Comment 15 for bug 296710
Revision history for this message
| Scott James Remnant (Canonical) (canonical-scott) wrote Re: [Bug 296710] Re: warning: ehci_hcd loaded AFTER uhci_hcd and ohci_hcd | #15 |
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73416ba
(Get the code!)
On Sat, 2009-01-17 at 19:03 +0000, Luis Silva wrote:
> @scot: If you only have usb 1.0 hardware then ehci-hcd will do nothing.
> only when you load uhci-hcd will you have access to those deices. The
> point is the ehci-hcd driver does not block the uhci-hcd controlled
> devices. But the later drier acts on the USB 2.0 devices and prevents
> them from working full speed, even if you load ehci afterwards.
>
Exactly my point.
If you have to load ehci-hcd before uhci-hcd for the kernel to function
properly, but ehci-hcd only has MODALIAS strings for USB 2 devices, then
it's the kernel's fault that this doesn't work!
If there's a pre-order condition, then these things shouldn't even be
considered separate drivers!
uhci-hcd/ohci-hcd should depend on the ehci-hcd driver to ensure that it
is loaded first.
Alternatively they should be just compiled into one single usb-hcd
driver that figures it out for itself.
A non-modular kernel only fixes this for people who don't compile their
own.
Scott
--
Scott James Remnant
<email address hidden>