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Subject[PATCH 04/15] ide-atapi: add a len-parameter to ide_queue_pc_tail
Date
This is in preparation for removing ide_atapi_pc.

There should be no functional change resulting from this patch.

Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
---
drivers/ide/ide-atapi.c | 12 ++++++------
drivers/ide/ide-floppy.c | 4 ++--
drivers/ide/ide-floppy_ioctl.c | 8 ++++----
drivers/ide/ide-tape.c | 26 +++++++++++++-------------
include/linux/ide.h | 3 ++-
5 files changed, 27 insertions(+), 26 deletions(-)
diff --git a/drivers/ide/ide-atapi.c b/drivers/ide/ide-atapi.c
index 1022e42..0d4da2c 100644
--- a/drivers/ide/ide-atapi.c
+++ b/drivers/ide/ide-atapi.c
@@ -84,7 +84,7 @@ EXPORT_SYMBOL_GPL(ide_init_pc);
* and wait for it to be serviced.
*/
int ide_queue_pc_tail(ide_drive_t *drive, struct gendisk *disk,
- struct ide_atapi_pc *pc)
+ struct ide_atapi_pc *pc, unsigned int bufflen)
{
struct request *rq;
int error;
@@ -93,8 +93,8 @@ int ide_queue_pc_tail(ide_drive_t *drive, struct gendisk *disk,
rq->cmd_type = REQ_TYPE_SPECIAL;
rq->special = (char *)pc;

- if (pc->req_xfer) {
- error = blk_rq_map_kern(drive->queue, rq, pc->buf, pc->req_xfer,
+ if (bufflen) {
+ error = blk_rq_map_kern(drive->queue, rq, pc->buf, bufflen,
GFP_NOIO);
if (error)
goto put_req;
@@ -117,7 +117,7 @@ int ide_do_test_unit_ready(ide_drive_t *drive, struct gendisk *disk)
ide_init_pc(&pc);
pc.c[0] = TEST_UNIT_READY;

- return ide_queue_pc_tail(drive, disk, &pc);
+ return ide_queue_pc_tail(drive, disk, &pc, 0);
}
EXPORT_SYMBOL_GPL(ide_do_test_unit_ready);

@@ -132,7 +132,7 @@ int ide_do_start_stop(ide_drive_t *drive, struct gendisk *disk, int start)
if (drive->media == ide_tape)
pc.flags |= PC_FLAG_WAIT_FOR_DSC;

- return ide_queue_pc_tail(drive, disk, &pc);
+ return ide_queue_pc_tail(drive, disk, &pc, 0);
}
EXPORT_SYMBOL_GPL(ide_do_start_stop);

@@ -147,7 +147,7 @@ int ide_set_media_lock(ide_drive_t *drive, struct gendisk *disk, int on)
pc.c[0] = ALLOW_MEDIUM_REMOVAL;
pc.c[4] = on;

- return ide_queue_pc_tail(drive, disk, &pc);
+ return ide_queue_pc_tail(drive, disk, &pc, 0);
}
EXPORT_SYMBOL_GPL(ide_set_media_lock);

diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c
index a1c5598..5df00d4 100644
--- a/drivers/ide/ide-floppy.c
+++ b/drivers/ide/ide-floppy.c
@@ -318,7 +318,7 @@ static int ide_floppy_get_flexible_disk_page(ide_drive_t *drive,

ide_floppy_create_mode_sense_cmd(pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE);

- if (ide_queue_pc_tail(drive, disk, pc)) {
+ if (ide_queue_pc_tail(drive, disk, pc, pc->req_xfer)) {
printk(KERN_ERR PFX "Can't get flexible disk page params\n");
return 1;
}
@@ -390,7 +390,7 @@ static int ide_floppy_get_capacity(ide_drive_t *drive)
pc.buf = &pc_buf[0];
pc.buf_size = sizeof(pc_buf);

- if (ide_queue_pc_tail(drive, disk, &pc)) {
+ if (ide_queue_pc_tail(drive, disk, &pc, pc.req_xfer)) {
printk(KERN_ERR PFX "Can't get floppy parameters\n");
return 1;
}
diff --git a/drivers/ide/ide-floppy_ioctl.c b/drivers/ide/ide-floppy_ioctl.c
index cd8a420..75f1d50 100644
--- a/drivers/ide/ide-floppy_ioctl.c
+++ b/drivers/ide/ide-floppy_ioctl.c
@@ -50,7 +50,7 @@ static int ide_floppy_get_format_capacities(ide_drive_t *drive,
pc->buf = &pc_buf[0];
pc->buf_size = sizeof(pc_buf);

