mtd: switch open_mtd_by_chdev() to use of vfs_stat()

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

1 files changed, 5 insertions, 8 deletions

diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c
index 22fd19c0c5d3..a7d1febf667a 100644
--- a/drivers/mtd/ubi/build.c
+++ b/drivers/mtd/ubi/build.c
@@ -1142,22 +1142,19 @@ int ubi_detach_mtd_dev(int ubi_num, int anyway)
  */
 static struct mtd_info * __init open_mtd_by_chdev(const char *mtd_dev)
 {
-        int err, major, minor, mode;
-        struct path path;
+        struct kstat stat;
+        int err, minor;
 
         /* Probably this is an MTD character device node path */
-        err = kern_path(mtd_dev, LOOKUP_FOLLOW, &path);
+        err = vfs_stat(mtd_dev, &stat);
         if (err)
                 return ERR_PTR(err);
 
         /* MTD device number is defined by the major / minor numbers */
-        major = imajor(d_backing_inode(path.dentry));
-        minor = iminor(d_backing_inode(path.dentry));
-        mode = d_backing_inode(path.dentry)->i_mode;
-        path_put(&path);
-        if (major != MTD_CHAR_MAJOR || !S_ISCHR(mode))
+        if (MAJOR(stat.rdev) != MTD_CHAR_MAJOR || !S_ISCHR(stat.mode))
                 return ERR_PTR(-EINVAL);
 
+        minor = MINOR(stat.rdev);
         if (minor & 1)
                 /*
                  * Just do not think the "/dev/mtdrX" devices support is need,