scsi: lpfc: Use sg_dma_len() API to get struct scatterlist's length

The sg_dma_len() API should be used to retrieve a scatterlist's length
instead of directly accessing scatterlist->length.

Signed-off-by: Justin Tee <justin.tee@broadcom.com>
Link: https://lore.kernel.org/r/20240131185112.149731-4-justintee8345@gmail.com
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

Author: Justin Tee

drivers/scsi/lpfc/lpfc_scsi.c

@@ -2728,14 +2728,14 @@ lpfc_calc_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd)
 		sgde = scsi_sglist(cmd);
 		blksize = scsi_prot_interval(cmd);
 		data_src = (uint8_t *)sg_virt(sgde);
-		data_len = sgde->length;
+		data_len = sg_dma_len(sgde);
 		if ((data_len & (blksize - 1)) == 0)
 			chk_guard = 1;
 
 		src = (struct scsi_dif_tuple *)sg_virt(sgpe);
 		start_ref_tag = scsi_prot_ref_tag(cmd);
 		start_app_tag = src->app_tag;
-		len = sgpe->length;
+		len = sg_dma_len(sgpe);
 		while (src && protsegcnt) {
 			while (len) {
 
@@ -2800,7 +2800,7 @@ lpfc_calc_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd)
 						goto out;
 
 					data_src = (uint8_t *)sg_virt(sgde);
-					data_len = sgde->length;
+					data_len = sg_dma_len(sgde);
 					if ((data_len & (blksize - 1)) == 0)
 						chk_guard = 1;
 				}
@@ -2810,7 +2810,7 @@ lpfc_calc_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd)
 			sgpe = sg_next(sgpe);
 			if (sgpe) {
 				src = (struct scsi_dif_tuple *)sg_virt(sgpe);
-				len = sgpe->length;
+				len = sg_dma_len(sgpe);
 			} else {
 				src = NULL;
 			}