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

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[ Upstream commit 29118ab962 ]

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

Fixes: 6988eb2a9b ("net: hns3: Add support to reset the enet/ring mgmt layer")
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 21:50:53 +08:00 committed by Greg Kroah-Hartman
parent 0987d5a67b
commit 733edfd69e
1 changed files with 5 additions and 0 deletions
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5
drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
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@ -1065,6 +1065,8 @@ static int hclgevf_reset(struct hclgevf_dev *hdev)
/* bring down the nic to stop any ongoing TX/RX */
hclgevf_notify_client(hdev, HNAE3_DOWN_CLIENT);
rtnl_unlock();
/* check if VF could successfully fetch the hardware reset completion
* status from the hardware
*/
@ -1076,12 +1078,15 @@ static int hclgevf_reset(struct hclgevf_dev *hdev)
ret);
dev_warn(&hdev->pdev->dev, "VF reset failed, disabling VF!\n");
rtnl_lock();
hclgevf_notify_client(hdev, HNAE3_UNINIT_CLIENT);
rtnl_unlock();
return ret;
}
rtnl_lock();
/* now, re-initialize the nic client and ae device*/
ret = hclgevf_reset_stack(hdev);
if (ret)