If I understood your mail, the problem is that buf is 0. That's not always a problem for a usb td. It could be a 0-bytes transfer. Such thing is ok.
On Wed, Feb 4, 2009 at 3:50 PM, <kokam...@hera.eonet.ne.jp> wrote: >> control transfers may read/write 0 bytes. >> That's not the issue probably. > > No, I meant kernel tried to write to fd 0, not 0 byte. > > Kenji > > >
