From: Ville Syrjälä Date: Mon, 28 Apr 2014 12:53:25 +0000 (+0300) Subject: drm/i915: Remove useless checks from primary enable/disable X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=10efa9321efe5f62637b189587539e4086726a2b;p=openwrt%2Fstaging%2Fblogic.git drm/i915: Remove useless checks from primary enable/disable We won't be calling intel_enable_primary_plane() or intel_disable_primary_plane() with the primary plane in the wrong state. So remove the useless DISPLAY_PLANE_ENABLE checks. v2: Convert the checks to WARNs instead (Daniel,Paulo) Signed-off-by: Ville Syrjälä Reviewed-by: Paulo Zanoni Signed-off-by: Daniel Vetter --- diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 53746fb3c54a..72b5c34d8ce7 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -1887,8 +1887,7 @@ static void intel_enable_primary_hw_plane(struct drm_i915_private *dev_priv, reg = DSPCNTR(plane); val = I915_READ(reg); - if (val & DISPLAY_PLANE_ENABLE) - return; + WARN_ON(val & DISPLAY_PLANE_ENABLE); I915_WRITE(reg, val | DISPLAY_PLANE_ENABLE); intel_flush_primary_plane(dev_priv, plane); @@ -1918,8 +1917,7 @@ static void intel_disable_primary_hw_plane(struct drm_i915_private *dev_priv, reg = DSPCNTR(plane); val = I915_READ(reg); - if ((val & DISPLAY_PLANE_ENABLE) == 0) - return; + WARN_ON((val & DISPLAY_PLANE_ENABLE) == 0); I915_WRITE(reg, val & ~DISPLAY_PLANE_ENABLE); intel_flush_primary_plane(dev_priv, plane);