diff --git a/include/scsi/scsi_cmnd.h b/include/scsi/scsi_cmnd.h
index 42ed789ebafcf9ab04c759d7ef167e981aab2bc6..e0ae71098144ac9511f5ba315102e74e1d4e0516 100644
--- a/include/scsi/scsi_cmnd.h
+++ b/include/scsi/scsi_cmnd.h
@@ -318,7 +318,7 @@ static inline void set_driver_byte(struct scsi_cmnd *cmd, char status)
 
 static inline unsigned scsi_transfer_length(struct scsi_cmnd *scmd)
 {
-	unsigned int xfer_len = blk_rq_bytes(scmd->request);
+	unsigned int xfer_len = scsi_out(scmd)->length;
 	unsigned int prot_op = scsi_get_prot_op(scmd);
 	unsigned int sector_size = scmd->device->sector_size;