From: Paulo Zanoni <paulo.r.zanoni@intel.com>
Date: Mon, 9 Feb 2015 16:46:28 +0000 (-0200)
Subject: drm/i915: don't keep reassigning FBC_UNSUPPORTED
X-Git-Tag: v4.1-rc1~69^2~35^2~53
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=104618b3364963d1630297f2b8e0a232c51dc85b;p=karo-tx-linux.git

drm/i915: don't keep reassigning FBC_UNSUPPORTED

This may save a few picoseconds on !HAS_FBC platforms. And it also
satisfies my OCD.

Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---

diff --git a/drivers/gpu/drm/i915/intel_fbc.c b/drivers/gpu/drm/i915/intel_fbc.c
index c9a470f9d880..ce7774d1b675 100644
--- a/drivers/gpu/drm/i915/intel_fbc.c
+++ b/drivers/gpu/drm/i915/intel_fbc.c
@@ -502,10 +502,8 @@ void intel_fbc_update(struct drm_device *dev)
 	const struct drm_display_mode *adjusted_mode;
 	unsigned int max_width, max_height;
 
-	if (!HAS_FBC(dev)) {
-		set_no_fbc_reason(dev_priv, FBC_UNSUPPORTED);
+	if (!HAS_FBC(dev))
 		return;
-	}
 
 	if (i915.enable_fbc < 0) {
 		if (set_no_fbc_reason(dev_priv, FBC_CHIP_DEFAULT))
@@ -670,6 +668,7 @@ void intel_fbc_init(struct drm_i915_private *dev_priv)
 {
 	if (!HAS_FBC(dev_priv)) {
 		dev_priv->fbc.enabled = false;
+		dev_priv->fbc.no_fbc_reason = FBC_UNSUPPORTED;
 		return;
 	}