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path: root/drivers/acpi/scan.c
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Diffstat (limited to 'drivers/acpi/scan.c')
-rw-r--r--drivers/acpi/scan.c120
1 files changed, 48 insertions, 72 deletions
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index f6f52c1a2ab..39b7233c348 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -109,20 +109,19 @@ static int acpi_bus_hot_remove_device(void *context)
return 0;
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Hot-removing device %s...\n", device->dev.bus_id));
-
+ "Hot-removing device %s...\n", dev_name(&device->dev)));
if (acpi_bus_trim(device, 1)) {
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
- "Removing device failed\n"));
+ printk(KERN_ERR PREFIX
+ "Removing device failed\n");
return -1;
}
/* power off device */
status = acpi_evaluate_object(handle, "_PS3", NULL, NULL);
if (ACPI_FAILURE(status) && status != AE_NOT_FOUND)
- ACPI_DEBUG_PRINT((ACPI_DB_WARN,
- "Power-off device failed\n"));
+ printk(KERN_WARNING PREFIX
+ "Power-off device failed\n");
if (device->flags.lockable) {
arg_list.count = 1;
@@ -276,6 +275,13 @@ int acpi_match_device_ids(struct acpi_device *device,
{
const struct acpi_device_id *id;
+ /*
+ * If the device is not present, it is unnecessary to load device
+ * driver for it.
+ */
+ if (!device->status.present)
+ return -ENODEV;
+
if (device->flags.hardware_id) {
for (id = ids; id->id[0]; id++) {
if (!strcmp((char*)id->id, device->pnp.hardware_id))
@@ -384,7 +390,7 @@ static int acpi_device_remove(struct device * dev)
acpi_drv->ops.remove(acpi_dev, acpi_dev->removal_type);
}
acpi_dev->driver = NULL;
- acpi_driver_data(dev) = NULL;
+ acpi_dev->driver_data = NULL;
put_device(dev);
return 0;
@@ -453,7 +459,7 @@ static int acpi_device_register(struct acpi_device *device,
acpi_device_bus_id->instance_no = 0;
list_add_tail(&acpi_device_bus_id->node, &acpi_bus_id_list);
}
- sprintf(device->dev.bus_id, "%s:%02x", acpi_device_bus_id->bus_id, acpi_device_bus_id->instance_no);
+ dev_set_name(&device->dev, "%s:%02x", acpi_device_bus_id->bus_id, acpi_device_bus_id->instance_no);
if (device->parent) {
list_add_tail(&device->node, &device->parent->children);
@@ -477,7 +483,8 @@ static int acpi_device_register(struct acpi_device *device,
result = acpi_device_setup_files(device);
if(result)
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Error creating sysfs interface for device %s\n", device->dev.bus_id));
+ printk(KERN_ERR PREFIX "Error creating sysfs interface for device %s\n",
+ dev_name(&device->dev));
device->removal_type = ACPI_BUS_REMOVAL_NORMAL;
return 0;
@@ -537,7 +544,7 @@ acpi_bus_driver_init(struct acpi_device *device, struct acpi_driver *driver)
result = driver->ops.add(device);
if (result) {
device->driver = NULL;
- acpi_driver_data(device) = NULL;
+ device->driver_data = NULL;
return result;
}
@@ -807,6 +814,7 @@ static int acpi_bus_get_power_flags(struct acpi_device *device)
/* TBD: System wake support and resource requirements. */
device->power.state = ACPI_STATE_UNKNOWN;
+ acpi_bus_get_power(device->handle, &(device->power.state));
return 0;
}
@@ -901,36 +909,6 @@ static void acpi_device_get_busid(struct acpi_device *device,
}
}
-static int
-acpi_video_bus_match(struct acpi_device *device)
-{
- acpi_handle h_dummy;
-
- if (!device)
- return -EINVAL;
-
- /* Since there is no HID, CID for ACPI Video drivers, we have
- * to check well known required nodes for each feature we support.
- */
-
- /* Does this device able to support video switching ? */
- if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOD", &h_dummy)) &&
- ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOS", &h_dummy)))
- return 0;
-
- /* Does this device able to retrieve a video ROM ? */
- if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_ROM", &h_dummy)))
- return 0;
-
- /* Does this device able to configure which video head to be POSTed ? */
- if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_VPO", &h_dummy)) &&
- ACPI_SUCCESS(acpi_get_handle(device->handle, "_GPD", &h_dummy)) &&
- ACPI_SUCCESS(acpi_get_handle(device->handle, "_SPD", &h_dummy)))
- return 0;
-
- return -ENODEV;
-}
-
/*
* acpi_bay_match - see if a device is an ejectable driver bay
*
@@ -1013,7 +991,7 @@ static void acpi_device_set_id(struct acpi_device *device,
will get autoloaded and the device might still match
against another driver.
