diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/acpi/bus.c | 25 | ||||
| -rw-r--r-- | drivers/acpi/thermal.c | 11 |
2 files changed, 36 insertions, 0 deletions
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index 1b4cf984b08..8df325dafe0 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -122,6 +122,31 @@ int acpi_bus_get_status(struct acpi_device *device) EXPORT_SYMBOL(acpi_bus_get_status); +void acpi_bus_private_data_handler(acpi_handle handle, + u32 function, void *context) +{ + return; +} +EXPORT_SYMBOL(acpi_bus_private_data_handler); + +int acpi_bus_get_private_data(acpi_handle handle, void **data) +{ + acpi_status status = AE_OK; + + if (!*data) + return -EINVAL; + + status = acpi_get_data(handle, acpi_bus_private_data_handler, data); + if (ACPI_FAILURE(status) || !*data) { + ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No context for object [%p]\n", + handle)); + return -ENODEV; + } + + return 0; +} +EXPORT_SYMBOL(acpi_bus_get_private_data); + /* -------------------------------------------------------------------------- Power Management -------------------------------------------------------------------------- */ diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c index d317da5c6e9..74003635572 100644 --- a/drivers/acpi/thermal.c +++ b/drivers/acpi/thermal.c @@ -1101,6 +1101,7 @@ static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz) { int trips = 0; int result; + acpi_status status; int i; if (tz->trips.critical.flags.valid) @@ -1129,6 +1130,15 @@ static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz) if (result) return result; + status = acpi_attach_data(tz->device->handle, + acpi_bus_private_data_handler, + tz->thermal_zone); + if (ACPI_FAILURE(status)) { + ACPI_DEBUG_PRINT((ACPI_DB_ERROR, + "Error attaching device data\n")); + return -ENODEV; + } + tz->tz_enabled = 1; printk(KERN_INFO PREFIX "%s is registered as thermal_zone%d\n", @@ -1142,6 +1152,7 @@ static void acpi_thermal_unregister_thermal_zone(struct acpi_thermal *tz) sysfs_remove_link(&tz->thermal_zone->device.kobj, "device"); thermal_zone_device_unregister(tz->thermal_zone); tz->thermal_zone = NULL; + acpi_detach_data(tz->device->handle, acpi_bus_private_data_handler); } |