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Subject: RE: Linux 2.6.14 ehci-hcd hangs machine
Date: Mon, 31 Oct 2005 09:53:15 -0800
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Thread-Topic: Linux 2.6.14 ehci-hcd hangs machine
Thread-Index: AcXdJVEB+jFfWVnYRa+fj1BX2q5EQwBHg2gw
From: "Aleksey Gorelov" <Aleksey_Gorelov@Phoenix.com>
To: "Borislav Petkov" <bbpetkov@yahoo.de>,
       "Linus Torvalds" <torvalds@osdl.org>
Cc: "Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>,
       <dbrownell@users.sourceforge.net>, <greg@kroah.com>
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>-----Original Message-----
>From: linux-kernel-owner@vger.kernel.org 
>[mailto:linux-kernel-owner@vger.kernel.org] On Behalf Of 
>Borislav Petkov
>Sent: Sunday, October 30, 2005 12:36 AM
>To: Linus Torvalds
>Cc: Linux Kernel Mailing List; 
>dbrownell@users.sourceforge.net; greg@kroah.com
>Subject: Re: Linux 2.6.14 ehci-hcd hangs machine
>
>On Thu, Oct 27, 2005 at 05:28:50PM -0700, Linus Torvalds wrote:
>> 
>> Ok, it's finally there. 
>... and it still won't boot on my machine. It hangs while initializing
>the ehci usb host controller saying:
>
><snip>
>...
>[4294691.834000] usb usb3: Product: UHCI Host Controller
>[4294691.840000] usb usb3: Manufacturer: Linux 2.6.14 uhci_hcd
>[4294691.847000] usb usb3: SerialNumber: 0000:00:1d.2
>[4294691.880000] hub 3-0:1.0: USB hub found
>[4294691.885000] hub 3-0:1.0: 2 ports detected
>[4294694.855000] ACPI: PCI Interrupt 0000:00:1d.7[D] -> GSI 23 (level,
>				low) -> IRQ 20
>[4294694.864000] ehci_hcd 0000:00:1d.7: EHCI Host Controller
>[4294694.870000] ehci_hcd 0000:00:1d.7: debug port 1
></snip>
>
>and dies. This bug is actually in there since 2.6.14-rc4 (see:
>http://bugzilla.kernel.org/show_bug.cgi?id=5428) and David Brownell
>supplied a patch which turned out to be useless eventually 
>since _rebooting_ 
>the kernel with the 'usb-handoff' (and without the patch) 
>solved the problem. 
>As it turns out, it actually solves the problem only for the 
>reboot case.
>My machine still hangs on an initial boot with and without 
>'usb-handoff'.
>.config attached.

Boris, 

  While running with 'usb-handoff' turned on, do you see something like
"EHCI early BIOS handoff failed" (in power on or reboot cases) ? 

Aleks.

>
>Regards,
>		Boris.
>
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