[RT,04/16] arm: imx6: cpuidle: Use raw_spinlock_t
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Message ID 20190719214956.623149328@goodmis.org
State New
Headers show
Series
  • Linux 4.19.59-rt24-rc1
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Commit Message

Steven Rostedt July 19, 2019, 9:49 p.m. UTC
4.19.59-rt24-rc1 stable review patch.
If anyone has any objections, please let me know.

------------------

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

[ 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(-)

Patch
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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;
 }