| Message ID | 20210303121310.80937-2-mika.westerberg@linux.intel.com (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | c94732bda079ee66b5c3904cbb628d0cb218ab39 |
| Headers | show |
| Series | [1/2] thunderbolt: Initialize HopID IDAs in tb_switch_alloc() | expand |
diff --git a/drivers/thunderbolt/tb.c b/drivers/thunderbolt/tb.c index 1f000ac1728b..c348b1fc0efc 100644 --- a/drivers/thunderbolt/tb.c +++ b/drivers/thunderbolt/tb.c @@ -138,6 +138,10 @@ static void tb_discover_tunnels(struct tb_switch *sw) parent->boot = true; parent = tb_switch_parent(parent); } + } else if (tb_tunnel_is_dp(tunnel)) { + /* Keep the domain from powering down */ + pm_runtime_get_sync(&tunnel->src_port->sw->dev); + pm_runtime_get_sync(&tunnel->dst_port->sw->dev); } list_add_tail(&tunnel->list, &tcm->tunnel_list);
If the driver is unbound and then bound back it goes over the topology and figure out the existing tunnels. However, if it finds DP tunnel it should make sure the domain does not runtime suspend as otherwise it will tear down the DP tunnel unexpectedly. Fixes: 6ac6faee5d7d ("thunderbolt: Add runtime PM for Software CM") Cc: stable@vger.kernel.org Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> --- drivers/thunderbolt/tb.c | 4 ++++ 1 file changed, 4 insertions(+)