diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/class/audio/audio_host.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/src/class/audio/audio_host.c b/src/class/audio/audio_host.c index 2aad4040e..c29db658c 100644 --- a/src/class/audio/audio_host.c +++ b/src/class/audio/audio_host.c @@ -798,7 +798,6 @@ uint16_t audioh_open(uint8_t rhport, uint8_t dev_addr, const tusb_desc_interface uint8_t usb_input_terminal_id = 0; uint8_t usb_output_source_id = 0; - bool found_as_interface = false; // A Feature Unit may precede the USB terminal that identifies its stream. typedef struct { uint8_t id; @@ -887,15 +886,14 @@ uint16_t audioh_open(uint8_t rhport, uint8_t dev_addr, const tusb_desc_interface break; } - found_as_interface = true; TU_LOG_DRV(" Found AS Interface %u (alt = %u)\r\n", desc_interface->bInterfaceNumber, desc_interface->bAlternateSetting); p_desc = audioh_parse_as(p_audio, desc_interface, p_desc, desc_end); } - // This AC interface belongs to MIDI or another Audio subclass. Release the - // tentative instance and let the next class driver claim the interface. - if (!found_as_interface) { + // Release the tentative instance when no supported stream configuration was + // collected, including MIDI-only and unsupported Audio functions. + if (p_audio->in_stream.config_count == 0 && p_audio->out_stream.config_count == 0) { audioh_stream_reset(&p_audio->in_stream); audioh_stream_reset(&p_audio->out_stream); p_audio->daddr = 0; |