[Bug 179376] xhci ehci irq storm

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Mon Dec 8 21:19:36 UTC 2014


https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=179376

Hans Petter Selasky <hselasky at FreeBSD.org> changed:

           What    |Removed                     |Added
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                 CC|                            |hselasky at FreeBSD.org

--- Comment #10 from Hans Petter Selasky <hselasky at FreeBSD.org> ---
Hi,

If you set hw.usb.ehci.debug=16

and it doesn't print a real interrupt has occurred, then it is most likely not
the EHCI which is generating those interrupts. I guess something is broken in
the PCI/ACPI IRQ interaction with the kernel, like how the interrupt is
configured.

--HPS

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