linux-kernel - [PATCH] arm/bL_switcher: Use global define for masking hotplug transition switch action argument

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Date:	Fri, 11 Mar 2016 10:19:55 +0100
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>,
	Russell King <linux@....linux.org.uk>,
	linux-arm-kernel@...ts.infradead.org
Subject: [PATCH] arm/bL_switcher: Use global define for masking hotplug transition switch action argument

The action argument of the hotplug transition switch case is masked
with '0xf' to map CPU_XXX_FROZEN hotplug transition on corresponding
non frozen hotplug transitions. There is a global define
CPU_TASKS_FROZEN used as mask for frozen hotplug transitions.

Use '~CPU_TASKS_FROZEN' instead of '0xf'.

Cc: Russell King <linux@....linux.org.uk>
Cc: linux-arm-kernel@...ts.infradead.org
Signed-off-by: Anna-Maria Gleixner <anna-maria@...utronix.de>
---
 arch/arm/common/bL_switcher.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/arm/common/bL_switcher.c
+++ b/arch/arm/common/bL_switcher.c
@@ -762,7 +762,7 @@ static int bL_switcher_hotplug_callback(
 {
 	if (bL_switcher_active) {
 		int pairing = bL_switcher_cpu_pairing[(unsigned long)hcpu];
-		switch (action & 0xf) {
+		switch (action & ~CPU_TASKS_FROZEN) {
 		case CPU_UP_PREPARE:
 		case CPU_DOWN_PREPARE:
 			if (pairing == -1)