4.17-stable review patch. If anyone has any objections, please let me know.
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From: Yunsheng Lin linyunsheng@huawei.com
[ Upstream commit f5be79673fc4c925708c99ec37d77e0a2c3cd30b ]
When hclge_ae_stop is called during resetting, it will cancel the service_task by calling cancel_work_sync, which may cause the service_task to exit without clearing HCLGE_STATE_SERVICE_SCHED bit. If this happens, the service_task will never run again.
This patch fixes this problem by clearing it after calling cancel_work_sync in hclge_ae_stop.
Fixes: 46a3df9f9718 ("net: hns3: Add HNS3 Acceleration Engine & Compatibility Layer Support") Signed-off-by: Yunsheng Lin linyunsheng@huawei.com Signed-off-by: Peng Li lipeng321@huawei.com Signed-off-by: Salil Mehta salil.mehta@huawei.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c | 1 + drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c | 1 + 2 files changed, 2 insertions(+)
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c @@ -3802,6 +3802,7 @@ static void hclge_ae_stop(struct hnae3_h
del_timer_sync(&hdev->service_timer); cancel_work_sync(&hdev->service_task); + clear_bit(HCLGE_STATE_SERVICE_SCHED, &hdev->state);
if (test_bit(HCLGE_STATE_RST_HANDLING, &hdev->state)) { hclge_mac_stop_phy(hdev); --- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c @@ -1323,6 +1323,7 @@ static void hclgevf_ae_stop(struct hnae3 hclgevf_reset_tqp_stats(handle); del_timer_sync(&hdev->service_timer); cancel_work_sync(&hdev->service_task); + clear_bit(HCLGEVF_STATE_SERVICE_SCHED, &hdev->state); hclgevf_update_link_status(hdev, 0); }