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

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Message-Id: <9e6d4447eeefa45d7e61e6bb9e4f602981c85c23.1567755423.git.joabreu@synopsys.com>
Date:   Fri,  6 Sep 2019 09:41:14 +0200
From:   Jose Abreu <Jose.Abreu@...opsys.com>
To:     netdev@...r.kernel.org
Cc:     Joao Pinto <Joao.Pinto@...opsys.com>,
        Jose Abreu <Jose.Abreu@...opsys.com>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        "David S. Miller" <davem@...emloft.net>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH net-next 2/5] net: stmmac: selftests: Set RX tail pointer in Flow Control test

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@...opsys.com>

---
Cc: Giuseppe Cavallaro <peppe.cavallaro@...com>
Cc: Alexandre Torgue <alexandre.torgue@...com>
Cc: Jose Abreu <joabreu@...opsys.com>
Cc: "David S. Miller" <davem@...emloft.net>
Cc: Maxime Coquelin <mcoquelin.stm32@...il.com>
Cc: netdev@...r.kernel.org
Cc: linux-arm-kernel@...ts.infradead.org
Cc: linux-kernel@...r.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