Re: Oops in UHCI when encountering "host controller process error"

[Alan Stern]

On Tue, 9 Dec 2008, Jeremy Fitzhardinge wrote:

> OK.  If the controller is idle and the kernel wants to submit it some 
> new work, where does that happen?  Can I stick a uhci_sprint_schedule() 
> there to see the state of the structures before it starts to work on them?

The entry point is uhci_urb_enqueue().  You can do whatever you like 
there, but bear in mind that it may be called in interrupt context.  
uhci_sprint_schedule() should be fine.

However I don't really see the point.  If the DMA pool allocations are 
so badly messed up that the initial setup is wrong, why bother to 
search any further?

Alan Stern

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