ide: cleanup rq->data_len usages

With recent unification of fields, it's now guaranteed that
rq->data_len always equals blk_rq_bytes().  Convert all direct users
to accessors.

[ Impact: convert direct rq->data_len usages to blk_rq_bytes() ]

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Cc: Borislav Petkov <petkovbb@googlemail.com>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

1 files changed, 7 insertions, 18 deletions

diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index eb4f3dc..2eadc9d 100644
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -577,7 +577,7 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
 	struct request *rq = hwif->rq;
 	ide_expiry_t *expiry = NULL;
 	int dma_error = 0, dma, thislen, uptodate = 0;
-	int write = (rq_data_dir(rq) == WRITE) ? 1 : 0, rc = 0, nsectors;
+	int write = (rq_data_dir(rq) == WRITE) ? 1 : 0, rc = 0;
 	int sense = blk_sense_request(rq);
 	unsigned int timeout;
 	u16 len;
@@ -707,9 +707,7 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
 
 out_end:
 	if (blk_pc_request(rq) && rc == 0) {
-		if (blk_end_request(rq, 0, rq->data_len))
-			BUG();
-
+		blk_end_request_all(rq, 0);
 		hwif->rq = NULL;
 	} else {
 		if (sense && uptodate)
@@ -727,22 +725,14 @@ out_end:
 			ide_cd_error_cmd(drive, cmd);
 
 		/* make sure it's fully ended */
-		if (blk_pc_request(rq))
-			nsectors = (rq->data_len + 511) >> 9;
-		else
-			nsectors = blk_rq_sectors(rq);
-
-		if (nsectors == 0)
-			nsectors = 1;
-
 		if (blk_fs_request(rq) == 0) {
-			rq->resid_len = rq->data_len -
+			rq->resid_len = blk_rq_bytes(rq) -
 				(cmd->nbytes - cmd->nleft);
 			if (uptodate == 0 && (cmd->tf_flags & IDE_TFLAG_WRITE))
 				rq->resid_len += cmd->last_xfer_len;
 		}
 
-		ide_complete_rq(drive, uptodate ? 0 : -EIO, nsectors << 9);
+		ide_complete_rq(drive, uptodate ? 0 : -EIO, blk_rq_bytes(rq));
 
 		if (sense && rc == 2)
 			ide_error(drive, "request sense failure", stat);
@@ -819,7 +809,7 @@ static void cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
 		 */
 		alignment = queue_dma_alignment(q) | q->dma_pad_mask;
 		if ((unsigned long)buf & alignment
-		    || rq->data_len & q->dma_pad_mask
+		    || blk_rq_bytes(rq) & q->dma_pad_mask
 		    || object_is_on_stack(buf))
 			drive->dma = 0;
 	}
@@ -867,9 +857,8 @@ static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq,
 
 	cmd.rq = rq;
 
-	if (blk_fs_request(rq) || rq->data_len) {
-		ide_init_sg_cmd(&cmd, blk_fs_request(rq) ?
-				(blk_rq_sectors(rq) << 9) : rq->data_len);
+	if (blk_fs_request(rq) || blk_rq_bytes(rq)) {
+		ide_init_sg_cmd(&cmd, blk_rq_bytes(rq));
 		ide_map_sg(drive, &cmd);
 	}