On ven., 2014-08-08 at 18:17 -0400, Alan Stern wrote:
> The authorized_default module parameter affects USB buses when they
> are
> discovered and registered; after that it has no effect.  Therefore to
> accomplish what you want, you need to put
> "usbcore.authorized_default=0" in the kernel's boot command line.
> 
> Alternatively, you can change the default authorization value for a
> particular bus after it has been created, by writing to the
> authorized_default sysfs file for the bus's root hub.  For example,
> 
>         echo 0 >/sys/bus/usb/devices/usb1/authorized_default
> 
> will set the default value for new devices on bus 1 to 0.

Thanks for your answer. So that confirms it's not possible to toggle
that value depending on a platform state (for example if the session is
locked).

Regards,
-- 
Yves-Alexis

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