[PATCH] libata: fix comments on ata_tf_from_fis()

Fix description on comments for ata_tf_from_fis().
Signed-off-by: NMark Lord <mlord@pobox.com>
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>

drivers/scsi/libata-core.c

@@ -532,8 +532,7 @@ void ata_tf_to_fis(const struct ata_taskfile *tf, u8 *fis, u8 pmp)
  *	@fis: Buffer from which data will be input
  *	@tf: Taskfile to output
  *
- *	Converts a standard ATA taskfile to a Serial ATA
- *	FIS structure (Register - Host to Device).
+ *	Converts a serial ATA FIS structure to a standard ATA taskfile.
  *
  *	LOCKING:
  *	Inherited from caller.