3 files changed, 18 insertions, 9 deletions

diff --git a/arch/arm/kernel/machine_kexec.c b/arch/arm/kernel/machine_kexec.c
index 3b4872c2da8e..df5958f6864f 100644
--- a/arch/arm/kernel/machine_kexec.c
+++ b/arch/arm/kernel/machine_kexec.c
@@ -37,10 +37,6 @@ void machine_kexec_cleanup(struct kimage *image)
 {
 }
 
-void machine_shutdown(void)
-{
-}
-
 void machine_crash_shutdown(struct pt_regs *regs)
 {
 }
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index aaf51159203a..2e2ec97cc50c 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -198,19 +198,29 @@ int __init reboot_setup(char *str)
 
 __setup("reboot=", reboot_setup);
 
-void machine_halt(void)
+void machine_shutdown(void)
 {
+#ifdef CONFIG_SMP
+        smp_send_stop();
+#endif
 }
 
+void machine_halt(void)
+{
+        machine_shutdown();
+        while (1);
+}
 
 void machine_power_off(void)
 {
+        machine_shutdown();
         if (pm_power_off)
                 pm_power_off();
 }
 
 void machine_restart(char *cmd)
 {
+        machine_shutdown();
         arm_pm_restart(reboot_mode, cmd);
 }
 
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index 0170e248a1dd..40dc74f2b27f 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -471,10 +471,13 @@ static DEFINE_SPINLOCK(stop_lock);
  */
 static void ipi_cpu_stop(unsigned int cpu)
 {
-        spin_lock(&stop_lock);
-        printk(KERN_CRIT "CPU%u: stopping\n", cpu);
-        dump_stack();
-        spin_unlock(&stop_lock);
+        if (system_state == SYSTEM_BOOTING ||
+            system_state == SYSTEM_RUNNING) {
+                spin_lock(&stop_lock);
+                printk(KERN_CRIT "CPU%u: stopping\n", cpu);
+                dump_stack();
+                spin_unlock(&stop_lock);
+        }
 
         set_cpu_online(cpu, false);