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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.c109
1 files changed, 57 insertions, 52 deletions
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index f8316a05ede7..861ac378ce42 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -162,11 +162,10 @@ static void acpi_device_unregister(struct acpi_device *device, int type)
void acpi_bus_data_handler(acpi_handle handle, u32 function, void *context)
{
- ACPI_FUNCTION_TRACE("acpi_bus_data_handler");
/* TBD */
- return_VOID;
+ return;
}
static int acpi_bus_get_power_flags(struct acpi_device *device)
@@ -175,7 +174,6 @@ static int acpi_bus_get_power_flags(struct acpi_device *device)
acpi_handle handle = NULL;
u32 i = 0;
- ACPI_FUNCTION_TRACE("acpi_bus_get_power_flags");
/*
* Power Management Flags
@@ -228,7 +226,7 @@ static int acpi_bus_get_power_flags(struct acpi_device *device)
device->power.state = ACPI_STATE_UNKNOWN;
- return_VALUE(0);
+ return 0;
}
int acpi_match_ids(struct acpi_device *device, char *ids)
@@ -306,20 +304,18 @@ static int acpi_bus_get_wakeup_device_flags(struct acpi_device *device)
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
union acpi_object *package = NULL;
- ACPI_FUNCTION_TRACE("acpi_bus_get_wakeup_flags");
/* _PRW */
status = acpi_evaluate_object(device->handle, "_PRW", NULL, &buffer);
if (ACPI_FAILURE(status)) {
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Error evaluating _PRW\n"));
+ ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PRW"));
goto end;
}
package = (union acpi_object *)buffer.pointer;
status = acpi_bus_extract_wakeup_device_power_package(device, package);
if (ACPI_FAILURE(status)) {
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
- "Error extracting _PRW package\n"));
+ ACPI_EXCEPTION((AE_INFO, status, "Extracting _PRW package"));
goto end;
}
@@ -333,7 +329,7 @@ static int acpi_bus_get_wakeup_device_flags(struct acpi_device *device)
end:
if (ACPI_FAILURE(status))
device->flags.wake_capable = 0;
- return_VALUE(0);
+ return 0;
}
/* --------------------------------------------------------------------------
@@ -489,19 +485,18 @@ acpi_bus_driver_init(struct acpi_device *device, struct acpi_driver *driver)
{
int result = 0;
- ACPI_FUNCTION_TRACE("acpi_bus_driver_init");
if (!device || !driver)
- return_VALUE(-EINVAL);
+ return -EINVAL;
if (!driver->ops.add)
- return_VALUE(-ENOSYS);
+ return -ENOSYS;
result = driver->ops.add(device);
if (result) {
device->driver = NULL;
acpi_driver_data(device) = NULL;
- return_VALUE(result);
+ return result;
}
device->driver = driver;
@@ -513,7 +508,7 @@ acpi_bus_driver_init(struct acpi_device *device, struct acpi_driver *driver)
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Driver successfully bound to device\n"));
- return_VALUE(0);
+ return 0;
}
static int acpi_start_single_object(struct acpi_device *device)
@@ -521,10 +516,9 @@ static int acpi_start_single_object(struct acpi_device *device)
int result = 0;
struct acpi_driver *driver;
- ACPI_FUNCTION_TRACE("acpi_start_single_object");
if (!(driver = device->driver))
- return_VALUE(0);
+ return 0;
if (driver->ops.start) {
result = driver->ops.start(device);
@@ -532,14 +526,13 @@ static int acpi_start_single_object(struct acpi_device *device)
driver->ops.remove(device, ACPI_BUS_REMOVAL_NORMAL);
}
- return_VALUE(result);
+ return result;
}
