Re: [linux-usb-devel] [RFC] USB device persistence across suspend-to-disk

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On Tue, 5 Sep 2006, Randy.Dunlap wrote:

> > +Setting the "persist=y" module parameter for usbcore will cause the
> 
>                 persist=1 ??

Either will work.

> > +kernel to work around these issues.  If usbcore is build into the
> 
> s/build/built/

Got it, thanks.

> > +main kernel instead of as a separate module, you can put
> > +"usbcore.persist=1" on the boot command line.  You can also change the
> > +kernel's behavior on the fly using sysfs: Type
> > +
> > +	echo y >/sys/module/usbcore/parameters/persist
> 
> Does sysfs treat 'y' as '1'?
> Anyway, it would be Good to be consistent.

Yes; I'll change everything to 'y'.

> > +structure.  In effect, the kernel treats the device as though it had
> > +merely been reset instead of unplugged.
> 
> so does the USB device also retain its same USB address?

It does.  It didn't seem worthwhile to mention that point, however.

> > -			dev->have_langid = -1;
> > +			dev->have_langid = 1;

> Different patch (?).

When this is submitted for inclusion, that change will be broken out into 
a separate patch.

Alan Stern

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