[PATCH] Remove ->waiting member from struct request

As the comments indicates in blkdev.h, we can fold it into ->end_io_data
usage as that is really what ->waiting is. Fixup the users of
blk_end_sync_rq().

Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/drivers/block/DAC960.c b/drivers/block/DAC960.c
index a360215..2568640 100644
--- a/drivers/block/DAC960.c
+++ b/drivers/block/DAC960.c
@@ -3331,7 +3331,7 @@
 		Command->DmaDirection = PCI_DMA_TODEVICE;
 		Command->CommandType = DAC960_WriteCommand;
 	}
-	Command->Completion = Request->waiting;
+	Command->Completion = Request->end_io_data;
 	Command->LogicalDriveNumber = (long)Request->rq_disk->private_data;
 	Command->BlockNumber = Request->sector;
 	Command->BlockCount = Request->nr_sectors;
diff --git a/drivers/block/paride/pd.c b/drivers/block/paride/pd.c
index 12ff1a2..500d2eb 100644
--- a/drivers/block/paride/pd.c
+++ b/drivers/block/paride/pd.c
@@ -722,11 +722,10 @@
 	rq.rq_status = RQ_ACTIVE;
 	rq.rq_disk = disk->gd;
 	rq.ref_count = 1;
-	rq.waiting = &wait;
+	rq.end_io_data = &wait;
 	rq.end_io = blk_end_sync_rq;
 	blk_insert_request(disk->gd->queue, &rq, 0, func);
 	wait_for_completion(&wait);
-	rq.waiting = NULL;
 	if (rq.errors)
 		err = -EIO;
 	blk_put_request(&rq);
diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index 42891d2..888d1ac 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -375,7 +375,7 @@
 	rq->cmd_len = COMMAND_SIZE(rq->cmd[0]);
 
 	rq->ref_count++;
-	rq->waiting = &wait;
+	rq->end_io_data = &wait;
 	rq->end_io = blk_end_sync_rq;
 	elv_add_request(q, rq, ELEVATOR_INSERT_BACK, 1);
 	generic_unplug_device(q);