1 files changed, 11 insertions, 16 deletions

diff --git a/kernel/sys.c b/kernel/sys.c
index d09cac23fdfd..f91218a5463e 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -428,7 +428,7 @@ void kernel_kexec(void)
 {
 #ifdef CONFIG_KEXEC
         struct kimage *image;
-        image = xchg(&kexec_image, 0);
+        image = xchg(&kexec_image, NULL);
         if (!image) {
                 return;
         }
@@ -440,23 +440,25 @@ void kernel_kexec(void)
 }
 EXPORT_SYMBOL_GPL(kernel_kexec);
 
+void kernel_shutdown_prepare(enum system_states state)
+{
+        notifier_call_chain(&reboot_notifier_list,
+                (state == SYSTEM_HALT)?SYS_HALT:SYS_POWER_OFF, NULL);
+        system_state = state;
+        device_shutdown();
+}
 /**
  *      kernel_halt - halt the system
  *
  *      Shutdown everything and perform a clean system halt.
  */
-void kernel_halt_prepare(void)
-{
-        notifier_call_chain(&reboot_notifier_list, SYS_HALT, NULL);
-        system_state = SYSTEM_HALT;
-        device_shutdown();
-}
 void kernel_halt(void)
 {
-        kernel_halt_prepare();
+        kernel_shutdown_prepare(SYSTEM_HALT);
         printk(KERN_EMERG "System halted.\n");
         machine_halt();
 }
+
 EXPORT_SYMBOL_GPL(kernel_halt);
 
 /**
@@ -464,20 +466,13 @@ EXPORT_SYMBOL_GPL(kernel_halt);
  *
  *      Shutdown everything and perform a clean system power_off.
  */
-void kernel_power_off_prepare(void)
-{
-        notifier_call_chain(&reboot_notifier_list, SYS_POWER_OFF, NULL);
-        system_state = SYSTEM_POWER_OFF;
-        device_shutdown();
-}
 void kernel_power_off(void)
 {
-        kernel_power_off_prepare();
+        kernel_shutdown_prepare(SYSTEM_POWER_OFF);
         printk(KERN_EMERG "Power down.\n");
         machine_power_off();
 }
 EXPORT_SYMBOL_GPL(kernel_power_off);
-
 /*
  * Reboot system call: for obvious reasons only root may call it,
  * and even root needs to set up some magic numbers in the registers