From mboxrd@z Thu Jan  1 00:00:00 1970
From: Sebastian Capella <sebastian.capella@linaro.org>
Subject: [PATCH v8 1/2] ARM: avoid tracers in soft_restart
Date: Tue, 11 Mar 2014 11:40:13 -0700
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Cc: Sebastian Capella <sebastian.capella@linaro.org>, Russell King <linux@arm.linux.org.uk>, Andrew Morton <akpm@linux-foundation.org>, Thomas Gleixner <tglx@linutronix.de>, Will Deacon <will.deacon@arm.com>, Robin Holt <robin.m.holt@gmail.com>, Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>, Konstantin Khlebnikov <k.khlebnikov@samsung.com>, Steven Capper <steve.capper@linaro.org>, Stephen Warren <swarren@nvidia.com>, Tejun Heo <tj@kernel.org>

Use of tracers in local_irq_disable is causes recursive aborts when
called with irqs disabled and using a temporary stack (hibernation).
Replace local_irq_disable with raw_local_irq_disable instead to
avoid tracers.

Signed-off-by: Sebastian Capella <sebastian.capella@linaro.org>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Robin Holt <robin.m.holt@gmail.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Konstantin Khlebnikov <k.khlebnikov@samsung.com>
Cc: Steven Capper <steve.capper@linaro.org>
Cc: Stephen Warren <swarren@nvidia.com>
Cc: Tejun Heo <tj@kernel.org>
---
 arch/arm/kernel/process.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index 92f7b15..f58b723 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -100,7 +100,7 @@ void soft_restart(unsigned long addr)
 	u64 *stack = soft_restart_stack + ARRAY_SIZE(soft_restart_stack);
 
 	/* Disable interrupts first */
-	local_irq_disable();
+	raw_local_irq_disable();
 	local_fiq_disable();
 
 	/* Disable the L2 if we're the last man standing. */
-- 
1.7.9.5