Re: [PATCH] rfkill: create useful userspace interface

[Johannes Berg <johannes@sipsolutions.net>]

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On Mon, 2009-06-01 at 09:28 -0300, Henrique de Moraes Holschuh wrote:
> On Mon, 01 Jun 2009, Alan Jenkins wrote:
> >> See, Henrique says that the use case is Thinkpads which store the
> >> previous state in the BIOS. But that matters to you only if you use a
> >> mixture of operation systems, which we don't have to support.
> 
> Well, if you do all in userspace, how do you propose to avoid the usual race
> conditions of the sort "radio starts on, but it should have started off",
> etc?  You'd have to kick the radios off on rfkill module load for safety,
> and that will also cause nastyness (it kicks my built-in wlan
> (eeepcargh)/bluetooth(most)/wwan(most) off bus, then hotplugs it again!).

Have you bothered reading the code? If you turn things off with
CHANGE_ALL that applies to hot-plugged devices too.

johannes

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