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IPoIB: Fix hang in ipoib_flush_paths()

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ipoib_flush_paths() can hang during an SM up/down loop: if
path_rec_start() fails (for instance, because there is no sm_ah), the
path is still added to the path list by neigh_add_path().  Then,
ipoib_flush_paths() will wait for path->done, but it will never
complete because the request was not issued at all.  Fix this by
completing path->done if issuing the query fails.

This fixes <https://bugs.openfabrics.org/show_bug.cgi?id=1329>.

Signed-off-by: Yossi Etigin <yosefe@voltaire.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Yossi Etigin 2008-11-12 10:24:38 -08:00 committed by Roland Dreier
parent fe25c56190
commit 93a3ab939b
1 changed files with 1 additions and 0 deletions
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drivers/infiniband/ulp/ipoib/ipoib_main.c
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@ -547,6 +547,7 @@ static int path_rec_start(struct net_device *dev,
if (path->query_id < 0) {
ipoib_warn(priv, "ib_sa_path_rec_get failed: %d\n", path->query_id);
path->query = NULL;
complete(&path->done);
return path->query_id;
}