From: Jiri Slaby <jslaby@suse.cz>
Date: Wed, 20 Apr 2011 08:43:15 +0000 (+0200)
Subject: Char: moxa, fix locking in moxa_write
X-Git-Tag: v3.0-rc1~338^2~19
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0ad7c9af3e1cbb97082062266705d6cb5fb207ee;p=pandora-kernel.git

Char: moxa, fix locking in moxa_write

moxa_write can be called from atomic context with irqs disabled (from
ppp_async_push). Don't enable interrupts by spin_unlock_bh as this
might cause deadlocks in the ppp layer.

Instead, use irqsave/irqrestore spin_lock functions.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

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