Merge tag 'devicetree-for-4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

Pull DeviceTree updates from Rob Herring:

 - Sync dtc to upstream version v1.4.6-9-gaadd0b65c987. This adds a
   bunch more warnings (hidden behind W=1).

 - Build dtc lexer and parser files instead of using shipped versions.

 - Rework overlay apply API to take an FDT as input and apply overlays
   in a single step.

 - Add a phandle lookup cache. This improves boot time by hundreds of
   msec on systems with large DT.

 - Add trivial mcp4017/18/19 potentiometers bindings.

 - Remove VLA stack usage in DT code.

* tag 'devicetree-for-4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (26 commits)
  of: unittest: fix an error code in of_unittest_apply_overlay()
  of: unittest: move misplaced function declaration
  of: unittest: Remove VLA stack usage
  of: overlay: Fix forgotten reference to of_overlay_apply()
  of: Documentation: Fix forgotten reference to of_overlay_apply()
  of: unittest: local return value variable related cleanups
  of: unittest: remove unneeded local return value variables
  dt-bindings: trivial: add various mcp4017/18/19 potentiometers
  of: unittest: fix an error test in of_unittest_overlay_8()
  of: cache phandle nodes to reduce cost of of_find_node_by_phandle()
  dt-bindings: rockchip-dw-mshc: use consistent clock names
  MAINTAINERS: Add linux/of_*.h headers to appropriate subsystems
  scripts: turn off some new dtc warnings by default
  scripts/dtc: Update to upstream version v1.4.6-9-gaadd0b65c987
  scripts/dtc: generate lexer and parser during build instead of shipping
  powerpc: boot: add strrchr function
  of: overlay: do not include path in full_name of added nodes
  of: unittest: clean up changeset test
  arm64/efi: Make strrchr() available to the EFI namespace
  ARM: boot: add strrchr function
  ...

1 files changed, 10 insertions, 11 deletions

diff --git a/drivers/of/dynamic.c b/drivers/of/dynamic.c
index 7bb33d22b4e2..f4f8ed9b5454 100644
--- a/drivers/of/dynamic.c
+++ b/drivers/of/dynamic.c
@@ -383,25 +383,24 @@ struct property *__of_prop_dup(const struct property *prop, gfp_t allocflags)
 
 /**
  * __of_node_dup() - Duplicate or create an empty device node dynamically.
- * @fmt: Format string (plus vargs) for new full name of the device node
+ * @np:		if not NULL, contains properties to be duplicated in new node
+ * @full_name:	string value to be duplicated into new node's full_name field
  *
- * Create an device tree node, either by duplicating an empty node or by allocating
- * an empty one suitable for further modification.  The node data are
- * dynamically allocated and all the node flags have the OF_DYNAMIC &
- * OF_DETACHED bits set. Returns the newly allocated node or NULL on out of
- * memory error.
+ * Create a device tree node, optionally duplicating the properties of
+ * another node.  The node data are dynamically allocated and all the node
+ * flags have the OF_DYNAMIC & OF_DETACHED bits set.
+ *
+ * Returns the newly allocated node or NULL on out of memory error.
  */
-struct device_node *__of_node_dup(const struct device_node *np, const char *fmt, ...)
+struct device_node *__of_node_dup(const struct device_node *np,
+				  const char *full_name)
 {
-	va_list vargs;
 	struct device_node *node;
 
 	node = kzalloc(sizeof(*node), GFP_KERNEL);
 	if (!node)
 		return NULL;
-	va_start(vargs, fmt);
-	node->full_name = kvasprintf(GFP_KERNEL, fmt, vargs);
-	va_end(vargs);
+	node->full_name = kstrdup(full_name, GFP_KERNEL);
 	if (!node->full_name) {
 		kfree(node);
 		return NULL;