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-rw-r--r--arch/x86/include/asm/acpi.h1
-rw-r--r--arch/x86/pci/xen.c2
2 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/include/asm/acpi.h b/arch/x86/include/asm/acpi.h
index 0ab4f9fd268..3a45668f6dc 100644
--- a/arch/x86/include/asm/acpi.h
+++ b/arch/x86/include/asm/acpi.h
@@ -50,6 +50,7 @@ void acpi_pic_sci_set_trigger(unsigned int, u16);
extern int (*__acpi_register_gsi)(struct device *dev, u32 gsi,
int trigger, int polarity);
+extern void (*__acpi_unregister_gsi)(u32 gsi);
static inline void disable_acpi(void)
{
diff --git a/arch/x86/pci/xen.c b/arch/x86/pci/xen.c
index 6e5e89c3c64..9098d880c47 100644
--- a/arch/x86/pci/xen.c
+++ b/arch/x86/pci/xen.c
@@ -458,6 +458,7 @@ int __init pci_xen_hvm_init(void)
* just how GSIs get registered.
*/
__acpi_register_gsi = acpi_register_gsi_xen_hvm;
+ __acpi_unregister_gsi = NULL;
#endif
#ifdef CONFIG_PCI_MSI
@@ -482,6 +483,7 @@ int __init pci_xen_initial_domain(void)
pci_msi_ignore_mask = 1;
#endif
__acpi_register_gsi = acpi_register_gsi_xen;
+ __acpi_unregister_gsi = NULL;
/* Pre-allocate legacy irqs */
for (irq = 0; irq < nr_legacy_irqs(); irq++) {
int trigger, polarity;