[PATCH] Fix build failure in recent pm_prepare_* changes.
[linux-2.6.git] / kernel / power / console.c
1 /*
2  * drivers/power/process.c - Functions for saving/restoring console.
3  *
4  * Originally from swsusp.
5  */
6
7 #include <linux/vt_kern.h>
8 #include <linux/kbd_kern.h>
9 #include <linux/console.h>
10 #include "power.h"
11
12 #if defined(CONFIG_VT) && defined(CONFIG_VT_CONSOLE)
13 #define SUSPEND_CONSOLE (MAX_NR_CONSOLES-1)
14
15 static int orig_fgconsole, orig_kmsg;
16
17 int pm_prepare_console(void)
18 {
19         acquire_console_sem();
20
21         orig_fgconsole = fg_console;
22
23         if (vc_allocate(SUSPEND_CONSOLE)) {
24           /* we can't have a free VC for now. Too bad,
25            * we don't want to mess the screen for now. */
26                 release_console_sem();
27                 return 1;
28         }
29
30         set_console(SUSPEND_CONSOLE);
31         release_console_sem();
32
33         if (vt_waitactive(SUSPEND_CONSOLE)) {
34                 pr_debug("Suspend: Can't switch VCs.");
35                 return 1;
36         }
37         orig_kmsg = kmsg_redirect;
38         kmsg_redirect = SUSPEND_CONSOLE;
39         return 0;
40 }
41
42 void pm_restore_console(void)
43 {
44         acquire_console_sem();
45         set_console(orig_fgconsole);
46         release_console_sem();
47         kmsg_redirect = orig_kmsg;
48         return;
49 }
50 #endif