9p: return NULL when trans not found

v9fs_match_trans function returns arbitrary transport module instead of NULL
when the requested transport is not registered. This patch modifies the
function to return NULL in that case.

Signed-off-by: Latchesar Ionkov <lucho@ionkov.net>
Acked-by: Eric Van Hensbergen <ericvh@gmail.com>

diff --git a/net/9p/mod.c b/net/9p/mod.c
index 41d70f4..8f9763a 100644 (file)
--- a/net/9p/mod.c
+++ b/net/9p/mod.c
@@ -76,9 +76,9 @@ struct p9_trans_module *v9fs_match_trans(const substring_t *name)
        list_for_each(p, &v9fs_trans_list) {
                t = list_entry(p, struct p9_trans_module, list);
                if (strncmp(t->name, name->from, name->to-name->from) == 0)
-                       break;
+                       return t;
        }
-       return t;
+       return NULL;
 }
 EXPORT_SYMBOL(v9fs_match_trans);