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path: root/drivers/acpi/bus.c
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Diffstat (limited to 'drivers/acpi/bus.c')
-rw-r--r--drivers/acpi/bus.c105
1 files changed, 46 insertions, 59 deletions
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index 6c628629012..dec044c0427 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -60,20 +60,19 @@ int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device)
{
acpi_status status = AE_OK;
- ACPI_FUNCTION_TRACE("acpi_bus_get_device");
if (!device)
- return_VALUE(-EINVAL);
+ return -EINVAL;
/* TBD: Support fixed-feature devices */
status = acpi_get_data(handle, acpi_bus_data_handler, (void **)device);
if (ACPI_FAILURE(status) || !*device) {
ACPI_EXCEPTION((AE_INFO, status, "No context for object [%p]", handle));
- return_VALUE(-ENODEV);
+ return -ENODEV;
}
- return_VALUE(0);
+ return 0;
}
EXPORT_SYMBOL(acpi_bus_get_device);
@@ -83,10 +82,9 @@ int acpi_bus_get_status(struct acpi_device *device)
acpi_status status = AE_OK;
unsigned long sta = 0;
- ACPI_FUNCTION_TRACE("acpi_bus_get_status");
if (!device)
- return_VALUE(-EINVAL);
+ return -EINVAL;
/*
* Evaluate _STA if present.
@@ -95,7 +93,7 @@ int acpi_bus_get_status(struct acpi_device *device)
status =
acpi_evaluate_integer(device->handle, "_STA", NULL, &sta);
if (ACPI_FAILURE(status))
- return_VALUE(-ENODEV);
+ return -ENODEV;
STRUCT_TO_INT(device->status) = (int)sta;
}
@@ -119,7 +117,7 @@ int acpi_bus_get_status(struct acpi_device *device)
device->pnp.bus_id,
(u32) STRUCT_TO_INT(device->status)));
- return_VALUE(0);
+ return 0;
}
EXPORT_SYMBOL(acpi_bus_get_status);
@@ -135,11 +133,10 @@ int acpi_bus_get_power(acpi_handle handle, int *state)
struct acpi_device *device = NULL;
unsigned long psc = 0;
- ACPI_FUNCTION_TRACE("acpi_bus_get_power");
result = acpi_bus_get_device(handle, &device);
if (result)
- return_VALUE(result);
+ return result;
*state = ACPI_STATE_UNKNOWN;
@@ -158,12 +155,12 @@ int acpi_bus_get_power(acpi_handle handle, int *state)
status = acpi_evaluate_integer(device->handle, "_PSC",
NULL, &psc);
if (ACPI_FAILURE(status))
- return_VALUE(-ENODEV);
+ return -ENODEV;
device->power.state = (int)psc;
} else if (device->power.flags.power_resources) {
result = acpi_power_get_inferred_state(device);
if (result)
- return_VALUE(result);
+ return result;
}
*state = device->power.state;
@@ -172,7 +169,7 @@ int acpi_bus_get_power(acpi_handle handle, int *state)
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] power state is D%d\n",
device->pnp.bus_id, device->power.state));
- return_VALUE(0);
+ return 0;
}
EXPORT_SYMBOL(acpi_bus_get_power);
@@ -184,21 +181,20 @@ int acpi_bus_set_power(acpi_handle handle, int state)
struct acpi_device *device = NULL;
char object_name[5] = { '_', 'P', 'S', '0' + state, '\0' };
- ACPI_FUNCTION_TRACE("acpi_bus_set_power");
result = acpi_bus_get_device(handle, &device);
if (result)
- return_VALUE(result);
+ return result;
if ((state < ACPI_STATE_D0) || (state > ACPI_STATE_D3))
- return_VALUE(-EINVAL);
+ return -EINVAL;
/* Make sure this is a valid target state */
if (!device->flags.power_manageable) {
printk(KERN_DEBUG "Device `[%s]is not power manageable",
device->kobj.name);
- return_VALUE(-ENODEV);
+ return -ENODEV;
}
/*
* Get device's current power state if it's unknown
@@ -210,18 +206,18 @@ int acpi_bus_set_power(acpi_handle handle, int state)
if (state == device->power.state) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device is already at D%d\n",
state));
- return_VALUE(0);
+ return 0;
}
}
if (!device->power.states[state].flags.valid) {
