From: Xiongfeng Wang Date: Thu, 11 Jan 2018 09:22:29 +0000 (+0800) Subject: Kbuild: suppress packed-not-aligned warning for default setting only X-Git-Tag: v3.18.129~41 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=7b1fe42a5e15c4a1856d83e1b7c539e482e27d70;p=profile%2Fwearable%2Fplatform%2Fkernel%2Flinux-3.18-exynos7270.git Kbuild: suppress packed-not-aligned warning for default setting only commit 321cb0308a9e76841394b4bbab6a1107cfedbae0 upstream. gcc-8 reports many -Wpacked-not-aligned warnings. The below are some examples. ./include/linux/ceph/msgr.h:67:1: warning: alignment 1 of 'struct ceph_entity_addr' is less than 8 [-Wpacked-not-aligned] } __attribute__ ((packed)); ./include/linux/ceph/msgr.h:67:1: warning: alignment 1 of 'struct ceph_entity_addr' is less than 8 [-Wpacked-not-aligned] } __attribute__ ((packed)); ./include/linux/ceph/msgr.h:67:1: warning: alignment 1 of 'struct ceph_entity_addr' is less than 8 [-Wpacked-not-aligned] } __attribute__ ((packed)); This patch suppresses this kind of warnings for default setting. Signed-off-by: Xiongfeng Wang Signed-off-by: Masahiro Yamada Signed-off-by: Greg Kroah-Hartman --- diff --git a/scripts/Makefile.extrawarn b/scripts/Makefile.extrawarn index 5c17a5c..9081b93 100644 --- a/scripts/Makefile.extrawarn +++ b/scripts/Makefile.extrawarn @@ -10,6 +10,8 @@ # are not supported by all versions of the compiler # ========================================================================== +KBUILD_CFLAGS += $(call cc-disable-warning, packed-not-aligned) + ifeq ("$(origin W)", "command line") export KBUILD_ENABLE_EXTRA_GCC_CHECKS := $(W) endif @@ -25,6 +27,7 @@ warning-1 += -Wold-style-definition warning-1 += $(call cc-option, -Wmissing-include-dirs) warning-1 += $(call cc-option, -Wunused-but-set-variable) warning-1 += $(call cc-option, -Wunused-const-variable) +warning-1 += $(call cc-option, -Wpacked-not-aligned) warning-1 += $(call cc-disable-warning, missing-field-initializers) warning-2 := -Waggregate-return