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authorBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2008-10-10 22:39:38 +0200
committerBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2008-10-10 22:39:38 +0200
commit2ac07d920604eeee8966d52e70161f9b31fe90a3 (patch)
treeea9fc0a9902da190b5fe695018a4c79740e88d18 /drivers/ide/ide-atapi.c
parent7645c1514c7d34ebdf3ea0e8ee3a935c08abceb2 (diff)
ide: add ide_queue_pc_tail() helper
* Add ide_queue_pc_tail() and convert ide-{floppy,tape}.c to use it instead of ide*_queue_pc_tail(). * Remove no longer used ide*_queue_pc_tail(). 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.c23
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,