Re: question on interrupt urb in the option driver

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On Fri, Jan 09, 2009 at 11:28:24PM +0100, Oliver Neukum wrote:
> Hi,
> 
> I've got a question on the interrupt URB of the option driver. It is started
> right away while a device is probed. Is it necessary for the hardware's
> correct functioning that the URB always run?

>From what I can tell, no it isn't.

> If so do I need to follow a special procedure to wake the device up
> from the suspended state?

That gets trickier, this driver supports a whole range of devices, odds
are some might allow this, and others might not.  Lots of them live on a
cardbus card, where the usb device itself isn't the biggest power issue,
but the cardbus bridge and host controller would be.  Others are just
individual usb devices that you plug into the machine.

I think it's going to get really messy if you try to autosuspend these
devices, but I have a stack here for testing if you want me to try
anything out.

thanks,

greg k-h
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