diff mbox series

[02/20] thunderbolt: Do not touch lane 1 adapter path config space

Message ID 20230531090645.5573-3-mika.westerberg@linux.intel.com
State Superseded
Headers show
Series thunderbolt: Initial USB4 v2 support | expand

Commit Message

Mika Westerberg May 31, 2023, 9:06 a.m. UTC 
It is not required to be implemented at all because USB4 does not use
lane 1 for tunneling except when aggregated with lane 0. For this reason
do not try to read the path config space of USB4 lane 1 adapters.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
---
 drivers/thunderbolt/switch.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/thunderbolt/switch.c b/drivers/thunderbolt/switch.c
index 0c11caec7e8e..47961afdcc73 100644
--- a/drivers/thunderbolt/switch.c
+++ b/drivers/thunderbolt/switch.c
@@ -723,7 +723,7 @@  static int tb_init_port(struct tb_port *port)
 		 * can be read from the path config space. Legacy
 		 * devices we use hard-coded value.
 		 */
-		if (tb_switch_is_usb4(port->sw)) {
+		if (port->cap_usb4) {
 			struct tb_regs_hop hop;
 
 			if (!tb_port_read(port, &hop, TB_CFG_HOPS, 0, 2))