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net: hns3: bugfix for rtnl_lock's range in the hclge_reset()

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[ Upstream commit a963052e53 ]

Since hclge_reset_wait() is used to wait for the hardware to complete
the reset, it is not necessary to hold the rtnl_lock during
hclge_reset_wait(). So this patch releases the lock for the duration
of hclge_reset_wait().

Fixes: 6d4fab3953 ("net: hns3: Reset net device with rtnl_lock")
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Huazhong Tan 2018-10-30 21:50:52 +08:00 committed by Greg Kroah-Hartman
parent 733edfd69e
commit 92cb1b096a
1 changed files with 3 additions and 0 deletions
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3
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
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@ -2804,14 +2804,17 @@ static void hclge_reset(struct hclge_dev *hdev)
handle = &hdev->vport[0].nic;
rtnl_lock();
hclge_notify_client(hdev, HNAE3_DOWN_CLIENT);
rtnl_unlock();
if (!hclge_reset_wait(hdev)) {
rtnl_lock();
hclge_notify_client(hdev, HNAE3_UNINIT_CLIENT);
hclge_reset_ae_dev(hdev->ae_dev);
hclge_notify_client(hdev, HNAE3_INIT_CLIENT);
hclge_clear_reset_cause(hdev);
} else {
rtnl_lock();
/* schedule again to check pending resets later */
set_bit(hdev->reset_type, &hdev->reset_pending);
hclge_reset_task_schedule(hdev);