[PATCH 4.2.y-ckt 25/59] ARM: SoCFPGA: Fix secondary CPU startup in thumb2 kernel

[Kamal Mostafa]

4.2.8-ckt10 -stable review patch.  If anyone has any objections, please let me know.

---8<------------------------------------------------------------

From: Sascha Hauer <s.hauer at pengutronix.de>

commit 5616f36713ea77f57ae908bf2fef641364403c9f upstream.

The secondary CPU starts up in ARM mode. When the kernel is compiled in
thumb2 mode we have to explicitly compile the secondary startup
trampoline in ARM mode, otherwise the CPU will go to Nirvana.

Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
Reported-by: Steffen Trumtrar <s.trumtrar at pengutronix.de>
Suggested-by: Ard Biesheuvel <ard.biesheuvel at linaro.org>
Signed-off-by: Dinh Nguyen <dinguyen at opensource.altera.com>
Signed-off-by: Kevin Hilman <khilman at baylibre.com>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
 arch/arm/mach-socfpga/headsmp.S | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/mach-socfpga/headsmp.S b/arch/arm/mach-socfpga/headsmp.S
index 5d94b7a..c160fa3 100644
--- a/arch/arm/mach-socfpga/headsmp.S
+++ b/arch/arm/mach-socfpga/headsmp.S
@@ -13,6 +13,7 @@
 #include <asm/assembler.h>
 
 	.arch	armv7-a
+	.arm
 
 ENTRY(secondary_trampoline)
 	/* CPU1 will always fetch from 0x0 when it is brought out of reset.
-- 
2.7.4