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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2012-12-21 03:36:45 +0400
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-01-03 16:09:38 +0400
commit47525cda88f5cc4dbe24de1cc05617c08e2d7c4a (patch)
treef9dd5a239d338045e49894c190bc3a540693f40d /drivers/acpi/pci_root.c
parent4002bf384cc567a843a7d16c95db54a7d77b16c6 (diff)
downloadlinux-47525cda88f5cc4dbe24de1cc05617c08e2d7c4a.tar.xz
ACPI / PCI: Fold acpi_pci_root_start() into acpi_pci_root_add()
Move the code from the ACPI PCI root bridge's .start() callback routine, acpi_pci_root_start(), directly into acpi_pci_root_add() and drop acpi_pci_root_start(). It is safe to do that, because it is now always guaranteed that when struct pci_dev objects are created, their companion struct acpi_device objects are already present, so it is not necessary to wait for them to be created before calling pci_bus_add_devices(). This change was previously proposed in a different form by Yinghai Lu. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Yinghai Lu <yinghai@kernel.org> Acked-by: Toshi Kani <toshi.kani@hp.com>
Diffstat (limited to 'drivers/acpi/pci_root.c')
-rw-r--r--drivers/acpi/pci_root.c32
1 files changed, 11 insertions, 21 deletions
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index a233fe93dfac..0e593a203ff8 100644
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -47,7 +47,6 @@ ACPI_MODULE_NAME("pci_root");
#define ACPI_PCI_ROOT_DEVICE_NAME "PCI Root Bridge"
static int acpi_pci_root_add(struct acpi_device *device);
static int acpi_pci_root_remove(struct acpi_device *device, int type);
-static int acpi_pci_root_start(struct acpi_device *device);
#define ACPI_PCIE_REQ_SUPPORT (OSC_EXT_PCI_CONFIG_SUPPORT \
| OSC_ACTIVE_STATE_PWR_SUPPORT \
@@ -67,7 +66,6 @@ static struct acpi_driver acpi_pci_root_driver = {
.ops = {
.add = acpi_pci_root_add,
.remove = acpi_pci_root_remove,
- .start = acpi_pci_root_start,
},
};
@@ -453,6 +451,7 @@ static int acpi_pci_root_add(struct acpi_device *device)
struct acpi_pci_root *root;
acpi_handle handle;
struct acpi_device *child;
+ struct acpi_pci_driver *driver;
u32 flags, base_flags;
bool is_osc_granted = false;
@@ -632,24 +631,6 @@ static int acpi_pci_root_add(struct acpi_device *device)
if (device->wakeup.flags.run_wake)
device_set_run_wake(root->bus->bridge, true);
- return 0;
-
-out_del_root:
- mutex_lock(&acpi_pci_root_lock);
- list_del(&root->node);
- mutex_unlock(&acpi_pci_root_lock);
-
- acpi_pci_irq_del_prt(root->segment, root->secondary.start);
-end:
- kfree(root);
- return result;
-}
-
-static int acpi_pci_root_start(struct acpi_device *device)
-{
- struct acpi_pci_root *root = acpi_driver_data(device);
- struct acpi_pci_driver *driver;
-
if (system_state != SYSTEM_BOOTING)
pci_assign_unassigned_bus_resources(root->bus);
@@ -664,8 +645,17 @@ static int acpi_pci_root_start(struct acpi_device *device)
pci_enable_bridges(root->bus);
pci_bus_add_devices(root->bus);
-
return 0;
+
+out_del_root:
+ mutex_lock(&acpi_pci_root_lock);
+ list_del(&root->node);
+ mutex_unlock(&acpi_pci_root_lock);
+
+ acpi_pci_irq_del_prt(root->segment, root->secondary.start);
+end:
+ kfree(root);
+ return result;
}
static int acpi_pci_root_remove(struct acpi_device *device, int type)