Hi Juan, On Tue, Nov 21, 2017 at 12:24:01PM +0100, Juan Zea wrote: > Please excuse me... I have reported two different problems in this post, > and I think things are mixing up a bit. My bad. I've found two different > problems: > > 1.- When compiling vhci driver with multiple hubs (in latest kernel), usbip > tool doesn't seem able to "jump" to the second controller. As far as I > understand, it seems to be a problem with high speed devices trying to get > connected to super speed ports. I made a patch for avoiding this situation > which is almost the same as the one you just sent. Both patches work. I can > compile with several hubs of one port, and connect two devices via usbip and > the second gets connected to the second controller (skipping the super speed > port of first controller). > > 2.- The problem is some of these devices don't work, whatsoever controller or > hub compiling configuration I do. A fingerprint reader and also recently > discovered flash usb sticks don't work either. You can connect them with > usbip tool, and they list with lsusb with no problem at all. But when you try > to use them, you get this "kernel BUG at drivers/usb/usbip/vhci_hcd.c:669!" > (by the way, the line number has changed in the latest pull from master I've > just tested, but it's the same line of code). This second problem is the one > I bisected in my last message. And I got to the commit > 03cd00d538a6feb0492cd153edf256ef7d7bd95e, in which both devices stop working. It'd be good if you can give greater detail of the exact (as much info as possible) setting of the fingerprint reader case.
> The patch you sent fixes 1 but not 2. And yes, I'm using non-super-speed > devices for testing. This was what I understood. Just want to make sure we are on the same page. > I hope this helped, and sorry for the mess, Yes, it helped. My sincere apologies for the mess I created! Thanks, Yuyang -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
