devlink: Create generic devlink health reporter search function

Add a generic __devlink_health_reporter_find_by_name() that can be used
with arbitrary devlink health reporter list.
Signed-off-by: Vladyslav Tarasiuk <vladyslavt@mellanox.com>
Reviewed-by: Moshe Shemesh <moshe@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/core/devlink.c

@@ -5309,18 +5309,28 @@ devlink_health_reporter_priv(struct devlink_health_reporter *reporter)
 EXPORT_SYMBOL_GPL(devlink_health_reporter_priv);
 
 static struct devlink_health_reporter *
-devlink_health_reporter_find_by_name(struct devlink *devlink,
+__devlink_health_reporter_find_by_name(struct list_head *reporter_list,
+				       struct mutex *list_lock,
 				       const char *reporter_name)
 {
 	struct devlink_health_reporter *reporter;
 
-	lockdep_assert_held(&devlink->reporters_lock);
-	list_for_each_entry(reporter, &devlink->reporter_list, list)
+	lockdep_assert_held(list_lock);
+	list_for_each_entry(reporter, reporter_list, list)
 		if (!strcmp(reporter->ops->name, reporter_name))
 			return reporter;
 	return NULL;
 }
 
+static struct devlink_health_reporter *
+devlink_health_reporter_find_by_name(struct devlink *devlink,
+				     const char *reporter_name)
+{
+	return __devlink_health_reporter_find_by_name(&devlink->reporter_list,
+						      &devlink->reporters_lock,
+						      reporter_name);
+}
+
 static struct devlink_health_reporter *
 __devlink_health_reporter_create(struct devlink *devlink,
 				 const struct devlink_health_reporter_ops *ops,