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diff --git a/Documentation/ABI/testing/configfs-usb-gadget-loopback b/Documentation/ABI/testing/configfs-usb-gadget-loopback
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+What: /config/usb-gadget/gadget/functions/Loopback.name
+Date: Nov 2013
+KernelVersion: 3.13
+Description:
+ The attributes:
+
+ qlen - depth of loopback queue
+ bulk_buflen - buffer length