1 files changed, 9 insertions, 10 deletions

diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c
index 4157250140b0..f6b7c0e36a1a 100644
--- a/drivers/gpu/drm/drm_modes.c
+++ b/drivers/gpu/drm/drm_modes.c
@@ -773,24 +773,23 @@ EXPORT_SYMBOL(drm_mode_hsync);
 int drm_mode_vrefresh(const struct drm_display_mode *mode)
 {
         int refresh = 0;
-        unsigned int calc_val;
 
         if (mode->vrefresh > 0)
                 refresh = mode->vrefresh;
         else if (mode->htotal > 0 && mode->vtotal > 0) {
-                int vtotal;
-                vtotal = mode->vtotal;
-                /* work out vrefresh the value will be x1000 */
-                calc_val = (mode->clock * 1000);
-                calc_val /= mode->htotal;
-                refresh = (calc_val + vtotal / 2) / vtotal;
+                unsigned int num, den;
+
+                num = mode->clock * 1000;
+                den = mode->htotal * mode->vtotal;
 
                 if (mode->flags & DRM_MODE_FLAG_INTERLACE)
-                        refresh *= 2;
+                        num *= 2;
                 if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
-                        refresh /= 2;
+                        den *= 2;
                 if (mode->vscan > 1)
-                        refresh /= mode->vscan;
+                        den *= mode->vscan;
+
+                refresh = DIV_ROUND_CLOSEST(num, den);
         }
         return refresh;
 }