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author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-10-10 22:39:37 +0200 |
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committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-10-10 22:39:37 +0200 |
commit | 385a4b8787c70b708688bee65139f15b0f79f144 (patch) | |
tree | ebf6bb2a94e0b12fb06b2cc304ebe5b2fbf7245c /drivers/ide/ide-tape.c | |
parent | e996fc8ae96a822f037e25463cb8dac5b93839f7 (diff) | |
download | kernel_samsung_espresso10-385a4b8787c70b708688bee65139f15b0f79f144.zip kernel_samsung_espresso10-385a4b8787c70b708688bee65139f15b0f79f144.tar.gz kernel_samsung_espresso10-385a4b8787c70b708688bee65139f15b0f79f144.tar.bz2 |
ide-tape: add ide_tape_set_media_lock() helper
Add ide_tape_set_media_lock() helper and convert idetape_mtioctop(),
idetape_chrdev_open() and idetape_chrdev_release() to use it.
There should be no functional changes caused by this patch (it is
OK to modify ->door_locked if idetape_create_prevent_cmd() fails).
Acked-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/ide-tape.c')
-rw-r--r-- | drivers/ide/ide-tape.c | 39 |
1 files changed, 19 insertions, 20 deletions
diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index d4a9c47..26d5b05 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -1299,6 +1299,16 @@ static int idetape_create_prevent_cmd(ide_drive_t *drive, return 1; } +static int ide_tape_set_media_lock(ide_drive_t *drive, int on) +{ + struct ide_atapi_pc pc; + + if (!idetape_create_prevent_cmd(drive, &pc, on)) + return 0; + + return idetape_queue_pc_tail(drive, &pc); +} + static void __ide_tape_discard_merge_buffer(ide_drive_t *drive) { idetape_tape_t *tape = drive->driver_data; @@ -1927,9 +1937,8 @@ static int idetape_mtioctop(ide_drive_t *drive, short mt_op, int mt_count) * attempting to eject. */ if (tape->door_locked) { - if (idetape_create_prevent_cmd(drive, &pc, 0)) - if (!idetape_queue_pc_tail(drive, &pc)) - tape->door_locked = DOOR_UNLOCKED; + if (!ide_tape_set_media_lock(drive, 0)) + tape->door_locked = DOOR_UNLOCKED; } ide_tape_discard_merge_buffer(drive, 0); idetape_create_load_unload_cmd(drive, &pc, @@ -1973,17 +1982,13 @@ static int idetape_mtioctop(ide_drive_t *drive, short mt_op, int mt_count) case MTFSR: case MTBSR: case MTLOCK: - if (!idetape_create_prevent_cmd(drive, &pc, 1)) - return 0; - retval = idetape_queue_pc_tail(drive, &pc); + retval = ide_tape_set_media_lock(drive, 1); if (retval) return retval; tape->door_locked = DOOR_EXPLICITLY_LOCKED; return 0; case MTUNLOCK: - if (!idetape_create_prevent_cmd(drive, &pc, 0)) - return 0; - retval = idetape_queue_pc_tail(drive, &pc); + retval = ide_tape_set_media_lock(drive, 0); if (retval) return retval; tape->door_locked = DOOR_UNLOCKED; @@ -2085,7 +2090,6 @@ static int idetape_chrdev_open(struct inode *inode, struct file *filp) unsigned int minor = iminor(inode), i = minor & ~0xc0; ide_drive_t *drive; idetape_tape_t *tape; - struct ide_atapi_pc pc; int retval; if (i >= MAX_HWIFS * MAX_DRIVES) @@ -2148,11 +2152,9 @@ static int idetape_chrdev_open(struct inode *inode, struct file *filp) /* Lock the tape drive door so user can't eject. */ if (tape->chrdev_dir == IDETAPE_DIR_NONE) { - if (idetape_create_prevent_cmd(drive, &pc, 1)) { - if (!idetape_queue_pc_tail(drive, &pc)) { - if (tape->door_locked != DOOR_EXPLICITLY_LOCKED) - tape->door_locked = DOOR_LOCKED; - } + if (!ide_tape_set_media_lock(drive, 1)) { + if (tape->door_locked != DOOR_EXPLICITLY_LOCKED) + tape->door_locked = DOOR_LOCKED; } } unlock_kernel(); @@ -2185,7 +2187,6 @@ static int idetape_chrdev_release(struct inode *inode, struct file *filp) { struct ide_tape_obj *tape = ide_tape_f(filp); ide_drive_t *drive = tape->drive; - struct ide_atapi_pc pc; unsigned int minor = iminor(inode); lock_kernel(); @@ -2204,10 +2205,8 @@ static int idetape_chrdev_release(struct inode *inode, struct file *filp) (void) idetape_rewind_tape(drive); if (tape->chrdev_dir == IDETAPE_DIR_NONE) { if (tape->door_locked == DOOR_LOCKED) { - if (idetape_create_prevent_cmd(drive, &pc, 0)) { - if (!idetape_queue_pc_tail(drive, &pc)) - tape->door_locked = DOOR_UNLOCKED; - } + if (!ide_tape_set_media_lock(drive, 0)) + tape->door_locked = DOOR_UNLOCKED; } } clear_bit(IDE_AFLAG_BUSY, &drive->atapi_flags); |