Re: [PATCH] net/dsa: remove unused macros to tame gcc warning

[Joe Perches]

On Fri, 2020-11-06 at 13:37 +0800, Alex Shi wrote:
> There are some macros unused, they causes much gcc warnings. Let's
> remove them to tame gcc.

I believe these to be essentially poor warnings.

Aren't these warnings generated only when adding  W=2 to the make
command line?

Perhaps it's better to move the warning to level 3
---
diff --git a/scripts/Makefile.extrawarn b/scripts/Makefile.extrawarn
index 95e4cdb94fe9..5c3c220ddb32 100644
--- a/scripts/Makefile.extrawarn
+++ b/scripts/Makefile.extrawarn
@@ -68,7 +68,6 @@ KBUILD_CFLAGS += $(call cc-option, -Wlogical-op)
 KBUILD_CFLAGS += -Wmissing-field-initializers
 KBUILD_CFLAGS += -Wtype-limits
 KBUILD_CFLAGS += $(call cc-option, -Wmaybe-uninitialized)
-KBUILD_CFLAGS += $(call cc-option, -Wunused-macros)
 
 KBUILD_CPPFLAGS += -DKBUILD_EXTRA_WARN2
 
@@ -89,6 +88,7 @@ KBUILD_CFLAGS += -Wredundant-decls
 KBUILD_CFLAGS += -Wsign-compare
 KBUILD_CFLAGS += -Wswitch-default
 KBUILD_CFLAGS += $(call cc-option, -Wpacked-bitfield-compat)
+KBUILD_CFLAGS += $(call cc-option, -Wunused-macros)
 
 KBUILD_CPPFLAGS += -DKBUILD_EXTRA_WARN3