RE: EHCI errors in 2.6.8 (could be a patch mistake)

[Aleksey Gorelov]

>I've patched my fully working 2.6.7 kernel to the 2.6.8 and I 
>got these errors 
>at boot time (no errors during patch and compilation using the 
>same config of 
>the 2.6.7 kernel):
>
>ehci_hcd 0000:00:1d.7: BIOS handoff failed (104, 1010001)
>ehci_hcd 0000:00:1d.7: can't reset
>ehci_hcd 0000:00:1d.7: init 0000:00:1d.7 fail, -95
>ehci_hcd: probe of 0000:00:1d.7 failed with error -95
>
>In this condition the hotplugging of USB devices doesn't work at all!
>The host controller is an Intel Corp. 82801DB (ICH4) USB2 EHCI 
>and it fully 
>work with the 2.6.7. Looking into the patched and original code of the 
>ehci-hcd driver I've noticed that some changes has been maded 
>but the only 
>one that can influence the BIOS handoff is the following:
>
>kernel 2.6.7 - line 296: cap &= 1 << 24;
>kernel 2.6.8 - line 296: cap |= 1 << 24;
                          ^^^^^^^^^^^^^^
This is correct in accordance with EHCI spec.
Could you please try the following patch and see how it goes ?
http://www.mail-archive.com/linux-usb-devel@xxxxxxxxxxxxxxxxxxxxx/msg270
89.html
Make sure you specify 'usb-handoff' as a kernel parameter.

Pete,
  BTW is this one a 'no go' or just got lost ?

Aleks.
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