linux-kernel - [PATCH V2 07/10] net: ethernet: xilinx: Generate random mac if none found

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Message-ID: <1471527804-26175-8-git-send-email-Zubair.Kakakhel@imgtec.com>
Date:	Thu, 18 Aug 2016 14:43:21 +0100
From:	Zubair Lutfullah Kakakhel <Zubair.Kakakhel@...tec.com>
To:	<monstr@...str.eu>, <ralf@...ux-mips.org>, <tglx@...utronix.de>
CC:	<jason@...edaemon.net>, <marc.zyngier@....com>,
	<linux-mips@...ux-mips.org>, <linux-kernel@...r.kernel.org>,
	<netdev@...r.kernel.org>, <Zubair.Kakakhel@...tec.com>
Subject: [PATCH V2 07/10] net: ethernet: xilinx: Generate random mac if none found

At the moment, if the emaclite device doesn't find a mac address
from any source, it simply uses 0x0 with a warning printed.

Instead of using a 0x0 mac address, use a randomly generated one.

Signed-off-by: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@...tec.com>

---
V1 -> V2
New patch
---
 drivers/net/ethernet/xilinx/xilinx_emaclite.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/xilinx/xilinx_emaclite.c b/drivers/net/ethernet/xilinx/xilinx_emaclite.c
index 3cee84a..22e5a5a 100644
--- a/drivers/net/ethernet/xilinx/xilinx_emaclite.c
+++ b/drivers/net/ethernet/xilinx/xilinx_emaclite.c
@@ -1134,8 +1134,10 @@ static int xemaclite_of_probe(struct platform_device *ofdev)
 	if (mac_address)
 		/* Set the MAC address. */
 		memcpy(ndev->dev_addr, mac_address, ETH_ALEN);
-	else
-		dev_warn(dev, "No MAC address found\n");
+	else {
+		dev_warn(dev, "No MAC address found. Generating Random one\n");
+		eth_hw_addr_random(ndev);
+	}
 
 	/* Clear the Tx CSR's in case this is a restart */
 	__raw_writel(0, lp->base_addr + XEL_TSR_OFFSET);
-- 
1.9.1