> That's what I did. I disabled the if body (surrounded it by #if 0) and
> re-enabled the line that caused the freeze. The result is (apart from
> the flurry of printouts that I added) exactly equal to the original
> 2.6.16rc2 code, apart from this if body, which is commented out:
>
> if ((cap & EHCI_USBLEGSUP_BIOS)) {
> pr_debug("%s %s: BIOS handoff\n",
> pdev->dev.bus_id, "EHCI");
>
> /* BIOS workaround (?): be sure the
> * pre-Linux code receives the SMI
> */
> pci_read_config_dword(pdev,
> offset + EHCI_USBLEGCTLSTS,
> &val);
> pci_write_config_dword(pdev,
> offset + EHCI_USBLEGCTLSTS,
> val | EHCI_USBLEGCTLSTS_SOOE);
> }
>
> This is what I had understood. In this case, the machine does not
> freeze anymore, but the EHCI_USBLEGSUP_BIOS bit is not turned off in
> the following 5-second wait loop (USB goes on working OK)
Other people are seeing the same thing. Take a look at
http://bugzilla.kernel.org/show_bug.cgi?id=6011
Alan Stern
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