diff options
Diffstat (limited to 'drivers/acpi/scan.c')
-rw-r--r-- | drivers/acpi/scan.c | 109 |
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); |