centos man page for input_mt_get_slot_by_key

INPUT_MT_GET_SLOT_BY(9) 					  Input Subsystem					   INPUT_MT_GET_SLOT_BY(9)

NAME
       input_mt_get_slot_by_key - return slot matching key

SYNOPSIS
       int input_mt_get_slot_by_key(struct input_dev * dev, int key);

ARGUMENTS
       dev
	   input device with allocated MT slots

       key
	   the key of the sought slot

DESCRIPTION
       Returns the slot of the given key, if it exists, otherwise set the key on the first unused slot and return.

       If no available slot can be found, -1 is returned.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						   INPUT_MT_GET_SLOT_BY(9)