diff options
| author | Shannon Nelson <snelson@pensando.io> | 2020-11-04 11:56:06 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-11-10 12:37:25 +0100 |
| commit | ac343efb572c55f6a237a5fd37f44efd58fe7194 (patch) | |
| tree | 22902de2dba4504bba53c0cb9a9395509f748554 /drivers | |
| parent | 6ef3bcc25a3e85c1325398c3f605123715814b98 (diff) | |
ionic: check port ptr before use
[ Upstream commit 2bcbf42add911ef63a6d90e92001dc2bcb053e68 ]
Check for corner case of port_init failure before using
the port_info pointer.
Fixes: 4d03e00a2140 ("ionic: Add initial ethtool support")
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Link: https://lore.kernel.org/r/20201104195606.61184-1-snelson@pensando.io
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/pensando/ionic/ionic_ethtool.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_ethtool.c b/drivers/net/ethernet/pensando/ionic/ionic_ethtool.c index 5aacc00962df..b8de3784d976 100644 --- a/drivers/net/ethernet/pensando/ionic/ionic_ethtool.c +++ b/drivers/net/ethernet/pensando/ionic/ionic_ethtool.c @@ -125,6 +125,11 @@ static int ionic_get_link_ksettings(struct net_device *netdev, ethtool_link_ksettings_zero_link_mode(ks, supported); + if (!idev->port_info) { + netdev_err(netdev, "port_info not initialized\n"); + return -EOPNOTSUPP; + } + /* The port_info data is found in a DMA space that the NIC keeps * up-to-date, so there's no need to request the data from the * NIC, we already have it in our memory space. |