tb_switch_wait_for_bit
ret = tb_switch_wait_for_bit(sw, offset,
int tb_switch_wait_for_bit(struct tb_switch *sw, u32 offset, u32 bit,
return tb_switch_wait_for_bit(sw, ROUTER_CS_6, ROUTER_CS_6_CR,
return tb_switch_wait_for_bit(sw, ROUTER_CS_6, ROUTER_CS_6_SLPR,
ret = tb_switch_wait_for_bit(sw, ROUTER_CS_26, ROUTER_CS_26_OV, 0, 500);