diff options
Diffstat (limited to 'sound/firewire/amdtp.c')
| -rw-r--r-- | sound/firewire/amdtp.c | 22 |
1 files changed, 12 insertions, 10 deletions
diff --git a/sound/firewire/amdtp.c b/sound/firewire/amdtp.c index 2a153d260836..2bacb5173ff8 100644 --- a/sound/firewire/amdtp.c +++ b/sound/firewire/amdtp.c @@ -197,10 +197,10 @@ EXPORT_SYMBOL(amdtp_stream_add_pcm_hw_constraints); * The parameters must be set before the stream is started, and must not be * changed while the stream is running. */ -void amdtp_stream_set_parameters(struct amdtp_stream *s, - unsigned int rate, - unsigned int pcm_channels, - unsigned int midi_ports) +int amdtp_stream_set_parameters(struct amdtp_stream *s, + unsigned int rate, + unsigned int pcm_channels, + unsigned int midi_ports) { unsigned int i, sfc, midi_channels; @@ -209,15 +209,15 @@ void amdtp_stream_set_parameters(struct amdtp_stream *s, if (WARN_ON(amdtp_stream_running(s)) | WARN_ON(pcm_channels > AMDTP_MAX_CHANNELS_FOR_PCM) | WARN_ON(midi_channels > AMDTP_MAX_CHANNELS_FOR_MIDI)) - return; + return -EINVAL; - for (sfc = 0; sfc < ARRAY_SIZE(amdtp_rate_table); ++sfc) + for (sfc = 0; sfc < ARRAY_SIZE(amdtp_rate_table); ++sfc) { if (amdtp_rate_table[sfc] == rate) - goto sfc_found; - WARN_ON(1); - return; + break; + } + if (sfc == ARRAY_SIZE(amdtp_rate_table)) + return -EINVAL; -sfc_found: s->pcm_channels = pcm_channels; s->sfc = sfc; s->data_block_quadlets = s->pcm_channels + midi_channels; @@ -243,6 +243,8 @@ sfc_found: * (The value here is adjusted for midi_ratelimit_per_packet().) */ s->midi_fifo_limit = rate - MIDI_BYTES_PER_SECOND * s->syt_interval + 1; + + return 0; } EXPORT_SYMBOL(amdtp_stream_set_parameters); |