diff options
Diffstat (limited to 'drivers/ide/ide-atapi.c')
| -rw-r--r-- | drivers/ide/ide-atapi.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/ide/ide-atapi.c b/drivers/ide/ide-atapi.c index da71bfce92e..f82ddfb9a44 100644 --- a/drivers/ide/ide-atapi.c +++ b/drivers/ide/ide-atapi.c @@ -139,6 +139,29 @@ void ide_queue_pc_head(ide_drive_t *drive, struct gendisk *disk, } EXPORT_SYMBOL_GPL(ide_queue_pc_head); +/* + * Add a special packet command request to the tail of the request queue, + * 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 request *rq; + int error; + + rq = blk_get_request(drive->queue, READ, __GFP_WAIT); + rq->cmd_type = REQ_TYPE_SPECIAL; + rq->buffer = (char *)pc; + memcpy(rq->cmd, pc->c, 12); + if (drive->media == ide_tape) + rq->cmd[13] = REQ_IDETAPE_PC1; + error = blk_execute_rq(drive->queue, disk, rq, 0); + blk_put_request(rq); + + return error; +} +EXPORT_SYMBOL_GPL(ide_queue_pc_tail); + /* 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, |