DCCR              618 drivers/tty/synclink.c #define usc_ClearIrqPendingBits( a, b ) usc_OutReg( (a), DCCR, 0x40 + (b) )
DCCR             3510 drivers/tty/synclink.c 	u16 Dccr = usc_InReg( info, DCCR );