thunderbolt: Add tb_switch_get()
Sometimes there is need for increasing reference count of a switch as
well. This also follows what we have for xdomains.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h
index 895c57a..c7bd77e 100644
--- a/drivers/thunderbolt/tb.h
+++ b/drivers/thunderbolt/tb.h
@@ -387,6 +387,13 @@ struct tb_switch *tb_switch_find_by_link_depth(struct tb *tb, u8 link,
u8 depth);
struct tb_switch *tb_switch_find_by_uuid(struct tb *tb, const uuid_t *uuid);
+static inline struct tb_switch *tb_switch_get(struct tb_switch *sw)
+{
+ if (sw)
+ get_device(&sw->dev);
+ return sw;
+}
+
static inline void tb_switch_put(struct tb_switch *sw)
{
put_device(&sw->dev);