From 9da672a42878c58af5c50d7389dbae17bea9df38 Mon Sep 17 00:00:00 2001
From: Andreas Noever <andreas.noever@gmail.com>
Date: Tue, 3 Jun 2014 22:04:05 +0200
Subject: [PATCH] thunderbolt: Scan for downstream switches

Add utility methods tb_port_state and tb_wait_for_port. Add
tb_scan_switch which recursively checks for downstream switches.

Signed-off-by: Andreas Noever <andreas.noever@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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