#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/acpi.h>
+#include <linux/signal.h>
+#include <linux/kthread.h>
#include <acpi/acpi_drivers.h>
-#include <acpi/acinterp.h> /* for acpi_ex_eisa_id_to_string() */
#define _COMPONENT ACPI_BUS_COMPONENT
-ACPI_MODULE_NAME("scan")
+ACPI_MODULE_NAME("scan");
#define STRUCT_TO_INT(s) (*((int*)&s))
extern struct acpi_device *acpi_root;
#define ACPI_BUS_CLASS "system_bus"
-#define ACPI_BUS_HID "ACPI_BUS"
-#define ACPI_BUS_DRIVER_NAME "ACPI Bus Driver"
+#define ACPI_BUS_HID "LNXSYBUS"
#define ACPI_BUS_DEVICE_NAME "System Bus"
static LIST_HEAD(acpi_device_list);
LIST_HEAD(acpi_wakeup_device_list);
struct acpi_device_bus_id{
- char bus_id[9];
+ char bus_id[15];
unsigned int instance_no;
struct list_head node;
};
-static int acpi_eject_operation(acpi_handle handle, int lockable)
+
+/*
+ * Creates hid/cid(s) string needed for modalias and uevent
+ * e.g. on a device with hid:IBM0001 and cid:ACPI0001 you get:
+ * char *modalias: "acpi:IBM0001:ACPI0001"
+*/
+static int create_modalias(struct acpi_device *acpi_dev, char *modalias,
+ int size)
+{
+ int len;
+ int count;
+
+ if (!acpi_dev->flags.hardware_id && !acpi_dev->flags.compatible_ids)
+ return -ENODEV;
+
+ len = snprintf(modalias, size, "acpi:");
+ size -= len;
+
+ if (acpi_dev->flags.hardware_id) {
+ count = snprintf(&modalias[len], size, "%s:",
+ acpi_dev->pnp.hardware_id);
+ if (count < 0 || count >= size)
+ return -EINVAL;
+ len += count;
+ size -= count;
+ }
+
+ if (acpi_dev->flags.compatible_ids) {
+ struct acpi_compatible_id_list *cid_list;
+ int i;
+
+ cid_list = acpi_dev->pnp.cid_list;
+ for (i = 0; i < cid_list->count; i++) {
+ count = snprintf(&modalias[len], size, "%s:",
+ cid_list->id[i].value);
+ if (count < 0 || count >= size) {
+ printk(KERN_ERR PREFIX "%s cid[%i] exceeds event buffer size",
+ acpi_dev->pnp.device_name, i);
+ break;
+ }
+ len += count;
+ size -= count;
+ }
+ }
+
+ modalias[len] = '\0';
+ return len;
+}
+
+static ssize_t
+acpi_device_modalias_show(struct device *dev, struct device_attribute *attr, char *buf) {
+ struct acpi_device *acpi_dev = to_acpi_device(dev);
+ int len;
+
+ /* Device has no HID and no CID or string is >1024 */
+ len = create_modalias(acpi_dev, buf, 1024);
+ if (len <= 0)
+ return 0;
+ buf[len++] = '\n';
+ return len;
+}
+static DEVICE_ATTR(modalias, 0444, acpi_device_modalias_show, NULL);
+
+static int acpi_bus_hot_remove_device(void *context)
{
+ struct acpi_device *device;
+ acpi_handle handle = context;
struct acpi_object_list arg_list;
union acpi_object arg;
acpi_status status = AE_OK;
- /*
- * TBD: evaluate _PS3?
- */
+ if (acpi_bus_get_device(handle, &device))
+ return 0;
+
+ if (!device)
+ return 0;
+
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Hot-removing device %s...\n", dev_name(&device->dev)));
+
+ if (acpi_bus_trim(device, 1)) {
+ 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)
+ printk(KERN_WARNING PREFIX
+ "Power-off device failed\n");
- if (lockable) {
+ if (device->flags.lockable) {
arg_list.count = 1;
arg_list.pointer = &arg;
arg.type = ACPI_TYPE_INTEGER;
/*
* TBD: _EJD support.
