[PATCH 2/6] nvme: add nvme_crd_msecs helper

[Sagi Grimberg <sagi@grimberg.me>]

Hide the details of extracting the crd value. We'll need it from other
call-sites.

Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
---
 drivers/nvme/host/core.c |  8 +-------
 drivers/nvme/host/nvme.h | 10 ++++++++++
 2 files changed, 11 insertions(+), 7 deletions(-)

diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 453c1f0b2dd0..a49a86f96dd6 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -321,15 +321,9 @@ static blk_status_t nvme_error_status(u16 status)
 
 static void nvme_retry_req(struct request *req)
 {
-	unsigned long delay = 0;
-	u16 crd;
+	unsigned long delay = nvme_crd_msecs(nvme_req(req));
 	struct nvme_ns *ns = req->q->queuedata;
 
-	/* The mask and shift result must be <= 3 */
-	crd = (nvme_req(req)->status & NVME_STATUS_CRD) >> 11;
-	if (crd)
-		delay = nvme_req(req)->ctrl->crdt[crd - 1] * 100;
-
 	nvme_req(req)->retries++;
 	if (ns)
 		atomic_long_inc(&ns->retries);
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
index 824651cc898d..6d8f6c541a61 100644
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -921,6 +921,16 @@ static inline enum req_op nvme_req_op(struct nvme_command *cmd)
 	return nvme_is_write(cmd) ? REQ_OP_DRV_OUT : REQ_OP_DRV_IN;
 }
 
+static inline unsigned long nvme_crd_msecs(struct nvme_request *req)
+{
+	/* The mask and shift result must be <= 3 */
+	u16 crd = (req->status & NVME_STATUS_CRD) >> 11;
+
+	if (!crd)
+		return 0;
+	return req->ctrl->crdt[crd - 1] * 100;
+}
+
 #define NVME_QID_ANY -1
 void nvme_init_request(struct request *req, struct nvme_command *cmd);
 void nvme_cleanup_cmd(struct request *req);
-- 
2.43.0