Merge upstream (approx. 2.6.12-git8) into 'janitor' branch of netdev-2.6.

[linux-2.6] / kernel / power / main.c

diff --git a/kernel/power/main.c b/kernel/power/main.c
index 7960ddf04a57fca65ce7562ed565a1e1f5f872cd..c94cb9e95090997aa15050412f7fc6564c997d01 100644 (file)
--- a/kernel/power/main.c
+++ b/kernel/power/main.c
@@ -55,6 +55,13 @@ static int suspend_prepare(suspend_state_t state)
 
        pm_prepare_console();
 
+       disable_nonboot_cpus();
+
+       if (num_online_cpus() != 1) {
+               error = -EPERM;
+               goto Enable_cpu;
+       }
+
        if (freeze_processes()) {
                error = -EAGAIN;
                goto Thaw;
@@ -75,6 +82,8 @@ static int suspend_prepare(suspend_state_t state)
                pm_ops->finish(state);
  Thaw:
        thaw_processes();
+ Enable_cpu:
+       enable_nonboot_cpus();
        pm_restore_console();
        return error;
 }
@@ -113,6 +122,7 @@ static void suspend_finish(suspend_state_t state)
        if (pm_ops && pm_ops->finish)
                pm_ops->finish(state);
        thaw_processes();
+       enable_nonboot_cpus();
        pm_restore_console();
 }
 
@@ -150,20 +160,14 @@ static int enter_state(suspend_state_t state)
                goto Unlock;
        }
 
-       /* Suspend is hard to get right on SMP. */
-       if (num_online_cpus() != 1) {
-               error = -EPERM;
-               goto Unlock;
-       }
-
-       pr_debug("PM: Preparing system for suspend\n");
+       pr_debug("PM: Preparing system for %s sleep\n", pm_states[state]);
        if ((error = suspend_prepare(state)))
                goto Unlock;
 
-       pr_debug("PM: Entering state.\n");
+       pr_debug("PM: Entering %s sleep\n", pm_states[state]);
        error = suspend_enter(state);
 
-       pr_debug("PM: Finishing up.\n");
+       pr_debug("PM: Finishing wakeup.\n");
        suspend_finish(state);
  Unlock:
        up(&pm_sem);