Re: 2.6.15 EHCI hang on boot

[Ben Dooks <ben-linux@fluff.org>]

On Wed, Jan 04, 2006 at 05:18:44PM +0100, Marc Haber wrote:
> Hi,
> 
> I have rolled out 2.6.15 on a number of test hosts. On one of my
> boxes, which is by far the most recent one, has an i865 chipset, hangs
> on boot when the EHCI driver is loaded. USB is not compiled as module,
> so the system doesn't come up at all:
> 
> ACPI: PCI Interrupt 0000:00:1d.7[D] -> GSI 23 (level, low) -> IRQ 18
> ehci_hcd 0000:00:1d.7: EHCI Host Controller
> ehci_hcd 0000:00:1d.7: debug port 1
> 
> These are the last lines of the boot log (which I have completely
> captured via serial console and can submit on request).
> 
> The EHCI controller's lspci output (obtained with 2.6.14.3):
> 0000:00:1d.7 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB2 EHCI
>  Controller (rev 02) (prog-if 20 [EHCI])
>         Subsystem: Micro-Star International Co., Ltd. 865PE Neo2 (MS-6728)
>         Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
>         Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort - <MAbort- >SERR- <PERR-
>         Latency: 0
>         Interrupt: pin D routed to IRQ 18
>         Region 0: Memory at febffc00 (32-bit, non-prefetchable) [size=1K]
>         Capabilities: [50] Power Management version 2
>                 Flags: PMEClk- DSI- D1- D2- AuxCurrent=375mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
>                 Status: D0 PME-Enable- DSel=0 DScale=0 PME-
>         Capabilities: [58] #0a [20a0]
> (complete lspci output available on request)
> 
> The 2.6.14.3 kernel which was installed on that box before works fine.
> The 2.6.15 configuration is the result of make oldconfig over that
> 2.6.14.3 kernel, so I suspect that the configurations are sufficiently
> similiar, and the same 2.6.15 binary works fine on other systems which
> have their EHCI as PCI cards.
> 
> I suspect an incompatibility with the i865 chipset. Is there anything
> I can do to help debugging?

I have the same (but only intermittently) on an Intel i875 based
board by MSI. In about 25% of the cases it manages to boot past
these lines, and initialise the mouse connected. 

The usb bus has a low-speed Microsoft mouse on it, and a
USB 1.1 Hub, with a card reader and serial dongle connected.

-- 
Ben (ben@fluff.org, http://www.fluff.org/)

  'a smiley only costs 4 bytes'
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