diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c
index 59799ca..ca2519d 100644
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -116,7 +116,7 @@
 unsigned int ide_rq_bytes(struct request *rq)
 {
 	if (blk_pc_request(rq))
-		return rq->data_len;
+		return blk_rq_bytes(rq);
 	else
 		return blk_rq_cur_sectors(rq) << 9;
 }