netdev - [PATCH] net/cadence/macb: fix kernel Oops if no PHY were discovered during probe

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Date:	Sat, 24 Aug 2013 21:21:05 +0200
From:	Boris BREZILLON <b.brezillon@...rkiz.com>
To:	Nicolas Ferre <nicolas.ferre@...el.com>
Cc:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	Boris BREZILLON <b.brezillon@...rkiz.com>
Subject: [PATCH] net/cadence/macb: fix kernel Oops if no PHY were discovered during probe

Test the presence of a PHY device before printing attached PHY
informations.

Signed-off-by: Boris BREZILLON <b.brezillon@...rkiz.com>
---
 drivers/net/ethernet/cadence/macb.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/cadence/macb.c b/drivers/net/ethernet/cadence/macb.c
index e866608..fd3b67f 100644
--- a/drivers/net/ethernet/cadence/macb.c
+++ b/drivers/net/ethernet/cadence/macb.c
@@ -1868,8 +1868,10 @@ static int __init macb_probe(struct platform_device *pdev)
 		    dev->irq, dev->dev_addr);
 
 	phydev = bp->phy_dev;
-	netdev_info(dev, "attached PHY driver [%s] (mii_bus:phy_addr=%s, irq=%d)\n",
-		    phydev->drv->name, dev_name(&phydev->dev), phydev->irq);
+	if (phydev)
+		netdev_info(dev, "attached PHY driver [%s] (mii_bus:phy_addr=%s, irq=%d)\n",
+			    phydev->drv->name, dev_name(&phydev->dev),
+			    phydev->irq);
 
 	return 0;
 
-- 
1.7.9.5

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