From: Jiri Pirko <jiri@resnulli.us>
Date: Thu, 26 Jun 2014 07:58:25 +0000 (+0200)
Subject: rtnetlink: allow to register ops without ops->setup set
X-Git-Tag: omap-for-v3.17/fixes-against-rc2~149^2~248
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b0ab2fabb5b91da99c189db02e91ae10bc8355c5;p=pandora-kernel.git

rtnetlink: allow to register ops without ops->setup set

So far, it is assumed that ops->setup is filled up. But there might be
case that ops might make sense even without ->setup. In that case,
forbid to newlink and dellink.

This allows to register simple rtnl link ops containing only ->kind.
That allows consistent way of passing device kind (either device-kind or
slave-kind) to userspace.

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
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