: [PATCH] drm/i915: fix CB tuning check for ILK+ CB tuning is needed to handle potential process variations that might cause clock jitter for certain PLL settings. However, we were setting it incorrectly since we were using the wrong M value as a check (M1 when we needed to use the whole M value). Fix it up, making my HDMI attached display a little prettier (used to have occasional dots crawl across the display). Signed-off-by: Jesse Barnes Signed-off-by: Keith Packard (backported from commit cb0e093162d7b6589c2217a00e2abfef686b32d6 upstream) BugLink: http://bugs.launchpad.net/bugs/891031 Signed-off-by: Timo Aaltonen Acked-by: Stefan Bader Acked-by: Tim Gardner Signed-off-by: Stefan Bader --- drivers/gpu/drm/i915/intel_display.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index dc51881..2c8a234 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -4346,7 +4346,7 @@ static int intel_crtc_mode_set(struct drm_crtc *crtc, } else if (is_sdvo && is_tv) factor = 20; - if (clock.m1 < factor * clock.n) + if (clock.m < factor * clock.n) fp |= FP_CB_TUNE; } -- 1.7.5.4