I've got a system here with three sets of USB host controller hardware in it:
1 - SIS OHCI in the motherboard chipset 2 - NEC EHCI and OHCI in an add-on card 3 - ALi EHCI and OHCI in an add-on card
The system is running the 2.4 kernel series, currently 2.4.21 plain. I have both the EHCI and OHCI drivers in the kernel, things work just peachy.
However, both of the EHCI cards are being used for _only_ USB 2.0 devices, I have no need or desire to plug in USB 1.0/1.1 devices to them. In other words, I don't care if the OHCI host controllers on those cards are functional at all. On the other hand, I am using one of the OHCI-based ports on the motherboard, so I can't just remove the OHCI host controller driver completely.
What I'm wondering is if any thought has been given to providing some way to limit which host controllers each driver binds to? In my situation, if the OHCI driver did not bind to the add-on OHCI host controllers, two other devices (NICs) would not have to share interrupts with the host controllers, saving me some potential grief.
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