netdev - Re: [RFC] rfkill - Add support for input key to control wireless radio

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Message-Id: <200612032305.16567.IvDoorn@gmail.com>
Date:	Sun, 3 Dec 2006 23:05:15 +0100
From:	Ivo van Doorn <ivdoorn@...il.com>
To:	Arjan van de Ven <arjan@...radead.org>
Cc:	Dmitry Torokhov <dtor@...ightbb.com>, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org, John Linville <linville@...driver.com>,
	Jiri Benc <jbenc@...e.cz>,
	Lennart Poettering <lennart@...ttering.net>,
	Johannes Berg <johannes@...solutions.net>,
	Larry Finger <Larry.Finger@...inger.net>
Subject: Re: [RFC] rfkill - Add support for input key to control wireless radio

On Sunday 03 December 2006 20:20, Arjan van de Ven wrote:
> this open_count thing smells fishy to me; what are the locking rules for
> it? What guarantees that the readers of it don't get the value changed
> underneath them between looking at the value and doing whatever action
> depends on it's value ?

Good point, a race condition could indeed occur in the only reader
that sends the signal to the userspace through the input device.
I'll fix this immediately.

Thanks,

Ivo
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