[3.19.y-ckt stable] Patch "ARM: SoCFPGA: Fix secondary CPU startup in thumb2 kernel" has been added to the 3.19.y-ckt tree

[Kamal Mostafa]

This is a note to let you know that I have just added a patch titled

    ARM: SoCFPGA: Fix secondary CPU startup in thumb2 kernel

to the linux-3.19.y-queue branch of the 3.19.y-ckt extended stable tree 
which can be found at:

    https://git.launchpad.net/~canonical-kernel/linux/+git/linux-stable-ckt/log/?h=linux-3.19.y-queue

This patch is scheduled to be released in version 3.19.8-ckt21.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.19.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Kamal

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

>From 8a3a98eec9f6989a095e668eb10fe2e393f77b91 Mon Sep 17 00:00:00 2001
From: Sascha Hauer <s.hauer at pengutronix.de>
Date: Wed, 20 Apr 2016 13:34:31 +0000
Subject: ARM: SoCFPGA: Fix secondary CPU startup in thumb2 kernel

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 f65ea0a..a2b1c4a 100644
--- a/arch/arm/mach-socfpga/headsmp.S
+++ b/arch/arm/mach-socfpga/headsmp.S
@@ -12,6 +12,7 @@
 #include <asm/memory.h>

 	.arch	armv7-a
+	.arm

 ENTRY(secondary_trampoline)
 	/* CPU1 will always fetch from 0x0 when it is brought out of reset.
--
2.7.4