From 8c4223bee91b771782f2ec07f2c85d81cdff3ed5 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Fri, 10 Sep 2010 22:33:42 +0100 Subject: [PATCH] drm/i915: Only call udelay() when waiting for clocks to stabilise Signed-off-by: Chris Wilson --- drivers/gpu/drm/i915/intel_display.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 95c84164050..df410e4827e 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -1989,8 +1989,8 @@ static void ironlake_crtc_enable(struct drm_crtc *crtc) if ((temp & DPLL_VCO_ENABLE) == 0) { I915_WRITE(pch_dpll_reg, temp | DPLL_VCO_ENABLE); I915_READ(pch_dpll_reg); + udelay(200); } - udelay(200); if (HAS_PCH_CPT(dev)) { /* Be sure PCH DPLL SEL is set */ @@ -2136,8 +2136,6 @@ static void ironlake_crtc_disable(struct drm_crtc *crtc) } else DRM_DEBUG_KMS("crtc %d is disabled\n", pipe); - udelay(100); - /* Disable PF */ I915_WRITE(pipe ? PFB_CTL_1 : PFA_CTL_1, 0); I915_WRITE(pipe ? PFB_WIN_SZ : PFA_WIN_SZ, 0); -- 2.11.4.GIT