#include <linux/module.h>
#include <linux/init.h>
+#include <linux/kernel.h>
#include <linux/acpi.h>
#include <acpi/acpi_drivers.h>
static void acpi_device_register(struct acpi_device *device,
struct acpi_device *parent)
{
+ int err;
+
/*
* Linkage
* -------
device->kobj.parent = &parent->kobj;
device->kobj.ktype = &ktype_acpi_ns;
device->kobj.kset = &acpi_namespace_kset;
- kobject_register(&device->kobj);
+ err = kobject_register(&device->kobj);
+ if (err < 0)
+ printk(KERN_WARNING "%s: kobject_register error: %d\n",
+ __FUNCTION__, err);
create_sysfs_device_files(device);
}
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)
acpi_handle handle = NULL;
u32 i = 0;
- ACPI_FUNCTION_TRACE("acpi_bus_get_power_flags");
/*
* Power Management Flags
device->power.state = ACPI_STATE_UNKNOWN;
- return_VALUE(0);
+ return 0;
}
int acpi_match_ids(struct acpi_device *device, char *ids)
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;
}
- acpi_os_free(buffer.pointer);
+ kfree(buffer.pointer);
device->wakeup.flags.valid = 1;
/* Power button, Lid switch always enable wakeup */
end:
if (ACPI_FAILURE(status))
device->flags.wake_capable = 0;
- return_VALUE(0);
+ return 0;
}
/* --------------------------------------------------------------------------
{
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;
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)
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);
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) {
{
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) {
*/
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);
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) {
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);
/* TBD: Peformance management */
- return_VALUE(0);
+ return 0;
}
static void acpi_device_get_busid(struct acpi_device *device,
printk(KERN_ERR "Memory allocation error\n");
}
- acpi_os_free(buffer.pointer);
+ kfree(buffer.pointer);
}
static int acpi_device_set_context(struct acpi_device *device, int type)
return result;
}
-static void acpi_device_get_debug_info(struct acpi_device *device,
- acpi_handle handle, int type)
-{
-#ifdef CONFIG_ACPI_DEBUG_OUTPUT
- char *type_string = NULL;
- char name[80] = { '?', '\0' };
- struct acpi_buffer buffer = { sizeof(name), name };
-
- switch (type) {
- case ACPI_BUS_TYPE_DEVICE:
- type_string = "Device";
- acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer);
- break;
- case ACPI_BUS_TYPE_POWER:
- type_string = "Power Resource";
- acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer);
- break;
- case ACPI_BUS_TYPE_PROCESSOR:
- type_string = "Processor";
- acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer);
- break;
- case ACPI_BUS_TYPE_SYSTEM:
- type_string = "System";
- acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer);
- break;
- case ACPI_BUS_TYPE_THERMAL:
- type_string = "Thermal Zone";
- acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer);
- break;
- case ACPI_BUS_TYPE_POWER_BUTTON:
- type_string = "Power Button";
- sprintf(name, "PWRB");
- break;
- case ACPI_BUS_TYPE_SLEEP_BUTTON:
- type_string = "Sleep Button";
- sprintf(name, "SLPB");
- break;
- }
-
- printk(KERN_DEBUG "Found %s %s [%p]\n", type_string, name, handle);
-#endif /*CONFIG_ACPI_DEBUG_OUTPUT */
-}
-
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;
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);
}
if (!rmdevice)
- return_VALUE(0);
+ return 0;
if (dev->flags.bus_address) {
if ((dev->parent) && (dev->parent->ops.unbind))
acpi_device_unregister(dev, ACPI_BUS_REMOVAL_EJECT);
- return_VALUE(0);
+ return 0;
}
static int
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);
+ device = kzalloc(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));
device->handle = handle;
device->parent = parent;
if ((result = acpi_device_set_context(device, type)))
goto end;
- acpi_device_get_debug_info(device, handle, type);
-
acpi_device_register(device, parent);
/*
kfree(device);
}
- return_VALUE(result);
+ return result;
}
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;
}
}
- return_VALUE(0);
+ return 0;
}
int
int result;
struct acpi_bus_ops ops;
- ACPI_FUNCTION_TRACE("acpi_bus_add");
result = acpi_add_single_object(child, parent, handle, type);
if (!result) {
ops.acpi_op_add = 1;
result = acpi_bus_scan(*child, &ops);
}
- return_VALUE(result);
+ return result;
}
EXPORT_SYMBOL(acpi_bus_add);
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) {
ops.acpi_op_start = 1;
result = acpi_bus_scan(device, &ops);
}
- return_VALUE(result);
+ return result;
}
EXPORT_SYMBOL(acpi_bus_start);
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.
result = acpi_start_single_object(device);
}
- return_VALUE(result);
+ return result;
}
}
-struct bus_type acpi_bus_type = {
+static struct bus_type acpi_bus_type = {
.name = "acpi",
.suspend = acpi_device_suspend,
.resume = acpi_device_resume,
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);
+ result = kset_register(&acpi_namespace_kset);
+ if (result < 0)
+ printk(KERN_ERR PREFIX "kset_register error: %d\n", result);
result = bus_register(&acpi_bus_type);
if (result) {
acpi_device_unregister(acpi_root, ACPI_BUS_REMOVAL_NORMAL);
Done:
- return_VALUE(result);
+ return result;
}
subsys_initcall(acpi_scan_init);
git.samba.org / sfrench / cifs-2.6.git / blobdiff