3 files changed, 15 insertions, 14 deletions

diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index 2f3fdad35594..e20c1fae3423 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -579,7 +579,8 @@ void __init setup_arch(char **cmdline_p)
         panic_timeout = 180;
 
         if (ppc_md.panic)
-                notifier_chain_register(&panic_notifier_list, &ppc64_panic_block);
+                atomic_notifier_chain_register(&panic_notifier_list,
+                                &ppc64_panic_block);
 
         init_mm.start_code = PAGE_OFFSET;
         init_mm.end_code = (unsigned long) _etext;
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index 98660aedeeb7..9763faab6739 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -74,19 +74,19 @@ EXPORT_SYMBOL(__debugger_dabr_match);
 EXPORT_SYMBOL(__debugger_fault_handler);
 #endif
 
-struct notifier_block *powerpc_die_chain;
-static DEFINE_SPINLOCK(die_notifier_lock);
+ATOMIC_NOTIFIER_HEAD(powerpc_die_chain);
 
 int register_die_notifier(struct notifier_block *nb)
 {
-        int err = 0;
-        unsigned long flags;
+        return atomic_notifier_chain_register(&powerpc_die_chain, nb);
+}
+EXPORT_SYMBOL(register_die_notifier);
 
-        spin_lock_irqsave(&die_notifier_lock, flags);
-        err = notifier_chain_register(&powerpc_die_chain, nb);
-        spin_unlock_irqrestore(&die_notifier_lock, flags);
-        return err;
+int unregister_die_notifier(struct notifier_block *nb)
+{
+        return atomic_notifier_chain_unregister(&powerpc_die_chain, nb);
 }
+EXPORT_SYMBOL(unregister_die_notifier);
 
 /*
  * Trap & Exception support
diff --git a/arch/powerpc/platforms/pseries/reconfig.c b/arch/powerpc/platforms/pseries/reconfig.c
index 86cfa6ecdcf3..5ad90676567a 100644
--- a/arch/powerpc/platforms/pseries/reconfig.c
+++ b/arch/powerpc/platforms/pseries/reconfig.c
@@ -94,16 +94,16 @@ static struct device_node *derive_parent(const char *path)
         return parent;
 }
 
-static struct notifier_block *pSeries_reconfig_chain;
+static BLOCKING_NOTIFIER_HEAD(pSeries_reconfig_chain);
 
 int pSeries_reconfig_notifier_register(struct notifier_block *nb)
 {
-        return notifier_chain_register(&pSeries_reconfig_chain, nb);
+        return blocking_notifier_chain_register(&pSeries_reconfig_chain, nb);
 }
 
 void pSeries_reconfig_notifier_unregister(struct notifier_block *nb)
 {
-        notifier_chain_unregister(&pSeries_reconfig_chain, nb);
+        blocking_notifier_chain_unregister(&pSeries_reconfig_chain, nb);
 }
 
 static int pSeries_reconfig_add_node(const char *path, struct property *proplist)
@@ -131,7 +131,7 @@ static int pSeries_reconfig_add_node(const char *path, struct property *proplist
                 goto out_err;
         }
 
-        err = notifier_call_chain(&pSeries_reconfig_chain,
+        err = blocking_notifier_call_chain(&pSeries_reconfig_chain,
                                   PSERIES_RECONFIG_ADD, np);
         if (err == NOTIFY_BAD) {
                 printk(KERN_ERR "Failed to add device node %s\n", path);
@@ -171,7 +171,7 @@ static int pSeries_reconfig_remove_node(struct device_node *np)
 
         remove_node_proc_entries(np);
 
-        notifier_call_chain(&pSeries_reconfig_chain,
+        blocking_notifier_call_chain(&pSeries_reconfig_chain,
                             PSERIES_RECONFIG_REMOVE, np);
         of_detach_node(np);