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From 2fba570810dc44f1b4e171167882ff311417e129 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Tue, 14 May 2019 17:07:44 +0200
Subject: [PATCH 267/347] arm: imx6: cpuidle: Use raw_spinlock_t
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.246-rt110.tar.xz
[ Upstream commit 40d0332ec8312e9c090f0a5414d9c90e12b13611 ]
The idle call back is invoked with disabled interrupts and requires
raw_spinlock_t locks to work.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
---
arch/arm/mach-imx/cpuidle-imx6q.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/arch/arm/mach-imx/cpuidle-imx6q.c b/arch/arm/mach-imx/cpuidle-imx6q.c
index 326e870d7123..d9ac80aa1eb0 100644
--- a/arch/arm/mach-imx/cpuidle-imx6q.c
+++ b/arch/arm/mach-imx/cpuidle-imx6q.c
@@ -17,22 +17,22 @@
#include "hardware.h"
static int num_idle_cpus = 0;
-static DEFINE_SPINLOCK(cpuidle_lock);
+static DEFINE_RAW_SPINLOCK(cpuidle_lock);
static int imx6q_enter_wait(struct cpuidle_device *dev,
struct cpuidle_driver *drv, int index)
{
- spin_lock(&cpuidle_lock);
+ raw_spin_lock(&cpuidle_lock);
if (++num_idle_cpus == num_online_cpus())
imx6_set_lpm(WAIT_UNCLOCKED);
- spin_unlock(&cpuidle_lock);
+ raw_spin_unlock(&cpuidle_lock);
cpu_do_idle();
- spin_lock(&cpuidle_lock);
+ raw_spin_lock(&cpuidle_lock);
if (num_idle_cpus-- == num_online_cpus())
imx6_set_lpm(WAIT_CLOCKED);
- spin_unlock(&cpuidle_lock);
+ raw_spin_unlock(&cpuidle_lock);
return index;
}
--
2.36.1
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