Make the disk mini-layer check for and handle zero-length transfers

instead of the underlying drivers.

1 files changed, 0 insertions, 7 deletions

diff --git a/sys/dev/ata/atapi-fd.c b/sys/dev/ata/atapi-fd.c
index a831ff4..a419d2b 100644
--- a/sys/dev/ata/atapi-fd.c
+++ b/sys/dev/ata/atapi-fd.c
@@ -307,13 +307,6 @@ afdstrategy(struct bio *bp)
 	return;
     }
 
-    /* if it's a null transfer, return immediatly. */
-    if (bp->bio_bcount == 0) {
-	bp->bio_resid = 0;
-	biodone(bp);
-	return;
-    }
-
     s = splbio();
     bioqdisksort(&fdp->queue, bp);
     ata_start(fdp->atp->controller);