From: Chris Wilson Date: Sun, 12 Sep 2010 12:07:25 +0000 (+0100) Subject: drm/i915/lvds: Remove busy wait for powering up the panel. X-Git-Tag: v2.6.37-rc1~92^2~28^2~138 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=c9f9ccc150e119bab6a1003e7762b024623011d8;p=karo-tx-linux.git drm/i915/lvds: Remove busy wait for powering up the panel. We just assume that it will happen in a timely manner. A variant of this patch was first written and tested by Arjan van de Van. Signed-off-by: Chris Wilson --- diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c index f533169e5d8b..9089604011f9 100644 --- a/drivers/gpu/drm/i915/intel_lvds.c +++ b/drivers/gpu/drm/i915/intel_lvds.c @@ -84,17 +84,13 @@ static void intel_lvds_set_power(struct drm_device *dev, bool on) if (on) { I915_WRITE(lvds_reg, I915_READ(lvds_reg) | LVDS_PORT_EN); I915_WRITE(ctl_reg, I915_READ(ctl_reg) | POWER_TARGET_ON); - if (wait_for(I915_READ(status_reg) & PP_ON, 1000)) - DRM_ERROR("timed out waiting to enable LVDS pipe"); - intel_panel_set_backlight(dev, dev_priv->backlight_level); } else { intel_panel_set_backlight(dev, 0); - I915_WRITE(ctl_reg, I915_READ(ctl_reg) & ~POWER_TARGET_ON); I915_WRITE(lvds_reg, I915_READ(lvds_reg) & ~LVDS_PORT_EN); - POSTING_READ(lvds_reg); } + POSTING_READ(lvds_reg); } static void intel_lvds_dpms(struct drm_encoder *encoder, int mode)