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authorIngo Molnar <mingo@elte.hu>2009-10-25 17:30:53 +0100
committerIngo Molnar <mingo@elte.hu>2009-10-25 17:30:53 +0100
commit0b9e31e9264f1bad89856afb96da1688292f13b4 (patch)
tree7a9e9b6456dce993efeed8734de0a15a1f16ae94 /kernel/power/console.c
parentcf82ff7ea7695b0e82ba07bc5e9f1bd03a74e1aa (diff)
parent964fe080d94db82a3268443e9b9ece4c60246414 (diff)
Merge branch 'linus' into sched/core
Conflicts: fs/proc/array.c Merge reason: resolve conflict and queue up dependent patch. Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/power/console.c')
-rw-r--r--kernel/power/console.c63
1 files changed, 5 insertions, 58 deletions
diff --git a/kernel/power/console.c b/kernel/power/console.c
index a3961b205de..5187136fe1d 100644
--- a/kernel/power/console.c
+++ b/kernel/power/console.c
@@ -14,56 +14,13 @@
#define SUSPEND_CONSOLE (MAX_NR_CONSOLES-1)
static int orig_fgconsole, orig_kmsg;
-static int disable_vt_switch;
-
-/*
- * Normally during a suspend, we allocate a new console and switch to it.
- * When we resume, we switch back to the original console. This switch
- * can be slow, so on systems where the framebuffer can handle restoration
- * of video registers anyways, there's little point in doing the console
- * switch. This function allows you to disable it by passing it '0'.
- */
-void pm_set_vt_switch(int do_switch)
-{
- acquire_console_sem();
- disable_vt_switch = !do_switch;
- release_console_sem();
-}
-EXPORT_SYMBOL(pm_set_vt_switch);
int pm_prepare_console(void)
{
- acquire_console_sem();
-
- if (disable_vt_switch) {
- release_console_sem();
- return 0;
- }
-
- orig_fgconsole = fg_console;
-
- if (vc_allocate(SUSPEND_CONSOLE)) {
- /* we can't have a free VC for now. Too bad,
- * we don't want to mess the screen for now. */
- release_console_sem();
+ orig_fgconsole = vt_move_to_console(SUSPEND_CONSOLE, 1);
+ if (orig_fgconsole < 0)
return 1;
- }
- if (set_console(SUSPEND_CONSOLE)) {
- /*
- * We're unable to switch to the SUSPEND_CONSOLE.
- * Let the calling function know so it can decide
- * what to do.
- */
- release_console_sem();
- return 1;
- }
- release_console_sem();
-
- if (vt_waitactive(SUSPEND_CONSOLE)) {
- pr_debug("Suspend: Can't switch VCs.");
- return 1;
- }
orig_kmsg = kmsg_redirect;
kmsg_redirect = SUSPEND_CONSOLE;
return 0;
@@ -71,19 +28,9 @@ int pm_prepare_console(void)
void pm_restore_console(void)
{
- acquire_console_sem();
- if (disable_vt_switch) {
- release_console_sem();
- return;
- }
- set_console(orig_fgconsole);
- release_console_sem();
-
- if (vt_waitactive(orig_fgconsole)) {
- pr_debug("Resume: Can't switch VCs.");
- return;
+ if (orig_fgconsole >= 0) {
+ vt_move_to_console(orig_fgconsole, 0);
+ kmsg_redirect = orig_kmsg;
}
-
- kmsg_redirect = orig_kmsg;
}
#endif