USB_INTERFACE_CLAIME(9) Host-Side Data Types and Macro USB_INTERFACE_CLAIME(9)NAMEusb_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.
COPYRIGHTKernel Hackers Manual 2.6. November 2013 USB_INTERFACE_CLAIME(9)