Re: Warning! ehci_hcd should always be loaded before uhci_hcd and ohci_hcd

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On Mon, 22 Feb 2010, Andrey Borzenkov wrote:

> The problem is this dependency strikes back in other places as well. 
> E.g. I want to find out drivers for my USB keyboard to be loaded in 
> initrd. Natural way is to walk up device tree collecting them - which 
> leaves me with uhci (or ohci). Now I must manually do not forget to put 
> in ehci, although strictly speaking I do not need it (in initrd) at all.
> 
> Kernel based solution would really be nice ...

There _is_ a kernel-based solution.  Build ehci-hcd into the kernel 
instead of building it as a module.  Then it will always come before 
uhci-hcd -- even if uhci-hcd is also built into the kernel.

Alan Stern

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