linux-kernel - [PATCH] mm/page_owner: Use PTR_ERR_OR

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Date:   Tue, 28 Nov 2017 00:08:21 +0100
From:   Vasyl Gomonovych <gomonovych@...il.com>
To:     vbabka@...e.cz, akpm@...ux-foundation.org, mhocko@...e.com,
        gregkh@...uxfoundation.org, tglx@...utronix.de,
        vinmenon@...eaurora.org, guptap@...eaurora.org, linux-mm@...ck.org
Cc:     gomonovych@...il.com, linux-kernel@...r.kernel.org
Subject: [PATCH] mm/page_owner: Use PTR_ERR_OR_ZERO()

Fix ptr_ret.cocci warnings:
mm/page_owner.c:639:1-3: WARNING: PTR_ERR_OR_ZERO can be used

Use PTR_ERR_OR_ZERO rather than if(IS_ERR(...)) + PTR_ERR

Generated by: scripts/coccinelle/api/ptr_ret.cocci

Signed-off-by: Vasyl Gomonovych <gomonovych@...il.com>
---
 mm/page_owner.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/mm/page_owner.c b/mm/page_owner.c
index 4f44b95b9d1e..79ae586d1bce 100644
--- a/mm/page_owner.c
+++ b/mm/page_owner.c
@@ -636,9 +636,7 @@ static int __init pageowner_init(void)
 
 	dentry = debugfs_create_file("page_owner", S_IRUSR, NULL,
 			NULL, &proc_page_owner_operations);
-	if (IS_ERR(dentry))
-		return PTR_ERR(dentry);
 
-	return 0;
+	return PTR_ERR_OR_ZERO(dentry);
 }
 late_initcall(pageowner_init)
-- 
1.9.1