> > > if ( buffersNotAllocated ) AllocateBuffers(); //these are my
> > > defined functions
> > > ssize_t retval = 0 ;
> > > sRead.nOffset = 0;
> > > retval=usb_bulk_msg (my_dev, usb_rcvbulkpipe
> > > (my_dev,endpoint_r),sRead.pBuff, frame_size, &count, HZ*5);
> > > wait_for_urb (sRead.pUrb);
> >
> > Either use usb_bulk_msg() _or_ submit and wait on an URB.
> > Secondarily, you fail to handle AllocateBuffers() failing.
> >
>
> I don't exactly understand ... Should I use usb_bulk_msg with usb_submit_urb
> ?
No, you must not. Use either usb_submit_urb() and wait
_or_ use usb_bulk_msg(). Do _not_ mix them.
HTH
Oliver
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