usb_interface_claimed(9) suse man page | unix.com

USB_INTERFACE_CLAIME(9) 				  Host-Side Data Types and Macro				   USB_INTERFACE_CLAIME(9)

NAME
       usb_interface_claimed - returns true iff an interface is claimed

SYNOPSIS
       int usb_interface_claimed(struct usb_interface * iface);

ARGUMENTS
       iface
	   the interface being checked

DESCRIPTION
       Returns true (nonzero) iff the interface is claimed, else false (zero). Callers must own the driver model's usb bus readlock. So driver
       probe entries don't need extra locking, but other call contexts may need to explicitly claim that lock.

COPYRIGHT
Kernel Hackers Manual 2.6.					     July 2010						   USB_INTERFACE_CLAIME(9)