libata: kill qc->nsect and cursect

libata used two separate sets of variables to record request size and
current offset for ATA and ATAPI.  This is confusing and fragile.
This patch replaces qc->nsect/cursect with qc->nbytes/curbytes and
kills them.  Also, ata_pio_sector() is updated to use bytes for
qc->cursg_ofs instead of sectors.  The field used to be used in bytes
for ATAPI and in sectors for ATA.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 6a99c0824751..9b5088ab2742 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -1359,7 +1359,7 @@ static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc)
                 goto nothing_to_do;
 
         qc->flags |= ATA_QCFLAG_IO;
-        qc->nsect = n_block;
+        qc->nbytes = n_block * ATA_SECT_SIZE;
 
         rc = ata_build_rw_tf(&qc->tf, qc->dev, block, n_block, tf_flags,
                              qc->tag);
@@ -2660,7 +2660,7 @@ static unsigned int ata_scsi_pass_thru(struct ata_queued_cmd *qc)
          * TODO: find out if we need to do more here to
          *       cover scatter/gather case.
          */
-        qc->nsect = scmd->request_bufflen / ATA_SECT_SIZE;
+        qc->nbytes = scmd->request_bufflen;
 
         /* request result TF */
         qc->flags |= ATA_QCFLAG_RESULT_TF;