From e89900c9ad75a1b80e1f1f46ce9c9bb0e7ea1d96 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 27 Oct 2014 13:21:47 +0800 Subject: x86, irq: Introduce helper to check whether an IOAPIC has been registered Introduce acpi_ioapic_registered() to check whether an IOAPIC has already been registered, it will be used when enabling IOAPIC hotplug. Signed-off-by: Jiang Liu Acked-by: Pavel Machek Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Greg Kroah-Hartman Cc: Benjamin Herrenschmidt Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Cc: Borislav Petkov Cc: Len Brown Cc: Grant Likely Cc: Prarit Bhargava Link: http://lkml.kernel.org/r/1414387308-27148-18-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- include/linux/acpi.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 407a12f663eb..a81dd437a53c 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -148,6 +148,7 @@ int acpi_unmap_lsapic(int cpu); int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base); int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base); +int acpi_ioapic_registered(acpi_handle handle, u32 gsi_base); void acpi_irq_stats_init(void); extern u32 acpi_irq_handled; extern u32 acpi_irq_not_handled; -- cgit v1.2.3