switch open-coded instances of d_make_root() to new helper

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

3 files changed, 4 insertions, 17 deletions

diff --git a/drivers/usb/core/inode.c b/drivers/usb/core/inode.c
index 9e186f3da839..bdaef8e36020 100644
--- a/drivers/usb/core/inode.c
+++ b/drivers/usb/core/inode.c
@@ -462,16 +462,9 @@ static int usbfs_fill_super(struct super_block *sb, void *data, int silent)
         sb->s_op = &usbfs_ops;
         sb->s_time_gran = 1;
         inode = usbfs_get_inode(sb, S_IFDIR | 0755, 0);
-
-        if (!inode) {
-                dbg("%s: could not get inode!",__func__);
-                return -ENOMEM;
-        }
-
-        root = d_alloc_root(inode);
+        root = d_make_root(inode);
         if (!root) {
                 dbg("%s: could not get root dentry!",__func__);
-                iput(inode);
                 return -ENOMEM;
         }
         sb->s_root = root;
diff --git a/drivers/usb/gadget/f_fs.c b/drivers/usb/gadget/f_fs.c
index f63dc6c150d2..d825b248728a 100644
--- a/drivers/usb/gadget/f_fs.c
+++ b/drivers/usb/gadget/f_fs.c
@@ -1063,13 +1063,9 @@ static int ffs_sb_fill(struct super_block *sb, void *_data, int silent)
                                   &simple_dir_operations,
                                   &simple_dir_inode_operations,
                                   &data->perms);
-        if (unlikely(!inode))
+        sb->s_root = d_make_root(inode);
+        if (unlikely(!sb->s_root))
                 goto Enomem;
-        sb->s_root = d_alloc_root(inode);
-        if (unlikely(!sb->s_root)) {
-                iput(inode);
-                goto Enomem;
-        }
 
         /* EP0 file */
         if (unlikely(!ffs_sb_create_file(sb, "ep0", ffs,
diff --git a/drivers/usb/gadget/inode.c b/drivers/usb/gadget/inode.c
index ae04266dba1b..c95eea43b637 100644
--- a/drivers/usb/gadget/inode.c
+++ b/drivers/usb/gadget/inode.c
@@ -2059,10 +2059,8 @@ gadgetfs_fill_super (struct super_block *sb, void *opts, int silent)
         if (!inode)
                 goto Enomem;
         inode->i_op = &simple_dir_inode_operations;
-        if (!(sb->s_root = d_alloc_root (inode))) {
-                iput(inode);
+        if (!(sb->s_root = d_make_root (inode)))
                 goto Enomem;
-        }
 
         /* the ep0 file is named after the controller we expect;
          * user mode code can use it for sanity checks, like we do.