[PATCH v2 3/3] nvme: use helper nvme_ctrl_state in nvme_keep_alive_finish function

[Nilay Shroff <nilay@linux.ibm.com>]

We no more need acquiring ctrl->lock for accessing the NVMe controller
state and instead we can now use the helper nvme_ctrl_state. So replace
the ctrl->lock from nvme_keep_alive_finish function with nvme_ctrl_state
call.

Signed-off-by: Nilay Shroff <nilay@linux.ibm.com>
---
 drivers/nvme/host/core.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 736adbf65ef5..5a690cf16e5e 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -1296,10 +1296,10 @@ static void nvme_keep_alive_finish(struct request *rq,
 				blk_status_t status,
 				struct nvme_ctrl *ctrl)
 {
-	unsigned long flags;
 	bool startka = false;
 	unsigned long rtt = jiffies - (rq->deadline - rq->timeout);
 	unsigned long delay = nvme_keep_alive_work_period(ctrl);
+	enum nvme_ctrl_state state = nvme_ctrl_state(ctrl);
 
 	/*
 	 * Subtract off the keepalive RTT so nvme_keep_alive_work runs
@@ -1322,11 +1322,8 @@ static void nvme_keep_alive_finish(struct request *rq,
 
 	ctrl->ka_last_check_time = jiffies;
 	ctrl->comp_seen = false;
-	spin_lock_irqsave(&ctrl->lock, flags);
-	if (ctrl->state == NVME_CTRL_LIVE ||
-	    ctrl->state == NVME_CTRL_CONNECTING)
+	if (state == NVME_CTRL_LIVE || state == NVME_CTRL_CONNECTING)
 		startka = true;
-	spin_unlock_irqrestore(&ctrl->lock, flags);
 	if (startka)
 		queue_delayed_work(nvme_wq, &ctrl->ka_work, delay);
 }
-- 
2.45.2