linux/kernel/power/console.c

34 lines
614 B
C

/*
* Functions for saving/restoring console.
*
* Originally from swsusp.
*/
#include <linux/vt_kern.h>
#include <linux/kbd_kern.h>
#include <linux/vt.h>
#include <linux/module.h>
#include "power.h"
#define SUSPEND_CONSOLE (MAX_NR_CONSOLES-1)
static int orig_fgconsole, orig_kmsg;
int pm_prepare_console(void)
{
orig_fgconsole = vt_move_to_console(SUSPEND_CONSOLE, 1);
if (orig_fgconsole < 0)
return 1;
orig_kmsg = vt_kmsg_redirect(SUSPEND_CONSOLE);
return 0;
}
void pm_restore_console(void)
{
if (orig_fgconsole >= 0) {
vt_move_to_console(orig_fgconsole, 0);
vt_kmsg_redirect(orig_kmsg);
}
}