2 files changed, 17 insertions, 0 deletions

diff --git a/arch/x86/include/asm/io_apic.h b/arch/x86/include/asm/io_apic.h
index 56dcf08bde62..37dbb3fae395 100644
--- a/arch/x86/include/asm/io_apic.h
+++ b/arch/x86/include/asm/io_apic.h
@@ -151,6 +151,8 @@ void setup_IO_APIC_irq_extra(u32 gsi);
 extern void ioapic_and_gsi_init(void);
 extern void ioapic_insert_resources(void);
 
+int io_apic_setup_irq_pin(unsigned int irq, int node, struct io_apic_irq_attr *attr);
+
 extern struct IO_APIC_route_entry **alloc_ioapic_entries(void);
 extern void free_ioapic_entries(struct IO_APIC_route_entry **ioapic_entries);
 extern int save_IO_APIC_setup(struct IO_APIC_route_entry **ioapic_entries);
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index f751a82d4cb4..6deb3ca62fd6 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -3607,6 +3607,21 @@ int arch_setup_ht_irq(unsigned int irq, struct pci_dev *dev)
 }
 #endif /* CONFIG_HT_IRQ */
 
+int
+io_apic_setup_irq_pin(unsigned int irq, int node, struct io_apic_irq_attr *attr)
+{
+        struct irq_cfg *cfg = alloc_irq_and_cfg_at(irq, node);
+        int ret;
+
+        if (!cfg)
+                return -EINVAL;
+        ret = __add_pin_to_irq_node(cfg, node, attr->ioapic, attr->ioapic_pin);
+        if (!ret)
+                setup_ioapic_irq(attr->ioapic, attr->ioapic_pin, irq, cfg,
+                                 attr->trigger, attr->polarity);
+        return ret;
+}
+
 int __init io_apic_get_redir_entries (int ioapic)
 {
         union IO_APIC_reg_01    reg_01;