usb_speed_string (9) Linux Manual Page
usb_speed_string – Returns human readable-name of the speed.
Synopsis
const char *usb_speed_string(enum usb_device_speed speed);Arguments
speed
-
- The speed to return human-readable name for. If it’s not any of the speeds defined in usb_device_speed enum, string for USB_SPEED_UNKNOWN will be returned.