diff options
Diffstat (limited to 'drivers/usb/core/hub.c')
| -rw-r--r-- | drivers/usb/core/hub.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index cdbade14899..3341b55f495 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -5077,3 +5077,21 @@ struct usb_device *usb_hub_find_child(struct usb_device *hdev, return hub->ports[port1 - 1]->child; } EXPORT_SYMBOL_GPL(usb_hub_find_child); + +#ifdef CONFIG_ACPI +/** + * usb_get_hub_port_acpi_handle - Get the usb port's acpi handle + * @hdev: USB device belonging to the usb hub + * @port1: port num of the port + * + * Return port's acpi handle if successful, NULL if params are + * invaild. + */ +acpi_handle usb_get_hub_port_acpi_handle(struct usb_device *hdev, + int port1) +{ + struct usb_hub *hub = hdev_to_hub(hdev); + + return DEVICE_ACPI_HANDLE(&hub->ports[port1 - 1]->dev); +} +#endif |