USB 3G modem: not all ports detected

https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=253096

Kernel 2.6.22.1:

Actual results:

usb 3-1: new full speed USB device using uhci_hcd and address 8
usb 3-1: configuration #1 chosen from 1 choice
option 3-1:1.0: GSM modem (1-port) converter detected
usb 3-1: GSM modem (1-port) converter now attached to ttyUSB0

Expected results:

usb 3-1: new full speed USB device using uhci_hcd and address 9
usb 3-1: configuration #1 chosen from 1 choice
option 3-1:1.0: GSM modem (1-port) converter detected
usb 3-1: GSM modem (1-port) converter now attached to ttyUSB0
option 3-1:1.1: GSM modem (1-port) converter detected
usb 3-1: GSM modem (1-port) converter now attached to ttyUSB1
option 3-1:1.2: GSM modem (1-port) converter detected
usb 3-1: GSM modem (1-port) converter now attached to ttyUSB2


ugly workaround:

1. Plug in the modem, let the usb subsystem settle down.
2. Run the following script:

sudo rmmod ehci_hcd
sudo modprobe ehci_hcd
echo "Press any key to continue, or wait 30 seconds"
read -n1 -t30 any_key
sudo wvdial umts


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