On Mon, 2004-07-19 at 02:35, Peter 'p2' De Schrijver wrote:
> On Tue, Jul 13, 2004 at 06:41:19PM -0700, Bill Randle wrote:
> > I search this list, as well as the developer's list, but didn't
> > see anything appropriate regarding the problems I'm having with a
> > Philips isp1561 USB hub. [If I missed it, please enlighten me!]
> >
> > I have a Peritek Argus graphics board that contains 5 pci devices
> > and two pci-pci bridges, with one of the devices a Philips isp1561.
> > Linux (kernel 2.6.3-13mdk) detects the usb hub and the devices
> > connected to it (on board usb audio) and extern usb mouse & keyboard.
> > The problem is, once X starts, the mouse and keyboard lockup shortly
> > thereafter. The error message in /var/log/messages is:
[cut]
> > Does anyone have any ideas what's going on or how to fix it? Are there
> > usb driver updates since 2.6.3 that might fix it?
>
> Some versions of the philips isp1561 have a few bugs which need software
> workarounds.
>
> 1) The isp1561 accepts PCI burst writes to the register file, although
> it does not handle them properly. Workaround is to avoid PCI burst
> writes to the register file by adding dummy reads.
>
> 2) The isp1561 fails to transfer data correctly if you do a control
> transfer of 1 byte and the buffer is aligned on a 4K boundary.
>
> I have some patches for an older kernel version which solved the
> problems in my case. You might have to adapt them to a more recent
> kernel version.
Thanks for the suggestions, Peter. I applied the patches to my 2.6.7
kernel source, but still have USB lockups while using the keyboard.
It completely hoses the system, requiring a power cycle.
-Bill
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