[SCSI] scsi_dh: Do not use scsilun in rdac hardware handler

RDAC storage controller doesn't seem to use the scsilun format. It uses
only the last byte for LUN.
Signed-off-by: NChandra Seetharaman <sekharan@us.ibm.com>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

drivers/scsi/device_handler/scsi_dh_rdac.c

@@ -376,7 +376,7 @@ static int get_lun(struct scsi_device *sdev, struct rdac_dh_data *h)
 		if (inqp->page_id[0] != 'e' || inqp->page_id[1] != 'd' ||
 		    inqp->page_id[2] != 'i' || inqp->page_id[3] != 'd')
 			return SCSI_DH_NOSYS;
-		h->lun = scsilun_to_int((struct scsi_lun *)inqp->lun);
+		h->lun = inqp->lun[7]; /* Uses only the last byte */
 	}
 	return err;
 }