x86: ioapic: Use setup function in __io_apic_set_pci_routing()

The only difference here is that we did not call
__add_pin_to_irq_node() for the legacy irqs, but that's not worth 30
lines of extra code.

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

1 files changed, 3 insertions, 31 deletions

diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index 51c8bd11c136..a655bd8fb063 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -3679,45 +3679,17 @@ int __init arch_probe_nr_irqs(void)
 static int __io_apic_set_pci_routing(struct device *dev, int irq,
                                 struct io_apic_irq_attr *irq_attr)
 {
-        struct irq_cfg *cfg;
         int node;
-        int ioapic, pin;
-        int trigger, polarity;
 
-        ioapic = irq_attr->ioapic;
         if (!IO_APIC_IRQ(irq)) {
                 apic_printk(APIC_QUIET,KERN_ERR "IOAPIC[%d]: Invalid reference to IRQ 0\n",
-                        ioapic);
+                            irq_attr->ioapic);
                 return -EINVAL;
         }
 
-        if (dev)
-                node = dev_to_node(dev);
-        else
-                node = cpu_to_node(0);
-
-        cfg = alloc_irq_and_cfg_at(irq, node);
-        if (!cfg)
-                return 0;
-
-        pin = irq_attr->ioapic_pin;
-        trigger = irq_attr->trigger;
-        polarity = irq_attr->polarity;
-
-        /*
-         * IRQs < 16 are already in the irq_2_pin[] map
-         */
-        if (irq >= legacy_pic->nr_legacy_irqs) {
-                if (__add_pin_to_irq_node(cfg, node, ioapic, pin)) {
-                        printk(KERN_INFO "can not add pin %d for irq %d\n",
-                                pin, irq);
-                        return 0;
-                }
-        }
-
-        setup_ioapic_irq(ioapic, pin, irq, cfg, trigger, polarity);
+        node = dev ? dev_to_node(dev) : cpu_to_node(0);
 
-        return 0;
+        return io_apic_setup_irq_pin(irq, node, irq_attr);
 }
 
 int io_apic_set_pci_routing(struct device *dev, int irq,