Merge tag 'for-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/kishon/linux...

[deliverable/linux.git] / drivers / irqchip / irq-armada-370-xp.c

diff --git a/drivers/irqchip/irq-armada-370-xp.c b/drivers/irqchip/irq-armada-370-xp.c
index 463c235acbdcdc1758329205e3c79e380b5fa7a6..4387dae14e453a949bb297ec1a74a59e400a3089 100644 (file)
--- a/drivers/irqchip/irq-armada-370-xp.c
+++ b/drivers/irqchip/irq-armada-370-xp.c
@@ -69,6 +69,7 @@ static void __iomem *per_cpu_int_base;
 static void __iomem *main_int_base;
 static struct irq_domain *armada_370_xp_mpic_domain;
 static u32 doorbell_mask_reg;
+static int parent_irq;
 #ifdef CONFIG_PCI_MSI
 static struct irq_domain *armada_370_xp_msi_domain;
 static DECLARE_BITMAP(msi_used, PCI_MSI_DOORBELL_NR);
@@ -356,6 +357,7 @@ static int armada_xp_mpic_secondary_init(struct notifier_block *nfb,
 {
        if (action == CPU_STARTING || action == CPU_STARTING_FROZEN)
                armada_xp_mpic_smp_cpu_init();
+
        return NOTIFY_OK;
 }
 
@@ -364,6 +366,20 @@ static struct notifier_block armada_370_xp_mpic_cpu_notifier = {
        .priority = 100,
 };
 
+static int mpic_cascaded_secondary_init(struct notifier_block *nfb,
+                                       unsigned long action, void *hcpu)
+{
+       if (action == CPU_STARTING || action == CPU_STARTING_FROZEN)
+               enable_percpu_irq(parent_irq, IRQ_TYPE_NONE);
+
+       return NOTIFY_OK;
+}
+
+static struct notifier_block mpic_cascaded_cpu_notifier = {
+       .notifier_call = mpic_cascaded_secondary_init,
+       .priority = 100,
+};
+
 #endif /* CONFIG_SMP */
 
 static struct irq_domain_ops armada_370_xp_mpic_irq_ops = {
@@ -539,7 +555,7 @@ static int __init armada_370_xp_mpic_of_init(struct device_node *node,
                                             struct device_node *parent)
 {
        struct resource main_int_res, per_cpu_int_res;
-       int parent_irq, nr_irqs, i;
+       int nr_irqs, i;
        u32 control;
 
        BUG_ON(of_address_to_resource(node, 0, &main_int_res));
@@ -587,6 +603,9 @@ static int __init armada_370_xp_mpic_of_init(struct device_node *node,
                register_cpu_notifier(&armada_370_xp_mpic_cpu_notifier);
 #endif
        } else {
+#ifdef CONFIG_SMP
+               register_cpu_notifier(&mpic_cascaded_cpu_notifier);
+#endif
                irq_set_chained_handler(parent_irq,
                                        armada_370_xp_mpic_handle_cascade_irq);
        }