Commit 4ee1acce authored by David Hollister's avatar David Hollister Committed by Linus Torvalds
Browse files

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



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: default avatarDavid Hollister <david.hollister@amd.com>
Signed-off-by: default avatarJordan Crouse <jordan.crouse@amd.com>
Signed-off-by: default avatarAntonino Daplas <adaplas@pol.net>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 6dbde380

drivers/char/vt.c

+17 −9
Original line number Diff line number Diff line
@@ -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();

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