From: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Tue, 24 Sep 2013 18:26:19 +0000 (+0300)
Subject: drm/i915: Use DIV_ROUND_CLOSEST()
X-Git-Tag: v3.13-rc1~76^2~80^2~26
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=5de56df5c708f5d0d1bb2c156385a6740436affa;p=~emulex%2Finfiniband.git

drm/i915: Use DIV_ROUND_CLOSEST()

vlv_find_best_dpll() has an open coded DIV_ROUND_CLOSEST(). Replace it
with the real thing.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index fcf22960d88..76870f0ffa7 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -695,8 +695,7 @@ vlv_find_best_dpll(const intel_limit_t *limit, struct drm_crtc *crtc,
 				p = p1 * p2;
 				/* based on hardware requirement, prefer bigger m1,m2 values */
 				for (m1 = limit->m1.min; m1 <= limit->m1.max; m1++) {
-					m2 = (((2*(fastclk * p * n / m1 )) +
-					       refclk) / (2*refclk));
+					m2 = DIV_ROUND_CLOSEST(fastclk * p * n, refclk * m1);
 					m = m1 * m2;
 					vco = updrate * m;