mt7601u_usb_submit_buf
ret = mt7601u_usb_submit_buf(dev, USB_DIR_OUT, MT_EP_OUT_INBAND_CMD,
ret = mt7601u_usb_submit_buf(dev, USB_DIR_IN, MT_EP_IN_CMD_RESP,
ret = mt7601u_usb_submit_buf(dev, USB_DIR_IN, MT_EP_IN_CMD_RESP,
int mt7601u_usb_submit_buf(struct mt7601u_dev *dev, int dir, int ep_idx,