tree 651cbd227fc7cb4252c03f66a07f608a9a31378a
parent 2e5185519450afe948e6418a699799c60ac8597d
author Nikolay Aleksandrov <nikolay@cumulusnetworks.com> 1525344444 +0300
committer David S. Miller <davem@davemloft.net> 1525369254 -0400

net: bridge: avoid duplicate notification on up/down/change netdev events

While handling netdevice events, br_device_event() sometimes uses
br_stp_(disable|enable)_port which unconditionally send a notification,
but then a second notification for the same event is sent at the end of
the br_device_event() function. To avoid sending duplicate notifications
in such cases, check if one has already been sent (i.e.
br_stp_enable/disable_port have been called).
The patch is based on a change by Satish Ashok.

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>