diff options
Diffstat (limited to 'drivers/gpu/drm/sun4i/sun4i_drv.c')
| -rw-r--r-- | drivers/gpu/drm/sun4i/sun4i_drv.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/gpu/drm/sun4i/sun4i_drv.c b/drivers/gpu/drm/sun4i/sun4i_drv.c index a2012638d5f7..b5879d4620d8 100644 --- a/drivers/gpu/drm/sun4i/sun4i_drv.c +++ b/drivers/gpu/drm/sun4i/sun4i_drv.c @@ -226,6 +226,18 @@ struct endpoint_list { struct list_head list; }; +static bool node_is_in_list(struct list_head *endpoints, + struct device_node *node) +{ + struct endpoint_list *endpoint; + + list_for_each_entry(endpoint, endpoints, list) + if (endpoint->node == node) + return true; + + return false; +} + static int sun4i_drv_add_endpoints(struct device *dev, struct list_head *endpoints, struct component_match **match, @@ -292,6 +304,10 @@ static int sun4i_drv_add_endpoints(struct device *dev, } } + /* skip downstream node if it is already in the queue */ + if (node_is_in_list(endpoints, remote)) + continue; + /* Add downstream nodes to the queue */ endpoint = kzalloc(sizeof(*endpoint), GFP_KERNEL); if (!endpoint) { |