This is a note to let you know that I've just added the patch titled
Makefile: Move -Wno-unused-but-set-variable out of GCC only block
to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
makefile-move-wno-unused-but-set-variable-out-of-gcc-only-block.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 885480b084696331bea61a4f7eba10652999a9c1 Mon Sep 17 00:00:00 2001
From: Nathan Chancellor <nathan@xxxxxxxxxx>
Date: Wed, 28 Apr 2021 18:23:50 -0700
Subject: Makefile: Move -Wno-unused-but-set-variable out of GCC only block
From: Nathan Chancellor <nathan@xxxxxxxxxx>
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.
Cc: stable@xxxxxxxxxxxxxxx
Link: https://reviews.llvm.org/D100581
Signed-off-by: Nathan Chancellor <nathan@xxxxxxxxxx>
Reviewed-by: Nick Desaulniers <ndesaulniers@xxxxxxxxxx>
Tested-by: Nick Desaulniers <ndesaulniers@xxxxxxxxxx>
Signed-off-by: Masahiro Yamada <masahiroy@xxxxxxxxxx>
[nc: Backport, workaround lack of e2079e93f562 in older branches]
Signed-off-by: Nathan Chancellor <nathan@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
Makefile | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- a/Makefile
+++ b/Makefile
@@ -716,12 +716,11 @@ KBUILD_CFLAGS += $(call cc-disable-warni
# See modpost pattern 2
KBUILD_CFLAGS += $(call cc-option, -mno-global-merge,)
KBUILD_CFLAGS += $(call cc-option, -fcatch-undefined-behavior)
-else
+endif
# 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)
-endif
KBUILD_CFLAGS += $(call cc-disable-warning, unused-const-variable)
ifdef CONFIG_FRAME_POINTER
Patches currently in stable-queue which might be from nathan@xxxxxxxxxx are
queue-4.4/makefile-move-wno-unused-but-set-variable-out-of-gcc-only-block.patch
