netdev - [PATCH v2 net-next] net: fix dma operation mode config for older versions

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Message-Id: <3b8aeab69d2987db68c74f48a3ac13c7241e1542.1490118934.git.jpinto@synopsys.com>
Date:   Tue, 21 Mar 2017 18:02:36 +0000
From:   Joao Pinto <Joao.Pinto@...opsys.com>
To:     davem@...emloft.net
Cc:     peppe.cavallaro@...com, alexandre.torgue@...com,
        clabbe.montjoie@...il.com, thierry.reding@...il.com,
        sergei.shtylyov@...entembedded.com, netdev@...r.kernel.org,
        Joao Pinto <Joao.Pinto@...opsys.com>
Subject: [PATCH v2 net-next] net: fix dma operation mode config for older versions

This patch fixes a bug introduced in:
commit 6deee2221e11 ("net: stmmac: prepare dma op mode config for multiple
queues")

The dma operation mode configuration routine was wrongly moved to a
function (stmmac_mtl_configuration) that is only executed if the
core version is >= 4.00.

Reported-by: Corentin Labbe <clabbe.montjoie@...il.com>
Signed-off-by: Joao Pinto <jpinto@...opsys.com>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index d3a2151..225a3a3 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -1945,9 +1945,6 @@ static void stmmac_mtl_configuration(struct stmmac_priv *priv)
 	/* Enable MAC RX Queues */
 	if (rx_queues_count > 1 && priv->hw->mac->rx_queue_enable)
 		stmmac_mac_enable_rx_queues(priv);
-
-	/* Set the HW DMA mode and the COE */
-	stmmac_dma_operation_mode(priv);
 }
 
 /**
@@ -2014,6 +2011,9 @@ static int stmmac_hw_setup(struct net_device *dev, bool init_ptp)
 	else
 		stmmac_set_mac(priv->ioaddr, true);
 
+	/* Set the HW DMA mode and the COE */
+	stmmac_dma_operation_mode(priv);
+
 	stmmac_mmc_setup(priv);
 
 	if (init_ptp) {
-- 
2.9.3