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Description of problem:
Performed an upgrade install from Redhat 8 to Redhat 9.

During boot process, got message that when loading the 
printer, /dev/usb/lp0 does not exist. Running usbview did not
show the device.

lspci (USB):
00:1d.0 USB Controller: Intel Corp. 82801DB USB (Hub #1) (rev 02)
00:1d.1 USB Controller: Intel Corp. 82801DB USB (Hub #2) (rev 02)
00:1d.2 USB Controller: Intel Corp. 82801DB USB (Hub #3) (rev 02)
00:1d.7 USB Controller: Intel Corp. 82801DB USB EHCI Controller (rev 02)

usbview - only showed EHCI. No UHCI devices were present.

Appears that usb-uhci.o driver is not being loaded!

Tried running kudzu - that didn't help.
Tried running redhat-config-printer - removed and readded device - wasn't detected.

Loading usb-uhci.o by hand and printer is now seen. Seems install/upgrade
process is not handling this printer correctly.

All this was working under Redhat 8.0.

/etc/modules.conf:
alias parport_lowlevel parport_pc
alias scsi_hostadapter aic7xxx
alias eth0 bcm4400
alias usb-controller usb-uhci
alias sound-slot-0 audigy
post-install sound-slot-0 /bin/aumix-minimal -f /etc/.aumixrc -L >/dev/null 2>&1
|| :
pre-remove sound-slot-0 /bin/aumix-minimal -f /etc/.aumixrc -S >/dev/null 2>&1 || :
alias ieee1394-controller ohci1394
alias char-major-81 bttv
alias usb-controller1 ehci-hcd
options st buffer_kbs=1408
alias usb-controller ehci-hcd
alias char-major-195 nvidia

Good the upgrade process have been responsible for adding
2 entries above for 'alias usb-controller'. One says ehci-hcd, 
the other says usb-uhci

Version-Release number of selected component (if applicable):


How reproducible:
Always

Steps to Reproduce:
1. Upgrade from 8.0 to 9.0
2. Driver usb-uhci not being loaded (/etc/modules.conf incorrect?)

    

Additional info: