linux-kernel - [PATCH linux-next] ARM: mvebu: Fix pmsu compilation when ARMv6 is selected

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Message-Id: <1399407782-29091-1-git-send-email-vincent.stehle@laposte.net>
Date:	Tue,  6 May 2014 22:23:02 +0200
From:	Vincent Stehlé <vincent.stehle@...oste.net>
To:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linux-next@...r.kernel.org
Cc:	Vincent Stehlé <vincent.stehle@...oste.net>,
	Jason Cooper <jason@...edaemon.net>,
	Andrew Lunn <andrew@...n.ch>,
	Gregory Clement <gregory.clement@...e-electrons.com>,
	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
	Russell King <linux@....linux.org.uk>
Subject: [PATCH linux-next] ARM: mvebu: Fix pmsu compilation when ARMv6 is selected

When compiling for multiplatform for both ARMv6 and ARMv7, the default compiler
flags are for ARMv6, and we will get:

  /tmp/ccwDEzd0.s: Assembler messages:
  /tmp/ccwDEzd0.s:639: Error: selected processor does not support ARM mode `isb '
  /tmp/ccwDEzd0.s:645: Error: selected processor does not support ARM mode `isb '
  /tmp/ccwDEzd0.s:646: Error: selected processor does not support ARM mode `dsb '
  /tmp/ccwDEzd0.s:695: Error: selected processor does not support ARM mode `isb '
  make[1]: *** [arch/arm/mach-mvebu/pmsu.o] Error 1

Fix this in a similar manner than done previously in commit
72533b77d30c2be02672e26b5dde1263d7b4c2be, by specifying ARMv7 flags for pmsu.o.

Signed-off-by: Vincent Stehlé <vincent.stehle@...oste.net>
Cc: Jason Cooper <jason@...edaemon.net>
Cc: Andrew Lunn <andrew@...n.ch>
Cc: Gregory Clement <gregory.clement@...e-electrons.com>
Cc: Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
Cc: Russell King <linux@....linux.org.uk>
---

Hi,

This build issue can be seen with e.g. Linux next-20140506, ARCH=arm and
allmodconfig.

Best regards,

V.

 arch/arm/mach-mvebu/Makefile | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/mach-mvebu/Makefile b/arch/arm/mach-mvebu/Makefile
index 854b72a..2ecb828 100644
--- a/arch/arm/mach-mvebu/Makefile
+++ b/arch/arm/mach-mvebu/Makefile
@@ -2,6 +2,7 @@ ccflags-$(CONFIG_ARCH_MULTIPLATFORM) := -I$(srctree)/$(src)/include \
 	-I$(srctree)/arch/arm/plat-orion/include
 
 AFLAGS_coherency_ll.o		:= -Wa,-march=armv7-a
+CFLAGS_pmsu.o			:= -march=armv7-a
 
 obj-y				 += system-controller.o mvebu-soc-id.o
 
-- 
1.9.2

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