linux-kernel - [PATCH] ARM: at91: fix pm_suspend.S compilation when ARMv6 is selected

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Message-Id: <1426796080-18506-1-git-send-email-alexandre.belloni@free-electrons.com>
Date:	Thu, 19 Mar 2015 21:14:40 +0100
From:	Alexandre Belloni <alexandre.belloni@...e-electrons.com>
To:	Nicolas Ferre <nicolas.ferre@...el.com>
Cc:	Jean-Christophe Plagniol-Villard <plagnioj@...osoft.com>,
	Wenyou Yang <Wenyou.Yang@...el.com>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Boris Brezillon <boris.brezillon@...e-electrons.com>,
	Alexandre Belloni <alexandre.belloni@...e-electrons.com>
Subject: [PATCH] ARM: at91: fix pm_suspend.S compilation when ARMv6 is selected

When compiling for multiplatform for both ARMv6 and ARMv7, the default compiler
flags are for ARMv6, and results in:

arch/arm/mach-at91/pm_suspend.S:144: Error: selected processor does not support ARM mode `dsb'

Enforce ARMv7 flags for pm_suspend.o when CPU_V7 is selected.

Reported-by: fengguang.wu@...el.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@...e-electrons.com>
---
 arch/arm/mach-at91/Makefile | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm/mach-at91/Makefile b/arch/arm/mach-at91/Makefile
index 06a4cefd33a0..4fa8b4541e64 100644
--- a/arch/arm/mach-at91/Makefile
+++ b/arch/arm/mach-at91/Makefile
@@ -17,6 +17,9 @@ obj-$(CONFIG_SOC_SAMA5)		+= sama5.o
 obj-$(CONFIG_PM)		+= pm.o
 obj-$(CONFIG_PM)		+= pm_suspend.o
 
+ifeq ($(CONFIG_CPU_V7),y)
+AFLAGS_pm_suspend.o := -march=armv7-a
+endif
 ifeq ($(CONFIG_PM_DEBUG),y)
 CFLAGS_pm.o += -DDEBUG
 endif
-- 
2.1.0

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