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linux-sg2042
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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>
This commit is contained in:
Tejun Heo 2009-05-07 22:24:43 +09:00 committed by Jens Axboe
parent b079041030
commit 34b7d2c957
5 changed files with 13 additions and 24 deletions
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4
drivers/ide/ide-atapi.c
View File

@ -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;
}

25
drivers/ide/ide-cd.c
View File

@ -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);
}

4
drivers/ide/ide-floppy.c
View File

@ -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,

2
drivers/ide/ide-io.c
View File

@ -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;
}

2
drivers/ide/ide-tape.c
View File

@ -380,7 +380,7 @@ static int ide_tape_callback(ide_drive_t *drive, int dsc)
}
tape->first_frame += blocks;
rq->resid_len = rq->data_len - blocks * tape->blk_size;
rq->resid_len = blk_rq_bytes(rq) - blocks * tape->blk_size;
if (pc->error) {
uptodate = 0;