Am 10.06.2014 16:32, schrieb Alan Stern: > On Tue, 10 Jun 2014, Johan Hovold wrote: > >> On Tue, Jun 03, 2014 at 02:47:13PM +0200, Hendrik Borghorst wrote: >>> Hello, >>> >>> We are currently evaluating a new thinclient setup where we use usbip >>> vhci-hcd hostdriver to enable the support for usb devices over the network. >>> >>> We are testing several fpga programmers. One is an usb->serial adapter >>> which uses the ftdi_sio driver. >>> >>> After disconnecting the dongle on the thinclient, the kernel on the >>> vhci_hcd host got stuck. >>> >>> I really can't say if this is related to the vhci_hcd host driver but >>> for me it doesn't look like it. I think this problem is eventually >>> related to usbserial or usbcore. >> >> This looks like a host controller issue to me (stuck in usb_kill_urb), >> but perhaps Alan can say more? > > I agree. But I'm confused by the terminology. There's the vhci-hcd > host and the thinclient. Which one has the actual USB device and which > has the virtual host controller? > > The problem's root cause is on the computer attached to the physical > device. What host controller driver does that computer use? > > Alan Stern > Hello, the thinclient is the usbip-host. The VHCI-hcd module is loaded on our main server. The usbserial converter was attached at the thinclient with the xhci-hcd usb3 host driver. Hendrik Borghorst -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
