linux-kernel - [PATCH v2] kernfs: remove an unused if statement in kernfs_path_from_node

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Date:   Sat, 26 Nov 2022 19:16:34 +0800
From:   Zhen Lei <thunder.leizhen@...wei.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Tejun Heo <tj@...nel.org>, <linux-kernel@...r.kernel.org>
CC:     Zhen Lei <thunder.leizhen@...wei.com>
Subject: [PATCH v2] kernfs: remove an unused if statement in kernfs_path_from_node_locked()

It makes no sense to call kernfs_path_from_node_locked() with NULL buf,
and no one is doing that right now.

Suggested-by: Tejun Heo <tj@...nel.org>
Signed-off-by: Zhen Lei <thunder.leizhen@...wei.com>
---
 fs/kernfs/dir.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/fs/kernfs/dir.c b/fs/kernfs/dir.c
index f33b3baad07cb36..8a11bf189970274 100644
--- a/fs/kernfs/dir.c
+++ b/fs/kernfs/dir.c
@@ -149,9 +149,6 @@ static int kernfs_path_from_node_locked(struct kernfs_node *kn_to,
 	if (kn_from == kn_to)
 		return strlcpy(buf, "/", buflen);
 
-	if (!buf)
-		return -EINVAL;
-
 	common = kernfs_common_ancestor(kn_from, kn_to);
 	if (WARN_ON(!common))
 		return -EINVAL;
-- 
2.25.1