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Message-ID: <1483705333.4089.6.camel@sipsolutions.net>
Date: Fri, 06 Jan 2017 13:22:13 +0100
From: Johannes Berg <johannes@...solutions.net>
To: Michał Kępień <kernel@...pniu.pl>,
"David S . Miller" <davem@...emloft.net>
Cc: Михаил Кринкин
<krinkin.m.u@...il.com>, linux-wireless@...r.kernel.org,
netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4] rfkill: Add rfkill-any LED trigger
On Fri, 2017-01-06 at 07:07 +0100, Michał Kępień wrote:
> Add a new "global" (i.e. not per-rfkill device) LED trigger, rfkill-
> any,
> which may be useful on laptops with a single "radio LED" and multiple
> radio transmitters. The trigger is meant to turn a LED on whenever
> there is at least one radio transmitter active and turn it off
> otherwise.
>
> Signed-off-by: Michał Kępień <kernel@...pniu.pl>
> ---
> Changes from v3:
>
> - Revert introducing a new bitfield and instead defer LED event
> firing
> to a work queue to prevent conditional locking and ensure the
> trigger can really be used from any context. This also voids the
> need to take rfkill_global_mutex before calling
> rfkill_set_block()
> in rfkill_resume().
Looks better, but
> +static struct work_struct rfkill_any_work;
At least on module exit you need to cancel this work.
johannes
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