*/
-
status = acpi_evaluate_object(handle, "_EJ0", &arg_list, NULL);
- if (ACPI_FAILURE(status)) {
- return (-ENODEV);
- }
+ if (ACPI_FAILURE(status))
+ return -ENODEV;
- return (0);
+ return 0;
}
static ssize_t
acpi_eject_store(struct device *d, struct device_attribute *attr,
const char *buf, size_t count)
{
- int result;
int ret = count;
- int islockable;
acpi_status status;
- acpi_handle handle;
acpi_object_type type = 0;
struct acpi_device *acpi_device = to_acpi_device(d);
+ struct task_struct *task;
if ((!count) || (buf[0] != '1')) {
return -EINVAL;
goto err;
}
- islockable = acpi_device->flags.lockable;
- handle = acpi_device->handle;
-
- result = acpi_bus_trim(acpi_device, 1);
-
- if (!result)
- result = acpi_eject_operation(handle, islockable);
-
- if (result) {
- ret = -EBUSY;
- }
- err:
+ /* remove the device in another thread to fix the deadlock issue */
+ task = kthread_run(acpi_bus_hot_remove_device,
+ acpi_device->handle, "acpi_hot_remove_device");
+ if (IS_ERR(task))
+ ret = PTR_ERR(task);
+err:
return ret;
}
goto end;
}
+ if (dev->flags.hardware_id || dev->flags.compatible_ids){
+ result = device_create_file(&dev->dev, &dev_attr_modalias);
+ if(result)
+ goto end;
+ }
+
/*
* If device has _EJ0, 'eject' file is created that is used to trigger
* hot-removal function from userland.
if (ACPI_SUCCESS(status))
device_remove_file(&dev->dev, &dev_attr_eject);
+ if (dev->flags.hardware_id || dev->flags.compatible_ids)
+ device_remove_file(&dev->dev, &dev_attr_modalias);
+
if(dev->flags.hardware_id)
device_remove_file(&dev->dev, &dev_attr_hid);
if(dev->handle)
/* --------------------------------------------------------------------------
ACPI Bus operations
-------------------------------------------------------------------------- */
+
+int acpi_match_device_ids(struct acpi_device *device,
+ const struct acpi_device_id *ids)
+{
+ 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))
+ return 0;
+ }
+ }
+
+ if (device->flags.compatible_ids) {
+ struct acpi_compatible_id_list *cid_list = device->pnp.cid_list;
+ int i;
+
+ for (id = ids; id->id[0]; id++) {
+ /* compare multiple _CID entries against driver ids */
+ for (i = 0; i < cid_list->count; i++) {
+ if (!strcmp((char*)id->id,
+ cid_list->id[i].value))
+ return 0;
+ }
+ }
+ }
+
+ return -ENOENT;
+}
+EXPORT_SYMBOL(acpi_match_device_ids);
+
static void acpi_device_release(struct device *dev)
{
struct acpi_device *acpi_dev = to_acpi_device(dev);
struct acpi_device *acpi_dev = to_acpi_device(dev);
struct acpi_driver *acpi_drv = to_acpi_driver(drv);
- return !acpi_match_ids(acpi_dev, acpi_drv->ids);
+ return !acpi_match_device_ids(acpi_dev, acpi_drv->ids);
}
-static int acpi_device_uevent(struct device *dev, char **envp, int num_envp,
- char *buffer, int buffer_size)
+static int acpi_device_uevent(struct device *dev, struct kobj_uevent_env *env)
{
struct acpi_device *acpi_dev = to_acpi_device(dev);
- int i = 0, length = 0, ret = 0;
+ int len;
- if (acpi_dev->flags.hardware_id)
- ret = add_uevent_var(envp, num_envp, &i,
- buffer, buffer_size, &length,
- "HWID=%s", acpi_dev->pnp.hardware_id);
- if (ret)
+ if (add_uevent_var(env, "MODALIAS="))
return -ENOMEM;
- if (acpi_dev->flags.compatible_ids) {
- int j;
- struct acpi_compatible_id_list *cid_list;
-
- cid_list = acpi_dev->pnp.cid_list;
-
- for (j = 0; j < cid_list->count; j++) {
- ret = add_uevent_var(envp, num_envp, &i, buffer,
- buffer_size, &length, "COMPTID=%s",
- cid_list->id[j].value);
- if (ret)
