linux-kernel - [PATCH v3 5/5] ARM: warn if divided syntax assembler is used

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Date:   Tue, 12 Feb 2019 21:02:01 +0100
From:   Stefan Agner <stefan@...er.ch>
To:     linux@...linux.org.uk
Cc:     ndesaulniers@...gle.com, natechancellor@...il.com, arnd@...db.de,
        ard.biesheuvel@...aro.org, nicolas.pitre@...aro.org,
        thierry.reding@...il.com, will.deacon@....com,
        julien.thierry@....com, mark.rutland@....com,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Stefan Agner <stefan@...er.ch>, Nicolas Pitre <nico@...aro.org>
Subject: [PATCH v3 5/5] ARM: warn if divided syntax assembler is used

Remove the -mno-warn-deprecated assembler flag to make sure the GNU
assembler warns in case non-unified syntax is used.

Signed-off-by: Stefan Agner <stefan@...er.ch>
Acked-by: Nicolas Pitre <nico@...aro.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@...gle.com>
---
Changes in v2:
- Remove AFLAGS_NOWARN from CFLAGS_ISA

 arch/arm/Makefile | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index a0d08a3c9d33..9561325c5201 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -112,19 +112,16 @@ ifeq ($(CONFIG_ARM_UNWIND),y)
 CFLAGS_ABI	+=-funwind-tables
 endif
 
-# Accept old syntax despite ".syntax unified"
-AFLAGS_NOWARN	:=$(call as-option,-Wa$(comma)-mno-warn-deprecated,-Wa$(comma)-W)
-
 ifeq ($(CONFIG_THUMB2_KERNEL),y)
 AFLAGS_AUTOIT	:=$(call as-option,-Wa$(comma)-mimplicit-it=always,-Wa$(comma)-mauto-it)
-CFLAGS_ISA	:=-mthumb $(AFLAGS_AUTOIT) $(AFLAGS_NOWARN)
+CFLAGS_ISA	:=-mthumb $(AFLAGS_AUTOIT)
 AFLAGS_ISA	:=$(CFLAGS_ISA) -Wa$(comma)-mthumb
 # Work around buggy relocation from gas if requested:
 ifeq ($(CONFIG_THUMB2_AVOID_R_ARM_THM_JUMP11),y)
 KBUILD_CFLAGS_MODULE	+=-fno-optimize-sibling-calls
 endif
 else
-CFLAGS_ISA	:=$(call cc-option,-marm,) $(AFLAGS_NOWARN)
+CFLAGS_ISA	:=$(call cc-option,-marm,)
 AFLAGS_ISA	:=$(CFLAGS_ISA)
 endif
 
-- 
2.20.1