43 	int err;  in init_stream()  local
53 	err = fw_iso_resources_init(resources, ff->unit);  in init_stream()
54 	if (err < 0)  in init_stream()
55 		return err;  in init_stream()
57 	err = amdtp_ff_init(s, ff->unit, dir);  in init_stream()
58 	if (err < 0)  in init_stream()
61 	return err;  in init_stream()
76 	int err;  in snd_ff_stream_init_duplex()  local
78 	err = init_stream(ff, &ff->rx_stream);  in snd_ff_stream_init_duplex()
79 	if (err < 0)  in snd_ff_stream_init_duplex()
80 		return err;  in snd_ff_stream_init_duplex()
82 	err = init_stream(ff, &ff->tx_stream);  in snd_ff_stream_init_duplex()
83 	if (err < 0) {  in snd_ff_stream_init_duplex()
85 		return err;  in snd_ff_stream_init_duplex()
88 	err = amdtp_domain_init(&ff->domain);  in snd_ff_stream_init_duplex()
89 	if (err < 0) {  in snd_ff_stream_init_duplex()
94 	return err;  in snd_ff_stream_init_duplex()
115 	int err;  in snd_ff_stream_reserve_duplex()  local
117 	err = ff->spec->protocol->get_clock(ff, &curr_rate, &src);  in snd_ff_stream_reserve_duplex()
118 	if (err < 0)  in snd_ff_stream_reserve_duplex()
119 		return err;  in snd_ff_stream_reserve_duplex()
138 		err = snd_ff_stream_get_multiplier_mode(i, &mode);  in snd_ff_stream_reserve_duplex()
139 		if (err < 0)  in snd_ff_stream_reserve_duplex()
140 			return err;  in snd_ff_stream_reserve_duplex()
142 		err = amdtp_ff_set_parameters(&ff->tx_stream, rate,  in snd_ff_stream_reserve_duplex()
144 		if (err < 0)  in snd_ff_stream_reserve_duplex()
145 			return err;  in snd_ff_stream_reserve_duplex()
147 		err = amdtp_ff_set_parameters(&ff->rx_stream, rate,  in snd_ff_stream_reserve_duplex()
149 		if (err < 0)  in snd_ff_stream_reserve_duplex()
150 			return err;  in snd_ff_stream_reserve_duplex()
152 		err = ff->spec->protocol->allocate_resources(ff, rate);  in snd_ff_stream_reserve_duplex()
153 		if (err < 0)  in snd_ff_stream_reserve_duplex()
154 			return err;  in snd_ff_stream_reserve_duplex()
156 		err = amdtp_domain_set_events_per_period(&ff->domain,  in snd_ff_stream_reserve_duplex()
158 		if (err < 0) {  in snd_ff_stream_reserve_duplex()
161 			return err;  in snd_ff_stream_reserve_duplex()
170 	int err;  in snd_ff_stream_start_duplex()  local
188 		err = ff->spec->protocol->begin_session(ff, rate);  in snd_ff_stream_start_duplex()
189 		if (err < 0)  in snd_ff_stream_start_duplex()
192 		err = amdtp_domain_add_stream(&ff->domain, &ff->rx_stream,  in snd_ff_stream_start_duplex()
194 		if (err < 0)  in snd_ff_stream_start_duplex()
197 		err = amdtp_domain_add_stream(&ff->domain, &ff->tx_stream,  in snd_ff_stream_start_duplex()
199 		if (err < 0)  in snd_ff_stream_start_duplex()
206 		err = amdtp_domain_start(&ff->domain, 0, true, true);  in snd_ff_stream_start_duplex()
207 		if (err < 0)  in snd_ff_stream_start_duplex()
211 			err = -ETIMEDOUT;  in snd_ff_stream_start_duplex()
215 		err = ff->spec->protocol->switch_fetching_mode(ff, true);  in snd_ff_stream_start_duplex()
216 		if (err < 0)  in snd_ff_stream_start_duplex()
225 	return err;  in snd_ff_stream_start_duplex()
256 	int err;  in snd_ff_stream_lock_try()  local
262 		err = -EBUSY;  in snd_ff_stream_lock_try()
269 	err = 0;  in snd_ff_stream_lock_try()
272 	return err;  in snd_ff_stream_lock_try()