static void acpi_driver_attach(struct acpi_driver *drv)
{
struct list_head *node, *next;
- ACPI_FUNCTION_TRACE("acpi_driver_attach");
spin_lock(&acpi_device_lock);
list_for_each_safe(node, next, &acpi_device_list) {
@@ -568,7 +561,6 @@ static void acpi_driver_detach(struct acpi_driver *drv)
{
struct list_head *node, *next;
- ACPI_FUNCTION_TRACE("acpi_driver_detach");
spin_lock(&acpi_device_lock);
list_for_each_safe(node, next, &acpi_device_list) {
@@ -598,17 +590,16 @@ static void acpi_driver_detach(struct acpi_driver *drv)
*/
int acpi_bus_register_driver(struct acpi_driver *driver)
{
- ACPI_FUNCTION_TRACE("acpi_bus_register_driver");
if (acpi_disabled)
- return_VALUE(-ENODEV);
+ return -ENODEV;
spin_lock(&acpi_device_lock);
list_add_tail(&driver->node, &acpi_bus_drivers);
spin_unlock(&acpi_device_lock);
acpi_driver_attach(driver);
- return_VALUE(0);
+ return 0;
}
EXPORT_SYMBOL(acpi_bus_register_driver);
@@ -646,7 +637,6 @@ static int acpi_bus_find_driver(struct acpi_device *device)
int result = 0;
struct list_head *node, *next;
- ACPI_FUNCTION_TRACE("acpi_bus_find_driver");
spin_lock(&acpi_device_lock);
list_for_each_safe(node, next, &acpi_bus_drivers) {
@@ -666,19 +656,41 @@ static int acpi_bus_find_driver(struct acpi_device *device)
spin_unlock(&acpi_device_lock);
Done:
- return_VALUE(result);
+ return result;
}
/* --------------------------------------------------------------------------
Device Enumeration
-------------------------------------------------------------------------- */
+acpi_status
+acpi_bus_get_ejd(acpi_handle handle, acpi_handle *ejd)
+{
+ acpi_status status;
+ acpi_handle tmp;
+ struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
+ union acpi_object *obj;
+
+ status = acpi_get_handle(handle, "_EJD", &tmp);
+ if (ACPI_FAILURE(status))
+ return status;
+
+ status = acpi_evaluate_object(handle, "_EJD", NULL, &buffer);
+ if (ACPI_SUCCESS(status)) {
+ obj = buffer.pointer;
+ status = acpi_get_handle(NULL, obj->string.pointer, ejd);
+ kfree(buffer.pointer);
+ }
+ return status;
+}
+EXPORT_SYMBOL_GPL(acpi_bus_get_ejd);
+
+
static int acpi_bus_get_flags(struct acpi_device *device)
{
acpi_status status = AE_OK;
acpi_handle temp = NULL;
- ACPI_FUNCTION_TRACE("acpi_bus_get_flags");
/* Presence of _STA indicates 'dynamic_status' */
status = acpi_get_handle(device->handle, "_STA", &temp);
@@ -724,7 +736,7 @@ static int acpi_bus_get_flags(struct acpi_device *device)
/* TBD: Peformance management */
- return_VALUE(0);
+ return 0;
}
static void acpi_device_get_busid(struct acpi_device *device,
@@ -918,10 +930,9 @@ static int acpi_bus_remove(struct acpi_device *dev, int rmdevice)
int result = 0;
struct acpi_driver *driver;
- ACPI_FUNCTION_TRACE("acpi_bus_remove");
if (!dev)
- return_VALUE(-EINVAL);
+ return -EINVAL;
driver = dev->driver;
@@ -930,12 +941,12 @@ static int acpi_bus_remove(struct acpi_device *dev, int rmdevice)
if (driver->ops.stop) {
result = driver->ops.stop(dev, ACPI_BUS_REMOVAL_EJECT);
if (result)
- return_VALUE(result);
+ return result;
}
result = dev->driver->ops.remove(dev, ACPI_BUS_REMOVAL_EJECT);
if (result) {
- return_VALUE(result);
+ return result;
}
atomic_dec(&dev->driver->references);
@@ -944,7 +955,7 @@ static int acpi_bus_remove(struct acpi_device *dev, int rmdevice)
}
if (!rmdevice)
- return_VALUE(0);
+ return 0;
if (dev->flags.bus_address) {
if ((dev->parent) && (dev->parent->ops.unbind))
