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Subject[PATCH 4.4 44/57] Makefile: Move -Wno-unused-but-set-variable out of GCC only block
From: Nathan Chancellor <>

commit 885480b084696331bea61a4f7eba10652999a9c1 upstream.

Currently, -Wunused-but-set-variable is only supported by GCC so it is
disabled unconditionally in a GCC only block (it is enabled with W=1).
clang currently has its implementation for this warning in review so
preemptively move this statement out of the GCC only block and wrap it
with cc-disable-warning so that both compilers function the same.

Signed-off-by: Nathan Chancellor <>
Reviewed-by: Nick Desaulniers <>
Tested-by: Nick Desaulniers <>
Signed-off-by: Masahiro Yamada <>
[nc: Backport, workaround lack of e2079e93f562 in older branches]
Signed-off-by: Nathan Chancellor <>
Signed-off-by: Greg Kroah-Hartman <>
Makefile | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index 78a317e69e7f..691072b50fb5 100644
--- a/Makefile
+++ b/Makefile
@@ -716,12 +716,11 @@ KBUILD_CFLAGS += $(call cc-disable-warning, tautological-compare)
# See modpost pattern 2
KBUILD_CFLAGS += $(call cc-option, -mno-global-merge,)
KBUILD_CFLAGS += $(call cc-option, -fcatch-undefined-behavior)

# These warnings generated too much noise in a regular build.
# Use make W=1 to enable them (see scripts/Makefile.extrawarn)
KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable)

KBUILD_CFLAGS += $(call cc-disable-warning, unused-const-variable)
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