On Wed, 18 Jul 2012, Markus wrote: > Hi Pete, > > thanks for you detailed reply. > > In the end it boils down to whether there is a chance to match > devices found by libusbx to a certain host controller. > > I can't see a generally reliable way to get my hands on the HC > information while at the same time, being able to infer which > devices are connected (by means of libusb_get_bus_number() result). > Do I overlook something here? > > Right now, I can reliably tell which devices share a common bus. > However, currently it's only Windows that returns the correct > VID/PID for the root hub.
That's a very strange statement. Root hubs don't have built-in VIDs or PIDs, so how can you say that Windows returns the correct values? Or to put it another way, since no single VID/PID combination is really correct for a root hub, the values returned by other operating systems are just as valid as the values returned by Windows. > So it looks as if there is no possible > way to tell which host controller model runs a given bus except > for Windows. Not true at all. It's certainly possible to find out that information in Linux. Alan Stern ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ libusbx-devel mailing list libusbx-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libusbx-devel
