ide-floppy: convert ide_do_drive_cmd path to use blk_execute_rq

This converts the ide_do_drive_cmd path using ide_wait to use
blk_execute_rq.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Borislav Petkov <petkovbb@gmail.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

drivers/ide/ide-floppy.c

@@ -887,14 +887,16 @@ static ide_startstop_t idefloppy_do_request(ide_drive_t *drive,
 static int idefloppy_queue_pc_tail(ide_drive_t *drive, struct ide_atapi_pc *pc)
 {
 	struct ide_floppy_obj *floppy = drive->driver_data;
-	struct request rq;
+	struct request *rq;
+	int error;
 
-	ide_init_drive_cmd(&rq);
-	rq.buffer = (char *) pc;
-	rq.cmd_type = REQ_TYPE_SPECIAL;
-	rq.rq_disk = floppy->disk;
+	rq = blk_get_request(drive->queue, READ, __GFP_WAIT);
+	rq->buffer = (char *) pc;
+	rq->cmd_type = REQ_TYPE_SPECIAL;
+	error = blk_execute_rq(drive->queue, floppy->disk, rq, 0);
+	blk_put_request(rq);
 
-	return ide_do_drive_cmd(drive, &rq, ide_wait);
+	return error;
 }
 
 /*