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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2012-12-21 00:36:46 +0100
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-01-03 13:09:39 +0100
commit02f57c67a8677ae55dcdd256a2a7abaf41e4cc1f (patch)
treede2b6f73409a459119641fd8359694f0367f8f50 /drivers
parent47525cda88f5cc4dbe24de1cc05617c08e2d7c4a (diff)
downloadop-kernel-dev-02f57c67a8677ae55dcdd256a2a7abaf41e4cc1f.zip
op-kernel-dev-02f57c67a8677ae55dcdd256a2a7abaf41e4cc1f.tar.gz
ACPI: Remove acpi_start_single_object() and acpi_bus_start()
The ACPI PCI root bridge driver was the only ACPI driver implementing the .start() callback, which isn't used by any ACPI drivers any more now. For this reason, acpi_start_single_object() has no purpose any more, so remove it and all references to it. Also remove acpi_bus_start_device(), whose only purpose was to call acpi_start_single_object(). Moreover, since after the removal of acpi_bus_start_device() the only purpose of acpi_bus_start() remains to call acpi_update_all_gpes(), move that into acpi_bus_add() and drop acpi_bus_start() too, remove its header from acpi_bus.h and update all of its former users accordingly. This change was previously proposed in a different from 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')
-rw-r--r--drivers/acpi/container.c16
-rw-r--r--drivers/acpi/scan.c66
-rw-r--r--drivers/pci/hotplug/acpiphp_glue.c4
-rw-r--r--drivers/pci/hotplug/sgi_hotplug.c2
4 files changed, 12 insertions, 76 deletions
diff --git a/drivers/acpi/container.c b/drivers/acpi/container.c
index 811910b..98b85e3 100644
--- a/drivers/acpi/container.c
+++ b/drivers/acpi/container.c
@@ -139,24 +139,14 @@ static int container_device_add(struct acpi_device **device, acpi_handle handle)
{
acpi_handle phandle;
struct acpi_device *pdev;
- int result;
-
-
- if (acpi_get_parent(handle, &phandle)) {
- return -ENODEV;
- }
- if (acpi_bus_get_device(phandle, &pdev)) {
+ if (acpi_get_parent(handle, &phandle))
return -ENODEV;
- }
- if (acpi_bus_add(device, pdev, handle, ACPI_BUS_TYPE_DEVICE)) {
+ if (acpi_bus_get_device(phandle, &pdev))
return -ENODEV;
- }
-
- result = acpi_bus_start(*device);
- return result;
+ return acpi_bus_add(device, pdev, handle, ACPI_BUS_TYPE_DEVICE);
}
static void container_notify_cb(acpi_handle handle, u32 type, void *context)
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index eb7ecb1..6321cab 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -571,7 +571,6 @@ static void acpi_device_remove_notify_handler(struct acpi_device *device)
}
static int acpi_bus_driver_init(struct acpi_device *, struct acpi_driver *);
-static int acpi_start_single_object(struct acpi_device *);
static int acpi_device_probe(struct device * dev)
{
struct acpi_device *acpi_dev = to_acpi_device(dev);
@@ -580,9 +579,6 @@ static int acpi_device_probe(struct device * dev)
ret = acpi_bus_driver_init(acpi_dev, acpi_drv);
if (!ret) {
- if (acpi_dev->add_type == ACPI_BUS_ADD_START)
- acpi_start_single_object(acpi_dev);
-
if (acpi_drv->ops.notify) {
ret = acpi_device_install_notify_handler(acpi_dev);
if (ret) {
@@ -761,24 +757,6 @@ acpi_bus_driver_init(struct acpi_device *device, struct acpi_driver *driver)
return 0;
}
-static int acpi_start_single_object(struct acpi_device *device)
-{
- int result = 0;
- struct acpi_driver *driver;
-
-
- if (!(driver = device->driver))
- return 0;
-
- if (driver->ops.start) {
- result = driver->ops.start(device);
- if (result && driver->ops.remove)
- driver->ops.remove(device, ACPI_BUS_REMOVAL_NORMAL);
- }
-
- return result;
-}
-
/**
* acpi_bus_register_driver - register a driver with the ACPI bus
* @driver: driver being registered
@@ -1673,59 +1651,31 @@ static int acpi_bus_scan(acpi_handle handle, bool start,
}
/*
- * acpi_bus_add and acpi_bus_start
+ * acpi_bus_add
*
* scan a given ACPI tree and (probably recently hot-plugged)
- * create and add or starts found devices.
