1 files changed, 7 insertions, 6 deletions

diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
index da6fbae8df91..4a0f5a1551ea 100644
--- a/arch/s390/kernel/process.c
+++ b/arch/s390/kernel/process.c
@@ -76,17 +76,17 @@ unsigned long thread_saved_pc(struct task_struct *tsk)
 /*
  * Need to know about CPUs going idle?
  */
-static struct notifier_block *idle_chain;
+static ATOMIC_NOTIFIER_HEAD(idle_chain);
 
 int register_idle_notifier(struct notifier_block *nb)
 {
-        return notifier_chain_register(&idle_chain, nb);
+        return atomic_notifier_chain_register(&idle_chain, nb);
 }
 EXPORT_SYMBOL(register_idle_notifier);
 
 int unregister_idle_notifier(struct notifier_block *nb)
 {
-        return notifier_chain_unregister(&idle_chain, nb);
+        return atomic_notifier_chain_unregister(&idle_chain, nb);
 }
 EXPORT_SYMBOL(unregister_idle_notifier);
 
@@ -95,7 +95,7 @@ void do_monitor_call(struct pt_regs *regs, long interruption_code)
         /* disable monitor call class 0 */
         __ctl_clear_bit(8, 15);
 
-        notifier_call_chain(&idle_chain, CPU_NOT_IDLE,
+        atomic_notifier_call_chain(&idle_chain, CPU_NOT_IDLE,
                             (void *)(long) smp_processor_id());
 }
 
@@ -103,7 +103,7 @@ extern void s390_handle_mcck(void);
 /*
  * The idle loop on a S390...
  */
-void default_idle(void)
+static void default_idle(void)
 {
         int cpu, rc;
 
@@ -116,7 +116,8 @@ void default_idle(void)
                 return;
         }
 
-        rc = notifier_call_chain(&idle_chain, CPU_IDLE, (void *)(long) cpu);
+        rc = atomic_notifier_call_chain(&idle_chain,
+                        CPU_IDLE, (void *)(long) cpu);
         if (rc != NOTIFY_OK && rc != NOTIFY_DONE)
                 BUG();
         if (rc != NOTIFY_OK) {