Merge with git+ssh://master.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git

1 files changed, 6 insertions, 16 deletions

diff --git a/kernel/module.c b/kernel/module.c
index ddfe45ac2fd..bd088a7c149 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -64,26 +64,17 @@ static DEFINE_SPINLOCK(modlist_lock);
 static DEFINE_MUTEX(module_mutex);
 static LIST_HEAD(modules);
 
-static DEFINE_MUTEX(notify_mutex);
-static struct notifier_block * module_notify_list;
+static BLOCKING_NOTIFIER_HEAD(module_notify_list);
 
 int register_module_notifier(struct notifier_block * nb)
 {
-	int err;
-	mutex_lock(&notify_mutex);
-	err = notifier_chain_register(&module_notify_list, nb);
-	mutex_unlock(&notify_mutex);
-	return err;
+	return blocking_notifier_chain_register(&module_notify_list, nb);
 }
 EXPORT_SYMBOL(register_module_notifier);
 
 int unregister_module_notifier(struct notifier_block * nb)
 {
-	int err;
-	mutex_lock(&notify_mutex);
-	err = notifier_chain_unregister(&module_notify_list, nb);
-	mutex_unlock(&notify_mutex);
-	return err;
+	return blocking_notifier_chain_unregister(&module_notify_list, nb);
 }
 EXPORT_SYMBOL(unregister_module_notifier);
 
@@ -136,7 +127,7 @@ extern const unsigned long __start___kcrctab_gpl_future[];
 #ifndef CONFIG_MODVERSIONS
 #define symversion(base, idx) NULL
 #else
-#define symversion(base, idx) ((base) ? ((base) + (idx)) : NULL)
+#define symversion(base, idx) ((base != NULL) ? ((base) + (idx)) : NULL)
 #endif
 
 /* lookup symbol in given range of kernel_symbols */
@@ -1816,9 +1807,8 @@ sys_init_module(void __user *umod,
 	/* Drop lock so they can recurse */
 	mutex_unlock(&module_mutex);
 
-	mutex_lock(&notify_mutex);
-	notifier_call_chain(&module_notify_list, MODULE_STATE_COMING, mod);
-	mutex_unlock(&notify_mutex);
+	blocking_notifier_call_chain(&module_notify_list,
+			MODULE_STATE_COMING, mod);
 
 	/* Start the module */
 	if (mod->init != NULL)