scsi: smartpqi: Use scsi_cmd_to_rq() instead of scsi_cmnd.request

Prepare for removal of the request pointer by using scsi_cmd_to_rq()
instead. This patch does not change any functionality.

Link: https://lore.kernel.org/r/20210809230355.8186-43-bvanassche@acm.orgSigned-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/smartpqi/smartpqi_init.c

@@ -5568,7 +5568,7 @@ static inline u16 pqi_get_hw_queue(struct pqi_ctrl_info *ctrl_info,
 {
 	u16 hw_queue;
 
-	hw_queue = blk_mq_unique_tag_to_hwq(blk_mq_unique_tag(scmd->request));
+	hw_queue = blk_mq_unique_tag_to_hwq(blk_mq_unique_tag(scsi_cmd_to_rq(scmd)));
 	if (hw_queue > ctrl_info->max_hw_queue_index)
 		hw_queue = 0;
 
@@ -5577,7 +5577,7 @@ static inline u16 pqi_get_hw_queue(struct pqi_ctrl_info *ctrl_info,
 
 static inline bool pqi_is_bypass_eligible_request(struct scsi_cmnd *scmd)
 {
-	if (blk_rq_is_passthrough(scmd->request))
+	if (blk_rq_is_passthrough(scsi_cmd_to_rq(scmd)))
 		return false;
 
 	return scmd->SCp.this_residual == 0;