Re: [linux-usb-devel] [PATCH] proper bios handoff in ehci-hcd

[Olaf Hering <olh@suse.de>]

 On Tue, Jun 15, David Brownell wrote:

> Gary_Lerhaupt@Dell.com wrote:
> >Stuart Hayes here at Dell has identified this or/and mix-up in the
> >ehci-hcd driver.  Because of this, ehci-hcd is not properly released by
> >BIOSes supporting full 2.0 and port behavior can then become erratic.
> 
> Good patch, it should be merged.  That handoff code actually
> predates general availability of BIOSes handling _any_ EHCI
> controllers, and your patch resolves a problem I'd seen on a
> newish board but hadn't yet had time to track down (beyond
> knowing that broken BIOS handoff was the issue).

David,

there are 2 reports about breakage by this patch. One is on lkml, and
another one is in my bugzilla inbox. How can we fix that one? I assume
that handoff patch is correct.

  <6>NET: Registered protocol family 17
  <3>ehci_hcd 0000:00:1d.7: BIOS handoff failed (104, 1010001)
  <3>ehci_hcd 0000:00:1d.7: can't reset
  <3>ehci_hcd 0000:00:1d.7: init 0000:00:1d.7 fail, -95
  <4>ehci_hcd: probe of 0000:00:1d.7 failed with error -95

this is a FSC Amilo D7830 notebook, the guy on lkml has a  Asus P4P800 board.

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