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authorRikard Falkeborn <rikard.falkeborn@gmail.com>2020-07-08 21:07:56 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2020-07-09 18:00:56 -0700
commit355a3587d4ca09f2b1014778a7c8908351a91468 (patch)
treec86c195dd079efac1e763456f9b2b0ddd11dec4f
parent2a89b99f580371b86ae9bafd6cbeccd3bfab524a (diff)
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: https://lore.kernel.org/lkml/CAHk-=wiKCXEWKJ9dWUimGbrVRo_N2RosESUw8E7m9AEtyZcu=w@mail.gmail.com/ Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com> Suggested-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--scripts/Makefile.extrawarn2
1 files changed, 2 insertions, 0 deletions
diff --git a/scripts/Makefile.extrawarn b/scripts/Makefile.extrawarn
index 4aea7cf71d11..62c275685b75 100644
--- a/scripts/Makefile.extrawarn
+++ b/scripts/Makefile.extrawarn
@@ -35,6 +35,7 @@ KBUILD_CFLAGS += $(call cc-option, -Wstringop-truncation)
# 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)