Revert "thunderbolt: Hide authorized attribute if router does not support PCIe tunnels"

commit 8e3341257e3b5774ec8cd3ef1ba0c0d3fada322b upstream.

This reverts commit 6f3badead6a078cf3c71f381f9d84ac922984a00.

It turns out bolt depends on having authorized attribute visible under
each device. Hiding it makes bolt crash as several people have reported
on various bug trackers. For this reason revert the commit.

Link: https://gitlab.freedesktop.org/bolt/bolt/-/issues/174
Link: https://bugzilla.redhat.com/show_bug.cgi?id=1979765
Link: https://bugs.archlinux.org/task/71569
Cc: stable@vger.kernel.org
Cc: Christian Kellner <ckellner@redhat.com>
Fixes: 6f3badead6a0 ("thunderbolt: Hide authorized attribute if router does not support PCIe tunnels")
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Link: https://lore.kernel.org/r/20210727142501.27476-1-mika.westerberg@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/thunderbolt/switch.c b/drivers/thunderbolt/switch.c
index e73cd296db7ef5497368b71935c147c09d3a0701..a82032c081e83a80fb6be6fe90eeda5bd0dd5cf0 100644 (file)
--- a/drivers/thunderbolt/switch.c
+++ b/drivers/thunderbolt/switch.c
@@ -1740,18 +1740,6 @@ static struct attribute *switch_attrs[] = {
        NULL,
 };
 
-static bool has_port(const struct tb_switch *sw, enum tb_port_type type)
-{
-       const struct tb_port *port;
-
-       tb_switch_for_each_port(sw, port) {
-               if (!port->disabled && port->config.type == type)
-                       return true;
-       }
-
-       return false;
-}
-
 static umode_t switch_attr_is_visible(struct kobject *kobj,
                                      struct attribute *attr, int n)
 {
@@ -1760,8 +1748,7 @@ static umode_t switch_attr_is_visible(struct kobject *kobj,
 
        if (attr == &dev_attr_authorized.attr) {
                if (sw->tb->security_level == TB_SECURITY_NOPCIE ||
-                   sw->tb->security_level == TB_SECURITY_DPONLY ||
-                   !has_port(sw, TB_TYPE_PCIE_UP))
+                   sw->tb->security_level == TB_SECURITY_DPONLY)
                        return 0;
        } else if (attr == &dev_attr_device.attr) {
                if (!sw->device)