thunderbolt: Improve DisplayPort tunnel setup process to be more robust
After DisplayPort tunnel setup, we add verification that the DPRX capabilities read process completed. Otherwise, we bail out, teardown the tunnel, and try setup another DisplayPort tunnel using next available DP IN adapter. We do so till all DP IN adapters tried. This way, we avoid allocating DP IN adapter and (bandwidth for it) for unusable tunnel. Signed-off-by: Gil Fine <gil.fine@linux.intel.com> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
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