Hi Hans I tried the patch and the result is the same. However, I found the command that causes the freeze. Also, it is not always it freezes but maybe 9/10 reboots or more frequently. At the end of the function xhci_start_controller(..) there is a for loop: 487 for (i = 0; i != 100; i++) { 488 usb_pause_mtx(NULL, hz / 100); 489 temp = XREAD4(sc, oper, XHCI_USBSTS) & XHCI_STS_HCH; 490 if (!temp) 491 break; 492 } and it freezes at usb_pause_mtx(...) value of i is 0 value of hz is 1000 Johannes Lundberg BRILLIANTSERVICE CO., LTD. <http://www.brilliantservice.co.jp> On Fri, Aug 30, 2013 at 8:42 AM, Hans Petter Selasky <hps_at_bitfrost.no>wrote: > On 08/30/13 08:09, Lundberg, Johannes wrote: > >> What I got so far is this; >> >> USB driver from current stops after >> xhci0: 32 byte context size >> >> While driver from 9.1 continues to the next step which is >> usbus0 on xhci0 >> xhci0: usbpf: Attached >> ... >> >> I can try adding some printf's in the code and see if I get some more.. >> >> > Hi, > > There are only a few commits to the xhci driver since 9.1 was releases, so > this should be easy to figure out. > > I'm doing a wild guess. Can you try the attached patch. It will ensure > that any BIOS generated interrupts get cleared before we reset the > controller. > > --HPS > >Received on Fri Aug 30 2013 - 07:35:35 UTC
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