irqchip: armada-370-xp: move IRQ handler to avoid forward declaration

If we move the IRQ handler function above the initialization function,
we avoid a forward declaration. This wasn't done as part of the
previous commit, in order to increase the readibility of the previous
commit, who was also moving the IRQ controller driver from arch/arm to
drivers/irqchip.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Tested-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

drivers/irqchip/irq-armada-370-xp.c

@@ -205,49 +205,6 @@ static struct irq_domain_ops armada_370_xp_mpic_irq_ops = {
 	.xlate = irq_domain_xlate_onecell,
 };
 
-static asmlinkage void __exception_irq_entry
-armada_370_xp_handle_irq(struct pt_regs *regs);
-
-static int __init armada_370_xp_mpic_of_init(struct device_node *node,
-					     struct device_node *parent)
-{
-	u32 control;
-
-	main_int_base = of_iomap(node, 0);
-	per_cpu_int_base = of_iomap(node, 1);
-
-	BUG_ON(!main_int_base);
-	BUG_ON(!per_cpu_int_base);
-
-	control = readl(main_int_base + ARMADA_370_XP_INT_CONTROL);
-
-	armada_370_xp_mpic_domain =
-		irq_domain_add_linear(node, (control >> 2) & 0x3ff,
-				&armada_370_xp_mpic_irq_ops, NULL);
-
-	if (!armada_370_xp_mpic_domain)
-		panic("Unable to add Armada_370_Xp MPIC irq domain (DT)\n");
-
-	irq_set_default_host(armada_370_xp_mpic_domain);
-
-#ifdef CONFIG_SMP
-	armada_xp_mpic_smp_cpu_init();
-
-	/*
-	 * Set the default affinity from all CPUs to the boot cpu.
-	 * This is required since the MPIC doesn't limit several CPUs
-	 * from acknowledging the same interrupt.
-	 */
-	cpumask_clear(irq_default_affinity);
-	cpumask_set_cpu(smp_processor_id(), irq_default_affinity);
-
-#endif
-
-	set_handle_irq(armada_370_xp_handle_irq);
-
-	return 0;
-}
-
 static asmlinkage void __exception_irq_entry
 armada_370_xp_handle_irq(struct pt_regs *regs)
 {
@@ -291,4 +248,44 @@ armada_370_xp_handle_irq(struct pt_regs *regs)
 	} while (1);
 }
 
+static int __init armada_370_xp_mpic_of_init(struct device_node *node,
+					     struct device_node *parent)
+{
+	u32 control;
+
+	main_int_base = of_iomap(node, 0);
+	per_cpu_int_base = of_iomap(node, 1);
+
+	BUG_ON(!main_int_base);
+	BUG_ON(!per_cpu_int_base);
+
+	control = readl(main_int_base + ARMADA_370_XP_INT_CONTROL);
+
+	armada_370_xp_mpic_domain =
+		irq_domain_add_linear(node, (control >> 2) & 0x3ff,
+				&armada_370_xp_mpic_irq_ops, NULL);
+
+	if (!armada_370_xp_mpic_domain)
+		panic("Unable to add Armada_370_Xp MPIC irq domain (DT)\n");
+
+	irq_set_default_host(armada_370_xp_mpic_domain);
+
+#ifdef CONFIG_SMP
+	armada_xp_mpic_smp_cpu_init();
+
+	/*
+	 * Set the default affinity from all CPUs to the boot cpu.
+	 * This is required since the MPIC doesn't limit several CPUs
+	 * from acknowledging the same interrupt.
+	 */
+	cpumask_clear(irq_default_affinity);
+	cpumask_set_cpu(smp_processor_id(), irq_default_affinity);
+
+#endif
+
+	set_handle_irq(armada_370_xp_handle_irq);
+
+	return 0;
+}
+
 IRQCHIP_DECLARE(armada_370_xp_mpic, "marvell,mpic", armada_370_xp_mpic_of_init);