- if (ide_queue_pc_tail(drive, floppy->disk, pc)) {
+ if (ide_queue_pc_tail(drive, floppy->disk, pc, pc->req_xfer)) {
printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n");
return -EIO;
}
@@ -124,7 +124,7 @@ static int ide_floppy_get_sfrp_bit(ide_drive_t *drive, struct ide_atapi_pc *pc)
ide_floppy_create_mode_sense_cmd(pc, IDEFLOPPY_CAPABILITIES_PAGE);
pc->flags |= PC_FLAG_SUPPRESS_ERROR;

- if (ide_queue_pc_tail(drive, floppy->disk, pc))
+ if (ide_queue_pc_tail(drive, floppy->disk, pc, pc->req_xfer))
return 1;

if (pc->buf[8 + 2] & 0x40)
@@ -172,7 +172,7 @@ static int ide_floppy_format_unit(ide_drive_t *drive, struct ide_atapi_pc *pc,
ide_floppy_get_sfrp_bit(drive, pc);
ide_floppy_create_format_unit_cmd(pc, blocks, length, flags);

- if (ide_queue_pc_tail(drive, floppy->disk, pc))
+ if (ide_queue_pc_tail(drive, floppy->disk, pc, pc->req_xfer))
err = -EIO;

out:
@@ -200,7 +200,7 @@ static int ide_floppy_get_format_progress(ide_drive_t *drive,

if (drive->atapi_flags & IDE_AFLAG_SRFP) {
ide_create_request_sense_cmd(drive, pc);
- if (ide_queue_pc_tail(drive, floppy->disk, pc))
+ if (ide_queue_pc_tail(drive, floppy->disk, pc, pc->req_xfer))
return -EIO;

if (floppy->sense_key == 2 &&
diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index c933709..f09a263 100644
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -770,7 +770,7 @@ static int idetape_flush_tape_buffers(ide_drive_t *drive)
int rc;

idetape_create_write_filemark_cmd(drive, &pc, 0);
- rc = ide_queue_pc_tail(drive, tape->disk, &pc);
+ rc = ide_queue_pc_tail(drive, tape->disk, &pc, pc.req_xfer);
if (rc)
return rc;
idetape_wait_ready(drive, 60 * 5 * HZ);
@@ -793,7 +793,7 @@ static int idetape_read_position(ide_drive_t *drive)
debug_log(DBG_PROCS, "Enter %s\n", __func__);

idetape_create_read_position_cmd(&pc);
- if (ide_queue_pc_tail(drive, tape->disk, &pc))
+ if (ide_queue_pc_tail(drive, tape->disk, &pc, pc.req_xfer))
return -1;
position = tape->first_frame;
return position;
@@ -846,12 +846,12 @@ static int idetape_position_tape(ide_drive_t *drive, unsigned int block,
__ide_tape_discard_merge_buffer(drive);
idetape_wait_ready(drive, 60 * 5 * HZ);
idetape_create_locate_cmd(drive, &pc, block, partition, skip);
- retval = ide_queue_pc_tail(drive, disk, &pc);
+ retval = ide_queue_pc_tail(drive, disk, &pc, pc.req_xfer);
if (retval)
return (retval);

idetape_create_read_position_cmd(&pc);
- return ide_queue_pc_tail(drive, disk, &pc);
+ return ide_queue_pc_tail(drive, disk, &pc, pc.req_xfer);
}

static void ide_tape_discard_merge_buffer(ide_drive_t *drive,
@@ -1047,12 +1047,12 @@ static int idetape_rewind_tape(ide_drive_t *drive)
debug_log(DBG_SENSE, "Enter %s\n", __func__);

idetape_create_rewind_cmd(drive, &pc);
- retval = ide_queue_pc_tail(drive, disk, &pc);
+ retval = ide_queue_pc_tail(drive, disk, &pc, pc.req_xfer);
if (retval)
return retval;

