Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...

[mirror_ubuntu-artful-kernel.git] / drivers / irqchip / irq-bcm2836.c

diff --git a/drivers/irqchip/irq-bcm2836.c b/drivers/irqchip/irq-bcm2836.c
index df1949c0aa23ad927a58f898f0739dc9e35ca46d..d96b2c947e74e3edab3917551c64fbd1ced0f34c 100644 (file)
--- a/drivers/irqchip/irq-bcm2836.c
+++ b/drivers/irqchip/irq-bcm2836.c
@@ -202,26 +202,19 @@ static void bcm2836_arm_irqchip_send_ipi(const struct cpumask *mask,
        }
 }
 
-/* Unmasks the IPI on the CPU when it's online. */
-static int bcm2836_arm_irqchip_cpu_notify(struct notifier_block *nfb,
-                                         unsigned long action, void *hcpu)
+static int bcm2836_cpu_starting(unsigned int cpu)
 {
-       unsigned int cpu = (unsigned long)hcpu;
-       unsigned int int_reg = LOCAL_MAILBOX_INT_CONTROL0;
-       unsigned int mailbox = 0;
-
-       if (action == CPU_STARTING || action == CPU_STARTING_FROZEN)
-               bcm2836_arm_irqchip_unmask_per_cpu_irq(int_reg, mailbox, cpu);
-       else if (action == CPU_DYING)
-               bcm2836_arm_irqchip_mask_per_cpu_irq(int_reg, mailbox, cpu);
-
-       return NOTIFY_OK;
+       bcm2836_arm_irqchip_unmask_per_cpu_irq(LOCAL_MAILBOX_INT_CONTROL0, 0,
+                                              cpu);
+       return 0;
 }
 
-static struct notifier_block bcm2836_arm_irqchip_cpu_notifier = {
-       .notifier_call = bcm2836_arm_irqchip_cpu_notify,
-       .priority = 100,
-};
+static int bcm2836_cpu_dying(unsigned int cpu)
+{
+       bcm2836_arm_irqchip_mask_per_cpu_irq(LOCAL_MAILBOX_INT_CONTROL0, 0,
+                                            cpu);
+       return 0;
+}
 
 #ifdef CONFIG_ARM
 static int __init bcm2836_smp_boot_secondary(unsigned int cpu,
@@ -251,10 +244,9 @@ bcm2836_arm_irqchip_smp_init(void)
 {
 #ifdef CONFIG_SMP
        /* Unmask IPIs to the boot CPU. */
-       bcm2836_arm_irqchip_cpu_notify(&bcm2836_arm_irqchip_cpu_notifier,
-                                      CPU_STARTING,
-                                      (void *)(uintptr_t)smp_processor_id());
-       register_cpu_notifier(&bcm2836_arm_irqchip_cpu_notifier);
+       cpuhp_setup_state(CPUHP_AP_IRQ_BCM2836_STARTING,
+                         "AP_IRQ_BCM2836_STARTING", bcm2836_cpu_starting,
+                         bcm2836_cpu_dying);
 
        set_smp_cross_call(bcm2836_arm_irqchip_send_ipi);