pm: rework disabling of user mode helpers during suspend/hibernation

[linux-2.6-omap-h63xx.git] / kernel / power / main.c

diff --git a/kernel/power/main.c b/kernel/power/main.c
index 540b16b68565e74fb9f51f68134f68cc3011b0a0..19122cf6d827d13d03e8a7520d0120d5adf92bbc 100644 (file)
--- a/kernel/power/main.c
+++ b/kernel/power/main.c
@@ -14,6 +14,7 @@
 #include <linux/string.h>
 #include <linux/delay.h>
 #include <linux/errno.h>
+#include <linux/kmod.h>
 #include <linux/init.h>
 #include <linux/console.h>
 #include <linux/cpu.h>
@@ -237,6 +238,10 @@ static int suspend_prepare(void)
        if (error)
                goto Finish;
 
+       error = usermodehelper_disable();
+       if (error)
+               goto Finish;
+
        if (suspend_freeze_processes()) {
                error = -EAGAIN;
                goto Thaw;
@@ -256,6 +261,7 @@ static int suspend_prepare(void)
 
  Thaw:
        suspend_thaw_processes();
+       usermodehelper_enable();
  Finish:
        pm_notifier_call_chain(PM_POST_SUSPEND);
        pm_restore_console();
@@ -376,6 +382,7 @@ int suspend_devices_and_enter(suspend_state_t state)
 static void suspend_finish(void)
 {
        suspend_thaw_processes();
+       usermodehelper_enable();
        pm_notifier_call_chain(PM_POST_SUSPEND);
        pm_restore_console();
 }