printk(KERN_WARNING PREFIX "Device does not support D%d\n", state);
- return_VALUE(-ENODEV);
+ return -ENODEV;
}
if (device->parent && (state < device->parent->power.state)) {
printk(KERN_WARNING PREFIX
"Cannot set device to a higher-powered"
" state than parent\n");
- return_VALUE(-ENODEV);
+ return -ENODEV;
}
/*
@@ -271,7 +267,7 @@ int acpi_bus_set_power(acpi_handle handle, int state)
"Device [%s] transitioned to D%d\n",
device->pnp.bus_id, state));
- return_VALUE(result);
+ return result;
}
EXPORT_SYMBOL(acpi_bus_set_power);
@@ -292,18 +288,17 @@ int acpi_bus_generate_event(struct acpi_device *device, u8 type, int data)
struct acpi_bus_event *event = NULL;
unsigned long flags = 0;
- ACPI_FUNCTION_TRACE("acpi_bus_generate_event");
if (!device)
- return_VALUE(-EINVAL);
+ return -EINVAL;
/* drop event on the floor if no one's listening */
if (!event_is_open)
- return_VALUE(0);
+ return 0;
event = kmalloc(sizeof(struct acpi_bus_event), GFP_ATOMIC);
if (!event)
- return_VALUE(-ENOMEM);
+ return -ENOMEM;
strcpy(event->device_class, device->pnp.device_class);
strcpy(event->bus_id, device->pnp.bus_id);
@@ -316,7 +311,7 @@ int acpi_bus_generate_event(struct acpi_device *device, u8 type, int data)
wake_up_interruptible(&acpi_bus_event_queue);
- return_VALUE(0);
+ return 0;
}
EXPORT_SYMBOL(acpi_bus_generate_event);
@@ -328,10 +323,9 @@ int acpi_bus_receive_event(struct acpi_bus_event *event)
DECLARE_WAITQUEUE(wait, current);
- ACPI_FUNCTION_TRACE("acpi_bus_receive_event");
if (!event)
- return_VALUE(-EINVAL);
+ return -EINVAL;
if (list_empty(&acpi_bus_event_list)) {
@@ -345,7 +339,7 @@ int acpi_bus_receive_event(struct acpi_bus_event *event)
set_current_state(TASK_RUNNING);
if (signal_pending(current))
- return_VALUE(-ERESTARTSYS);
+ return -ERESTARTSYS;
}
spin_lock_irqsave(&acpi_bus_event_lock, flags);
@@ -356,13 +350,13 @@ int acpi_bus_receive_event(struct acpi_bus_event *event)
spin_unlock_irqrestore(&acpi_bus_event_lock, flags);
if (!entry)
- return_VALUE(-ENODEV);
+ return -ENODEV;
memcpy(event, entry, sizeof(struct acpi_bus_event));
kfree(entry);
- return_VALUE(0);
+ return 0;
}
EXPORT_SYMBOL(acpi_bus_receive_event);
@@ -377,10 +371,9 @@ acpi_bus_check_device(struct acpi_device *device, int *status_changed)
acpi_status status = 0;
struct acpi_device_status old_status;
- ACPI_FUNCTION_TRACE("acpi_bus_check_device");
if (!device)
- return_VALUE(-EINVAL);
+ return -EINVAL;
if (status_changed)
*status_changed = 0;
@@ -397,15 +390,15 @@ acpi_bus_check_device(struct acpi_device *device, int *status_changed)
if (status_changed)
*status_changed = 1;
}
- return_VALUE(0);
+ return 0;
}
status = acpi_bus_get_status(device);
if (ACPI_FAILURE(status))
- return_VALUE(-ENODEV);
+ return -ENODEV;
if (STRUCT_TO_INT(old_status) == STRUCT_TO_INT(device->status))
- return_VALUE(0);
+ return 0;
if (status_changed)
*status_changed = 1;
@@ -421,7 +414,7 @@ acpi_bus_check_device(struct acpi_device *device, int *status_changed)
/* TBD: Handle device removal */
}
- return_VALUE(0);
+ return 0;
}
static int acpi_bus_check_scope(struct acpi_device *device)
@@ -429,25 +422,24 @@ static int acpi_bus_check_scope(struct acpi_device *device)
int result = 0;
int status_changed = 0;
- ACPI_FUNCTION_TRACE("acpi_bus_check_scope");
if (!device)
- return_VALUE(-EINVAL);
+ return -EINVAL;
/* Status Change? */
result = acpi_bus_check_device(device, &status_changed);
if (result)
- return_VALUE(result);
+ return result;
if (!status_changed)
- return_VALUE(0);
+ return 0;
/*
* TBD: Enumerate child devices within this device's scope and
* run acpi_bus_check_device()'s on them.
