Messages in this thread | | | Date | Tue, 09 Oct 2007 14:27:19 -0700 (PDT) | Subject | Re: [Linux-usb-users] OHCI root_port_reset() deadly loop... | From | David Miller <> |
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From: Alan Stern <stern@rowland.harvard.edu> Date: Tue, 9 Oct 2007 14:42:34 -0400 (EDT)
> On Tue, 9 Oct 2007, Greg KH wrote: > > > > Anyway, it certainly would be easy enough to make port resets mutually > > > exclusive with EHCI initialization. That would work on any platform, > > > PCI or not. > > > > That's a good idea, any thoughts as to how to do this? I think I can > > find some Intel and Dell people who would be glad to test this out if > > you have a proposed patch. > > Here is a proposed patch. I haven't tried running it, but it compiles > okay.
Are we sure that this is the only event that causes the conflicts between the EHCI and it's companion virtual OHCI/UHCI host(s)?
Is there a chip reset done to the EHCI controller early during device probe that could cause problems too?
I know it's grotty, but I definitely feel more comfortable with the fix involving making sure EHCI loads and fully probes first. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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