x86/apb/timer: Use proper mask to modify hotplug action

Magic hex constants are a guarantee for wreckage when the defines change.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/arch/x86/kernel/apb_timer.c b/arch/x86/kernel/apb_timer.c
index 222a570..cefacba 100644 (file)
--- a/arch/x86/kernel/apb_timer.c
+++ b/arch/x86/kernel/apb_timer.c
@@ -221,7 +221,7 @@ static int apbt_cpuhp_notify(struct notifier_block *n,
        unsigned long cpu = (unsigned long)hcpu;
        struct apbt_dev *adev = &per_cpu(cpu_apbt_dev, cpu);
 
-       switch (action & 0xf) {
+       switch (action & ~CPU_TASKS_FROZEN) {
        case CPU_DEAD:
                dw_apb_clockevent_pause(adev->timer);
                if (system_state == SYSTEM_RUNNING) {