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Re: [PATCH] ar9170usb: add mode-switching for AVM Fritz!WLAN USB N devices in cdrom mode

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On Wed, 4 Nov 2009, Oliver Neukum wrote:

> > If power is turned off, there's nothing we can do about it.  Once that
> > happens, it doesn't make much difference whether the mode switch occurs
> > in usb-storage or from a userspace program.  The old device instance
> > will go away and a new one will appear.
> 
> That is what happens and what must happen if we switch mode in user space.
> In kernel space, the kernel could repeat the mode switch.

How?  Doesn't the mode switch cause a change in the configuration,
interface, or endpoint descriptors?  The end result would be the same 
-- the old device instance would go away and a new one would appear.

Alan Stern

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