From: Apollon Oikonomopoulos <apollon@noc.grnet.gr>
Date: Tue, 7 Dec 2010 09:43:30 +0000 (+0000)
Subject: x25: decrement netdev reference counts on unload
X-Git-Tag: v2.6.37-rc6~14^2~27
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=171995e5d82dcc92bea37a7d2a2ecc21068a0f19;p=pandora-kernel.git

x25: decrement netdev reference counts on unload

x25 does not decrement the network device reference counts on module unload.
Thus unregistering any pre-existing interface after unloading the x25 module
hangs and results in

 unregister_netdevice: waiting for tap0 to become free. Usage count = 1

This patch decrements the reference counts of all interfaces in x25_link_free,
the way it is already done in x25_link_device_down for NETDEV_DOWN events.

Signed-off-by: Apollon Oikonomopoulos <apollon@noc.grnet.gr>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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