*/
- return_VALUE(0);
+ return 0;
}
/**
@@ -460,10 +452,9 @@ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data)
int result = 0;
struct acpi_device *device = NULL;
- ACPI_FUNCTION_TRACE("acpi_bus_notify");
if (acpi_bus_get_device(handle, &device))
- return_VOID;
+ return;
switch (type) {
@@ -538,7 +529,7 @@ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data)
break;
}
- return_VOID;
+ return;
}
/* --------------------------------------------------------------------------
@@ -552,7 +543,6 @@ static int __init acpi_bus_init_irq(void)
struct acpi_object_list arg_list = { 1, &arg };
char *message = NULL;
- ACPI_FUNCTION_TRACE("acpi_bus_init_irq");
/*
* Let the system know what interrupt model we are using by
@@ -571,7 +561,7 @@ static int __init acpi_bus_init_irq(void)
break;
default:
printk(KERN_WARNING PREFIX "Unknown interrupt routing model\n");
- return_VALUE(-ENODEV);
+ return -ENODEV;
}
printk(KERN_INFO PREFIX "Using %s for interrupt routing\n", message);
@@ -581,10 +571,10 @@ static int __init acpi_bus_init_irq(void)
status = acpi_evaluate_object(NULL, "\\_PIC", &arg_list, NULL);
if (ACPI_FAILURE(status) && (status != AE_NOT_FOUND)) {
ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PIC"));
- return_VALUE(-ENODEV);
+ return -ENODEV;
}
- return_VALUE(0);
+ return 0;
}
void __init acpi_early_init(void)
@@ -592,10 +582,9 @@ void __init acpi_early_init(void)
acpi_status status = AE_OK;
struct acpi_buffer buffer = { sizeof(acpi_fadt), &acpi_fadt };
- ACPI_FUNCTION_TRACE("acpi_early_init");
if (acpi_disabled)
- return_VOID;
+ return;
printk(KERN_INFO PREFIX "Core revision %08x\n", ACPI_CA_VERSION);
@@ -655,11 +644,11 @@ void __init acpi_early_init(void)
goto error0;
}
- return_VOID;
+ return;
error0:
disable_acpi();
- return_VOID;
+ return;
}
static int __init acpi_bus_init(void)
@@ -668,7 +657,6 @@ static int __init acpi_bus_init(void)
acpi_status status = AE_OK;
extern acpi_status acpi_os_initialize1(void);
- ACPI_FUNCTION_TRACE("acpi_bus_init");
status = acpi_os_initialize1();
@@ -730,12 +718,12 @@ static int __init acpi_bus_init(void)
*/
acpi_root_dir = proc_mkdir(ACPI_BUS_FILE_ROOT, NULL);
- return_VALUE(0);
+ return 0;
/* Mimic structured exception handling */
error1:
acpi_terminate();
- return_VALUE(-ENODEV);
+ return -ENODEV;
}
decl_subsys(acpi, NULL, NULL);
@@ -744,11 +732,10 @@ static int __init acpi_init(void)
{
int result = 0;
- ACPI_FUNCTION_TRACE("acpi_init");
if (acpi_disabled) {
printk(KERN_INFO PREFIX "Interpreter disabled.\n");
- return_VALUE(-ENODEV);
+ return -ENODEV;
}
firmware_register(&acpi_subsys);
@@ -769,7 +756,7 @@ static int __init acpi_init(void)
} else
disable_acpi();
- return_VALUE(result);
+ return result;
}
subsys_initcall(acpi_init);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-24 13:50:08 +0000