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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-07-13 23:27:23 +0200
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-07-23 03:58:42 +0200
commitbe1c9de98d8904c75a5ab8b2a0d97bea0f7c07cc (patch)
tree43c1f3632a3b8be20cae5db77bdcd2f0852acdd7 /drivers/pci/pci-acpi.c
parentMerge branch 'acpi-cleanup' (diff)
downloadlinux-be1c9de98d8904c75a5ab8b2a0d97bea0f7c07cc.tar.xz
linux-be1c9de98d8904c75a5ab8b2a0d97bea0f7c07cc.zip
ACPI / PCI: Make bus registration and unregistration symmetric
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>
Diffstat (limited to 'drivers/pci/pci-acpi.c')
-rw-r--r--drivers/pci/pci-acpi.c16
1 files changed, 4 insertions, 12 deletions
diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c
index dbdc5f7e2b29..c78cc432edab 100644
--- a/drivers/pci/pci-acpi.c
+++ b/drivers/pci/pci-acpi.c
@@ -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);