From: Marek Behún <marek.behun@nic.cz>
Date: Tue, 24 Apr 2018 15:21:29 +0000 (+0200)
Subject: net: mvneta: Fix fault when wrong device tree
X-Git-Tag: v2018.07-rc1~155^2~9
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=cf2cf8510a10d954ea46b4a49a7bf9d95cccf4bd;p=platform%2Fkernel%2Fu-boot.git

net: mvneta: Fix fault when wrong device tree

The driver does not check id phy_connect failed (for example on wrong
property name in device tree). In such a case a fault occurs and the
CPU is restarted.

Signed-off-by: Marek Behun <marek.behun@nic.cz>
Reviewed-by: Stefan Roese <sr@denx.de>
Signed-off-by: Stefan Roese <sr@denx.de>
---

diff --git a/drivers/net/mvneta.c b/drivers/net/mvneta.c
index 6eacd61..7036b51 100644
--- a/drivers/net/mvneta.c
+++ b/drivers/net/mvneta.c
@@ -1562,6 +1562,10 @@ static int mvneta_start(struct udevice *dev)
 
 			phydev = phy_connect(pp->bus, pp->phyaddr, dev,
 					     pp->phy_interface);
+			if (!phydev) {
+				printf("phy_connect failed\n");
+				return -ENODEV;
+			}
 
 			pp->phydev = phydev;
 			phy_config(phydev);