+
+/* Send basic block requests */
+static int __blk_send_generic(request_queue_t *q, struct gendisk *bd_disk, int cmd, int data)
+{
+ struct request *rq;
+ int err;
+
+ rq = blk_get_request(q, WRITE, __GFP_WAIT);
+ rq->flags |= REQ_BLOCK_PC;
+ rq->data = NULL;
+ rq->data_len = 0;
+ rq->timeout = BLK_DEFAULT_TIMEOUT;
+ memset(rq->cmd, 0, sizeof(rq->cmd));
+ rq->cmd[0] = cmd;
+ rq->cmd[4] = data;
+ rq->cmd_len = 6;
+ err = blk_execute_rq(q, bd_disk, rq, 0);
+ blk_put_request(rq);
+
+ return err;
+}
+
+static inline int blk_send_start_stop(request_queue_t *q, struct gendisk *bd_disk, int data)
+{
+ return __blk_send_generic(q, bd_disk, GPCMD_START_STOP_UNIT, data);
+}
+