So others can find out what depends on backlight devices, as specified
in bindings/video/backlight/backlight.txt.
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@xxxxxxxxxxxxx>
---
Changes in v2: None
drivers/video/backlight/backlight.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/drivers/video/backlight/backlight.c b/drivers/video/backlight/backlight.c
index bddc8b1..ab8f5e7 100644
--- a/drivers/video/backlight/backlight.c
+++ b/drivers/video/backlight/backlight.c
@@ -566,8 +566,22 @@ struct backlight_device *of_find_backlight_by_node(struct device_node *node)
EXPORT_SYMBOL(of_find_backlight_by_node);
#endif
+static void backlight_get_dependencies(struct fwnode_handle *fwnode,
+ struct list_head *deps)
+{
+ struct device_node *np;
+
+ np = of_parse_phandle(to_of_node(fwnode), "backlight", 0);
+ if (!np)
+ return;
+
+ fwnode_add_dependency(&np->fwnode, deps);
+}
+
static void __exit backlight_class_exit(void)
{
+ fwnode_remove_dependency_parser(backlight_get_dependencies);
+
class_destroy(backlight_class);
}
@@ -586,6 +600,8 @@ static int __init backlight_class_init(void)
mutex_init(&backlight_dev_list_mutex);
BLOCKING_INIT_NOTIFIER_HEAD(&backlight_notifier);
+ fwnode_add_dependency_parser(backlight_get_dependencies);
+
return 0;
}
--
2.4.1
--
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