linux-kernel - [PATCH] sh: smp: Add missing FROZEN hotplug notifier transitions

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Message-Id: <1464095975-56587-1-git-send-email-anna-maria@linutronix.de>
Date:	Tue, 24 May 2016 15:19:35 +0200
From:	Anna-Maria Gleixner <anna-maria@...utronix.de>
To:	linux-kernel@...r.kernel.org
Cc:	rt@...utronix.de, Anna-Maria Gleixner <anna-maria@...utronix.de>,
	Yoshinori Sato <ysato@...rs.sourceforge.jp>,
	Rich Felker <dalias@...c.org>, linux-sh@...r.kernel.org
Subject: [PATCH] sh: smp: Add missing FROZEN hotplug notifier transitions

The corresponding FROZEN hotplug notifier transitions used on
suspend/resume are ignored. Therefore the switch case action argument
is masked with the frozen hotplug notifier transition mask.

Cc: Yoshinori Sato <ysato@...rs.sourceforge.jp>
Cc: Rich Felker <dalias@...c.org>
Cc: linux-sh@...r.kernel.org
Signed-off-by: Anna-Maria Gleixner <anna-maria@...utronix.de>
---
 arch/sh/kernel/cpu/sh4a/smp-shx3.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/sh/kernel/cpu/sh4a/smp-shx3.c
+++ b/arch/sh/kernel/cpu/sh4a/smp-shx3.c
@@ -127,7 +127,7 @@ shx3_cpu_callback(struct notifier_block
 {
 	unsigned int cpu = (unsigned int)hcpu;
 
-	switch (action) {
+	switch (action & ~CPU_TASKS_FROZEN) {
 	case CPU_UP_PREPARE:
 		shx3_update_boot_vector(cpu);
 		break;