kcsan: Fix debugfs initcall return type

commit 976aac5f882989e4f6c1b3a7224819bf0e801c6a upstream.

clang with CONFIG_LTO_CLANG points out that an initcall function should
return an 'int' due to the changes made to the initcall macros in commit
3578ad11f3fb ("init: lto: fix PREL32 relocations"):

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")
Cc: stable <stable@vger.kernel.org>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Marco Elver <elver@google.com>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/kernel/kcsan/debugfs.c b/kernel/kcsan/debugfs.c
index 209ad8dcfcecfaec0f9c4244baad813de7bb0a4b..62a52be8f6ba946bbab60c8902cea069db2ec74a 100644 (file)
--- a/kernel/kcsan/debugfs.c
+++ b/kernel/kcsan/debugfs.c
@@ -261,9 +261,10 @@ 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);