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>

diff --git a/drivers/ide/ide-atapi.c b/drivers/ide/ide-atapi.c
index e4a02a0..792534d 100644 (file)
--- 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 eb4f3dc..2eadc9d 100644 (file)
--- 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);
        }
 

diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c
index 1c460bd..6509817 100644 (file)
--- 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 (file)
--- 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;
 }

diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index c6cf3a9..e166045 100644 (file)
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -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;