Suspend and resume on Dell E6520

[Hans Petter Selasky]

On Wednesday 09 November 2011 08:29:34 Ian Smith wrote:
> I looked at that, and was thinking of trying it when I started testing a 
> Cardbus USB 2.0 card requiring ohci and ehci too, so I've just stuck 
> with unloading/reloading those three modules in rc.{suspend,resume}, 
> which works around it, though it's messy and you lose mounts of course.
>  

Hi,

> I also saw somebody mention that this may apply to xhci (USB 3?) as 
> well, so figured 'someone' might be working on the general solution, 
> based on your discoveries.  Not so?

Probably the drivers themselves can do this re-init without the load/unload. I 
don't have a PC to test this on, so any patches are welcome.

Basically what you need to do is to reset the hardware and point it to the 
existing DMA schedule.

--HPS