--- zzzz-none-000/linux-3.10.107/fs/efivarfs/inode.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/fs/efivarfs/inode.c	2021-02-04 17:41:59.000000000 +0000
@@ -153,30 +153,18 @@
 
 static int efivarfs_unlink(struct inode *dir, struct dentry *dentry)
 {
-	struct efivar_entry *var = dentry->d_inode->i_private;
+	struct efivar_entry *var = d_inode(dentry)->i_private;
 
 	if (efivar_entry_delete(var))
 		return -EINVAL;
 
-	drop_nlink(dentry->d_inode);
+	drop_nlink(d_inode(dentry));
 	dput(dentry);
 	return 0;
 };
 
-/*
- * Handle negative dentry.
- */
-static struct dentry *efivarfs_lookup(struct inode *dir, struct dentry *dentry,
-				      unsigned int flags)
-{
-	if (dentry->d_name.len > NAME_MAX)
-		return ERR_PTR(-ENAMETOOLONG);
-	d_add(dentry, NULL);
-	return NULL;
-}
-
 const struct inode_operations efivarfs_dir_inode_operations = {
-	.lookup = efivarfs_lookup,
+	.lookup = simple_lookup,
 	.unlink = efivarfs_unlink,
 	.create = efivarfs_create,
 };