Re: Notebook Hardware Key for Wireless LAN

[Marcus Woletz <marcus@woletz.de>]

Hi Greg,

Thank you very much for your answer

(and sorry for the inconvenience with the PM.
I was too stupid to send the answer to the list.
I hope it goes now to the right place and right
thread ;-)

Greg KH wrote:
[...]
 > What is the "hardware key"?  And how is it detected by Linux?

The Button in the notebook case that turns on and off
the WLAN interface. In the Samsung X20 it seems that the
button turns the interface on and off without interaction
with the OS.
I really don't know how the button is detected by Linux
(if I knew that I wouldn't waste your time here ;-)

It must be any mechanism in Linux so that hotplug can
generate an event to load the firmware when the WLAN interface
is switched on the first time.
Now I want use this mechanism to generate "on" and "off"
events to do an ifup/ifdown.
Because I don't know how the kernel generates events and sends
it to the hotplug dispatcher and because it seems that really no
events are generated beside the "firmware load" event when
switching on/off the interface I need your help.

 >
 > thanks,
 >
 > greg k-h
 >


bye
Marcus




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