From: Jean Delvare <khali@linux-fr.org>
Date: Fri, 12 Oct 2012 04:22:51 +0000 (+1100)
Subject: drm/i915: optimize DIV_ROUND_CLOSEST() call
X-Git-Tag: next-20121016~2^2~44
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=799b045f9ec7a519b13d886acfffbd8df38a40a8;p=karo-tx-linux.git

drm/i915: optimize DIV_ROUND_CLOSEST() call

DIV_ROUND_CLOSEST is faster if the compiler knows it will only be dealing
with unsigned dividends.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: David Airlie <airlied@linux.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index b3b4b6cea8b0..18558f181d0d 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -2547,7 +2547,8 @@ static void gen6_update_ring_freq(struct drm_device *dev)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	int min_freq = 15;
-	int gpu_freq, ia_freq, max_ia_freq;
+	int gpu_freq;
+	unsigned int ia_freq, max_ia_freq;
 	int scaling_factor = 180;
 
 	WARN_ON(!mutex_is_locked(&dev->struct_mutex));