From c08248d601e939ababe1642d11be63d0c14c7d1a Mon Sep 17 00:00:00 2001 From: "xypron.glpk@gmx.de" Date: Tue, 16 May 2017 05:07:01 +0200 Subject: [PATCH] net: core: avoid possible NULL pointer dereference Checking if dev is NULL after dereferencing it does not make sense. Signed-off-by: Heinrich Schuchardt Acked-by: Joe Hershberger --- net/eth-uclass.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/net/eth-uclass.c b/net/eth-uclass.c index c3cc3152a2..b659961a5d 100644 --- a/net/eth-uclass.c +++ b/net/eth-uclass.c @@ -181,7 +181,7 @@ int eth_get_dev_index(void) static int eth_write_hwaddr(struct udevice *dev) { - struct eth_pdata *pdata = dev->platdata; + struct eth_pdata *pdata; int ret = 0; if (!dev || !device_active(dev)) @@ -189,6 +189,7 @@ static int eth_write_hwaddr(struct udevice *dev) /* seq is valid since the device is active */ if (eth_get_ops(dev)->write_hwaddr && !eth_mac_skip(dev->seq)) { + pdata = dev->platdata; if (!is_valid_ethaddr(pdata->enetaddr)) { printf("\nError: %s address %pM illegal value\n", dev->name, pdata->enetaddr); -- 2.39.5