From: Krzysztof Helt <krzysztof.h1@wp.pl>
Date: Wed, 11 Nov 2009 22:26:25 +0000 (-0800)
Subject: savagefb: fix blanking mode on CRT display
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=b9f9d4706cb1b706f89f98ea6ead41ebecdefbc2;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

savagefb: fix blanking mode on CRT display

Fix wrong bit mask for blanking register.  Due to the error a CRT monitor
blanks off due to wrong frequency (out of range) instead of PM signal
(vertical and horizontal frequencies cut off).

Just compare the mask with bits set in the switch(blank) clause below the
changed line.

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/drivers/video/savage/savagefb_driver.c b/drivers/video/savage/savagefb_driver.c
index 0857b3b8c495..842d157e1025 100644
--- a/drivers/video/savage/savagefb_driver.c
+++ b/drivers/video/savage/savagefb_driver.c
@@ -1565,7 +1565,7 @@ static int savagefb_blank(int blank, struct fb_info *info)
 		vga_out8(0x3c5, sr8, par);
 		vga_out8(0x3c4, 0x0d, par);
 		srd = vga_in8(0x3c5, par);
-		srd &= 0x03;
+		srd &= 0x50;
 
 		switch (blank) {
 		case FB_BLANK_UNBLANK: