summaryrefslogtreecommitdiffstats
path: root/drivers/acpi/power.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/acpi/power.c')
-rw-r--r--drivers/acpi/power.c125
1 files changed, 55 insertions, 70 deletions
diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c
index efc4bb751286..224f729f700e 100644
--- a/drivers/acpi/power.c
+++ b/drivers/acpi/power.c
@@ -98,22 +98,21 @@ acpi_power_get_context(acpi_handle handle,
int result = 0;
struct acpi_device *device = NULL;
- ACPI_FUNCTION_TRACE("acpi_power_get_context");
if (!resource)
- return_VALUE(-ENODEV);
+ return -ENODEV;
result = acpi_bus_get_device(handle, &device);
if (result) {
printk(KERN_WARNING PREFIX "Getting context [%p]\n", handle);
- return_VALUE(result);
+ return result;
}
*resource = (struct acpi_power_resource *)acpi_driver_data(device);
if (!resource)
- return_VALUE(-ENODEV);
+ return -ENODEV;
- return_VALUE(0);
+ return 0;
}
static int acpi_power_get_state(struct acpi_power_resource *resource)
@@ -121,14 +120,13 @@ static int acpi_power_get_state(struct acpi_power_resource *resource)
acpi_status status = AE_OK;
unsigned long sta = 0;
- ACPI_FUNCTION_TRACE("acpi_power_get_state");
if (!resource)
- return_VALUE(-EINVAL);
+ return -EINVAL;
status = acpi_evaluate_integer(resource->handle, "_STA", NULL, &sta);
if (ACPI_FAILURE(status))
- return_VALUE(-ENODEV);
+ return -ENODEV;
if (sta & 0x01)
resource->state = ACPI_POWER_RESOURCE_STATE_ON;
@@ -138,7 +136,7 @@ static int acpi_power_get_state(struct acpi_power_resource *resource)
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Resource [%s] is %s\n",
resource->name, resource->state ? "on" : "off"));
- return_VALUE(0);
+ return 0;
}
static int acpi_power_get_list_state(struct acpi_handle_list *list, int *state)
@@ -147,20 +145,19 @@ static int acpi_power_get_list_state(struct acpi_handle_list *list, int *state)
struct acpi_power_resource *resource = NULL;
u32 i = 0;
- ACPI_FUNCTION_TRACE("acpi_power_get_list_state");
if (!list || !state)
- return_VALUE(-EINVAL);
+ return -EINVAL;
/* The state of the list is 'on' IFF all resources are 'on'. */
for (i = 0; i < list->count; i++) {
result = acpi_power_get_context(list->handles[i], &resource);
if (result)
- return_VALUE(result);
+ return result;
result = acpi_power_get_state(resource);
if (result)
- return_VALUE(result);
+ return result;
*state = resource->state;
@@ -171,7 +168,7 @@ static int acpi_power_get_list_state(struct acpi_handle_list *list, int *state)
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Resource list is %s\n",
*state ? "on" : "off"));
- return_VALUE(result);
+ return result;
}
static int acpi_power_on(acpi_handle handle)
@@ -181,11 +178,10 @@ static int acpi_power_on(acpi_handle handle)
struct acpi_device *device = NULL;
struct acpi_power_resource *resource = NULL;
- ACPI_FUNCTION_TRACE("acpi_power_on");
result = acpi_power_get_context(handle, &resource);
if (result)
- return_VALUE(result);
+ return result;
resource->references++;
@@ -193,29 +189,29 @@ static int acpi_power_on(acpi_handle handle)
|| (resource->state == ACPI_POWER_RESOURCE_STATE_ON)) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Resource [%s] already on\n",
resource->name));
- return_VALUE(0);
+ return 0;
}
status = acpi_evaluate_object(resource->handle, "_ON", NULL, NULL);
if (ACPI_FAILURE(status))
- return_VALUE(-ENODEV);
+ return -ENODEV;
result = acpi_power_get_state(resource);
if (result)
- return_VALUE(result);
+ return result;
if (resource->state != ACPI_POWER_RESOURCE_STATE_ON)
- return_VALUE(-ENOEXEC);
+ return -ENOEXEC;
/* Update the power resource's _device_ power state */
result = acpi_bus_get_device(resource->handle, &device);
if (result)
- return_VALUE(result);
+ return result;
device->power.state = ACPI_STATE_D0;
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Resource [%s] turned on\n",
resource->name));
- return_VALUE(0);
+ return 0;
}
static int acpi_power_off_device(acpi_handle handle)
@@ -225,11 +221,10 @@ static int acpi_power_off_device(acpi_handle handle)
struct acpi_device *device = NULL;
struct acpi_power_resource *resource = NULL;
- ACPI_FUNCTION_TRACE("acpi_power_off_device");
result = acpi_power_get_context(handle, &resource);
if (result)
- return_VALUE(result);
+ return result;
if (resource->references)
resource->references--;
@@ -238,35 +233,35 @@ static int acpi_power_off_device(acpi_handle handle)
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Resource [%s] is still in use, dereferencing\n",
device->pnp.bus_id));
- return_VALUE(0);
+ return 0;
}
if (resource->state == ACPI_POWER_RESOURCE_STATE_OFF) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Resource [%s] already off\n",
device->pnp.bus_id));
- return_VALUE(0);
+ return 0;
}
status = acpi_evaluate_object(resource->handle, "_OFF", NULL, NULL);
if (ACPI_FAILURE(status))
- return_VALUE(-ENODEV);
+ return -ENODEV;
result = acpi_power_get_state(resource);
if (result)
- return_VALUE(result);
+ return result;
if (resource->state != ACPI_POWER_RESOURCE_STATE_OFF)
- return_VALUE(-ENOEXEC);
+ return -ENOEXEC;
/* Update the power resource's _device_ power state */
result = acpi_bus_get_device(resource->handle, &device);
if (result)
- return_VALUE(result);
+ return result;
device->power.state = ACPI_STATE_D3;
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Resource [%s] turned off\n",
resource->name));
- return_VALUE(0);
+ return 0;
}
/*
@@ -282,9 +277,8 @@ int acpi_enable_wakeup_device_power(struct acpi_device *dev)
int i;
int ret = 0;
- ACPI_FUNCTION_TRACE("acpi_enable_wakeup_device_power");
if (!dev || !dev->wakeup.flags.valid)
- return_VALUE(-1);
+ return -1;
arg.integer.value = 1;
/* Open power resource */
@@ -293,7 +287,7 @@ int acpi_enable_wakeup_device_power(struct acpi_device *dev)
if (ret) {
printk(KERN_ERR PREFIX "Transition power state\n");
dev->wakeup.flags.valid = 0;
- return_VALUE(-1);
+ return -1;
}
}
@@ -305,7 +299,7 @@ int acpi_enable_wakeup_device_power(struct acpi_device *dev)
ret = -1;
}
- return_VALUE(ret);
+ return ret;
}
/*
@@ -321,10 +315,9 @@ int acpi_disable_wakeup_device_power(struct acpi_device *dev)
int i;
int ret = 0;
- ACPI_FUNCTION_TRACE("acpi_disable_wakeup_device_power");
if (!dev || !dev->wakeup.flags.valid)
- return_VALUE(-1);
+ return -1;
arg.integer.value = 0;
/* Execute PSW */
@@ -332,7 +325,7 @@ int acpi_disable_wakeup_device_power(struct acpi_device *dev)
if (ACPI_FAILURE(status) && (status != AE_NOT_FOUND)) {
printk(KERN_ERR PREFIX "Evaluate _PSW\n");
dev->wakeup.flags.valid = 0;
- return_VALUE(-1);
+ return -1;
}
/* Close power resource */
@@ -341,11 +334,11 @@ int acpi_disable_wakeup_device_power(struct acpi_device *dev)
if (ret) {
printk(KERN_ERR PREFIX "Transition power state\n");
dev->wakeup.flags.valid = 0;
- return_VALUE(-1);
+ return -1;
}
}
- return_VALUE(ret);
+ return ret;
}
/* --------------------------------------------------------------------------
@@ -359,10 +352,9 @@ int acpi_power_get_inferred_state(struct acpi_device *device)
int list_state = 0;
int i = 0;
- ACPI_FUNCTION_TRACE("acpi_power_get_inferred_state");
if (!device)
- return_VALUE(-EINVAL);
+ return -EINVAL;
device->power.state = ACPI_STATE_UNKNOWN;
@@ -377,17 +369,17 @@ int acpi_power_get_inferred_state(struct acpi_device *device)
result = acpi_power_get_list_state(list, &list_state);
if (result)
- return_VALUE(result);
+ return result;
if (list_state == ACPI_POWER_RESOURCE_STATE_ON) {
device->power.state = i;
- return_VALUE(0);
+ return 0;
}
}
device->power.state = ACPI_STATE_D3;
- return_VALUE(0);
+ return 0;
}
int acpi_power_transition(struct acpi_device *device, int state)
@@ -397,14 +389,13 @@ int acpi_power_transition(struct acpi_device *device, int state)
struct acpi_handle_list *tl = NULL; /* Target Resources */
int i = 0;
- ACPI_FUNCTION_TRACE("acpi_power_transition");
if (!device || (state < ACPI_STATE_D0) || (state > ACPI_STATE_D3))
- return_VALUE(-EINVAL);
+ return -EINVAL;
if ((device->power.state < ACPI_STATE_D0)
|| (device->power.state > ACPI_STATE_D3))
- return_VALUE(-ENODEV);
+ return -ENODEV;
cl = &device->power.states[device->power.state].resources;
tl = &device->power.states[state].resources;
@@ -444,7 +435,7 @@ int acpi_power_transition(struct acpi_device *device, int state)
printk(KERN_WARNING PREFIX "Transitioning device [%s] to D%d\n",
device->pnp.bus_id, state);
- return_VALUE(result);
+ return result;
}
/* --------------------------------------------------------------------------
@@ -457,7 +448,6 @@ static int acpi_power_seq_show(struct seq_file *seq, void *offset)
{
struct acpi_power_resource *resource = NULL;
- ACPI_FUNCTION_TRACE("acpi_power_seq_show");
resource = (struct acpi_power_resource *)seq->private;
@@ -484,7 +474,7 @@ static int acpi_power_seq_show(struct seq_file *seq, void *offset)
resource->order, resource->references);
end:
- return_VALUE(0);
+ return 0;
}
static int acpi_power_open_fs(struct inode *inode, struct file *file)
@@ -496,34 +486,32 @@ static int acpi_power_add_fs(struct acpi_device *device)
{
struct proc_dir_entry *entry = NULL;
- ACPI_FUNCTION_TRACE("acpi_power_add_fs");
if (!device)
- return_VALUE(-EINVAL);
+ return -EINVAL;
if (!acpi_device_dir(device)) {
acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device),
acpi_power_dir);
if (!acpi_device_dir(device))
- return_VALUE(-ENODEV);
+ return -ENODEV;
}
/* 'status' [R] */
entry = create_proc_entry(ACPI_POWER_FILE_STATUS,
S_IRUGO, acpi_device_dir(device));
if (!entry)
- return_VALUE(-EIO);
+ return -EIO;
else {
entry->proc_fops = &acpi_power_fops;
entry->data = acpi_driver_data(device);
}
- return_VALUE(0);
+ return 0;
}
static int acpi_power_remove_fs(struct acpi_device *device)
{
- ACPI_FUNCTION_TRACE("acpi_power_remove_fs");
if (acpi_device_dir(device)) {
remove_proc_entry(ACPI_POWER_FILE_STATUS,
@@ -532,7 +520,7 @@ static int acpi_power_remove_fs(struct acpi_device *device)
acpi_device_dir(device) = NULL;
}
- return_VALUE(0);
+ return 0;
}
/* --------------------------------------------------------------------------
@@ -547,14 +535,13 @@ static int acpi_power_add(struct acpi_device *device)
union acpi_object acpi_object;
struct acpi_buffer buffer = { sizeof(acpi_object), &acpi_object };
- ACPI_FUNCTION_TRACE("acpi_power_add");
if (!device)
- return_VALUE(-EINVAL);
+ return -EINVAL;
resource = kmalloc(sizeof(struct acpi_power_resource), GFP_KERNEL);
if (!resource)
- return_VALUE(-ENOMEM);
+ return -ENOMEM;
memset(resource, 0, sizeof(struct acpi_power_resource));
resource->handle = device->handle;
@@ -599,17 +586,16 @@ static int acpi_power_add(struct acpi_device *device)
if (result)
kfree(resource);
- return_VALUE(result);
+ return result;
}
static int acpi_power_remove(struct acpi_device *device, int type)
{
struct acpi_power_resource *resource = NULL;
- ACPI_FUNCTION_TRACE("acpi_power_remove");
if (!device || !acpi_driver_data(device))
- return_VALUE(-EINVAL);
+ return -EINVAL;
resource = (struct acpi_power_resource *)acpi_driver_data(device);
@@ -617,31 +603,30 @@ static int acpi_power_remove(struct acpi_device *device, int type)
kfree(resource);
- return_VALUE(0);
+ return 0;
}
static int __init acpi_power_init(void)
{
int result = 0;
- ACPI_FUNCTION_TRACE("acpi_power_init");
if (acpi_disabled)
- return_VALUE(0);
+ return 0;
INIT_LIST_HEAD(&acpi_power_resource_list);
acpi_power_dir = proc_mkdir(ACPI_POWER_CLASS, acpi_root_dir);
if (!acpi_power_dir)
- return_VALUE(-ENODEV);
+ return -ENODEV;
result = acpi_bus_register_driver(&acpi_power_driver);
if (result < 0) {
remove_proc_entry(ACPI_POWER_CLASS, acpi_root_dir);
- return_VALUE(-ENODEV);
+ return -ENODEV;
}
- return_VALUE(0);
+ return 0;
}
subsys_initcall(acpi_power_init);
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-27 04:09:34 +0000