kpriv/linux-hardened
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

[PATCH] vt: Delay the update of the visible console

Browse source 
Delay the update of the visible framebuffer console until all other consoles
have been initialized in order to avoid losing information.  This only seems
to be a problem with modules, not with built-in drivers.

Signed-off-by: David Hollister <david.hollister@amd.com>
Signed-off-by: Jordan Crouse <jordan.crouse@amd.com>
Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
David Hollister 2006-06-26 00:26:41 -07:00 committed by Linus Torvalds
parent 6dbde380ca
commit 4ee1acce49
1 changed files with 17 additions and 9 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

26
drivers/char/vt.c
View file

@ -2665,7 +2665,7 @@ int __init vty_init(void)
int take_over_console(const struct consw *csw, int first, int last, int deflt)
{
int i, j = -1;
int i, j = -1, k = -1;
const char *desc;
struct module *owner;
@ -2701,8 +2701,11 @@ int take_over_console(const struct consw *csw, int first, int last, int deflt)
continue;
j = i;
if (CON_IS_VISIBLE(vc))
if (CON_IS_VISIBLE(vc)) {
k = i;
save_screen(vc);
}
old_was_color = vc->vc_can_do_color;
vc->vc_sw->con_deinit(vc);
vc->vc_origin = (unsigned long)vc->vc_screenbuf;
@ -2718,18 +2721,23 @@ int take_over_console(const struct consw *csw, int first, int last, int deflt)
*/
if (old_was_color != vc->vc_can_do_color)
clear_buffer_attributes(vc);
if (CON_IS_VISIBLE(vc))
update_screen(vc);
}
printk("Console: switching ");
if (!deflt)
printk("consoles %d-%d ", first+1, last+1);
if (j >= 0)
if (j >= 0) {
struct vc_data *vc = vc_cons[j].d;
printk("to %s %s %dx%d\n",
vc_cons[j].d->vc_can_do_color ? "colour" : "mono",
desc, vc_cons[j].d->vc_cols, vc_cons[j].d->vc_rows);
else
vc->vc_can_do_color ? "colour" : "mono",
desc, vc->vc_cols, vc->vc_rows);
if (k >= 0) {
vc = vc_cons[k].d;
update_screen(vc);
}
} else
printk("to %s\n", desc);
release_console_sem();