static inline void set_default_fcs(struct l2cap_chan *chan)
{
	/* FCS is enabled only in ERTM or streaming mode, if one or both
	 * sides request it.
	 */
	if (chan->mode != L2CAP_MODE_ERTM && chan->mode != L2CAP_MODE_STREAMING)
		chan->fcs = L2CAP_FCS_NONE;
	else if (!test_bit(CONF_RECV_NO_FCS, &chan->conf_state))
		chan->fcs = L2CAP_FCS_CRC16;
}
static inline void set_default_fcs(struct l2cap_chan *chan)
{
	 
	if (chan->mode != L2CAP_MODE_ERTM && chan->mode != L2CAP_MODE_STREAMING)
		chan->fcs = L2CAP_FCS_NONE;
	else if (!test_bit(CONF_RECV_NO_FCS, &chan->conf_state))
		chan->fcs = L2CAP_FCS_CRC16;
}