Re: detecting when keys are being pressed on a keyboard

Jiri Kosina <[email protected]> Fri, 21 Sep 2007 14:47:16 +0200 (CEST)

Newsgroups	gmane.linux.kernel.input,gmane.linux.usb.devel
Message-ID	<[email protected]>

On Fri, 21 Sep 2007, Oliver Neukum wrote:

> I got the strange case of a keyboard going into autosuspend while a key 
> was being pressed. The key release never arrived and I had to unplug the 
> keyboard to get the key unstuck. Is there a clean way to learn from 
> hid-core.c if a keyboard has keys pressed?

Hi Oliver,

HID doesn't keep any permanent state by itself. If you want to know 
whether a given key is currently pressed or not, you'd have to inspect the 
bitfields inside input_dev*, I am afraid.

-- 
Jiri Kosina