Subject: Re: [linux-usb-devel] Re: ATI RS480-based motherboard: stuck
while booting with kernel >= 2.6.15 rc1
Date: mar 07 feb 06 02:09:03 -0800
Quoting David Brownell ([EMAIL PROTECTED]):
> > Ok. I have commented out the whole if right after 1: - the one
> > beginning with
> >
> > if ((cap & EHCI_USBLEGSUP_BIOS)) {
> >
> > and uncommented the line that used to freeze my machine.
>
>
> You still didn't answer my question. What happens if you _only_ disable
> that "if" clause?
??
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)
If you meant something different, let me know.
Carlo
--
* Se la Strada e la sua Virtu' non fossero state messe da parte,
* K * Carlo E. Prelz - [EMAIL PROTECTED] che bisogno ci sarebbe
* di parlare tanto di amore e di rettitudine? (Chuang-Tzu)
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