[PATCH v9 7/7] of/platform: Don't create device links for default busses

Saravana Kannan
2019-07-31T22:17:54Z

Default busses also have devices created for them. But there's no point
in creating device links for them. It's especially wasteful as it'll
cause the traversal of the entire device tree and also spend a lot of
time checking and figuring out that creating those links isn't allowed.
So check for default busses and skip trying to create device links for
them.

Signed-off-by: Saravana Kannan <saravanak@google.com>
---
drivers/of/platform.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index 36e25136e807..33cac801e50b 100644
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -682,6 +682,8 @@ static int of_link_to_suppliers(struct device *dev)
return 0;
if (unlikely(!dev->of_node))
return 0;
+ if (of_match_node(of_default_bus_match_table, dev->of_node))
+ return 0;

return __of_link_to_suppliers(dev, dev->of_node);
}
--
2.22.0.709.g102302147b-goog