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| author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-10-11 00:39:37 +0400 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-10-11 00:39:37 +0400 |
| commit | 7645c1514c7d34ebdf3ea0e8ee3a935c08abceb2 (patch) | |
| tree | 98e51341f3f1a259ca89baf7d2e83b7357dc8a22 /drivers/ide/ide-atapi.c | |
| parent | 7bf7420a318978cd6042e5a5da34b7cfa18ae559 (diff) | |
| download | linux-7645c1514c7d34ebdf3ea0e8ee3a935c08abceb2.tar.xz | |
ide: add ide_queue_pc_head() helper
* Move REQ_IDETAPE_* enums to <linux/ide.h>.
* Add ide_queue_pc_head() and convert ide-{floppy,tape}.c to use it
instead of ide*_queue_pc_head().
* Remove no longer used ide*_queue_pc_head().
There should be no functional changes caused by this patch.
Acked-by: Borislav Petkov <petkovbb@gmail.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/ide-atapi.c')
| -rw-r--r-- | drivers/ide/ide-atapi.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/ide/ide-atapi.c b/drivers/ide/ide-atapi.c index 8f0842ce77f5..da71bfce92e8 100644 --- a/drivers/ide/ide-atapi.c +++ b/drivers/ide/ide-atapi.c @@ -119,6 +119,26 @@ void ide_init_pc(struct ide_atapi_pc *pc) } EXPORT_SYMBOL_GPL(ide_init_pc); +/* + * Generate a new packet command request in front of the request queue, before + * the current request, so that it will be processed immediately, on the next + * pass through the driver. + */ +void ide_queue_pc_head(ide_drive_t *drive, struct gendisk *disk, + struct ide_atapi_pc *pc, struct request *rq) +{ + blk_rq_init(NULL, rq); + rq->cmd_type = REQ_TYPE_SPECIAL; + rq->cmd_flags |= REQ_PREEMPT; + rq->buffer = (char *)pc; + rq->rq_disk = disk; + memcpy(rq->cmd, pc->c, 12); + if (drive->media == ide_tape) + rq->cmd[13] = REQ_IDETAPE_PC1; + ide_do_drive_cmd(drive, rq); +} +EXPORT_SYMBOL_GPL(ide_queue_pc_head); + /* TODO: unify the code thus making some arguments go away */ ide_startstop_t ide_pc_intr(ide_drive_t *drive, struct ide_atapi_pc *pc, ide_handler_t *handler, unsigned int timeout, ide_expiry_t *expiry, |