mtd: switch ubi_open_volume_path() to vfs_stat()

 */

struct ubi_volume_desc *ubi_open_volume_path(const char *pathname, int mode)

{

	int error, ubi_num, vol_id, mod;

	struct inode *inode;

	struct path path;

	int error, ubi_num, vol_id;

	struct kstat stat;

	dbg_gen("open volume %s, mode %d", pathname, mode);

	if (!pathname || !*pathname)

		return ERR_PTR(-EINVAL);

	error = kern_path(pathname, LOOKUP_FOLLOW, &path);

	error = vfs_stat(pathname, &stat);

	if (error)

		return ERR_PTR(error);

	inode = d_backing_inode(path.dentry);

	mod = inode->i_mode;

	ubi_num = ubi_major2num(imajor(inode));

	vol_id = iminor(inode) - 1;

	path_put(&path);

	if (!S_ISCHR(mod))

	if (!S_ISCHR(stat.mode))

		return ERR_PTR(-EINVAL);

	ubi_num = ubi_major2num(MAJOR(stat.rdev));

	vol_id = MINOR(stat.rdev) - 1;

	if (vol_id >= 0 && ubi_num >= 0)

		return ubi_open_volume(ubi_num, vol_id, mode);

	return ERR_PTR(-ENODEV);