#12885: XHCI page fault under skylake
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Reporter: kallisti5 | Owner: nobody
Type: bug | Status: assigned
Priority: normal | Milestone: Unscheduled
Component: Drivers/USB/XHCI | Version: R1/Development
Resolution: | Keywords: skylake
Blocked By: | Blocking:
Has a Patch: 0 | Platform: All
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Comment (by kallisti5):
For the "more ports than we support number" I've *finally* found a
reference for a sane value. (The xHCI specs don't really mention this
limit). Our USB driver unsurprisingly works a lot like FreeBSD's They
have a MAX_USB_PORTS define they use in their hub code to iterate over the
hub ports... their limit is 255.
https://github.com/freebsd/freebsd/blob/master/sys/dev/usb/usb_freebsd.h#L82
Sounds like I can at least change that to something better with a little
backing knowledge now.
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Ticket URL: <https://dev.haiku-os.org/ticket/12885#comment:13>
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