Re: Linux USB file storage gadget with new UDC

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On Tue, 8 Jan 2013, victor yeo wrote:

> > This log looks oddly incomplete.  A lot of debugging messages are
> > missing.
> >
> >> g_file_storage gadget: ep0-setup, length 8:
> >> 00000000: 80 06 00 01 00 00 40 00
> >> g_file_storage gadget: get device descriptor
> >
> > For example, right here we should see the device descriptor data that
> > was sent back to the host.
> 
> I checked the log again, the dmesg log did not contain that info. May
> i know which part of the gadget code will print out the device
> descriptor data that was sent back to the host?

ep0_complete(), where it calls dump_msg().

> > Where does the enumeration repeat?  I don't see any repeats here, aside
> > from the fact that Windows asks for the same device and config
> > descriptors a few times.
> 
> Why is the Windows asking for the same device and config descriptors
> several times?

I know very little about Windows.  You'll have to ask the programmers 
at Microsoft.  :-)

Alan Stern

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