[PATCH RT 08/19] arm: imx6: cpuidle: Use raw_spinlock_t

[zanussi]

From: Sebastian Andrzej Siewior <bige...@linutronix.de>

v4.14.137-rt65-rc1 stable review patch.
If anyone has any objections, please let me know.

-----------


[ 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 <bige...@linutronix.de>
Signed-off-by: Tom Zanussi <zanu...@kernel.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;
 }
-- 
2.14.1