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ACPI / PCI: Make bus registration and unregistration symmetric

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Since acpi_pci_slot_enumerate() and acpiphp_enumerate_slots() can get
the ACPI device handle they need from bus->bridge, it is not
necessary to pass that handle to them as an argument.

Drop the second argument of acpi_pci_slot_enumerate() and
acpiphp_enumerate_slots(), rework them to obtain the ACPI handle
from bus->bridge and make acpi_pci_add_bus() and
acpi_pci_remove_bus() entirely symmetrical.

Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
This commit is contained in:
Rafael J. Wysocki 2013-07-13 23:27:23 +02:00
parent b9eb179fe6
commit be1c9de98d
4 changed files with 21 additions and 25 deletions
Download patch file Download diff file Expand all files Collapse all files

16
drivers/pci/pci-acpi.c
View file

@ -290,24 +290,16 @@ static struct pci_platform_pm_ops acpi_pci_platform_pm = {
void acpi_pci_add_bus(struct pci_bus *bus)
{
acpi_handle handle = NULL;
if (bus->bridge)
handle = ACPI_HANDLE(bus->bridge);
if (acpi_pci_disabled || handle == NULL)
if (acpi_pci_disabled || !bus->bridge)
return;
acpi_pci_slot_enumerate(bus, handle);
acpiphp_enumerate_slots(bus, handle);
acpi_pci_slot_enumerate(bus);
acpiphp_enumerate_slots(bus);
}
void acpi_pci_remove_bus(struct pci_bus *bus)
{
/*
* bus->bridge->acpi_node.handle has already been reset to NULL
* when acpi_pci_remove_bus() is called, so don't check ACPI handle.
*/
if (acpi_pci_disabled)
if (acpi_pci_disabled || !bus->bridge)
return;
acpiphp_remove_slots(bus);