netfilter: nfnetlink: don't probe module if it exists
nfnetlink_bind request_module()s all the time as nfnetlink_get_subsys() shifts the argument by 8 to obtain the subsys id. So using type instead of type << 8 always returns NULL. Fixes: 03292745 ("netlink: add nlk->netlink_bind hook for module auto-loading") Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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