Hi, Hope this is the right place to mention/post this; I'm new to this. As a point of reference, I'm running uClinux on a bf609-ezkit that is based on 3.10, but from what I can tell this hasn't been changed/fixed since 3.10 yet and applies in general.
As per section 4.3.2 of Universal Serial Bus Device Class Definition for Audio Devices (audio10.pdf), and section B.3.3.2 by example, the bInCollection field of the Class-Specific AudioControl (AC) Interface Header Descriptor is the number of AudioStreaming (AS) and MIDIStreaming (MS) interfaces for the given AC interface. Similarly, the baInterfaceNr collection is only to list the AS and MS interfaces. In f_uac1.c, the AC header descriptor states that it has 2 interfaces in its collection, one of those being the AC interface itself. This, at least, causes Windows 7 to not enumerate the device correctly. Changing the relative lines to make is only have 1 interface listed fixes enumeration on Windows 7. (I know I should provide a patch for this, but I'm still reading up on the proper way to submit these). Interface numbering should be dynamic. Currently, the value(s) in the baInterfaceNr collection are not updated when retrieved in f_audio_bind(). I have not tried this myself yet, but should be easy to implement/understand. If this all makes sense, I'll post a patch here (anywhere else, too?). Thanks, Ken -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
