kzalloc() conversion in Documentation/

@@ -268,12 +268,10 @@ static struct config_item *simple_childr
 {
 	struct simple_child *simple_child;
 
-	simple_child = kmalloc(sizeof(struct simple_child), GFP_KERNEL);
+	simple_child = kzalloc(sizeof(struct simple_child), GFP_KERNEL);
 	if (!simple_child)
 		return NULL;
 
-	memset(simple_child, 0, sizeof(struct simple_child));
-
 	config_item_init_type_name(&simple_child->item, name,
 				   &simple_child_type);
 

@@ -353,13 +351,11 @@ static struct config_group *group_childr
 {
 	struct simple_children *simple_children;
 
-	simple_children = kmalloc(sizeof(struct simple_children),
+	simple_children = kzalloc(sizeof(struct simple_children),
 				  GFP_KERNEL);
 	if (!simple_children)
 		return NULL;
 
-	memset(simple_children, 0, sizeof(struct simple_children));
-
 	config_group_init_type_name(&simple_children->group, name,
 				    &simple_children_type);
 

@@ -124,10 +124,8 @@ static void cn_test_timer_func(unsigned 
 	struct cn_msg *m;
 	char data[32];
 
-	m = kmalloc(sizeof(*m) + sizeof(data), GFP_ATOMIC);
+	m = kzalloc(sizeof(*m) + sizeof(data), GFP_ATOMIC);
 	if (m) {
-		memset(m, 0, sizeof(*m) + sizeof(data));
-
 		memcpy(&m->id, &cn_test_id, sizeof(m->id));
 		m->seq = cn_test_timer_counter;
 		m->len = sizeof(data);