1 files changed, 13 insertions, 7 deletions

diff --git a/drivers/gpu/drm/omapdrm/dss/base.c b/drivers/gpu/drm/omapdrm/dss/base.c
index 3c088cd2ceab..f8dad99013e8 100644
--- a/drivers/gpu/drm/omapdrm/dss/base.c
+++ b/drivers/gpu/drm/omapdrm/dss/base.c
@@ -303,6 +303,7 @@ struct omapdss_comp_node {
         struct list_head list;
         struct device_node *node;
         bool dss_core_component;
+        const char *compat;
 };
 
 static bool omapdss_list_contains(const struct device_node *node)
@@ -320,13 +321,20 @@ static bool omapdss_list_contains(const struct device_node *node)
 static void omapdss_walk_device(struct device *dev, struct device_node *node,
                                 bool dss_core)
 {
+        struct omapdss_comp_node *comp;
         struct device_node *n;
-        struct omapdss_comp_node *comp = devm_kzalloc(dev, sizeof(*comp),
-                                                      GFP_KERNEL);
+        const char *compat;
+        int ret;
+
+        ret = of_property_read_string(node, "compatible", &compat);
+        if (ret < 0)
+                return;
 
+        comp = devm_kzalloc(dev, sizeof(*comp), GFP_KERNEL);
         if (comp) {
                 comp->node = node;
                 comp->dss_core_component = dss_core;
+                comp->compat = compat;
                 list_add(&comp->list, &omapdss_comp_list);
         }
 
@@ -366,12 +374,8 @@ void omapdss_gather_components(struct device *dev)
 
         omapdss_walk_device(dev, dev->of_node, true);
 
-        for_each_available_child_of_node(dev->of_node, child) {
-                if (!of_find_property(child, "compatible", NULL))
-                        continue;
-
+        for_each_available_child_of_node(dev->of_node, child)
                 omapdss_walk_device(dev, child, true);
-        }
 }
 EXPORT_SYMBOL(omapdss_gather_components);
 
@@ -379,6 +383,8 @@ static bool omapdss_component_is_loaded(struct omapdss_comp_node *comp)
 {
         if (comp->dss_core_component)
                 return true;
+        if (!strstarts(comp->compat, "omapdss,"))
+                return true;
         if (omapdss_device_is_registered(comp->node))
                 return true;