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net: hns3: check NULL pointer before use

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This patch checks ops->set_default_reset_request whether is NULL
before using it in function hns3_slot_reset.

Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Guangbin Huang 2019-09-11 10:40:38 +08:00 committed by David S. Miller
parent 96e65abb77
commit fa17c708ff
1 changed files with 2 additions and 1 deletions
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3
drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
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@ -2006,7 +2006,8 @@ static pci_ers_result_t hns3_slot_reset(struct pci_dev *pdev)
ops = ae_dev->ops;
/* request the reset */
if (ops->reset_event && ops->get_reset_level) {
if (ops->reset_event && ops->get_reset_level &&
ops->set_default_reset_request) {
if (ae_dev->hw_err_reset_req) {
reset_type = ops->get_reset_level(ae_dev,
&ae_dev->hw_err_reset_req);