linux-kernel - [PATCH] alloc_tag: Use %pe format specifier

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Message-Id: <20251105023925.1447482-1-zeng_chi911@163.com>
Date: Wed,  5 Nov 2025 10:39:25 +0800
From: zeng_chi911@....com
To: akpm@...ux-foundation.org,
	surenb@...gle.com,
	kent.overstreet@...ux.dev
Cc: linux-kernel@...r.kernel.org,
	linux-mm@...ck.org,
	zengchi@...inos.cn
Subject: [PATCH] alloc_tag: Use %pe format specifier

From: Zeng Chi <zengchi@...inos.cn>

The %pe format specifier is designed to print error pointers. It prints
a symbolic error name (eg. -EINVAL) and it makes the code simpler by
omitting PTR_ERR();

This patch fixes this cocci report:
lib/alloc_tag.c:776:63-70: WARNING: Consider using %pe to print PTR_ERR()

Signed-off-by: Zeng Chi <zengchi@...inos.cn>
---
 lib/alloc_tag.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/alloc_tag.c b/lib/alloc_tag.c
index f26456988445..27fee57a5c91 100644
--- a/lib/alloc_tag.c
+++ b/lib/alloc_tag.c
@@ -845,7 +845,7 @@ static int __init alloc_tag_init(void)
 
 	alloc_tag_cttype = codetag_register_type(&desc);
 	if (IS_ERR(alloc_tag_cttype)) {
-		pr_err("Allocation tags registration failed, errno = %ld\n", PTR_ERR(alloc_tag_cttype));
+		pr_err("Allocation tags registration failed, errno = %pe\n", alloc_tag_cttype);
 		free_mod_tags_mem();
 		shutdown_mem_profiling(true);
 		return PTR_ERR(alloc_tag_cttype);
-- 
2.25.1