MHUV3_FLAG_BITS
if (channel >= e->num_chans || doorbell >= MHUV3_FLAG_BITS) {
return &chans[e->base_ch_idx + channel * MHUV3_FLAG_BITS + doorbell];
for (k = 0; k < MHUV3_FLAG_BITS; k++) {
channel = i * MHUV3_FLAG_BITS + __ffs(cmb_st);
return &mhu->mbox.chans[channel * MHUV3_FLAG_BITS + db];
mhu->num_chans += e->num_chans * MHUV3_FLAG_BITS;