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rtnl_link_af_unregister: fix locking 

rtnl_link_af_unregister() attempts to write-lock info_lock twice
instead of releasing it before returning.  It also will return with
info_lock write-locked if passed a NULL ops.

Signed-off-by: Thomas Graf <tgraf@suug.ch>
This commit is contained in:
Nathan Lynch 2013-04-29 16:29:46 -05:00 committed by Thomas Graf
parent 183052d047
commit 8983fa9914
1 changed files with 2 additions and 2 deletions
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4
lib/route/link/api.c
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@ -326,7 +326,7 @@ int rtnl_link_af_unregister(struct rtnl_link_af_ops *ops)
int err = -NLE_INVAL;
if (!ops)
goto errout;
return err;
nl_write_lock(&info_lock);
if (!af_ops[ops->ao_family]) {
@ -345,7 +345,7 @@ int rtnl_link_af_unregister(struct rtnl_link_af_ops *ops)
ops->ao_family);
errout:
nl_write_lock(&info_lock);
nl_write_unlock(&info_lock);
return err;
}