[PATCH] RDMA/nes: remove unnecessary RCU lock

[PATCH] RDMA/nes: remove unnecessary RCU lock

[roy.qing.li-Re5JQEeQqe8AvxtiuMwx3w]

From: Li RongQing <roy.qing.li-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>

The neigh returned from neigh_lookup has its ref added, not need
to hold RCU lock

and move neigh_release to avoid to check if neigh is NULL again.

Signed-off-by: Li RongQing <roy.qing.li-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
---
 drivers/infiniband/hw/nes/nes_cm.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/drivers/infiniband/hw/nes/nes_cm.c b/drivers/infiniband/hw/nes/nes_cm.c
index 6f09a72..d9e3b4b 100644
--- a/drivers/infiniband/hw/nes/nes_cm.c
+++ b/drivers/infiniband/hw/nes/nes_cm.c
@@ -1510,7 +1510,6 @@ static int nes_addr_resolve_neigh(struct nes_vnic *nesvnic, u32 dst_ip, int arpi
 
 	neigh = neigh_lookup(&arp_tbl, &rt->rt_gateway, netdev);
 
-	rcu_read_lock();
 	if (neigh) {
 		if (neigh->nud_state & NUD_VALID) {
 			nes_debug(NES_DBG_CM, "Neighbor MAC address for 0x%08X"
@@ -1535,12 +1534,9 @@ static int nes_addr_resolve_neigh(struct nes_vnic *nesvnic, u32 dst_ip, int arpi
 		} else {
 			neigh_event_send(neigh, NULL);
 		}
-	}
 out:
-	rcu_read_unlock();
-
-	if (neigh)
 		neigh_release(neigh);
+	}
 
 	ip_rt_put(rt);
 	return rc;
-- 
2.1.0

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