I_HMB_FC_CHANGE
if (intstatus & I_HMB_FC_CHANGE) {
intstatus &= ~I_HMB_FC_CHANGE;
brcmf_sdiod_writel(sdiod, intstat_addr, I_HMB_FC_CHANGE, &err);
!!(newstatus & (I_HMB_FC_STATE | I_HMB_FC_CHANGE)));