tree f069b5c04468689ec87ef6cdf0e97054ae3dcb41
parent 437a3ae1d0b42197928d52e1108bc2fdc14d23fd
author Salam Noureddine <noureddine@aristanetworks.com> 1380487182 -0700
committer David S. Miller <davem@davemloft.net> 1380605336 -0700

ipv4 igmp: use in_dev_put in timer handlers instead of __in_dev_put

It is possible for the timer handlers to run after the call to
ip_mc_down so use in_dev_put instead of __in_dev_put in the handler
function in order to do proper cleanup when the refcnt reaches 0.
Otherwise, the refcnt can reach zero without the in_device being
destroyed and we end up leaking a reference to the net_device and
see messages like the following,

unregister_netdevice: waiting for eth0 to become free. Usage count = 1

Tested on linux-3.4.43.

Signed-off-by: Salam Noureddine <noureddine@aristanetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>