diff options
| author | Gil Fine <gil.fine@intel.com> | 2022-09-23 01:30:38 +0300 |
|---|---|---|
| committer | Mika Westerberg <mika.westerberg@linux.intel.com> | 2023-06-09 12:07:22 +0300 |
| commit | 7ce542219b6323764cb922722b677005404d9b60 (patch) | |
| tree | 13d0ddb08544c5a34a01cc0ba874756529938a5f /drivers/thunderbolt/usb4.c | |
| parent | ef65afa0740e28cb0951fa9012cb78765f883a4a (diff) | |
thunderbolt: Introduce tb_switch_downstream_port()
Introduce tb_switch_downstream_port() helper function that returns the
downstream port of a parent switch that is connected to the upstream
port of specified switch. From now on, we use it all across the driver
where applicable.
While there fix a whitespace in comment and rename 'downstream' to
'down' to be consistent with the rest of the driver.
Signed-off-by: Gil Fine <gil.fine@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Diffstat (limited to 'drivers/thunderbolt/usb4.c')
| -rw-r--r-- | drivers/thunderbolt/usb4.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/drivers/thunderbolt/usb4.c b/drivers/thunderbolt/usb4.c index 485b6e430686..9f5a98347bee 100644 --- a/drivers/thunderbolt/usb4.c +++ b/drivers/thunderbolt/usb4.c @@ -234,8 +234,8 @@ static bool link_is_usb4(struct tb_port *port) */ int usb4_switch_setup(struct tb_switch *sw) { - struct tb_port *downstream_port; - struct tb_switch *parent; + struct tb_switch *parent = tb_switch_parent(sw); + struct tb_port *down; bool tbt3, xhci; u32 val = 0; int ret; @@ -249,9 +249,8 @@ int usb4_switch_setup(struct tb_switch *sw) if (ret) return ret; - parent = tb_switch_parent(sw); - downstream_port = tb_port_at(tb_route(sw), parent); - sw->link_usb4 = link_is_usb4(downstream_port); + down = tb_switch_downstream_port(sw); + sw->link_usb4 = link_is_usb4(down); tb_sw_dbg(sw, "link: %s\n", sw->link_usb4 ? "USB4" : "TBT"); xhci = val & ROUTER_CS_6_HCI; |