From 56ef52cad5e37fca89638e4bad598a994ecc3d9f Mon Sep 17 00:00:00 2001 From: =?utf8?q?Ville=20Syrj=C3=A4l=C3=A4?= Date: Thu, 8 May 2014 19:23:15 +0300 Subject: [PATCH] drm/i915: Kill vblank waits after pipe enable on gmch platforms MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit The pipe might not start to actually run until the port has been enabled (depends on the platform and port type). So don't try to wait for vblank after we enabled the pipe but haven't yet enabled the port. Signed-off-by: Ville Syrjälä Reviewed-by: Chris Wilson References: https://bugs.freedesktop.org/show_bug.cgi?id=77297 Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_display.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 8823e7aa7c02..d1ed9dfe1d30 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -4500,7 +4500,6 @@ static void valleyview_modeset_global_resources(struct drm_device *dev) static void valleyview_crtc_enable(struct drm_crtc *crtc) { struct drm_device *dev = crtc->dev; - struct drm_i915_private *dev_priv = dev->dev_private; struct intel_crtc *intel_crtc = to_intel_crtc(crtc); struct intel_encoder *encoder; int pipe = intel_crtc->pipe; @@ -4536,7 +4535,6 @@ static void valleyview_crtc_enable(struct drm_crtc *crtc) intel_update_watermarks(crtc); intel_enable_pipe(intel_crtc); - intel_wait_for_vblank(dev_priv->dev, pipe); intel_set_cpu_fifo_underrun_reporting(dev, pipe, true); for_each_encoder_on_crtc(dev, crtc, encoder) @@ -4548,7 +4546,6 @@ static void valleyview_crtc_enable(struct drm_crtc *crtc) static void i9xx_crtc_enable(struct drm_crtc *crtc) { struct drm_device *dev = crtc->dev; - struct drm_i915_private *dev_priv = dev->dev_private; struct intel_crtc *intel_crtc = to_intel_crtc(crtc); struct intel_encoder *encoder; int pipe = intel_crtc->pipe; @@ -4572,7 +4569,6 @@ static void i9xx_crtc_enable(struct drm_crtc *crtc) intel_update_watermarks(crtc); intel_enable_pipe(intel_crtc); - intel_wait_for_vblank(dev_priv->dev, pipe); intel_set_cpu_fifo_underrun_reporting(dev, pipe, true); for_each_encoder_on_crtc(dev, crtc, encoder) -- 2.20.1