diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index 7149224..65c5b70 100644
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -380,7 +380,7 @@
 		}
 
 		tape->first_frame += blocks;
-		rq->data_len -= blocks * tape->blk_size;
+		rq->resid_len = rq->data_len - blocks * tape->blk_size;
 
 		if (pc->error) {
 			uptodate = 0;
@@ -903,7 +903,7 @@
 	blk_execute_rq(drive->queue, tape->disk, rq, 0);
 
 	/* calculate the number of transferred bytes and update buffer state */
-	size -= rq->data_len;
+	size -= rq->resid_len;
 	tape->cur = tape->buf;
 	if (cmd == REQ_IDETAPE_READ)
 		tape->valid = size;