[haiku-bugs] Re: [Haiku] #12885: XHCI page fault under skylake

  • From: "korli" <trac@xxxxxxxxxxxx>
  • Date: Tue, 02 Aug 2016 05:42:40 -0000

#12885: XHCI page fault under skylake
--------------------------------+----------------------------
   Reporter:  kallisti5         |      Owner:  korli
       Type:  bug               |     Status:  new
   Priority:  normal            |  Milestone:  Unscheduled
  Component:  Drivers/USB/XHCI  |    Version:  R1/Development
 Resolution:                    |   Keywords:  skylake
 Blocked By:                    |   Blocking:
Has a Patch:  0                 |   Platform:  All
--------------------------------+----------------------------

Comment (by korli):

 Replying to [comment:8 kallisti5]:

So this looks like a USB host controller that supports more than one
 bus?  I wonder if EHCI did that.

 No, the XHCI Linux driver chooses to expose two root hubs (2.0 and 3.x),
 each port is present on both hubs. If a USB2 device is connected, it
 appears on the 2.0 root hub, otherwise on the 3.x root hub.

 It might help if you could try with TRACE_USB enabled.

--
Ticket URL: <https://dev.haiku-os.org/ticket/12885#comment:9>
Haiku <https://dev.haiku-os.org>
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