bwn_core_forceclk
if ((error = bwn_core_forceclk(mac, true)))
static int bwn_core_forceclk(struct bwn_mac *, bool);
if ((error = bwn_core_forceclk(mac, true)))
bwn_core_forceclk(mac, true);
bwn_core_forceclk(mac, false);