- return -ENOMEM;
- }
- }
-
- envp[i] = NULL;
+ len = create_modalias(acpi_dev, &env->buf[env->buflen - 1],
+ sizeof(env->buf) - env->buflen);
+ if (len >= (sizeof(env->buf) - env->buflen))
+ return -ENOMEM;
+ env->buflen += len;
return 0;
}
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;
return ;
}
-static struct bus_type acpi_bus_type = {
+struct bus_type acpi_bus_type = {
.name = "acpi",
.suspend = acpi_device_suspend,
.resume = acpi_device_resume,
* If failed, create one and link it into acpi_bus_id_list
*/
list_for_each_entry(acpi_device_bus_id, &acpi_bus_id_list, node) {
- if(!strcmp(acpi_device_bus_id->bus_id, device->flags.hardware_id? device->pnp.hardware_id : "PNPIDNON")) {
+ if(!strcmp(acpi_device_bus_id->bus_id, device->flags.hardware_id? device->pnp.hardware_id : "device")) {
acpi_device_bus_id->instance_no ++;
found = 1;
kfree(new_bus_id);
}
if(!found) {
acpi_device_bus_id = new_bus_id;
- strcpy(acpi_device_bus_id->bus_id, device->flags.hardware_id ? device->pnp.hardware_id : "PNPIDNON");
+ strcpy(acpi_device_bus_id->bus_id, device->flags.hardware_id ? device->pnp.hardware_id : "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);
device->dev.release = &acpi_device_release;
result = device_add(&device->dev);
if(result) {
- printk("Error adding device %s", device->dev.bus_id);
+ dev_err(&device->dev, "Error adding device\n");
goto end;
}
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;
result = driver->ops.add(device);
if (result) {
device->driver = NULL;
- acpi_driver_data(device) = NULL;
+ device->driver_data = NULL;
return result;
}
status = acpi_evaluate_object(handle, "_EJD", NULL, &buffer);
if (ACPI_SUCCESS(status)) {
obj = buffer.pointer;
- status = acpi_get_handle(NULL, obj->string.pointer, ejd);
+ status = acpi_get_handle(ACPI_ROOT_OBJECT, obj->string.pointer,
+ ejd);
kfree(buffer.pointer);
}
return status;
return;
}
-int acpi_match_ids(struct acpi_device *device, char *ids)
-{
- if (device->flags.hardware_id)
- if (strstr(ids, device->pnp.hardware_id))
- return 0;
-
- if (device->flags.compatible_ids) {
- struct acpi_compatible_id_list *cid_list = device->pnp.cid_list;
- int i;
-
- /* compare multiple _CID entries against driver ids */
- for (i = 0; i < cid_list->count; i++) {
- if (strstr(ids, cid_list->id[i].value))
- return 0;
- }
- }
- return -ENOENT;
-}
-
static int acpi_bus_get_perf_flags(struct acpi_device *device)
{
device->performance.state = ACPI_STATE_UNKNOWN;
device->wakeup.resources.count = package->package.count - 2;
for (i = 0; i < device->wakeup.resources.count; i++) {
element = &(package->package.elements[i + 2]);
- if (element->type != ACPI_TYPE_ANY) {
+ if (element->type != ACPI_TYPE_LOCAL_REFERENCE)
return AE_BAD_DATA;
- }
device->wakeup.resources.handles[i] = element->reference.handle;
}
acpi_status status = 0;
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
union acpi_object *package = NULL;
+ int psw_error;
+ struct acpi_device_id button_device_ids[] = {
+ {"PNP0C0D", 0},
+ {"PNP0C0C", 0},
+ {"PNP0C0E", 0},
+ {"", 0},
+ };
/* _PRW */
status = acpi_evaluate_object(device->handle, "_PRW", NULL, &buffer);
kfree(buffer.pointer);
device->wakeup.flags.valid = 1;
+ /* Call _PSW/_DSW object to disable its ability to wake the sleeping
+ * system for the ACPI device with the _PRW object.
+ * The _PSW object is depreciated in ACPI 3.0 and is replaced by _DSW.
+ * So it is necessary to call _DSW object first. Only when it is not
+ * present will the _PSW object used.
