net: ethernet: cpsw: fix erroneous condition in error check

[ Upstream commit ce16294fda230c787ce5c35f61b2f80d14d70a72 ]

The error check in cpsw_probe_dt() has an '&&' where an '||' is
meant to be. This causes a NULL pointer dereference when incomplet DT
data is passed to the driver ('phy_id' property for cpsw_emac1
missing).

Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c
index b85ca6b2c19bb18cbdc16edaf63a2251bbf0819d..3b1be52ccf8d0c830dab11c3f020c946f3eeb846 100644 (file)
--- a/drivers/net/ethernet/ti/cpsw.c
+++ b/drivers/net/ethernet/ti/cpsw.c
@@ -1111,7 +1111,7 @@ static int cpsw_probe_dt(struct cpsw_platform_data *data,
                struct platform_device *mdio;
 
                parp = of_get_property(slave_node, "phy_id", &lenp);
-               if ((parp == NULL) && (lenp != (sizeof(void *) * 2))) {
+               if ((parp == NULL) || (lenp != (sizeof(void *) * 2))) {
                        pr_err("Missing slave[%d] phy_id property\n", i);
                        ret = -EINVAL;
                        goto error_ret;