From: Jon Smirl <jonsmirl@gmail.com>
Date: Wed, 27 Jul 2005 18:46:03 +0000 (-0700)
Subject: [PATCH] fbmon: horizontal frequency rounding fix
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=0a793b77f786022bd0fef1a18142c1b9be9e421d;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

[PATCH] fbmon: horizontal frequency rounding fix

Fix rounding error when mode frequency is very close to monitor limit

Signed-off-by: Jon Smirl <jonsmirl@gmail.com>
Acked-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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 ||