Re: What would cause the xhci_irq interrupt handler to not be called?

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Alan Stern <stern@...> writes:

> 
> On Tue, 3 Mar 2015, Jay Guillory wrote:
> 
> > I actually see the ACK sent from my device to the HC on the protocol 
> > analyzer logs. How can I check if the HC actually receives/sees the 
ACK?
> 
> You're talking about a control transfer, right?  Control transfers 
> involve more than one stage and thus require more than one ACK.
> 
> The way to know if all the ACKs have been received/sent is if your 
> completion routine gets called.  
> 
> Alan Stern
> 
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> 

Alan,
You're correct. Thank you! After doing a little more reading and looking 
at the logs again, the device does not appear to be completing the 
transfer, specifically it's not completing the Status Stage.

Best Regards,
Jay

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