56 lines
1.9 KiB
Diff
56 lines
1.9 KiB
Diff
From 93809b10fcffc172653eb85776b6b7033609f2b6 Mon Sep 17 00:00:00 2001
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Message-Id: <93809b10fcffc172653eb85776b6b7033609f2b6.1601675153.git.zanussi@kernel.org>
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In-Reply-To: <5b5a156f9808b1acf1205606e03da117214549ea.1601675151.git.zanussi@kernel.org>
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References: <5b5a156f9808b1acf1205606e03da117214549ea.1601675151.git.zanussi@kernel.org>
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From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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Date: Tue, 14 May 2019 17:07:44 +0200
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Subject: [PATCH 267/333] arm: imx6: cpuidle: Use raw_spinlock_t
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.148-rt64.tar.xz
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[ Upstream commit 40d0332ec8312e9c090f0a5414d9c90e12b13611 ]
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The idle call back is invoked with disabled interrupts and requires
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raw_spinlock_t locks to work.
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Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
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---
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arch/arm/mach-imx/cpuidle-imx6q.c | 10 +++++-----
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1 file changed, 5 insertions(+), 5 deletions(-)
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diff --git a/arch/arm/mach-imx/cpuidle-imx6q.c b/arch/arm/mach-imx/cpuidle-imx6q.c
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index 326e870d7123..d9ac80aa1eb0 100644
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--- a/arch/arm/mach-imx/cpuidle-imx6q.c
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+++ b/arch/arm/mach-imx/cpuidle-imx6q.c
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@@ -17,22 +17,22 @@
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#include "hardware.h"
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static int num_idle_cpus = 0;
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-static DEFINE_SPINLOCK(cpuidle_lock);
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+static DEFINE_RAW_SPINLOCK(cpuidle_lock);
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static int imx6q_enter_wait(struct cpuidle_device *dev,
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struct cpuidle_driver *drv, int index)
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{
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- spin_lock(&cpuidle_lock);
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+ raw_spin_lock(&cpuidle_lock);
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if (++num_idle_cpus == num_online_cpus())
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imx6_set_lpm(WAIT_UNCLOCKED);
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- spin_unlock(&cpuidle_lock);
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+ raw_spin_unlock(&cpuidle_lock);
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cpu_do_idle();
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- spin_lock(&cpuidle_lock);
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+ raw_spin_lock(&cpuidle_lock);
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if (num_idle_cpus-- == num_online_cpus())
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imx6_set_lpm(WAIT_CLOCKED);
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- spin_unlock(&cpuidle_lock);
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+ raw_spin_unlock(&cpuidle_lock);
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return index;
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}
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--
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2.17.1
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