Re: [Qemu-devel] [PATCH 0/3] usb-mtp: fix ObjectInfo request handling

[Bandan Das]

Daniel P. Berrangé <address@hidden> writes:

>> I can't find usb-mtp sending a "I/O error" on an error condition
>> for the objectinfo phase. It might be libmtp or even the command itself
>> failing for some reason. For incomplete transfer, I just checked, it's
>> spitting out the error message correctly as INCOMPLETE_FILE_TRANSFER.
>> 
>> With libmtp version 1.13 on a FC24 guest, here's the output:
>> 
>> $ mtp-sendfile test.txt test.img
>> libmtp version: 1.1.13
>> 
>> Device 0 (VID=46f4 and PID=0004) is UNKNOWN in libmtp v1.1.13.
>> Please report this VID/PID and the device model to the libmtp development 
>> team
>> ignoring libusb_claim_interface() = -6PTP_ERROR_IO: failed to open session, 
>> trying again after resetting USB interface
>> LIBMTP libusb: Attempt to reset device
>> Sending test.txt to test.img
>> type: txt, 44
>> Sending file...
>> Progress: 322 of 322 (100%)
>> New file ID: 7
>> 
>> What guest is this ? I can try to reproduce.
>
> This was Fedora 26, so technically it is end of life, but then so
> is your F24 guest :-)
>
> Should really check with a modern guest like Fedora 29 or rawhide.
>
I had a F28 guest and here, mtp-sendfile appears to succeed but no file is 
written
However, nautilus works fine, it doesn't appear like an issue with libmtp
or Qemu.

> Regards,
> Daniel