On Thu, Nov 3, 2011 at 3:58 AM, Rafael J. Wysocki <rjw@xxxxxxx> wrote:
>
> The PCI subsystem may still be the source of it, except that I'm not
> aware of any mechanism in there that may resume the USB controllers
> only without touching the other devices. Are the USB controllers
> related to each other somehow PCI-wise (I mean, are they functions of the
> same device or something like this)?
No, they're not even the same manufacturer - Intel doesn't do USB3 in
their chipsets yet afaik, so a lot of vendors who decide they need to
have a USB3 port add a separate chip for it.
The ehci ports are on the same device, though.So the fact that
plugging in somethign into one of them wakes up the other I don't find
too surprising. It's the xhci connection that is so odd.
Linus
--
To unsubscribe from this list: send the line "unsubscribe linux-pci" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
