PS2_CMD_MOUSE_SET_SCALE21
|| ps2_dev_command(dev, PS2_CMD_MOUSE_SET_SCALE21, NULL, 0, NULL, 0)
|| ps2_dev_command(dev, PS2_CMD_MOUSE_SET_SCALE21, NULL, 0, NULL, 0)
|| ps2_dev_command(dev, PS2_CMD_MOUSE_SET_SCALE21, NULL, 0, NULL, 0)
command = PS2_CMD_MOUSE_SET_SCALE21;