mtd: blkdevs: Fix mtd block write failure

[karo-tx-linux.git] / fs / filesystems.c

diff --git a/fs/filesystems.c b/fs/filesystems.c
index cac75547d35ccb163a6ce0e94c786c1fd150e5db..a920ad2629ac73481cc9c5e2cd38d3ba4b8915dd 100644 (file)
--- a/fs/filesystems.c
+++ b/fs/filesystems.c
@@ -33,9 +33,10 @@ static struct file_system_type *file_systems;
 static DEFINE_RWLOCK(file_systems_lock);
 
 /* WARNING: This can be used only if we _already_ own a reference */
-void get_filesystem(struct file_system_type *fs)
+struct file_system_type *get_filesystem(struct file_system_type *fs)
 {
        __module_get(fs->owner);
+       return fs;
 }
 
 void put_filesystem(struct file_system_type *fs)
@@ -275,8 +276,10 @@ struct file_system_type *get_fs_type(const char *name)
        int len = dot ? dot - name : strlen(name);
 
        fs = __get_fs_type(name, len);
-       if (!fs && (request_module("fs-%.*s", len, name) == 0))
+       if (!fs && (request_module("fs-%.*s", len, name) == 0)) {
                fs = __get_fs_type(name, len);
+               WARN_ONCE(!fs, "request_module fs-%.*s succeeded, but still no fs?\n", len, name);
+       }
 
        if (dot && fs && !(fs->fs_flags & FS_HAS_SUBTYPE)) {
                put_filesystem(fs);