From e4c9a491c8ea74facf590a406744f38ae907ddc4 Mon Sep 17 00:00:00 2001
From: Jiuzhu Dong <dongjiuzhu1@xiaomi.com>
Date: Fri, 1 Apr 2022 12:12:34 +0800
Subject: [PATCH] fs/unionfs: check return value to avoid unused value

Signed-off-by: Jiuzhu Dong <dongjiuzhu1@xiaomi.com>
---
 fs/unionfs/fs_unionfs.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/fs/unionfs/fs_unionfs.c b/fs/unionfs/fs_unionfs.c
index 13979a40bb0..704d916822b 100644
--- a/fs/unionfs/fs_unionfs.c
+++ b/fs/unionfs/fs_unionfs.c
@@ -1856,6 +1856,10 @@ static int unionfs_readdir(struct inode *mountpt, struct fs_dirent_s *dir)
                   if (ops->rewinddir != NULL)
                     {
                       ret = ops->rewinddir(um->um_node, fu->fu_lower[1]);
+                      if (ret < 0)
+                        {
+                          return ret;
+                        }
                     }
 
                   /* Then try the read operation again */