Re: [linux-usb-devel] oops when loading ehci_hcd

From: Bill Nottingham
Date: Fri Apr 16 2004 - 13:45:09 EST

David Brownell (david-b@xxxxxxxxxxx) said:
> Bill Nottingham wrote:
> >With a 2.6.6-rc1 based kernel. Happened when loading ehci_hcd some
> >10 hours after booting, couldn't reproduce in initial attempts. I
> >suppose the question is also why it failed to init, but it certainly
> >didn't like the failure...
> Hmm, no it didn't. The "illegal capability" is the hardware acting
> broken (what kind of EHCI hardware?); I've had reports of similar
> stuff happening after ACPI resume (bogus PCI config space values,
> in this case zero).

In fact, I believe I did do suspend/resume at some point previous
in the day. Thinkpad T40p - the ACPI suspend/resume probably explains
why it didn't happen again after reboot.

> --- 1.75/drivers/usb/host/ehci-hcd.c Wed Apr 14 20:20:58 2004
> +++ edited/drivers/usb/host/ehci-hcd.c Fri Apr 16 11:03:50 2004
> @@ -592,7 +592,8 @@
> /* root hub is shut down separately (first, when possible) */
> spin_lock_irq (&ehci->lock);
> - ehci_work (ehci, NULL);
> + if (ehci->async)
> + ehci_work (ehci, NULL);
> spin_unlock_irq (&ehci->lock);
> ehci_mem_cleanup (ehci);

Will try that at some point, thanks!


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