Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfashe...

[karo-tx-linux.git] / drivers / mtd / mtdsuper.c

diff --git a/drivers/mtd/mtdsuper.c b/drivers/mtd/mtdsuper.c
index 9b430f20b640feadf1b9400dc322ee51628a8a9f..9b6af7e74a6541d9234a75eedd67d11412023b2c 100644 (file)
--- a/drivers/mtd/mtdsuper.c
+++ b/drivers/mtd/mtdsuper.c
@@ -125,7 +125,7 @@ int get_sb_mtd(struct file_system_type *fs_type, int flags,
               int (*fill_super)(struct super_block *, void *, int),
               struct vfsmount *mnt)
 {
-       struct nameidata nd;
+       struct block_device *bdev;
        int mtdnr, ret;
 
        if (!dev_name)
@@ -181,29 +181,20 @@ int get_sb_mtd(struct file_system_type *fs_type, int flags,
        /* try the old way - the hack where we allowed users to mount
         * /dev/mtdblock$(n) but didn't actually _use_ the blockdev
         */
-       ret = path_lookup(dev_name, LOOKUP_FOLLOW, &nd);
-
-       DEBUG(1, "MTDSB: path_lookup() returned %d, inode %p\n",
-             ret, nd.dentry ? nd.dentry->d_inode : NULL);
-
-       if (ret)
+       bdev = lookup_bdev(dev_name);
+       if (IS_ERR(bdev)) {
+               ret = PTR_ERR(bdev);
+               DEBUG(1, "MTDSB: lookup_bdev() returned %d\n", ret);
                return ret;
-
-       ret = -EINVAL;
-
-       if (!S_ISBLK(nd.dentry->d_inode->i_mode))
-               goto out;
-
-       if (nd.mnt->mnt_flags & MNT_NODEV) {
-               ret = -EACCES;
-               goto out;
        }
+       DEBUG(1, "MTDSB: lookup_bdev() returned 0\n");
 
-       if (imajor(nd.dentry->d_inode) != MTD_BLOCK_MAJOR)
+       ret = -EINVAL;
+       if (MAJOR(bdev->bd_dev) != MTD_BLOCK_MAJOR)
                goto not_an_MTD_device;
 
-       mtdnr = iminor(nd.dentry->d_inode);
-       path_release(&nd);
+       mtdnr = MINOR(bdev->bd_dev);
+       bdput(bdev);
 
        return get_sb_mtd_nr(fs_type, flags, dev_name, data, mtdnr, fill_super,
                             mnt);
@@ -213,10 +204,8 @@ not_an_MTD_device:
                printk(KERN_NOTICE
                       "MTD: Attempt to mount non-MTD device \"%s\"\n",
                       dev_name);
-out:
-       path_release(&nd);
+       bdput(bdev);
        return ret;
-
 }
 
 EXPORT_SYMBOL_GPL(get_sb_mtd);