TEST_LBACK        618 drivers/net/can/c_can/c_can.c 		priv->write_reg(priv, C_CAN_TEST_REG, TEST_LBACK | TEST_SILENT);
TEST_LBACK        622 drivers/net/can/c_can/c_can.c 		priv->write_reg(priv, C_CAN_TEST_REG, TEST_LBACK);