On Thu, Jul 25, 2013 at 4:04 PM, Egli, Samuel <samuel.e...@siemens.com> wrote: > Hi all, > > I want to report (what I belief is) a bug on the windows implementation of > libusbx. > The issue arose using dfu-util (which uses libusbx) when changing from an > older > U-Boot version (v2011-09) to the current one (v2013-07). This topic was also > discussed on dfu-util mailing list. > > I seems to be an windows issue because on linux I don't have any problem. > However, > with older dfu implementation on u-boot it worked fine on both OSes. > > So I did tests with latest release libusbx-1.0.16. I compiled this for linux > and windows. Debug code added by me is prefixed with "DDD->" and is placed in > dfu-util code. > > Log for dfu-util -a 1 -D MLO -v -v -v > > Linux: http://pastebin.com/iq80kg0p -> ok > Win: http://pastebin.com/Ax7RDFHk -> fails > > > Here the log for lsusb on linux for the different u-boot versions > > U-Boot v2011-09: http://pastebin.com/jeC01WxQ > U-Boot v2013-07: http://pastebin.com/mvNLkUAs > > > It is interesting to make diff between the last two logs. > > I'm assuming that there is some problem with bConfigurationValue in the new > U-Boot version. But I still need to further investigate on this. > To me it looks like, even though bNumConfigurations=1 in both u-boot > versions, libusb has a problem on windows (only) that bConfigurationValue=2. > > I added some debug code windows_usb.c. This shows that > "config_index >= dev->num_configurations" becomes > "1 >= 1" > and finally leads to return LIBUSB_ERROR_INVALID_PARAM. > > I will try to "fix" the device descriptor on the u-boot side. Anyway it's > probably good let you know about this. > > Best > Sam
Adding libusbx mailing list in the CC. -- Xiaofan ------------------------------------------------------------------------------ See everything from the browser to the database with AppDynamics Get end-to-end visibility with application monitoring from AppDynamics Isolate bottlenecks and diagnose root cause in seconds. Start your free trial of AppDynamics Pro today! http://pubads.g.doubleclick.net/gampad/clk?id=48808831&iu=/4140/ostg.clktrk _______________________________________________ libusbx-devel mailing list libusbx-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libusbx-devel
