[PATCH] fbdev: Fix fb_find_nearest_mode refresh comparison

["Andrew Kephart" <andrew.kephart@xxxxxxxxxxx>]

Refresh rate nearness is not calculated or reset when nearest resolution
changes.

This patch resets the refresh rate differential measurement whenever a
new nearest resolution is discovered.  This fixes two error cases;
first, wherein the first mode's refresh rate differential is never
calculated and second, when the closest refresh rate from a previous
nearest resolution is erroneously preserved.

-andrew


diff --git a/drivers/video/modedb.c b/drivers/video/modedb.c 
index c3a1825..7a61ba6 100644
--- a/drivers/video/modedb.c
+++ b/drivers/video/modedb.c
@@ -902,6 +902,7 @@ const struct fb_videomode
*fb_find_nearest_mode(const struct fb_videomode *mode,
                        abs(cmode->yres - mode->yres);
                if (diff > d) {
                        diff = d;
+                       diff_refresh = abs(cmode->refresh -  mode->refresh);
                        best = cmode;
                } else if (diff == d) {
                        d = abs(cmode->refresh - mode->refresh);

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