I was desperately trying to get some information on this subject, to do
some automation for a new USB driver installation, but kept getting the
same incomplete information everywhere.

Can someone tell me how do I correctly identify which controller is
present on a system with 2.4 kernel?

For OHCI, look for 32-bit memory at 0xHH000000 in /proc/pci
For UHCI, look for 0xHHHH in /proc/pci

How do I detect EHCI and UHCI-Alt? What is the pattern for them in
/proc/pci?

If UHCI-Alt also gets 0xHHHH in /proc/pci, which one should I try first?
uhci.o or usb-uhci.o and why?

Will the logic be different for a 2.6 kernel?

Thanks,
Ramesh
(Please CC me on the replies)


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