INPUT_REGISTER_DEVIC(9) Input Subsystem INPUT_REGISTER_DEVIC(9)NAMEinput_register_device - register device with input core
SYNOPSIS
int input_register_device(struct input_dev * dev);
ARGUMENTS
dev
device to be registered
DESCRIPTION
This function registers device with input core. The device must be
allocated with input_allocate_device and all it's capabilities set up
before registering. If function fails the device must be freed with
input_free_device. Once device has been successfully registered it can
be unregistered with input_unregister_device; input_free_device should
not be called in this case.
Note that this function is also used to register managed input devices
(ones allocated with devm_input_allocate_device). Such managed input
devices need not be explicitly unregistered or freed, their tear down
is controlled by the devres infrastructure. It is also worth noting
that tear down of managed input devices is internally a 2-step process:
registered managed input device is first unregistered, but stays in
memory and can still handle input_event calls (although events will not
be delivered anywhere). The freeing of managed input device will happen
later, when devres stack is unwound to the point where device
allocation was made.
COPYRIGHTKernel Hackers Manual 3.11 November 2013 INPUT_REGISTER_DEVIC(9)
