diff options
Diffstat (limited to 'drivers/acpi/bus.c')
| -rw-r--r-- | drivers/acpi/bus.c | 25 |
1 files changed, 25 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 -------------------------------------------------------------------------- */ |