[PATCH 09/11] ide: cleanup rq->data_len usages

Tejun Heo
2009-05-04T08:09:40Z

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>
---
drivers/ide/ide-atapi.c | 4 ++--
drivers/ide/ide-cd.c | 25 +++++++------------------
drivers/ide/ide-floppy.c | 4 ++--
drivers/ide/ide-io.c | 2 +-
4 files changed, 12 insertions(+), 23 deletions(-)

diff --git a/drivers/ide/ide-atapi.c b/drivers/ide/ide-atapi.c
index e4a02a0..792534d 100644
--- a/drivers/ide/ide-atapi.c
+++ b/drivers/ide/ide-atapi.c
@@ -255,7 +255,7 @@ void ide_retry_pc(ide_drive_t *drive)
ide_init_pc(pc);
memcpy(pc->c, sense_rq->cmd, 12);
pc->buf = bio_data(sense_rq->bio); /* pointer to mapped address */
- pc->req_xfer = sense_rq->data_len;
+ pc->req_xfer = blk_rq_bytes(sense_rq);

if (drive->media == ide_tape)
set_bit(IDE_AFLAG_IGNORE_DSC, &drive->atapi_flags);
@@ -303,7 +303,7 @@ int ide_cd_get_xferlen(struct request *rq)
return 32768;
else if (blk_sense_request(rq) || blk_pc_request(rq) ||
rq->cmd_type == REQ_TYPE_ATA_PC)
- return rq->data_len;
+ return blk_rq_bytes(rq);
else
return 0;
}
diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index 94a341b..1a58b38 100644
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -576,7 +576,7 @@ 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;
@@ -706,9 +706,7 @@ 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)
@@ -726,22 +724,14 @@ 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);
@@ -818,7 +808,7 @@ 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;
}
@@ -866,9 +856,8 @@ 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);
}

diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c
index 1c460bd..6509817 100644
--- a/drivers/ide/ide-floppy.c
+++ b/drivers/ide/ide-floppy.c
@@ -220,14 +220,14 @@ static void idefloppy_blockpc_cmd(struct ide_disk_obj *floppy,
ide_init_pc(pc);
memcpy(pc->c, rq->cmd, sizeof(pc->c));
pc->rq = rq;
- if (rq->data_len) {
+ if (blk_rq_bytes(rq)) {
pc->flags |= PC_FLAG_DMA_OK;
if (rq_data_dir(rq) == WRITE)
pc->flags |= PC_FLAG_WRITING;
}
/* pio will be performed by ide_pio_bytes() which handles sg fine */
pc->buf = NULL;
- pc->req_xfer = pc->buf_size = rq->data_len;
+ pc->req_xfer = pc->buf_size = blk_rq_bytes(rq);
}

static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive,
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 @@ void ide_complete_cmd(ide_drive_t *drive, struct ide_cmd *cmd, u8 stat, u8 err)
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;
}
--
1.6.0.2