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Diffstat (limited to 'drivers/acpi/pci_root.c')
| -rw-r--r-- | drivers/acpi/pci_root.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c index b07eda1e7b05..bf601d4df8cf 100644 --- a/drivers/acpi/pci_root.c +++ b/drivers/acpi/pci_root.c @@ -614,6 +614,16 @@ static int acpi_pci_root_add(struct acpi_device *device, if (hotadd) { pcibios_resource_survey_bus(root->bus); pci_assign_unassigned_root_bus_resources(root->bus); + /* + * This is only called for the hotadd case. For the boot-time + * case, we need to wait until after PCI initialization in + * order to deal with IOAPICs mapped in on a PCI BAR. + * + * This is currently x86-specific, because acpi_ioapic_add() + * is an empty function without CONFIG_ACPI_HOTPLUG_IOAPIC. + * And CONFIG_ACPI_HOTPLUG_IOAPIC depends on CONFIG_X86_IO_APIC + * (see drivers/acpi/Kconfig). + */ acpi_ioapic_add(root->device->handle); } |