scsi: mpt3sas: 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/20210809230355.8186-31-bvanassche@acm.orgSigned-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/mpt3sas/mpt3sas_base.c

@@ -3848,7 +3848,7 @@ _base_get_msix_index(struct MPT3SAS_ADAPTER *ioc,
 		    &ioc->total_io_cnt), ioc->reply_queue_count) : 0;
 
 	if (scmd && ioc->shost->nr_hw_queues > 1) {
-		u32 tag = blk_mq_unique_tag(scmd->request);
+		u32 tag = blk_mq_unique_tag(scsi_cmd_to_rq(scmd));
 
 		return blk_mq_unique_tag_to_hwq(tag) +
 			ioc->high_iops_queues;
@@ -3932,7 +3932,7 @@ mpt3sas_base_get_smid_scsiio(struct MPT3SAS_ADAPTER *ioc, u8 cb_idx,
 	u16 smid;
 	u32 tag, unique_tag;
 
-	unique_tag = blk_mq_unique_tag(scmd->request);
+	unique_tag = blk_mq_unique_tag(scsi_cmd_to_rq(scmd));
 	tag = blk_mq_unique_tag_to_tag(unique_tag);
 
 	/*

drivers/scsi/mpt3sas/mpt3sas_scsih.c

@@ -3305,7 +3305,7 @@ scsih_abort(struct scsi_cmnd *scmd)
 	sdev_printk(KERN_INFO, scmd->device, "attempting task abort!"
 	    "scmd(0x%p), outstanding for %u ms & timeout %u ms\n",
 	    scmd, jiffies_to_msecs(jiffies - scmd->jiffies_at_alloc),
-	    (scmd->request->timeout / HZ) * 1000);
+	    (scsi_cmd_to_rq(scmd)->timeout / HZ) * 1000);
 	_scsih_tm_display_info(ioc, scmd);
 
 	sas_device_priv_data = scmd->device->hostdata;
@@ -5075,7 +5075,7 @@ _scsih_setup_eedp(struct MPT3SAS_ADAPTER *ioc, struct scsi_cmnd *scmd,
 		    MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG |
 		    MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD;
 		mpi_request->CDB.EEDP32.PrimaryReferenceTag =
-		    cpu_to_be32(t10_pi_ref_tag(scmd->request));
+		    cpu_to_be32(t10_pi_ref_tag(scsi_cmd_to_rq(scmd)));
 		break;
 
 	case SCSI_PROT_DIF_TYPE3:
@@ -5142,7 +5142,7 @@ scsih_qcmd(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
 	struct MPT3SAS_DEVICE *sas_device_priv_data;
 	struct MPT3SAS_TARGET *sas_target_priv_data;
 	struct _raid_device *raid_device;
-	struct request *rq = scmd->request;
+	struct request *rq = scsi_cmd_to_rq(scmd);
 	int class;
 	Mpi25SCSIIORequest_t *mpi_request;
 	struct _pcie_device *pcie_device = NULL;