Re: Role of close() in struct input_dev

[James S. <jsi...@tr...>]

> Now the question is: What is the role of input_dev::close/open ?
> Are they meant as "init/deinit the device" or "establish/break connection
> with processes" (or a mix of both) ?

If you look at input.c connect and disconnect are used by input_register
and input_unregister which are called when you insmod the device or at
boot time. So they are used to setup the hardware and the data structs for
the device. Now open and close are called input_open_device and
input_close_device. Now if look at what calls input_[opne/close]_device
they are all some kind of userland interface i.e evdev, mousedev, joydev.c
etc. 

P.S

   Lets coordinate our work. I'm working on power management right now
which also changes things like input.c. I have pretty much figured out pm
handling per device. The problem is general powering down a device. How to
handle things like a power power that suspends a PDA. This is much
trickier.