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thunderbolt: Don't access path config space on Lane 1 adapters in tb_switch_reset_host()

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USB4 Lane 1 adapters do not have accessible path config space. Skip the
path config space cleanup in tb_switch_reset_host() for these ports. The
check is for USB4 switches only. Thunderbolt 1-3 Lane 1 adapters stay as
is because we do need to program their path config space.

Co-developed-by: Rene Sapiens <rene.sapiens@linux.intel.com>
Signed-off-by: Rene Sapiens <rene.sapiens@linux.intel.com>
Signed-off-by: Pooja Katiyar <pooja.katiyar@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
This commit is contained in:
Pooja Katiyar
2026-05-20 11:54:34 +02:00
committed by Mika Westerberg
parent afe9021d63
commit 95c4379e37
1 changed files with 6 additions and 0 deletions
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drivers/thunderbolt/switch.c
+6
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@@ -1620,6 +1620,12 @@ static int tb_switch_reset_host(struct tb_switch *sw)
ret = tb_port_reset(port);
if (ret)
return ret;
/*
* USB4 Lane 1 adapters do not have accessible
* path config space.
*/
if (tb_switch_is_usb4(sw) && !port->usb4)
continue;
} else if (tb_port_is_usb3_down(port) ||
tb_port_is_usb3_up(port)) {
tb_usb3_port_enable(port, false);