+ kbuild-move-wtype-limits-to-w=2.patch added to -mm tree

[Andrew Morton <akpm@linux-foundation.org>]

The patch titled
     Subject: kbuild: move -Wtype-limits to W=2
has been added to the -mm tree.  Its filename is
     kbuild-move-wtype-limits-to-w=2.patch

This patch should soon appear at
    http://ozlabs.org/~akpm/mmots/broken-out/kbuild-move-wtype-limits-to-w%3D2.patch
and later at
    http://ozlabs.org/~akpm/mmotm/broken-out/kbuild-move-wtype-limits-to-w%3D2.patch

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------------------------------------------------------
From: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Subject: kbuild: move -Wtype-limits to W=2

-Wtype-limits is included in -Wextra which is added at W=1.  It warns
(among other things) that 'comparison of an unsigned variable `< 0` is
always false.  This causes noisy warnings, especially when used in macros,
hence it is more suitable for W=2.

Link: http://lkml.kernel.org/r/20200708190756.16810-1-rikard.falkeborn@gmail.com
Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Emil Velikov <emil.l.velikov@gmail.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Syed Nayyar Waris <syednwaris@gmail.com>
Cc: William Breathitt Gray <vilhelm.gray@gmail.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Michal Marek <michal.lkml@markovi.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 scripts/Makefile.extrawarn |    2 ++
 1 file changed, 2 insertions(+)

--- a/scripts/Makefile.extrawarn~kbuild-move-wtype-limits-to-w=2
+++ a/scripts/Makefile.extrawarn
@@ -35,6 +35,7 @@ KBUILD_CFLAGS += $(call cc-option, -Wstr
 # The following turn off the warnings enabled by -Wextra
 KBUILD_CFLAGS += -Wno-missing-field-initializers
 KBUILD_CFLAGS += -Wno-sign-compare
+KBUILD_CFLAGS += -Wno-type-limits
 
 KBUILD_CPPFLAGS += -DKBUILD_EXTRA_WARN1
 
@@ -66,6 +67,7 @@ KBUILD_CFLAGS += -Wshadow
 KBUILD_CFLAGS += $(call cc-option, -Wlogical-op)
 KBUILD_CFLAGS += -Wmissing-field-initializers
 KBUILD_CFLAGS += -Wsign-compare
+KBUILD_CFLAGS += -Wtype-limits
 KBUILD_CFLAGS += $(call cc-option, -Wmaybe-uninitialized)
 KBUILD_CFLAGS += $(call cc-option, -Wunused-macros)
 
_

Patches currently in -mm which might be from rikard.falkeborn@gmail.com are

kbuild-move-wtype-limits-to-w=2.patch
bits-add-tests-of-genmask.patch