ELANTECH_CMD_REGISTER_READWRITE
|| ps2_dev_command(dev, ELANTECH_CMD_REGISTER_READWRITE) != B_OK
|| ps2_dev_command(dev, ELANTECH_CMD_REGISTER_READWRITE) != B_OK
|| ps2_dev_command(dev, ELANTECH_CMD_REGISTER_READWRITE) != B_OK
|| ps2_dev_command(dev, ELANTECH_CMD_REGISTER_READWRITE)