OK, thanks. I made a commit in my local repository (and set the hooks
according to the Wiki). How can I get a write access to push it?
Zoltan
2013/1/24 Xiaofan Chen <xiaof...@gmail.com>
> On Mon, Jan 21, 2013 at 1:03 AM, Zoltán Kovács <0x4...@gmail.com> wrote:
> > Hi,
> >
> > I use libusbx on Linux to communicate with a weather station. I use
> > libusb_interrupt_transfer call to get data from the device. Sometimes
> there
> > is a communication error with the device:
> > [372849.680990] [0000275b] libusbx: error [reap_for_handle] reap failed
> > error -1 errno=14
> > [372849.681752] [0000275b] libusbx: error [handle_events] backend
> > handle_events failed with error -1
> > [372850.680466] [0000275b] libusbx: warning [handle_timeout] async cancel
> > failed -5 errno=22
> >
> > in this case the program does not return from libusb_interrupt_transfer,
> so
> > I cannot handle the error in my code. I made some debugging and I think
> > found a bug in do_sync_bulk_transfer function: the return value of
> > libusb_cancel_transfer not handled. If this function returns with error,
> the
> > while loop never ends.
> > My proposed fix:
> > pi@raspberrypi ~/homectrl/libusbx-1.0.14/libusb $ diff sync_old.c sync.c
> > 186,189c186,189
> > < libusb_cancel_transfer(transfer);
> > < while (!completed)
> > < if (libusb_handle_events_completed(HANDLE_CTX(dev_handle), &completed)
> <
> > 0)
> > < break;
> > ---
> >> if(libusb_cancel_transfer(transfer) == 0)
> >> while (!completed)
> >> if (libusb_handle_events_completed(HANDLE_CTX(dev_handle), &completed) <
> >> 0)
> >> break;
> >
> > the same problem exists in the libusb_control_transfer function, too. I
> > tested this and seems this solves the problem.
> > If you agree, please correct the code according to this.
>
> Seems to make sense to me.
>
>
> --
> Xiaofan
>
>
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