From: Karl Hiramoto <karl@hiramoto.org>
Date: Thu, 8 Jul 2010 20:55:30 +0000 (+0000)
Subject: atm: propagate signal changes via notifier
X-Git-Tag: v2.6.36-rc1~571^2~297
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7313bb8f3dd6e28bcf9c42adfd54a5cf9a4949e0;p=pandora-kernel.git

atm: propagate signal changes via notifier

Add notifier chain for changes in atm_dev.

Clients like br2684 will call register_atmdevice_notifier() to be notified of
changes. Drivers will call atm_dev_signal_change() to notify clients like
br2684 of the change.

On DSL and ATM devices it's usefull to have a know if you have a carrier
signal. netdevice LOWER_UP changes can be propagated to userspace via netlink
monitor.

Signed-off-by: Karl Hiramoto <karl@hiramoto.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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