+ */
+ psw_error = acpi_device_sleep_wake(device, 0, 0, 0);
+ if (psw_error)
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "error in _DSW or _PSW evaluation\n"));
+
/* Power button, Lid switch always enable wakeup */
- if (!acpi_match_ids(device, "PNP0C0D,PNP0C0C,PNP0C0E"))
+ if (!acpi_match_device_ids(device, button_device_ids))
device->wakeup.flags.run_wake = 1;
end:
/* TBD: System wake support and resource requirements. */
device->power.state = ACPI_STATE_UNKNOWN;
+ acpi_bus_get_power(device->handle, &(device->power.state));
return 0;
}
if (ACPI_SUCCESS(status))
device->flags.wake_capable = 1;
- /* TBD: Peformance management */
+ /* TBD: Performance management */
return 0;
}
}
}
-static int
-acpi_video_bus_match(struct acpi_device *device)
-{
- acpi_handle h_dummy1;
- acpi_handle h_dummy2;
- acpi_handle h_dummy3;
-
+/*
+ * acpi_bay_match - see if a device is an ejectable driver bay
+ *
+ * If an acpi object is ejectable and has one of the ACPI ATA methods defined,
+ * then we can safely call it an ejectable drive bay
+ */
+static int acpi_bay_match(struct acpi_device *device){
+ acpi_status status;
+ acpi_handle handle;
+ acpi_handle tmp;
+ acpi_handle phandle;
- if (!device)
- return -EINVAL;
+ handle = device->handle;
- /* Since there is no HID, CID for ACPI Video drivers, we have
- * to check well known required nodes for each feature we support.
- */
+ status = acpi_get_handle(handle, "_EJ0", &tmp);
+ if (ACPI_FAILURE(status))
+ return -ENODEV;
- /* Does this device able to support video switching ? */
- if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOD", &h_dummy1)) &&
- ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOS", &h_dummy2)))
+ if ((ACPI_SUCCESS(acpi_get_handle(handle, "_GTF", &tmp))) ||
+ (ACPI_SUCCESS(acpi_get_handle(handle, "_GTM", &tmp))) ||
+ (ACPI_SUCCESS(acpi_get_handle(handle, "_STM", &tmp))) ||
+ (ACPI_SUCCESS(acpi_get_handle(handle, "_SDD", &tmp))))
return 0;
- /* Does this device able to retrieve a video ROM ? */
- if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_ROM", &h_dummy1)))
- return 0;
+ if (acpi_get_parent(handle, &phandle))
+ return -ENODEV;
- /* Does this device able to configure which video head to be POSTed ? */
- if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_VPO", &h_dummy1)) &&
- ACPI_SUCCESS(acpi_get_handle(device->handle, "_GPD", &h_dummy2)) &&
- ACPI_SUCCESS(acpi_get_handle(device->handle, "_SPD", &h_dummy3)))
- return 0;
+ if ((ACPI_SUCCESS(acpi_get_handle(phandle, "_GTF", &tmp))) ||
+ (ACPI_SUCCESS(acpi_get_handle(phandle, "_GTM", &tmp))) ||
+ (ACPI_SUCCESS(acpi_get_handle(phandle, "_STM", &tmp))) ||
+ (ACPI_SUCCESS(acpi_get_handle(phandle, "_SDD", &tmp))))
+ return 0;
return -ENODEV;
}
+/*
+ * acpi_dock_match - see if a device has a _DCK method
+ */
+static int acpi_dock_match(struct acpi_device *device)
+{
+ acpi_handle tmp;
+ return acpi_get_handle(device->handle, "_DCK", &tmp);
+}
+
static void acpi_device_set_id(struct acpi_device *device,
struct acpi_device *parent, acpi_handle handle,
int type)
char *hid = NULL;
char *uid = NULL;
struct acpi_compatible_id_list *cid_list = NULL;
+ const char *cid_add = NULL;
acpi_status status;
switch (type) {
case ACPI_BUS_TYPE_DEVICE:
status = acpi_get_object_info(handle, &buffer);
if (ACPI_FAILURE(status)) {
- printk("%s: Error reading device info\n", __FUNCTION__);
+ printk(KERN_ERR PREFIX "%s: Error reading device info\n", __func__);
return;
}
device->flags.bus_address = 1;
}
- if(!(info->valid & (ACPI_VALID_HID | ACPI_VALID_CID))){
- status = acpi_video_bus_match(device);
- if(ACPI_SUCCESS(status))
- hid = ACPI_VIDEO_HID;
- }
+ /* If we have a video/bay/dock device, add our selfdefined
+ HID to the CID list. Like that the video/bay/dock drivers
+ will get autoloaded and the device might still match
+ against another driver.
