From: Hao Chen <[email protected]>
When pci device reset failed, it does uninit operation and priv->ring
is NULL, it causes accessing NULL pointer error.
Add netdev reset check for hns3_set_tunable() to fix it.
Fixes: 99f6b5fb5f63 ("net: hns3: use bounce buffer when rx page can not be reused")
Signed-off-by: Hao Chen <[email protected]>
Signed-off-by: Guangbin Huang <[email protected]>
---
drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c b/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
index ae30dbe7ef52..49e7b022caaa 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
@@ -1766,9 +1766,6 @@ static int hns3_set_tx_spare_buf_size(struct net_device *netdev,
struct hnae3_handle *h = priv->ae_handle;
int ret;
- if (hns3_nic_resetting(netdev))
- return -EBUSY;
-
h->kinfo.tx_spare_buf_size = data;
ret = hns3_reset_notify(h, HNAE3_DOWN_CLIENT);
@@ -1799,6 +1796,11 @@ static int hns3_set_tunable(struct net_device *netdev,
struct hnae3_handle *h = priv->ae_handle;
int i, ret = 0;
+ if (hns3_nic_resetting(netdev) || !priv->ring) {
+ netdev_err(netdev, "failed to set tunable value, dev resetting!");
+ return -EBUSY;
+ }
+
switch (tuna->id) {
case ETHTOOL_TX_COPYBREAK:
priv->tx_copybreak = *(u32 *)data;
--
2.33.0