On Mon, 22 Feb 2010 09:42:31 +0300 Andrey Borzenkov <arvidjaar@xxxxxxx> wrote: > ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver > Warning! ehci_hcd should always be loaded before uhci_hcd and > ohci_hcd, not after > > [snipped] > > So my question is - is the warning still true? How serious problems > can result if uhci is loaded before ehci? > > Does it make sense to workaround it in udev or may be trivial > > install uhci_hcd mdprobe ehci_hcd; modprobe --ignore-install uhci_hcd > > would be enough? That's basically what we did: $ cat /etc/modprobe.d/usb-controller.conf # Make sure that ehci-hcd is always loaded before uhci-hci # # or ohci-hcd to prevent a kernel warning: install uhci-hcd /sbin/modprobe ehci-hcd ; /sbin/modprobe -i uhci-hcd install ohci-hcd /sbin/modprobe ehci-hcd ; /sbin/modprobe -i ohci-hcd -RW
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