[PATCH 5.4 01/76] kbuild: enforce -Werror=return-type

Greg Kroah-Hartman
2021-01-18T19:22:36Z

From: Olaf Hering <olaf@aepfle.de>

commit 172aad81a882443eefe1bd860c4eddc81b14dd5b upstream.

Catch errors which at least gcc tolerates by default:
warning: 'return' with no value, in function returning non-void [-Wreturn-type]

Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Cc: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/Makefile
+++ b/Makefile
@@ -480,7 +480,7 @@ KBUILD_AFLAGS := -D__ASSEMBLY__ -fno-P
KBUILD_CFLAGS := -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs \
-fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE \
-Werror=implicit-function-declaration -Werror=implicit-int \
- -Wno-format-security \
+ -Werror=return-type -Wno-format-security \
-std=gnu89
KBUILD_CPPFLAGS := -D__KERNEL__
KBUILD_AFLAGS_KERNEL :=