diff options
| author | Pooja Katiyar <pooja.katiyar@intel.com> | 2026-05-08 00:46:30 +0300 |
|---|---|---|
| committer | Mika Westerberg <mika.westerberg@linux.intel.com> | 2026-05-20 12:54:34 +0300 |
| commit | 95c4379e37a0abea72dfd389cfe2c54452523690 (patch) | |
| tree | f7666d02d6521050820037f4972326fc9bab2030 | |
| parent | afe9021d63b46233f5c87d52b820fa26e7f562cd (diff) | |
| download | linux-95c4379e37a0abea72dfd389cfe2c54452523690.tar.xz | |
thunderbolt: Don't access path config space on Lane 1 adapters in tb_switch_reset_host()
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>
| -rw-r--r-- | drivers/thunderbolt/switch.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/thunderbolt/switch.c b/drivers/thunderbolt/switch.c index bfcab98faf4b..ad0ec8f8ee28 100644 --- a/drivers/thunderbolt/switch.c +++ b/drivers/thunderbolt/switch.c @@ -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); |