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authorxypron.glpk@gmx.de <xypron.glpk@gmx.de>2016-05-17 23:28:54 +0300
committerDavid S. Miller <davem@davemloft.net>2016-05-19 21:25:30 +0300
commit1740c29a46b30a2f157afc473156f157e599d4c2 (patch)
tree6ab3c251c7bcfb778fd0da38efdfa79f04912c4d /drivers
parent099a728d5819da80ff9fff3df980ea6e89a01e60 (diff)
downloadlinux-1740c29a46b30a2f157afc473156f157e599d4c2.tar.xz
net: ehea: avoid null pointer dereference
ehea_get_port may return NULL. Do not dereference NULL value. Fixes: 8c4877a4128e ("ehea: Use the standard logging functions") Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Acked-by: Thadeu Lima de Souza Cascardo <cascardo@debian.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/ethernet/ibm/ehea/ehea_main.c9
1 files changed, 4 insertions, 5 deletions
diff --git a/drivers/net/ethernet/ibm/ehea/ehea_main.c b/drivers/net/ethernet/ibm/ehea/ehea_main.c
index 2a0dc127df3f..54efa9a5167b 100644
--- a/drivers/net/ethernet/ibm/ehea/ehea_main.c
+++ b/drivers/net/ethernet/ibm/ehea/ehea_main.c
@@ -1169,16 +1169,15 @@ static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
port = ehea_get_port(adapter, portnum);
+ if (!port) {
+ netdev_err(NULL, "unknown portnum %x\n", portnum);
+ return;
+ }
dev = port->netdev;
switch (ec) {
case EHEA_EC_PORTSTATE_CHG: /* port state change */
- if (!port) {
- netdev_err(dev, "unknown portnum %x\n", portnum);
- break;
- }
-
if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
if (!netif_carrier_ok(dev)) {
ret = ehea_sense_port_attr(port);