netdev - [PATCH] net: fec: set mac address unconditionally

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Message-ID: <1474464655-126940-1-git-send-email-g.schenk@eckelmann.de>
Date:   Wed, 21 Sep 2016 15:30:55 +0200
From:   Gavin Schenk <g.schenk@...elmann.de>
To:     <fugang.duan@....com>
CC:     <netdev@...r.kernel.org>, <kernel@...gutronix.de>,
        Gavin Schenk <g.schenk@...elmann.de>
Subject: [PATCH] net: fec: set mac address unconditionally

Fixes: 9638d19e4816 ("net: fec: add netif status check before set mac address")

If the mac address origin is not dt, you can only safe assign a
mac address after "link up" of the device. If the link is down the
clocks are disabled and because of issues assigning registers when
clocks are down the new mac address is discarded on some soc's. This fix
sets the mac address unconditionally in fec_restart(...) and ensures
consistens between fec registers and the network layer.

Signed-off-by: Gavin Schenk <g.schenk@...elmann.de>
---
 drivers/net/ethernet/freescale/fec_main.c | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
index 2a03857cca18..bdabea6cd981 100644
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -903,13 +903,11 @@ fec_restart(struct net_device *ndev)
 	 * enet-mac reset will reset mac address registers too,
 	 * so need to reconfigure it.
 	 */
-	if (fep->quirks & FEC_QUIRK_ENET_MAC) {
-		memcpy(&temp_mac, ndev->dev_addr, ETH_ALEN);
-		writel((__force u32)cpu_to_be32(temp_mac[0]),
-		       fep->hwp + FEC_ADDR_LOW);
-		writel((__force u32)cpu_to_be32(temp_mac[1]),
-		       fep->hwp + FEC_ADDR_HIGH);
-	}
+	memcpy(&temp_mac, ndev->dev_addr, ETH_ALEN);
+	writel((__force u32)cpu_to_be32(temp_mac[0]),
+	       fep->hwp + FEC_ADDR_LOW);
+	writel((__force u32)cpu_to_be32(temp_mac[1]),
+	       fep->hwp + FEC_ADDR_HIGH);

 	/* Clear any outstanding interrupt. */
 	writel(0xffffffff, fep->hwp + FEC_IEVENT);
-- 
1.9.1

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