@@ -953,7 +964,7 @@ static int acpi_bus_remove(struct acpi_device *dev, int rmdevice)
acpi_device_unregister(dev, ACPI_BUS_REMOVAL_EJECT);
- return_VALUE(0);
+ return 0;
}
static int
@@ -963,15 +974,14 @@ acpi_add_single_object(struct acpi_device **child,
int result = 0;
struct acpi_device *device = NULL;
- ACPI_FUNCTION_TRACE("acpi_add_single_object");
if (!child)
- return_VALUE(-EINVAL);
+ return -EINVAL;
device = kmalloc(sizeof(struct acpi_device), GFP_KERNEL);
if (!device) {
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Memory allocation error\n"));
- return_VALUE(-ENOMEM);
+ printk(KERN_ERR PREFIX "Memory allocation error\n");
+ return -ENOMEM;
}
memset(device, 0, sizeof(struct acpi_device));
@@ -1096,7 +1106,7 @@ acpi_add_single_object(struct acpi_device **child,
kfree(device);
}
- return_VALUE(result);
+ return result;
}
static int acpi_bus_scan(struct acpi_device *start, struct acpi_bus_ops *ops)
@@ -1109,10 +1119,9 @@ static int acpi_bus_scan(struct acpi_device *start, struct acpi_bus_ops *ops)
acpi_object_type type = 0;
u32 level = 1;
- ACPI_FUNCTION_TRACE("acpi_bus_scan");
if (!start)
- return_VALUE(-EINVAL);
+ return -EINVAL;
parent = start;
phandle = start->handle;
@@ -1209,7 +1218,7 @@ static int acpi_bus_scan(struct acpi_device *start, struct acpi_bus_ops *ops)
}
}
- return_VALUE(0);
+ return 0;
}
int
@@ -1219,7 +1228,6 @@ acpi_bus_add(struct acpi_device **child,
int result;
struct acpi_bus_ops ops;
- ACPI_FUNCTION_TRACE("acpi_bus_add");
result = acpi_add_single_object(child, parent, handle, type);
if (!result) {
@@ -1227,7 +1235,7 @@ acpi_bus_add(struct acpi_device **child,
ops.acpi_op_add = 1;
result = acpi_bus_scan(*child, &ops);
}
- return_VALUE(result);
+ return result;
}
EXPORT_SYMBOL(acpi_bus_add);
@@ -1237,10 +1245,9 @@ int acpi_bus_start(struct acpi_device *device)
int result;
struct acpi_bus_ops ops;
- ACPI_FUNCTION_TRACE("acpi_bus_start");
if (!device)
- return_VALUE(-EINVAL);
+ return -EINVAL;
result = acpi_start_single_object(device);
if (!result) {
@@ -1248,7 +1255,7 @@ int acpi_bus_start(struct acpi_device *device)
ops.acpi_op_start = 1;
result = acpi_bus_scan(device, &ops);
}
- return_VALUE(result);
+ return result;
}
EXPORT_SYMBOL(acpi_bus_start);
@@ -1314,10 +1321,9 @@ static int acpi_bus_scan_fixed(struct acpi_device *root)
int result = 0;
struct acpi_device *device = NULL;
- ACPI_FUNCTION_TRACE("acpi_bus_scan_fixed");
if (!root)
- return_VALUE(-ENODEV);
+ return -ENODEV;
/*
* Enumerate all fixed-feature devices.
@@ -1338,7 +1344,7 @@ static int acpi_bus_scan_fixed(struct acpi_device *root)
result = acpi_start_single_object(device);
}
- return_VALUE(result);
+ return result;
}
@@ -1427,7 +1433,7 @@ static int acpi_device_resume(struct device * dev)
}
-struct bus_type acpi_bus_type = {
+static struct bus_type acpi_bus_type = {
.name = "acpi",
.suspend = acpi_device_suspend,
.resume = acpi_device_resume,
@@ -1440,10 +1446,9 @@ static int __init acpi_scan_init(void)
int result;
struct acpi_bus_ops ops;
- ACPI_FUNCTION_TRACE("acpi_scan_init");
if (acpi_disabled)
- return_VALUE(0);
+ return 0;
kset_register(&acpi_namespace_kset);
@@ -1488,7 +1493,7 @@ static int __init acpi_scan_init(void)
acpi_device_unregister(acpi_root, ACPI_BUS_REMOVAL_NORMAL);
Done:
- return_VALUE(result);
+ return result;
}
subsys_initcall(acpi_scan_init);
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-23 18:26:57 +0300