From: Shannon Nelson <snelson@pensando.io>
To: netdev@vger.kernel.org, davem@davemloft.net, kuba@kernel.org
Cc: Shannon Nelson <snelson@pensando.io>
Subject: [PATCH net] ionic: check port ptr before use
Date: Wed, 4 Nov 2020 11:56:06 -0800 [thread overview]
Message-ID: <20201104195606.61184-1-snelson@pensando.io> (raw)
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>
---
drivers/net/ethernet/pensando/ionic/ionic_ethtool.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_ethtool.c b/drivers/net/ethernet/pensando/ionic/ionic_ethtool.c
index ed9808fc743b..35c72d4a78b3 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_ethtool.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_ethtool.c
@@ -126,6 +126,11 @@ 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.
--
2.17.1
next reply other threads:[~2020-11-04 19:56 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-04 19:56 Shannon Nelson [this message]
2020-11-05 18:01 ` [PATCH net] ionic: check port ptr before use Jakub Kicinski
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