Re: How does rfkill work?

[Johannes Berg <johannes@sipsolutions.net>]

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Larry,

> I'm having trouble getting the radio LED to work on b43legacy. When the LED's
> are registered, I get LED index 0 registered with names of "b43legacy-phy0::tx"
> and "b43legacy-phy0::rx", and LED index 1 with a name as of
> "b43legacy-phy0::radio". I placed printk's at the entrance to
> b43legacy_led_brightness_set(), which is the callback routine. I see a number of
> calls to modify LED index 0, which I assume are due to RX/TX activity, but only
> a single call for LED index 1 when the LED's are still being registered. There
> are no such calls generated when the radio switch is moved.
> 
> I don't see where/how a particular LED is attached to the rfkill event. Could
> you point me to some code that does that?

In theory, that is here:

                snprintf(name, sizeof(name),
                         "b43legacy-%s::radio", wiphy_name(hw->wiphy));
                b43legacy_register_led(dev, &dev->led_radio, name,
                                 b43legacy_rfkill_led_name(dev),
                                 led_index, activelow);

I actually thought this was attached, by default, to the mac80211 radio
trigger, not the rfkill radio trigger.

Can you check the contents of
	/sys/class/leds/b43legacy-...::radio/trigger
please?

johannes

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