Trever L. Adams wrote:
> On Fri, 2003-07-25 at 20:06, David Brownell wrote:
>
>
>>See if this patch resolves it.
>>
>>The patch adds an explicit reset to HCD initialization, and then makes
>>EHCI use it. (OHCI could do so even more easily ... but nobody's reported
>>firmware acting that type of strange with OHCI.) It should prevent IRQs
>>being enabled while the HC is still in an indeterminate state.
>>
>>This also fixes a missing local_irq_restore() that was generating some
>>annoying might_sleep() messages, and a missing readb() that affects some
>>ARM (and other) PCI systems.
>>
>>- Dave
>
>
> Applied it against test2. I think the problem is indeed ACPI handling
> PCI irqs. This is an nVidia nForce2 board, I should check to see if the
> patch someone posted fixes this (Did it get folded into test2?).
I think it got posted after test2 finalized; and the patches I
saw were line-wrapped so I couldn't even read them.
> Anyway, the first oops only happens if I have the mouse plugged in as
> USB (Intellimouse USB... I usually use the dumb little PS/2 adapter).
> The second happens now, but didn't before. It is 1394 related.
> Interrupts are at 100k+ on both usb and 1394 ohci almost instantly with
> ACPI on.
That's the symptom I saw when I tried ACPI + NForce2 (by accident)
a while back ... except that in your case it happens for IRQs
below 16 (which might be just an accident). "pci=noacpi" was a
workaround.
If this appears with that patch of mine applied, then I'd certainly
agree with you that this is something other than a USB problem.
- Dave
> irq 11: nobody cared!
> Call Trace:
> [<c010c12a>] __report_bad_irq+0x2a/0x90
> [<c010c21c>] note_interrupt+0x6c/0xb0
> ...
> [<c010a839>] sysenter_past_esp+0x52/0x71
>
> handlers:
> [<e087f350>] (usb_hcd_irq+0x0/0x60 [usbcore])
> Disabling IRQ #11
> ehci_hcd 0000:00:02.2: irq 11, pci mem e0815000
> ehci_hcd 0000:00:02.2: new USB bus registered, assigned bus number 1
>
>
> irq 4: nobody cared!
> Call Trace:
> [<c010c12a>] __report_bad_irq+0x2a/0x90
> [<c010c21c>] note_interrupt+0x6c/0xb0
> ...
> [<c010a839>] sysenter_past_esp+0x52/0x71
>
> handlers:
> [<e08536d0>] (ohci_irq_handler+0x0/0x720 [ohci1394])
> Disabling IRQ #4
>
> Anyway, so either it is ACPI and fixable, or I just forget pci routing
> with ACPI.
>
> Trever Adams
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This archive was generated by hypermail 2b29 : Thu Jul 31 2003 - 22:00:50 EST