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Date: Tue, 3 Mar 2020 14:52:09 +0800 From: Zhenzhong Duan <zhenzhong.duan@...il.com> To: linux-kernel@...r.kernel.org Cc: x86@...nel.org, tglx@...utronix.de, mingo@...hat.com, bp@...en8.de, zhenzhong.duan@...il.com, "H. Peter Anvin" <hpa@...or.com> Subject: [PATCH 1/2] x86/boot: Add -Wunused to KBUILD_CFLAGS Compile warning option in arch/x86/boot/compressed is different from other part of the kernel for some history reason. But "-Wunused" is safe to be added to point out unused variable issue. Link: https://lore.kernel.org/patchwork/patch/1175001/#1379873 Suggested-by: Borislav Petkov <bp@...en8.de> Signed-off-by: Zhenzhong Duan <zhenzhong.duan@...il.com> Cc: Thomas Gleixner <tglx@...utronix.de> Cc: Ingo Molnar <mingo@...hat.com> Cc: "H. Peter Anvin" <hpa@...or.com> --- arch/x86/boot/compressed/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/boot/compressed/Makefile b/arch/x86/boot/compressed/Makefile index 26050ae0b27e..cb9743ec453a 100644 --- a/arch/x86/boot/compressed/Makefile +++ b/arch/x86/boot/compressed/Makefile @@ -37,7 +37,7 @@ KBUILD_CFLAGS += $(call cc-option,-ffreestanding) KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector) KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member) KBUILD_CFLAGS += $(call cc-disable-warning, gnu) -KBUILD_CFLAGS += -Wno-pointer-sign +KBUILD_CFLAGS += -Wno-pointer-sign -Wunused KBUILD_CFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=) KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__ -- 2.17.1
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