[PATCH] nvme: add a helper to initialize connect_q

[Chaitanya Kulkarni]

Add and use helper to remove duplicate code for fabrics connect_q
initialization and error handling for all the transports.

Signed-off-by: Chaitanya Kulkarni <kch at nvidia.com>
---
 drivers/nvme/host/fc.c     | 6 ++----
 drivers/nvme/host/nvme.h   | 8 ++++++++
 drivers/nvme/host/rdma.c   | 6 ++----
 drivers/nvme/host/tcp.c    | 6 ++----
 drivers/nvme/target/loop.c | 6 ++----
 5 files changed, 16 insertions(+), 16 deletions(-)

diff --git a/drivers/nvme/host/fc.c b/drivers/nvme/host/fc.c
index 71b3108c22f0..23c896a138a3 100644
--- a/drivers/nvme/host/fc.c
+++ b/drivers/nvme/host/fc.c
@@ -2916,11 +2916,9 @@ nvme_fc_create_io_queues(struct nvme_fc_ctrl *ctrl)
 
 	ctrl->ctrl.tagset = &ctrl->tag_set;
 
-	ctrl->ctrl.connect_q = blk_mq_init_queue(&ctrl->tag_set);
-	if (IS_ERR(ctrl->ctrl.connect_q)) {
-		ret = PTR_ERR(ctrl->ctrl.connect_q);
+	ret = nvme_ctrl_init_connect_q(&(ctrl->ctrl));
+	if (ret)
 		goto out_free_tag_set;
-	}
 
 	ret = nvme_fc_create_hw_io_queues(ctrl, ctrl->ctrl.sqsize + 1);
 	if (ret)
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
index a162f6c6da6e..f8658f984d64 100644
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -894,6 +894,14 @@ static inline int nvme_update_zone_info(struct nvme_ns *ns, unsigned lbaf)
 }
 #endif
 
+static inline int nvme_ctrl_init_connect_q(struct nvme_ctrl *ctrl)
+{
+	ctrl->connect_q = blk_mq_init_queue(ctrl->tagset);
+	if (IS_ERR(ctrl->connect_q))
+		return PTR_ERR(ctrl->connect_q);
+	return 0;
+}
+
 static inline struct nvme_ns *nvme_get_ns_from_dev(struct device *dev)
 {
 	return dev_to_disk(dev)->private_data;
diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c
index 850f84d204d0..0bf2ce0b1dd6 100644
--- a/drivers/nvme/host/rdma.c
+++ b/drivers/nvme/host/rdma.c
@@ -978,11 +978,9 @@ static int nvme_rdma_configure_io_queues(struct nvme_rdma_ctrl *ctrl, bool new)
 			goto out_free_io_queues;
 		}
 
-		ctrl->ctrl.connect_q = blk_mq_init_queue(&ctrl->tag_set);
-		if (IS_ERR(ctrl->ctrl.connect_q)) {
-			ret = PTR_ERR(ctrl->ctrl.connect_q);
+		ret = nvme_ctrl_init_connect_q(&(ctrl->ctrl));
+		if (ret)
 			goto out_free_tag_set;
-		}
 	}
 
 	ret = nvme_rdma_start_io_queues(ctrl);
diff --git a/drivers/nvme/host/tcp.c b/drivers/nvme/host/tcp.c
index 4ceb28675fdf..6cbcc8b4daaf 100644
--- a/drivers/nvme/host/tcp.c
+++ b/drivers/nvme/host/tcp.c
@@ -1825,11 +1825,9 @@ static int nvme_tcp_configure_io_queues(struct nvme_ctrl *ctrl, bool new)
 			goto out_free_io_queues;
 		}
 
-		ctrl->connect_q = blk_mq_init_queue(ctrl->tagset);
-		if (IS_ERR(ctrl->connect_q)) {
-			ret = PTR_ERR(ctrl->connect_q);
+		ret = nvme_ctrl_init_connect_q(ctrl);
+		if (ret)
 			goto out_free_tag_set;
-		}
 	}
 
 	ret = nvme_tcp_start_io_queues(ctrl);
diff --git a/drivers/nvme/target/loop.c b/drivers/nvme/target/loop.c
index eb1094254c82..23f9d6f88804 100644
--- a/drivers/nvme/target/loop.c
+++ b/drivers/nvme/target/loop.c
@@ -543,11 +543,9 @@ static int nvme_loop_create_io_queues(struct nvme_loop_ctrl *ctrl)
 	if (ret)
 		goto out_destroy_queues;
 
-	ctrl->ctrl.connect_q = blk_mq_init_queue(&ctrl->tag_set);
-	if (IS_ERR(ctrl->ctrl.connect_q)) {
-		ret = PTR_ERR(ctrl->ctrl.connect_q);
+	ret = nvme_ctrl_init_connect_q(&(ctrl->ctrl));
+	if (ret)
 		goto out_free_tagset;
-	}
 
 	ret = nvme_loop_connect_io_queues(ctrl);
 	if (ret)
-- 
2.29.0