*/
- if (ACPI_SUCCESS(acpi_video_bus_match(device)))
+ if (acpi_is_video_device(device))
cid_add = ACPI_VIDEO_HID;
else if (ACPI_SUCCESS(acpi_bay_match(device)))
cid_add = ACPI_BAY_HID;
@@ -1025,7 +1003,7 @@ static void acpi_device_set_id(struct acpi_device *device,
hid = ACPI_POWER_HID;
break;
case ACPI_BUS_TYPE_PROCESSOR:
- hid = ACPI_PROCESSOR_HID;
+ hid = ACPI_PROCESSOR_OBJECT_HID;
break;
case ACPI_BUS_TYPE_SYSTEM:
hid = ACPI_SYSTEM_HID;
@@ -1153,20 +1131,6 @@ static int acpi_bus_remove(struct acpi_device *dev, int rmdevice)
}
static int
-acpi_is_child_device(struct acpi_device *device,
- int (*matcher)(struct acpi_device *))
-{
- int result = -ENODEV;
-
- do {
- if (ACPI_SUCCESS(matcher(device)))
- return AE_OK;
- } while ((device = device->parent));
-
- return result;
-}
-
-static int
acpi_add_single_object(struct acpi_device **child,
struct acpi_device *parent, acpi_handle handle, int type,
struct acpi_bus_ops *ops)
@@ -1221,15 +1185,18 @@ acpi_add_single_object(struct acpi_device **child,
result = -ENODEV;
goto end;
}
- if (!device->status.present) {
- /* Bay and dock should be handled even if absent */
- if (!ACPI_SUCCESS(
- acpi_is_child_device(device, acpi_bay_match)) &&
- !ACPI_SUCCESS(
- acpi_is_child_device(device, acpi_dock_match))) {
- result = -ENODEV;
- goto end;
- }
+ /*
+ * When the device is neither present nor functional, the
+ * device should not be added to Linux ACPI device tree.
+ * When the status of the device is not present but functinal,
+ * it should be added to Linux ACPI tree. For example : bay
+ * device , dock device.
+ * In such conditions it is unncessary to check whether it is
+ * bay device or dock device.
+ */
+ if (!device->status.present && !device->status.functional) {
+ result = -ENODEV;
+ goto end;
}
break;
default:
@@ -1252,6 +1219,16 @@ acpi_add_single_object(struct acpi_device **child,
acpi_device_set_id(device, parent, handle, type);
/*
+ * The ACPI device is attached to acpi handle before getting
+ * the power/wakeup/peformance flags. Otherwise OS can't get
+ * the corresponding ACPI device by the acpi handle in the course
+ * of getting the power/wakeup/performance flags.
+ */
+ result = acpi_device_set_context(device, type);
+ if (result)
+ goto end;
+
+ /*
* Power Management
* ----------------
*/
@@ -1281,8 +1258,6 @@ acpi_add_single_object(struct acpi_device **child,
goto end;
}
- if ((result = acpi_device_set_context(device, type)))
- goto end;
result = acpi_device_register(device, parent);
@@ -1402,7 +1377,12 @@ static int acpi_bus_scan(struct acpi_device *start, struct acpi_bus_ops *ops)
* TBD: Need notifications and other detection mechanisms
* in place before we can fully implement this.
*/
- if (child->status.present) {
+ /*
+ * When the device is not present but functional, it is also
+ * necessary to scan the children of this device.
+ */
+ if (child->status.present || (!child->status.present &&
+ child->status.functional)) {
status = acpi_get_next_object(ACPI_TYPE_ANY, chandle,
NULL, NULL);
if (ACPI_SUCCESS(status)) {
@@ -1545,7 +1525,6 @@ static int acpi_bus_scan_fixed(struct acpi_device *root)
return result;
}
-int __init acpi_boot_ec_enable(void);
static int __init acpi_scan_init(void)
{
@@ -1579,9 +1558,6 @@ static int __init acpi_scan_init(void)
*/
result = acpi_bus_scan_fixed(acpi_root);
- /* EC region might be needed at bus_scan, so enable it now */
- acpi_boot_ec_enable();
-
if (!result)
result = acpi_bus_scan(acpi_root, &ops);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-27 09:06:05 +0000