From: Oleksij Rempel <bug-track@fisher-privat.net>
Date: Tue, 5 Jun 2012 18:39:32 +0000 (+0200)
Subject: b43: do not call ieee80211_unregister_hw if we are not registred
X-Git-Tag: v3.5-rc3~22^2~10^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e64add27e1b4874f589e550b4e0ca6715070373f;p=pandora-kernel.git

b43: do not call ieee80211_unregister_hw if we are not registred

this patch fixes kernel Oops on "rmmod b43" if firmware was not loaded:

BUG: unable to handle kernel NULL pointer dereference at 0000000000000088
IP: [<ffffffff8104e988>] drain_workqueue+0x25/0x142
PGD 153ac6067 PUD 153b82067 PMD 0
Oops: 0000 [#1] SMP

Signed-off-by: Oleksij Rempel <bug-track@fisher-privat.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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