LU-12904 o2ib: ib_destroy_cq() returns void

Kernel destroy CQ flows can't fail and the returned value of
ib_destroy_cq() is not interested in those flows.

kernel-commit: 890ac8d97e6722a9e4a66a0bd836d1b028d075fe

This patch is back-ported from the following one:
Lustre-commit: 7d2ea1e5bbd80f23e6935174c969b34b58048443
Lustre-change: https://review.whamcloud.com/36578

Test-Parameters: trivial
Cray-bug-id: LUS-8042
Signed-off-by: Shaun Tancheff <stancheff@cray.com>
Change-Id: I873bf76a33bd80d5e6de4d1b16a79ff5ea930f3a
Reviewed-on: https://review.whamcloud.com/38489
Reviewed-by: Yang Sheng <ys@whamcloud.com>
Tested-by: jenkins <devops@whamcloud.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>

diff --git a/lnet/klnds/o2iblnd/o2iblnd.c b/lnet/klnds/o2iblnd/o2iblnd.c
index 64f6eef..efcb58b 100644 (file)
--- a/lnet/klnds/o2iblnd/o2iblnd.c
+++ b/lnet/klnds/o2iblnd/o2iblnd.c
@@ -1008,8 +1008,7 @@ void
 kiblnd_destroy_conn(struct kib_conn *conn)
 {
        struct rdma_cm_id *cmid = conn->ibc_cmid;
-       struct kib_peer_ni        *peer_ni = conn->ibc_peer;
-       int                rc;
+       struct kib_peer_ni *peer_ni = conn->ibc_peer;
 
        LASSERT (!in_interrupt());
        LASSERT (atomic_read(&conn->ibc_refcount) == 0);
@@ -1040,11 +1039,8 @@ kiblnd_destroy_conn(struct kib_conn *conn)
        if (cmid != NULL && cmid->qp != NULL)
                rdma_destroy_qp(cmid);
 
-       if (conn->ibc_cq != NULL) {
-               rc = ib_destroy_cq(conn->ibc_cq);
-               if (rc != 0)
-                       CWARN("Error destroying CQ: %d\n", rc);
-       }
+       if (conn->ibc_cq)
+               ib_destroy_cq(conn->ibc_cq);
 
        kiblnd_txlist_done(&conn->ibc_zombie_txs, -ECONNABORTED,
                           LNET_MSG_STATUS_OK);