idetape_create_read_position_cmd(&pc);
- retval = ide_queue_pc_tail(drive, disk, &pc);
+ retval = ide_queue_pc_tail(drive, disk, &pc, pc.req_xfer);
if (retval)
return retval;
return 0;
@@ -1120,7 +1120,7 @@ static int idetape_space_over_filemarks(ide_drive_t *drive, short mt_op,
case MTBSF:
idetape_create_space_cmd(&pc, mt_count - count,
IDETAPE_SPACE_OVER_FILEMARK);
- return ide_queue_pc_tail(drive, disk, &pc);
+ return ide_queue_pc_tail(drive, disk, &pc, pc.req_xfer);
case MTFSFM:
case MTBSFM:
if (!sprev)
@@ -1259,7 +1259,7 @@ static int idetape_write_filemark(ide_drive_t *drive)

/* Write a filemark */
idetape_create_write_filemark_cmd(drive, &pc, 1);
- if (ide_queue_pc_tail(drive, tape->disk, &pc)) {
+ if (ide_queue_pc_tail(drive, tape->disk, &pc, pc.req_xfer)) {
printk(KERN_ERR "ide-tape: Couldn't write a filemark\n");
return -EIO;
}
@@ -1344,11 +1344,11 @@ static int idetape_mtioctop(ide_drive_t *drive, short mt_op, int mt_count)
IDETAPE_LU_RETENSION_MASK | IDETAPE_LU_LOAD_MASK);
case MTEOM:
idetape_create_space_cmd(&pc, 0, IDETAPE_SPACE_TO_EOD);
- return ide_queue_pc_tail(drive, disk, &pc);
+ return ide_queue_pc_tail(drive, disk, &pc, pc.req_xfer);
case MTERASE:
(void)idetape_rewind_tape(drive);
idetape_create_erase_cmd(&pc);
- return ide_queue_pc_tail(drive, disk, &pc);
+ return ide_queue_pc_tail(drive, disk, &pc, pc.req_xfer);
case MTSETBLK:
if (mt_count) {
if (mt_count < tape->blk_size ||
@@ -1457,7 +1457,7 @@ static void ide_tape_get_bsize_from_bdesc(ide_drive_t *drive)
struct ide_atapi_pc pc;

idetape_create_mode_sense_cmd(&pc, IDETAPE_BLOCK_DESCRIPTOR);
- if (ide_queue_pc_tail(drive, tape->disk, &pc)) {
+ if (ide_queue_pc_tail(drive, tape->disk, &pc, pc.req_xfer)) {
printk(KERN_ERR "ide-tape: Can't get block descriptor\n");
if (tape->blk_size == 0) {
printk(KERN_WARNING "ide-tape: Cannot deal with zero "
@@ -1613,7 +1613,7 @@ static void idetape_get_inquiry_results(ide_drive_t *drive)
pc.buf = &pc_buf[0];
pc.buf_size = sizeof(pc_buf);

- if (ide_queue_pc_tail(drive, tape->disk, &pc)) {
+ if (ide_queue_pc_tail(drive, tape->disk, &pc, pc.req_xfer)) {
printk(KERN_ERR "ide-tape: %s: can't get INQUIRY results\n",
tape->name);
return;
@@ -1642,7 +1642,7 @@ static void idetape_get_mode_sense_results(ide_drive_t *drive)
u8 speed, max_speed;

idetape_create_mode_sense_cmd(&pc, IDETAPE_CAPABILITIES_PAGE);
- if (ide_queue_pc_tail(drive, tape->disk, &pc)) {
+ if (ide_queue_pc_tail(drive, tape->disk, &pc, pc.req_xfer)) {
printk(KERN_ERR "ide-tape: Can't get tape parameters - assuming"
" some default values\n");
tape->blk_size = 512;
diff --git a/include/linux/ide.h b/include/linux/ide.h
index 745a393..7e15bd1 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -1160,7 +1160,8 @@ enum {
REQ_IDETAPE_WRITE = (1 << 3),
};

-int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *);
+int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *,
+ unsigned int);

int ide_do_test_unit_ready(ide_drive_t *, struct gendisk *);
int ide_do_start_stop(ide_drive_t *, struct gendisk *, int);
--
1.6.3


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