--- zzzz-none-000/linux-4.4.60/drivers/of/base.c	2017-04-08 07:53:53.000000000 +0000
+++ dragonfly-4020-701/linux-4.4.60/drivers/of/base.c	2018-11-08 13:36:17.000000000 +0000
@@ -143,7 +143,7 @@
 	/* Important: Don't leak passwords */
 	bool secure = strncmp(pp->name, "security-", 9) == 0;
 
-	if (!IS_ENABLED(CONFIG_SYSFS))
+	if (!IS_ENABLED(CONFIG_SYSFS) || IS_ENABLED(CONFIG_AVM_THIN_SYSFS))
 		return 0;
 
 	if (!of_kset || !of_node_is_attached(np))
@@ -167,7 +167,7 @@
 	struct property *pp;
 	int rc;
 
-	if (!IS_ENABLED(CONFIG_SYSFS))
+	if (!IS_ENABLED(CONFIG_SYSFS) || IS_ENABLED(CONFIG_AVM_THIN_SYSFS))
 		return 0;
 
 	if (!of_kset)
@@ -197,6 +197,7 @@
 
 void __init of_core_init(void)
 {
+#if !defined(CONFIG_AVM_THIN_SYSFS)
 	struct device_node *np;
 
 	/* Create the kset, and register existing nodes */
@@ -214,6 +215,7 @@
 	/* Symlink in /proc as required by userspace ABI */
 	if (of_root)
 		proc_symlink("device-tree", NULL, "/sys/firmware/devicetree/base");
+#endif
 }
 
 static struct property *__of_find_property(const struct device_node *np,
@@ -1767,7 +1769,7 @@
 
 void __of_remove_property_sysfs(struct device_node *np, struct property *prop)
 {
-	if (!IS_ENABLED(CONFIG_SYSFS))
+	if (!IS_ENABLED(CONFIG_SYSFS) || IS_ENABLED(CONFIG_AVM_THIN_SYSFS))
 		return;
 
 	/* at early boot, bail here and defer setup to of_init() */
@@ -1834,7 +1836,7 @@
 void __of_update_property_sysfs(struct device_node *np, struct property *newprop,
 		struct property *oldprop)
 {
-	if (!IS_ENABLED(CONFIG_SYSFS))
+	if (!IS_ENABLED(CONFIG_SYSFS) || IS_ENABLED(CONFIG_AVM_THIN_SYSFS))
 		return;
 
 	/* At early boot, bail out and defer setup to of_init() */