From: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Date: Tue, 22 Jul 2008 00:18:18 +0000 (-0300)
Subject: rfkill: fix led-trigger unregister order in error unwind
X-Git-Tag: v2.6.27-rc2~119^2~6^2~32
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=37f55e9d78d1b63047b1b7ae175cdce650547ba8;p=pandora-kernel.git

rfkill: fix led-trigger unregister order in error unwind

rfkill needs to unregister the led trigger AFTER a call to
rfkill_remove_switch(), otherwise it will not update the LED state,
possibly leaving it ON when it should be OFF.

To make led-trigger unregistering safer, guard against unregistering a
trigger twice, and also against issuing trigger events to a led trigger
that was unregistered.  This makes the error unwind paths more resilient.

Refer to "rfkill: Register LED triggers before registering switch".

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
Cc: Michael Buesch <mb@bu3sch.de>
Cc: Dmitry Baryshkov <dbaryshkov@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---

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