mpc52xx_psc_isr
if (in_be16(&psc->mpc52xx_psc_isr) & MPC52xx_PSC_IMR_RXRDY) {
return in_be16(&PSC(port)->mpc52xx_psc_isr)
return in_be16(&PSC(port)->mpc52xx_psc_isr)
isr = in_be16(®s->mpc52xx_psc_isr);