thunderbolt: Set lane bonding bit only for downstream port
commit 24d85bb3be373b5831699bddf698b392bd2b904d upstream. Fix the lane bonding procedure to follow the steps described in USB4 Connection Manager guide. Hence, set the lane bonding bit only for downstream port. This is needed for certain ASMedia device, otherwise lane bonding fails and the device disconnects. Cc: stable@vger.kernel.org Signed-off-by: Gil Fine <gil.fine@linux.intel.com> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -1082,7 +1082,7 @@ int tb_port_lane_bonding_enable(struct tb_port *port)
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* Only set bonding if the link was not already bonded. This
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* avoids the lane adapter to re-enter bonding state.
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*/
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if (width == TB_LINK_WIDTH_SINGLE) {
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if (width == TB_LINK_WIDTH_SINGLE && !tb_is_upstream_port(port)) {
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ret = tb_port_set_lane_bonding(port, true);
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if (ret)
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goto err_lane1;
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