+ */
+ if (acpi_is_video_device(device))
+ cid_add = ACPI_VIDEO_HID;
+ else if (ACPI_SUCCESS(acpi_bay_match(device)))
+ cid_add = ACPI_BAY_HID;
+ else if (ACPI_SUCCESS(acpi_dock_match(device)))
+ cid_add = ACPI_DOCK_HID;
+
break;
case ACPI_BUS_TYPE_POWER:
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;
strcpy(device->pnp.unique_id, uid);
device->flags.unique_id = 1;
}
- if (cid_list) {
- device->pnp.cid_list = kmalloc(cid_list->size, GFP_KERNEL);
- if (device->pnp.cid_list)
- memcpy(device->pnp.cid_list, cid_list, cid_list->size);
- else
- printk(KERN_ERR "Memory allocation error\n");
+ if (cid_list || cid_add) {
+ struct acpi_compatible_id_list *list;
+ int size = 0;
+ int count = 0;
+
+ if (cid_list) {
+ size = cid_list->size;
+ } else if (cid_add) {
+ size = sizeof(struct acpi_compatible_id_list);
+ cid_list = ACPI_ALLOCATE_ZEROED((acpi_size) size);
+ if (!cid_list) {
+ printk(KERN_ERR "Memory allocation error\n");
+ kfree(buffer.pointer);
+ return;
+ } else {
+ cid_list->count = 0;
+ cid_list->size = size;
+ }
+ }
+ if (cid_add)
+ size += sizeof(struct acpi_compatible_id);
+ list = kmalloc(size, GFP_KERNEL);
+
+ if (list) {
+ if (cid_list) {
+ memcpy(list, cid_list, cid_list->size);
+ count = cid_list->count;
+ }
+ if (cid_add) {
+ strncpy(list->id[count].value, cid_add,
+ ACPI_MAX_CID_LENGTH);
+ count++;
+ device->flags.compatible_ids = 1;
+ }
+ list->size = size;
+ list->count = count;
+ device->pnp.cid_list = list;
+ } else
+ printk(KERN_ERR PREFIX "Memory allocation error\n");
}
kfree(buffer.pointer);
acpi_bus_data_handler, device);
if (ACPI_FAILURE(status)) {
- printk("Error attaching device data\n");
+ printk(KERN_ERR PREFIX "Error attaching device data\n");
result = -ENODEV;
}
}
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)
{
if (!dev)
if (!child)
return -EINVAL;
- device = kmalloc(sizeof(struct acpi_device), GFP_KERNEL);
+ device = kzalloc(sizeof(struct acpi_device), GFP_KERNEL);
if (!device) {
printk(KERN_ERR PREFIX "Memory allocation error\n");
return -ENOMEM;
}
- memset(device, 0, sizeof(struct acpi_device));
device->handle = handle;
device->parent = parent;
case ACPI_BUS_TYPE_PROCESSOR:
case ACPI_BUS_TYPE_DEVICE:
result = acpi_bus_get_status(device);
- if (ACPI_FAILURE(result) || !device->status.present) {
- result = -ENOENT;
+ if (ACPI_FAILURE(result)) {
+ 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:
- STRUCT_TO_INT(device->status) = 0x0F;
+ STRUCT_TO_INT(device->status) =
+ ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED |
+ ACPI_STA_DEVICE_UI | ACPI_STA_DEVICE_FUNCTIONING;
break;
}
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
* ----------------
*/
goto end;
}
- if ((result = acpi_device_set_context(device, type)))
- goto end;
-
- acpi_device_get_debug_info(device, handle, type);
result = acpi_device_register(device, parent);
* 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)) {
/*
* Enumerate all fixed-feature devices.
*/
- if (acpi_fadt.pwr_button == 0) {
+ if ((acpi_gbl_FADT.flags & ACPI_FADT_POWER_BUTTON) == 0) {
result = acpi_add_single_object(&device, acpi_root,
NULL,
ACPI_BUS_TYPE_POWER_BUTTON,
&ops);
}
- if (acpi_fadt.sleep_button == 0) {
+ if ((acpi_gbl_FADT.flags & ACPI_FADT_SLEEP_BUTTON) == 0) {
result = acpi_add_single_object(&device, acpi_root,
NULL,
ACPI_BUS_TYPE_SLEEP_BUTTON,
return result;
}
+
static int __init acpi_scan_init(void)
{
int result;
* Enumerate devices in the ACPI namespace.
*/
result = acpi_bus_scan_fixed(acpi_root);
+
if (!result)
result = acpi_bus_scan(acpi_root, &ops);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff