Merge tag 'devicetree-for-4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

Pull DeviceTree updates from Rob Herring:
 "A bigger diffstat than usual with the kbuild changes and a tree wide
  fix in the binding documentation.

  Summary:

   - kbuild cleanups and improvements for dtbs

   - Code clean-up of overlay code and fixing for some long standing
     memory leak and race condition in applying overlays

   - Improvements to DT memory usage making sysfs/kobjects optional and
     skipping unflattening of disabled nodes. This is part of kernel
     tinification efforts.

   - Final piece of removing storing the full path for every DT node.
     The prerequisite conversion of printk's to use device_node format
     specifier happened in 4.14.

   - Sync with current upstream dtc. This brings additional checks to
     dtb compiling.

   - Binding doc tree wide removal of leading 0s from examples

   - RTC binding documentation adding missing devices and some
     consolidation of duplicated bindings

   - Vendor prefix documentation for nutsboard, Silicon Storage
     Technology, shimafuji, Tecon Microprocessor Technologies, DH
     electronics GmbH, Opal Kelly, and Next Thing"

* tag 'devicetree-for-4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (55 commits)
  dt-bindings: usb: add #phy-cells to usb-nop-xceiv
  dt-bindings: Remove leading zeros from bindings notation
  kbuild: handle dtb-y and CONFIG_OF_ALL_DTBS natively in Makefile.lib
  MIPS: dts: remove bogus bcm96358nb4ser.dtb from dtb-y entry
  kbuild: clean up *.dtb and *.dtb.S patterns from top-level Makefile
  .gitignore: move *.dtb and *.dtb.S patterns to the top-level .gitignore
  .gitignore: sort normal pattern rules alphabetically
  dt-bindings: add vendor prefix for Next Thing Co.
  scripts/dtc: Update to upstream version v1.4.5-6-gc1e55a5513e9
  of: dynamic: fix memory leak related to properties of __of_node_dup
  of: overlay: make pr_err() string unique
  of: overlay: pr_err from return NOTIFY_OK to overlay apply/remove
  of: overlay: remove unneeded check for NULL kbasename()
  of: overlay: remove a dependency on device node full_name
  of: overlay: simplify applying symbols from an overlay
  of: overlay: avoid race condition between applying multiple overlays
  of: overlay: loosen overly strict phandle clash check
  of: overlay: expand check of whether overlay changeset can be removed
  of: overlay: detect cases where device tree may become corrupt
  of: overlay: minor restructuring
  ...

1 files changed, 24 insertions, 21 deletions

diff --git a/include/linux/of.h b/include/linux/of.h
index b240ed69dc96..43b5034c6a1e 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -37,9 +37,15 @@ struct property {
 	int	length;
 	void	*value;
 	struct property *next;
+#if defined(CONFIG_OF_DYNAMIC) || defined(CONFIG_SPARC)
 	unsigned long _flags;
+#endif
+#if defined(CONFIG_OF_PROMTREE)
 	unsigned int unique_id;
+#endif
+#if defined(CONFIG_OF_KOBJ)
 	struct bin_attribute attr;
+#endif
 };
 
 #if defined(CONFIG_SPARC)
@@ -58,7 +64,9 @@ struct device_node {
 	struct	device_node *parent;
 	struct	device_node *child;
 	struct	device_node *sibling;
+#if defined(CONFIG_OF_KOBJ)
 	struct	kobject kobj;
+#endif
 	unsigned long _flags;
 	void	*data;
 #if defined(CONFIG_SPARC)
@@ -103,21 +111,17 @@ extern struct kobj_type of_node_ktype;
 extern const struct fwnode_operations of_fwnode_ops;
 static inline void of_node_init(struct device_node *node)
 {
+#if defined(CONFIG_OF_KOBJ)
 	kobject_init(&node->kobj, &of_node_ktype);
+#endif
 	node->fwnode.ops = &of_fwnode_ops;
 }
 
-/* true when node is initialized */
-static inline int of_node_is_initialized(struct device_node *node)
-{
-	return node && node->kobj.state_initialized;
-}
-
-/* true when node is attached (i.e. present on sysfs) */
-static inline int of_node_is_attached(struct device_node *node)
-{
-	return node && node->kobj.state_in_sysfs;
-}
+#if defined(CONFIG_OF_KOBJ)
+#define of_node_kobj(n) (&(n)->kobj)
+#else
+#define of_node_kobj(n) NULL
+#endif
 
 #ifdef CONFIG_OF_DYNAMIC
 extern struct device_node *of_node_get(struct device_node *node);
@@ -203,6 +207,7 @@ static inline void of_node_clear_flag(struct device_node *n, unsigned long flag)
 	clear_bit(flag, &n->_flags);
 }
 
+#if defined(CONFIG_OF_DYNAMIC) || defined(CONFIG_SPARC)
 static inline int of_property_check_flag(struct property *p, unsigned long flag)
 {
 	return test_bit(flag, &p->_flags);
@@ -217,6 +222,7 @@ static inline void of_property_clear_flag(struct property *p, unsigned long flag
 {
 	clear_bit(flag, &p->_flags);
 }
+#endif
 
 extern struct device_node *__of_find_all_nodes(struct device_node *prev);
 extern struct device_node *of_find_all_nodes(struct device_node *prev);
@@ -1283,9 +1289,6 @@ static inline int of_reconfig_get_state_change(unsigned long action,
 }
 #endif /* CONFIG_OF_DYNAMIC */
 
-/* CONFIG_OF_RESOLVE api */
-extern int of_resolve_phandles(struct device_node *tree);
-
 /**
  * of_device_is_system_power_controller - Tells if system-power-controller is found for device_node
  * @np: Pointer to the given device_node
@@ -1302,7 +1305,7 @@ static inline bool of_device_is_system_power_controller(const struct device_node
  */
 
 enum of_overlay_notify_action {
-	OF_OVERLAY_PRE_APPLY,
+	OF_OVERLAY_PRE_APPLY = 0,
 	OF_OVERLAY_POST_APPLY,
 	OF_OVERLAY_PRE_REMOVE,
 	OF_OVERLAY_POST_REMOVE,
@@ -1316,26 +1319,26 @@ struct of_overlay_notify_data {
 #ifdef CONFIG_OF_OVERLAY
 
 /* ID based overlays; the API for external users */
-int of_overlay_create(struct device_node *tree);
-int of_overlay_destroy(int id);
-int of_overlay_destroy_all(void);
+int of_overlay_apply(struct device_node *tree, int *ovcs_id);
+int of_overlay_remove(int *ovcs_id);
+int of_overlay_remove_all(void);
 
 int of_overlay_notifier_register(struct notifier_block *nb);
 int of_overlay_notifier_unregister(struct notifier_block *nb);
 
 #else
 
-static inline int of_overlay_create(struct device_node *tree)
+static inline int of_overlay_apply(struct device_node *tree, int *ovcs_id)
 {
 	return -ENOTSUPP;
 }
 
-static inline int of_overlay_destroy(int id)
+static inline int of_overlay_remove(int *ovcs_id)
 {
 	return -ENOTSUPP;
 }
 
-static inline int of_overlay_destroy_all(void)
+static inline int of_overlay_remove_all(void)
 {
 	return -ENOTSUPP;
 }