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[2/2] thunderbolt: Check router generation before connecting xHCI

Message ID 20220816104059.71844-2-mika.westerberg@linux.intel.com
State New
Headers show
Series [1/2] thunderbolt: Use the actual buffer in tb_async_error() | expand

Commit Message

Mika Westerberg Aug. 16, 2022, 10:40 a.m. UTC 
Only Thunderbolt 3 routers need the xHCI connection flow. This also
ensures the router actually has both lane adapters (1 and 3). While
there move declaration of the boolean variables inside the block where
they are being used.

Fixes: 30a4eca69b76 ("thunderbolt: Add internal xHCI connect flows for Thunderbolt 3 devices")
Cc: stable@vger.kernel.org
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
---
 drivers/thunderbolt/switch.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/thunderbolt/switch.c b/drivers/thunderbolt/switch.c
index 244f8cd38b25..c63c1f4ff9dc 100644
--- a/drivers/thunderbolt/switch.c
+++ b/drivers/thunderbolt/switch.c
@@ -3786,14 +3786,18 @@  int tb_switch_pcie_l1_enable(struct tb_switch *sw)
  */
 int tb_switch_xhci_connect(struct tb_switch *sw)
 {
-	bool usb_port1, usb_port3, xhci_port1, xhci_port3;
 	struct tb_port *port1, *port3;
 	int ret;
 
+	if (sw->generation != 3)
+		return 0;
+
 	port1 = &sw->ports[1];
 	port3 = &sw->ports[3];
 
 	if (tb_switch_is_alpine_ridge(sw)) {
+		bool usb_port1, usb_port3, xhci_port1, xhci_port3;
+
 		usb_port1 = tb_lc_is_usb_plugged(port1);
 		usb_port3 = tb_lc_is_usb_plugged(port3);
 		xhci_port1 = tb_lc_is_xhci_connected(port1);