On Wed, 30 May 2007, Olof Kindgren wrote:
> I'm trying to optimize my system for soundrecording and I need USB, but
> one of the USB-controllers uses the same IRQ as my sound card and I can't
> disable that controller in BIOS. Is it possible to load the ushi-usb
> module without enabling all controllers?
It's possible to do it in Linux 2.6 (I'm not so sure about 2.4).
After loading uhci-hcd you need to do:
echo -n X >/sys/bus/pci/drivers/uhci_hcd/unbind
where X is the device ID of the controller you want to disable, for
example, '0000:00:1d.2'. You can see IDs for all the enabled
controllers in the /sys/bus/pci/drivers/uhci_hcd/ directory.
Alan Stern
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