centos man page for devm_input_allocate_device

DEVM_INPUT_ALLOCATE_(9) 					  Input Subsystem					   DEVM_INPUT_ALLOCATE_(9)

NAME
       devm_input_allocate_device - allocate managed input device

SYNOPSIS
       struct input_dev * devm_input_allocate_device(struct device * dev);

ARGUMENTS
       dev
	   device owning the input device being created

DESCRIPTION
       Returns prepared struct input_dev or NULL.

       Managed input devices do not need to be explicitly unregistered or freed as it will be done automatically when owner device unbinds from
       its driver (or binding fails). Once managed input device is allocated, it is ready to be set up and registered in the same fashion as
       regular input device. There are no special devm_input_device_[un]register variants, regular ones work with both managed and unmanaged
       devices, should you need them. In most cases however, managed input device need not be explicitly unregistered or freed.

NOTE
       the owner device is set up as parent of input device and users should not override it.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						   DEVM_INPUT_ALLOCATE_(9)