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ide: add ide_do_start_stop() helper

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* Add ide_do_start_stop() helper and convert ide-{floppy,tape}.c
  to use it.

* Remove no longer used idefloppy_create_start_stop_cmd()
  and idetape_create_load_unload_cmd().

There should be no functional changes caused by this patch.

Acked-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2008-10-10 22:39:39 +02:00
parent 0578042db3
commit 0c8a6c7aea
4 changed files with 24 additions and 35 deletions
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15
drivers/ide/ide-atapi.c
View File

@ -162,6 +162,21 @@ int ide_queue_pc_tail(ide_drive_t *drive, struct gendisk *disk,
}
EXPORT_SYMBOL_GPL(ide_queue_pc_tail);
int ide_do_start_stop(ide_drive_t *drive, struct gendisk *disk, int start)
{
struct ide_atapi_pc pc;
ide_init_pc(&pc);
pc.c[0] = START_STOP;
pc.c[4] = start;
if (drive->media == ide_tape)
pc.flags |= PC_FLAG_WAIT_FOR_DSC;
return ide_queue_pc_tail(drive, disk, &pc);
}
EXPORT_SYMBOL_GPL(ide_do_start_stop);
int ide_set_media_lock(ide_drive_t *drive, struct gendisk *disk, int on)
{
struct ide_atapi_pc pc;

19
drivers/ide/ide-floppy.c
View File

@ -359,13 +359,6 @@ void ide_floppy_create_mode_sense_cmd(struct ide_atapi_pc *pc, u8 page_code)
pc->req_xfer = length;
}
static void idefloppy_create_start_stop_cmd(struct ide_atapi_pc *pc, int start)
{
ide_init_pc(pc);
pc->c[0] = GPCMD_START_STOP_UNIT;
pc->c[4] = start;
}
static void idefloppy_create_rw_cmd(idefloppy_floppy_t *floppy,
struct ide_atapi_pc *pc, struct request *rq,
unsigned long sector)
@ -800,10 +793,8 @@ static int idefloppy_open(struct inode *inode, struct file *filp)
ide_init_pc(&pc);
pc.c[0] = GPCMD_TEST_UNIT_READY;
if (ide_queue_pc_tail(drive, disk, &pc)) {
idefloppy_create_start_stop_cmd(&pc, 1);
(void)ide_queue_pc_tail(drive, disk, &pc);
}
if (ide_queue_pc_tail(drive, disk, &pc))
ide_do_start_stop(drive, disk, 1);
if (ide_floppy_get_capacity(drive)
&& (filp->f_flags & O_NDELAY) == 0
@ -880,10 +871,8 @@ static int ide_floppy_lockdoor(ide_drive_t *drive, struct ide_atapi_pc *pc,
ide_set_media_lock(drive, disk, prevent);
if (cmd == CDROMEJECT) {
idefloppy_create_start_stop_cmd(pc, 2);
(void)ide_queue_pc_tail(drive, disk, pc);
}
if (cmd == CDROMEJECT)
ide_do_start_stop(drive, disk, 2);
return 0;
}

24
drivers/ide/ide-tape.c
View File

@ -1125,15 +1125,6 @@ static void idetape_create_test_unit_ready_cmd(struct ide_atapi_pc *pc)
pc->c[0] = TEST_UNIT_READY;
}
static void idetape_create_load_unload_cmd(ide_drive_t *drive,
struct ide_atapi_pc *pc, int cmd)
{
ide_init_pc(pc);
pc->c[0] = START_STOP;
pc->c[4] = cmd;
pc->flags |= PC_FLAG_WAIT_FOR_DSC;
}
static int idetape_wait_ready(ide_drive_t *drive, unsigned long timeout)
{
idetape_tape_t *tape = drive->driver_data;
@ -1153,9 +1144,7 @@ static int idetape_wait_ready(ide_drive_t *drive, unsigned long timeout)
/* no media */
if (load_attempted)
return -ENOMEDIUM;
idetape_create_load_unload_cmd(drive, &pc,
IDETAPE_LU_LOAD_MASK);
ide_queue_pc_tail(drive, disk, &pc);
ide_do_start_stop(drive, disk, IDETAPE_LU_LOAD_MASK);
load_attempted = 1;
/* not about to be ready */
} else if (!(tape->sense_key == 2 && tape->asc == 4 &&
@ -1836,9 +1825,7 @@ static int idetape_mtioctop(ide_drive_t *drive, short mt_op, int mt_count)
return 0;
case MTLOAD:
ide_tape_discard_merge_buffer(drive, 0);
idetape_create_load_unload_cmd(drive, &pc,
IDETAPE_LU_LOAD_MASK);
return ide_queue_pc_tail(drive, disk, &pc);
return ide_do_start_stop(drive, disk, IDETAPE_LU_LOAD_MASK);
case MTUNLOAD:
case MTOFFL:
/*
@ -1850,9 +1837,7 @@ static int idetape_mtioctop(ide_drive_t *drive, short mt_op, int mt_count)
tape->door_locked = DOOR_UNLOCKED;
}
ide_tape_discard_merge_buffer(drive, 0);
idetape_create_load_unload_cmd(drive, &pc,
!IDETAPE_LU_LOAD_MASK);
retval = ide_queue_pc_tail(drive, disk, &pc);
retval = ide_do_start_stop(drive, disk, !IDETAPE_LU_LOAD_MASK);
if (!retval)
clear_bit(IDE_AFLAG_MEDIUM_PRESENT, &drive->atapi_flags);
return retval;
@ -1861,9 +1846,8 @@ static int idetape_mtioctop(ide_drive_t *drive, short mt_op, int mt_count)
return idetape_flush_tape_buffers(drive);
case MTRETEN:
ide_tape_discard_merge_buffer(drive, 0);
idetape_create_load_unload_cmd(drive, &pc,
return ide_do_start_stop(drive, disk,
IDETAPE_LU_RETENSION_MASK | IDETAPE_LU_LOAD_MASK);
return ide_queue_pc_tail(drive, disk, &pc);
case MTEOM:
idetape_create_space_cmd(&pc, 0, IDETAPE_SPACE_TO_EOD);
return ide_queue_pc_tail(drive, disk, &pc);

1
include/linux/ide.h
View File

@ -1142,6 +1142,7 @@ void ide_queue_pc_head(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *,
struct request *);
int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *);
int ide_do_start_stop(ide_drive_t *, struct gendisk *, int);
int ide_set_media_lock(ide_drive_t *, struct gendisk *, int);
ide_startstop_t ide_pc_intr(ide_drive_t *drive, struct ide_atapi_pc *pc,