+ * create and add found devices.
*
* If no devices were found -ENODEV is returned which does not
* mean that this is a real error, there just have been no suitable
* ACPI objects in the table trunk from which the kernel could create
- * a device and add/start an appropriate driver.
+ * a device and add an appropriate driver.
*/
int
acpi_bus_add(struct acpi_device **child,
struct acpi_device *parent, acpi_handle handle, int type)
{
- return acpi_bus_scan(handle, false, child);
-}
-EXPORT_SYMBOL(acpi_bus_add);
-
-static acpi_status acpi_bus_start_device(acpi_handle handle, u32 lvl,
- void *not_used, void **ret_not_used)
-{
- struct acpi_device *device;
- unsigned long long sta_not_used;
- int type_not_used;
-
- /*
- * Ignore errors ignored by acpi_bus_check_add() to avoid terminating
- * namespace walks prematurely.
- */
- if (acpi_bus_type_and_status(handle, &type_not_used, &sta_not_used))
- return AE_OK;
-
- if (acpi_bus_get_device(handle, &device))
- return AE_CTRL_DEPTH;
-
- return acpi_start_single_object(device);
-}
-
-int acpi_bus_start(struct acpi_device *device)
-{
- if (!device)
- return -EINVAL;
+ int err;
- if (ACPI_SUCCESS(acpi_start_single_object(device)))
- acpi_walk_namespace(ACPI_TYPE_ANY, device->handle,
- ACPI_UINT32_MAX, acpi_bus_start_device,
- NULL, NULL, NULL);
+ err = acpi_bus_scan(handle, false, child);
+ if (err)
+ return err;
acpi_update_all_gpes();
return 0;
}
-EXPORT_SYMBOL(acpi_bus_start);
+EXPORT_SYMBOL(acpi_bus_add);
int acpi_bus_trim(struct acpi_device *start, int rmdevice)
{
diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
index 3d6d4fd..7e2bad4 100644
--- a/drivers/pci/hotplug/acpiphp_glue.c
+++ b/drivers/pci/hotplug/acpiphp_glue.c
@@ -759,7 +759,6 @@ static int acpiphp_bus_add(struct acpiphp_func *func)
-ret_val);
goto acpiphp_bus_add_out;
}
- ret_val = acpi_bus_start(device);
acpiphp_bus_add_out:
return ret_val;
@@ -1148,8 +1147,7 @@ static void handle_bridge_insertion(acpi_handle handle, u32 type)
err("cannot add bridge to acpi list\n");
return;
}
- if (!acpiphp_configure_bridge(handle) &&
- !acpi_bus_start(device))
+ if (!acpiphp_configure_bridge(handle))
add_bridge(handle);
else
err("cannot configure and start bridge\n");
diff --git a/drivers/pci/hotplug/sgi_hotplug.c b/drivers/pci/hotplug/sgi_hotplug.c
index f64ca92..20c960d 100644
--- a/drivers/pci/hotplug/sgi_hotplug.c
+++ b/drivers/pci/hotplug/sgi_hotplug.c
@@ -457,8 +457,6 @@ static int enable_slot(struct hotplug_slot *bss_hotplug_slot)
ret, (int)(adr>>16),
(int)(adr&0xffff));
/* try to continue on */
- } else {
- acpi_bus_start(device);
}
}
}
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