AHC_RESET_BUS_A
ahc->flags |= AHC_RESET_BUS_A;
ahc->flags &= ~(AHC_RESET_BUS_A|AHC_RESET_BUS_B);
if ((ahc->flags & AHC_RESET_BUS_A) != 0)
if ((ahc->flags & (AHC_RESET_BUS_A|AHC_RESET_BUS_B)) != 0) {