Revert "usb: interface authorization: Documentation part"

This reverts commit 6ef2bf71764708f7c58ee9300acd8df05dbaa06f as the
signed-off-by address is invalid.

Cc: Stefan Koch <stefan.koch10@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 0 insertions, 34 deletions

diff --git a/Documentation/usb/authorization.txt b/Documentation/usb/authorization.txt
index 020cec5585ce..c069b6884c77 100644
--- a/Documentation/usb/authorization.txt
+++ b/Documentation/usb/authorization.txt
@@ -3,9 +3,6 @@ Authorizing (or not) your USB devices to connect to the system
 
 (C) 2007 Inaky Perez-Gonzalez <inaky@linux.intel.com> Intel Corporation
 
-Interface authorization part:
-        (C) 2015 Stefan Koch <skoch@suse.de> SUSE LLC
-
 This feature allows you to control if a USB device can be used (or
 not) in a system. This feature will allow you to implement a lock-down
 of USB devices, fully controlled by user space.
@@ -93,34 +90,3 @@ etc, but you get the idea. Anybody with access to a device gadget kit
 can fake descriptors and device info. Don't trust that. You are
 welcome.
 
-
-Interface authorization
------------------------
-There is a similar approach to allow or deny specific USB interfaces.
-That allows to block only a subset of an USB device.
-
-Authorize an interface:
-$ echo 1 > /sys/bus/usb/devices/INTERFACE/authorized
-
-Deauthorize an interface:
-$ echo 0 > /sys/bus/usb/devices/INTERFACE/authorized
-
-The default value for new interfaces
-on a particular USB bus can be changed, too.
-
-Allow interfaces per default:
-$ echo 1 > /sys/bus/usb/devices/usbX/interface_authorized_default
-
-Deny interfaces per default:
-$ echo 0 > /sys/bus/usb/devices/usbX/interface_authorized_default
-
-Per default the interface_authorized_default bit is 1.
-So all interfaces would authorized per default.
-
-Note:
-If a deauthorized interface will be authorized so the driver probing must
-be triggered manually by writing INTERFACE to /sys/bus/usb/drivers_probe
-
-For drivers that need multiple interfaces all needed interfaces should be
-authroized first. After that the drivers should be probed.
-This avoids side effects.