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| author | izumi <izumi2005@soft.fujitsu.com> | 2007-07-17 04:05:49 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-07-17 10:23:13 -0700 |
| commit | b6e8f00fcd56b426371334d722d1f3fb251b7290 (patch) | |
| tree | 1fe421e55fc916dfa25f6fea3f821d1722444bcb /drivers/char/vt.c | |
| parent | 1a3f28817e2a3f0be67ec8afa0cfd779adb5d41d (diff) | |
| download | kernel-crypto-b6e8f00fcd56b426371334d722d1f3fb251b7290.tar.gz kernel-crypto-b6e8f00fcd56b426371334d722d1f3fb251b7290.tar.xz kernel-crypto-b6e8f00fcd56b426371334d722d1f3fb251b7290.zip | |
Fix the graphic corruption issue on IA64 machines
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>
Diffstat (limited to 'drivers/char/vt.c')
| -rw-r--r-- | drivers/char/vt.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/char/vt.c b/drivers/char/vt.c index 45b33cf9764..edb7002a321 100644 --- a/drivers/char/vt.c +++ b/drivers/char/vt.c @@ -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; |