thunderbolt: Initialize root switch and ports

This patch adds the structures tb_switch and tb_port as well as code to
initialize the root switch.

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

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/thunderbolt/tb.c b/drivers/thunderbolt/tb.c
index 164dea083e9e..f1b6100b6cf0 100644
--- a/drivers/thunderbolt/tb.c
+++ b/drivers/thunderbolt/tb.c
@@ -71,6 +71,10 @@ void thunderbolt_shutdown_and_free(struct tb *tb)
 {
 	mutex_lock(&tb->lock);
 
+	if (tb->root_switch)
+		tb_switch_free(tb->root_switch);
+	tb->root_switch = NULL;
+
 	if (tb->ctl) {
 		tb_ctl_stop(tb->ctl);
 		tb_ctl_free(tb->ctl);
@@ -126,6 +130,10 @@ struct tb *thunderbolt_alloc_and_start(struct tb_nhi *nhi)
 	 */
 	tb_ctl_start(tb->ctl);
 
+	tb->root_switch = tb_switch_alloc(tb, 0);
+	if (!tb->root_switch)
+		goto err_locked;
+
 	/* Allow tb_handle_hotplug to progress events */
 	tb->hotplug_active = true;
 	mutex_unlock(&tb->lock);