linux-kernel - [PATCH] kcsan: fix debugfs initcall return type

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Date:   Fri, 14 May 2021 16:00:08 +0200
From:   Arnd Bergmann <arnd@...nel.org>
To:     Marco Elver <elver@...gle.com>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        "Paul E. McKenney" <paulmck@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Arnd Bergmann <arnd@...db.de>, Dmitry Vyukov <dvyukov@...gle.com>,
        kasan-dev@...glegroups.com, linux-kernel@...r.kernel.org,
        clang-built-linux@...glegroups.com
Subject: [PATCH] kcsan: fix debugfs initcall return type

From: Arnd Bergmann <arnd@...db.de>

clang points out that an initcall funciton should return an 'int':

kernel/kcsan/debugfs.c:274:15: error: returning 'void' from a function with incompatible result type 'int'
late_initcall(kcsan_debugfs_init);
~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~
include/linux/init.h:292:46: note: expanded from macro 'late_initcall'
 #define late_initcall(fn)               __define_initcall(fn, 7)

Fixes: e36299efe7d7 ("kcsan, debugfs: Move debugfs file creation out of early init")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 kernel/kcsan/debugfs.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/kernel/kcsan/debugfs.c b/kernel/kcsan/debugfs.c
index c1dd02f3be8b..e65de172ccf7 100644
--- a/kernel/kcsan/debugfs.c
+++ b/kernel/kcsan/debugfs.c
@@ -266,9 +266,10 @@ static const struct file_operations debugfs_ops =
 	.release = single_release
 };
 
-static void __init kcsan_debugfs_init(void)
+static int __init kcsan_debugfs_init(void)
 {
 	debugfs_create_file("kcsan", 0644, NULL, NULL, &debugfs_ops);
+	return 0;
 }
 
 late_initcall(kcsan_debugfs_init);
-- 
2.29.2