centos man page for usb_state_string

USB_STATE_STRING(9)					      Kernel Mode Gadget API					       USB_STATE_STRING(9)

NAME
       usb_state_string - Returns human readable name for the state.

SYNOPSIS
       const char * usb_state_string(enum usb_device_state state);

ARGUMENTS
       state
	   The state to return a human-readable name for. If it's not any of the states devices in usb_device_state_string enum, the string
	   UNKNOWN will be returned.

AUTHOR
       David Brownell <dbrownell@users.sourceforge.net>
	   Author.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						       USB_STATE_STRING(9)