rum_clrbits
static usb_error_t rum_clrbits(struct rum_softc *, uint16_t, uint32_t);
rum_clrbits(sc, RT2573_TXRX_CSR4, RT2573_SHORT_PREAMBLE);
rum_clrbits(sc, RT2573_TXRX_CSR9, 0x00ffffff);
rum_clrbits(sc, RT2573_TXRX_CSR0, RT2573_DROP_NOT_TO_ME);
rum_clrbits(sc, RT2573_MAC_CSR11, RT2573_AUTO_WAKEUP);
rum_clrbits(sc,
rum_clrbits(sc, RT2573_SEC_CSR0,
rum_clrbits(sc, (k->wk_keyix < 32) ? RT2573_SEC_CSR2 : RT2573_SEC_CSR3,
rum_clrbits(sc, RT2573_SEC_CSR4, 1 << rvp_id);
rum_clrbits(sc, RT2573_TXRX_CSR4, RT2573_ACKCTS_PWRMGT);
rum_clrbits(sc, RT2573_MAC_CSR11, RT2573_AUTO_WAKEUP);