[PATCH v2] kbuild: enforce -Werror=unused-result

[Olaf Hering]

It is a hard error if a return value is ignored.
In case the return value has no meaning, remove the attribute.

Signed-off-by: Olaf Hering <olaf@xxxxxxxxx>
---
v2:
  resend

 Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index a28bb374663d..9b7def6db494 100644
--- a/Makefile
+++ b/Makefile
@@ -495,7 +495,7 @@ KBUILD_AFLAGS   := -D__ASSEMBLY__ -fno-PIE
 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 \
-		   -Werror=return-type -Wno-format-security \
+		   -Werror=return-type -Werror=unused-result -Wno-format-security \
 		   -std=gnu89
 KBUILD_CPPFLAGS := -D__KERNEL__
 KBUILD_AFLAGS_KERNEL :=