korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-25 21:24:08 +08:00
Code Issues Packages Projects Releases Wiki Activity

Fix the graphic corruption issue on IA64 machines

Browse Source 
VGA console driver can misunderstand the current mode(Text/Graphic) under
"disable console blanking" setting.  When "disable console blank" is set
(blankinterval=0), "do_unblank_screen()" function returns without changing
"blank_state", and when "blank_state" is "blank_off", "do_blank_screen()
function returns without invoking sw->con_blank() function.  That's why VGA
console driver can misunderstand the current mode.

Signed-off-by: Nobuhiro Tachino <ntachino@redhat.com>
Signed-off-by: Taku Izumi <izumi2005@soft.fujitsu.com>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Cc: "Luck, Tony" <tony.luck@intel.com>
Acked-by: Pete Zaitcev <zaitcev@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
izumi 2007-07-17 04:05:49 -07:00 committed by Linus Torvalds
parent 1a3f28817e
commit b6e8f00fcd
1 changed files with 5 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/char/vt.c
View File

@ -3506,9 +3506,6 @@ void do_blank_screen(int entering_gfx)
}
return;
}
if (blank_state != blank_normal_wait)
return;
blank_state = blank_off;
/* entering graphics mode? */
if (entering_gfx) {
@ -3516,10 +3513,15 @@ void do_blank_screen(int entering_gfx)
save_screen(vc);
vc->vc_sw->con_blank(vc, -1, 1);
console_blanked = fg_console + 1;
blank_state = blank_off;
set_origin(vc);
return;
}
if (blank_state != blank_normal_wait)
return;
blank_state = blank_off;
/* don't blank graphics */
if (vc->vc_mode != KD_TEXT) {
console_blanked = fg_console + 1;