diff --git a/drivers/infiniband/hw/hfi1/rc.c b/drivers/infiniband/hw/hfi1/rc.c
index 3f21b050714f..fd01a760259f 100644
--- a/drivers/infiniband/hw/hfi1/rc.c
+++ b/drivers/infiniband/hw/hfi1/rc.c
@@ -2219,7 +2219,7 @@ send_last:
 			wc.opcode = IB_WC_RECV;
 		wc.qp = &qp->ibqp;
 		wc.src_qp = qp->remote_qpn;
-		wc.slid = rdma_ah_get_dlid(&qp->remote_ah_attr);
+		wc.slid = rdma_ah_get_dlid(&qp->remote_ah_attr) & U16_MAX;
 		/*
 		 * It seems that IB mandates the presence of an SL in a
 		 * work completion only for the UD transport (see section
diff --git a/drivers/infiniband/hw/hfi1/ruc.c b/drivers/infiniband/hw/hfi1/ruc.c
index d450d4d4bda3..1a3ed6e81b31 100644
--- a/drivers/infiniband/hw/hfi1/ruc.c
+++ b/drivers/infiniband/hw/hfi1/ruc.c
@@ -560,7 +560,7 @@ do_write:
 	wc.byte_len = wqe->length;
 	wc.qp = &qp->ibqp;
 	wc.src_qp = qp->remote_qpn;
-	wc.slid = rdma_ah_get_dlid(&qp->remote_ah_attr);
+	wc.slid = rdma_ah_get_dlid(&qp->remote_ah_attr) & U16_MAX;
 	wc.sl = rdma_ah_get_sl(&qp->remote_ah_attr);
 	wc.port_num = 1;
 	/* Signal completion event if the solicited bit is set. */
diff --git a/drivers/infiniband/hw/hfi1/uc.c b/drivers/infiniband/hw/hfi1/uc.c
index fcd81866e332..1ee80a5f258c 100644
--- a/drivers/infiniband/hw/hfi1/uc.c
+++ b/drivers/infiniband/hw/hfi1/uc.c
@@ -462,7 +462,7 @@ last_imm:
 		wc.status = IB_WC_SUCCESS;
 		wc.qp = &qp->ibqp;
 		wc.src_qp = qp->remote_qpn;
-		wc.slid = rdma_ah_get_dlid(&qp->remote_ah_attr);
+		wc.slid = rdma_ah_get_dlid(&qp->remote_ah_attr) & U16_MAX;
 		/*
 		 * It seems that IB mandates the presence of an SL in a
 		 * work completion only for the UD transport (see section
diff --git a/drivers/infiniband/hw/hfi1/ud.c b/drivers/infiniband/hw/hfi1/ud.c
index 84c7dbec0c28..5260b27f5631 100644
--- a/drivers/infiniband/hw/hfi1/ud.c
+++ b/drivers/infiniband/hw/hfi1/ud.c
@@ -265,8 +265,8 @@ static void ud_loopback(struct rvt_qp *sqp, struct rvt_swqe *swqe)
 	} else {
 		wc.pkey_index = 0;
 	}
-	wc.slid = ppd->lid | (rdma_ah_get_path_bits(ah_attr) &
-				   ((1 << ppd->lmc) - 1));
+	wc.slid = (ppd->lid | (rdma_ah_get_path_bits(ah_attr) &
+				   ((1 << ppd->lmc) - 1))) & U16_MAX;
 	/* Check for loopback when the port lid is not set */
 	if (wc.slid == 0 && sqp->ibqp.qp_type == IB_QPT_GSI)
 		wc.slid = be16_to_cpu(IB_LID_PERMISSIVE);
@@ -1037,7 +1037,7 @@ void hfi1_ud_rcv(struct hfi1_packet *packet)
 	}
 	if (slid_is_permissive)
 		slid = be32_to_cpu(OPA_LID_PERMISSIVE);
-	wc.slid = slid;
+	wc.slid = slid & U16_MAX;
 	wc.sl = sl_from_sc;
 
 	/*