linux-kernel - [PATCH v3 6/7] net: moxa: generate random address

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Date:	Mon, 20 Jan 2014 12:13:18 +0100
From:	Jonas Jensen <jonas.jensen@...il.com>
To:	netdev@...r.kernel.org
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	davem@...emloft.net, f.fainelli@...il.com,
	bhutchings@...arflare.com, Jonas Jensen <jonas.jensen@...il.com>
Subject: [PATCH v3 6/7] net: moxa: generate random address

The address register is zero:ed on boot, fill it with a randomly generated
address on probe.

Signed-off-by: Jonas Jensen <jonas.jensen@...il.com>
---

Notes:
    Applies to next-20140120

 drivers/net/ethernet/moxa/moxart_ether.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/net/ethernet/moxa/moxart_ether.c b/drivers/net/ethernet/moxa/moxart_ether.c
index 6df372f..0f25f4dc 100644
--- a/drivers/net/ethernet/moxa/moxart_ether.c
+++ b/drivers/net/ethernet/moxa/moxart_ether.c
@@ -740,6 +740,12 @@ static int moxart_mac_probe(struct platform_device *pdev)
 		goto init_fail;
 	}
 
+	if (!is_valid_ether_addr(ndev->dev_addr)) {
+		eth_hw_addr_random(ndev);
+		netdev_info(ndev, "generated random MAC address %pM\n",
+			    ndev->dev_addr);
+	}
+
 	netdev_dbg(ndev, "%s: IRQ=%d address=%pM\n",
 		   __func__, ndev->irq, ndev->dev_addr);
 
-- 
1.8.2.1

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