6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>
[ Upstream commit c4ff14436952c3d0dd05769d76cf48e73a253b48 ]
This is useful helper to find out the depth of a connected router.
Convert the existing users to call this helper instead of open-coding.
No functional changes.
Signed-off-by: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>
Signed-off-by: Qin Wan <qin.wan@xxxxxx>
Signed-off-by: Alexandru Gagniuc <alexandru.gagniuc@xxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/thunderbolt/tb.c | 4 ++--
drivers/thunderbolt/tb.h | 9 +++++++++
2 files changed, 11 insertions(+), 2 deletions(-)
--- a/drivers/thunderbolt/tb.c
+++ b/drivers/thunderbolt/tb.c
@@ -255,13 +255,13 @@ static int tb_enable_clx(struct tb_switc
* this in the future to cover the whole topology if it turns
* out to be beneficial.
*/
- while (sw && sw->config.depth > 1)
+ while (sw && tb_switch_depth(sw) > 1)
sw = tb_switch_parent(sw);
if (!sw)
return 0;
- if (sw->config.depth != 1)
+ if (tb_switch_depth(sw) != 1)
return 0;
/*
--- a/drivers/thunderbolt/tb.h
+++ b/drivers/thunderbolt/tb.h
@@ -868,6 +868,15 @@ static inline struct tb_port *tb_switch_
return tb_port_at(tb_route(sw), tb_switch_parent(sw));
}
+/**
+ * tb_switch_depth() - Returns depth of the connected router
+ * @sw: Router
+ */
+static inline int tb_switch_depth(const struct tb_switch *sw)
+{
+ return sw->config.depth;
+}
+
static inline bool tb_switch_is_light_ridge(const struct tb_switch *sw)
{
return sw->config.vendor_id == PCI_VENDOR_ID_INTEL &&
