[PATCH net-next 2/5] net: stmmac: selftests: Set RX tail pointer in Flow Control test

[Jose Abreu <Jose.Abreu@synopsys.com>]

We need to set the RX tail pointer so that RX engine starts working
again after finishing the Flow Control test.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>

---
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Jose Abreu <joabreu@synopsys.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: netdev@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c
index dce34c081a1e..2943943bec43 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c
@@ -722,8 +722,14 @@ static int stmmac_test_flowctrl(struct stmmac_priv *priv)
 
 	for (i = 0; i < rx_cnt; i++) {
 		struct stmmac_channel *ch = &priv->channel[i];
+		u32 tail;
 
+		tail = priv->rx_queue[i].dma_rx_phy +
+			(DMA_RX_SIZE * sizeof(struct dma_desc));
+
+		stmmac_set_rx_tail_ptr(priv, priv->ioaddr, tail, i);
 		stmmac_start_rx(priv, priv->ioaddr, i);
+
 		local_bh_disable();
 		napi_reschedule(&ch->rx_napi);
 		local_bh_enable();
-- 
2.7.4