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thunderbolt: Set tb->root_switch to NULL when domain is stopped

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Similarly what we do with the firmware connection manager. This makes
tb_xdp_handle_request() return error to the remote host. However, we
need to make sure we keep the uuid alive so that we can reply until the
whole domain is released.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
This commit is contained in:
Mika Westerberg
2025-11-19 12:49:30 +02:00
parent 4c63f29872
commit e56249d8a6
2 changed files with 6 additions and 1 deletions
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1
drivers/thunderbolt/tb.c
View File

@@ -2952,6 +2952,7 @@ static void tb_stop(struct tb *tb)
tb_tunnel_put(tunnel);
}
tb_switch_remove(tb->root_switch);
tb->root_switch = NULL;
tcm->hotplug_active = false; /* signal tb_handle_hotplug to quit */
}

6
drivers/thunderbolt/xdomain.c
View File

@@ -740,7 +740,7 @@ static void tb_xdp_handle_request(struct work_struct *work)
mutex_lock(&tb->lock);
if (tb->root_switch)
uuid = tb->root_switch->uuid;
uuid = kmemdup(tb->root_switch->uuid, sizeof(*uuid), GFP_KERNEL);
else
uuid = NULL;
mutex_unlock(&tb->lock);
@@ -880,6 +880,7 @@ static void tb_xdp_handle_request(struct work_struct *work)
}
out:
kfree(uuid);
kfree(xw->pkg);
kfree(xw);
@@ -2348,6 +2349,9 @@ static struct tb_xdomain *switch_find_xdomain(struct tb_switch *sw,
{
struct tb_port *port;
if (!sw)
return NULL;
tb_switch_for_each_port(sw, port) {
struct tb_xdomain *xd;