From: Huazhong Tan <tanhuazhong@huawei.com>
Date: Tue, 28 May 2019 17:02:55 +0800
Subject: net: hns3: use HCLGE_STATE_ROCE_REGISTERED to indicate PF ROCE client
 has registered
Patch-mainline: v5.3-rc1
Git-commit: 2a0bfc36183cb4eb5f1212faafbc93876a9a2088
References: bsc#1104353 FATE#326415

When PF ROCE client's init_instance() succeeds, it means this client
has been registered successfully, so we use HCLGE_STATE_ROCE_REGISTERED
to indicate that. And before calling PF ROCE client's uninit_instance(),
we clear this state.

So any operation of the ROCE client from HCLGE is not allowed if this
state is not set.

Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c |    8 +++++++-
 drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h |    1 +
 2 files changed, 8 insertions(+), 1 deletion(-)

--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
@@ -2586,7 +2586,8 @@ static int hclge_notify_roce_client(stru
 	int ret = 0;
 	u16 i;
 
-	if (!client)
+	if (!test_bit(HCLGE_STATE_ROCE_REGISTERED, &hdev->state) ||
+	    !client)
 		return 0;
 
 	if (!client->ops->reset_notify)
@@ -7895,6 +7896,8 @@ static int hclge_init_client_instance(st
 				if (ret)
 					goto clear_roce;
 
+				set_bit(HCLGE_STATE_ROCE_REGISTERED,
+					&hdev->state);
 				hnae3_set_client_init_flag(hdev->roce_client,
 							   ae_dev, 1);
 			}
@@ -7926,6 +7929,8 @@ static int hclge_init_client_instance(st
 				if (ret)
 					goto clear_roce;
 
+				set_bit(HCLGE_STATE_ROCE_REGISTERED,
+					&hdev->state);
 				hnae3_set_client_init_flag(client, ae_dev, 1);
 			}
 
@@ -7957,6 +7962,7 @@ static void hclge_uninit_client_instance
 	for (i = 0; i < hdev->num_vmdq_vport + 1; i++) {
 		vport = &hdev->vport[i];
 		if (hdev->roce_client) {
+			clear_bit(HCLGE_STATE_ROCE_REGISTERED, &hdev->state);
 			hdev->roce_client->ops->uninit_instance(&vport->roce,
 								0);
 			hdev->roce_client = NULL;
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h
@@ -200,6 +200,7 @@ enum HCLGE_DEV_STATE {
 	HCLGE_STATE_DISABLED,
 	HCLGE_STATE_REMOVING,
 	HCLGE_STATE_NIC_REGISTERED,
+	HCLGE_STATE_ROCE_REGISTERED,
 	HCLGE_STATE_SERVICE_INITED,
 	HCLGE_STATE_SERVICE_SCHED,
 	HCLGE_STATE_RST_SERVICE_SCHED,