LPC32XX_HSU_BRK_INT
if (status & LPC32XX_HSU_BRK_INT) {
writel(LPC32XX_HSU_BRK_INT, LPC32XX_HSUART_IIR(port->membase));
writel((LPC32XX_HSU_BRK_INT | LPC32XX_HSU_RX_OE_INT |
LPC32XX_HSU_BRK_INT | LPC32XX_HSU_RX_OE_INT),
LPC32XX_HSU_BRK_INT | LPC32XX_HSU_RX_OE_INT),