1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/video/fbmon.c b/drivers/video/fbmon.c
index 6cd1976548d4..c2718bb94949 100644
--- a/drivers/video/fbmon.c
+++ b/drivers/video/fbmon.c
@@ -1241,6 +1241,8 @@ int fb_validate_mode(const struct fb_var_screeninfo *var, struct fb_info *info)
                 vtotal *= 2;
 
         hfreq = pixclock/htotal;
+        hfreq = (hfreq + 500) / 1000 * 1000;
+
         vfreq = hfreq/vtotal;
 
         return (vfreq < vfmin || vfreq > vfmax ||