Merge branch 'master' into for-2.6.31

Conflicts:
	drivers/block/hd.c
	drivers/block/mg_disk.c

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

1 files changed, 0 insertions, 1076 deletions

diff --git a/arch/powerpc/boot/libfdt/libfdt.h b/arch/powerpc/boot/libfdt/libfdt.h
deleted file mode 100644
index ce80e4fb41b2..000000000000
--- a/arch/powerpc/boot/libfdt/libfdt.h
+++ /dev/null
@@ -1,1076 +0,0 @@
-#ifndef _LIBFDT_H
-#define _LIBFDT_H
-/*
- * libfdt - Flat Device Tree manipulation
- * Copyright (C) 2006 David Gibson, IBM Corporation.
- *
- * libfdt is dual licensed: you can use it either under the terms of
- * the GPL, or the BSD license, at your option.
- *
- *  a) This library is free software; you can redistribute it and/or
- *     modify it under the terms of the GNU General Public License as
- *     published by the Free Software Foundation; either version 2 of the
- *     License, or (at your option) any later version.
- *
- *     This library is distributed in the hope that it will be useful,
- *     but WITHOUT ANY WARRANTY; without even the implied warranty of
- *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *     GNU General Public License for more details.
- *
- *     You should have received a copy of the GNU General Public
- *     License along with this library; if not, write to the Free
- *     Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *     MA 02110-1301 USA
- *
- * Alternatively,
- *
- *  b) Redistribution and use in source and binary forms, with or
- *     without modification, are permitted provided that the following
- *     conditions are met:
- *
- *     1. Redistributions of source code must retain the above
- *        copyright notice, this list of conditions and the following
- *        disclaimer.
- *     2. Redistributions in binary form must reproduce the above
- *        copyright notice, this list of conditions and the following
- *        disclaimer in the documentation and/or other materials
- *        provided with the distribution.
- *
- *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
- *     CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
- *     INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- *     MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- *     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
- *     CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- *     SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- *     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- *     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- *     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- *     OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
- *     EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <libfdt_env.h>
-#include <fdt.h>
-
-#define FDT_FIRST_SUPPORTED_VERSION	0x10
-#define FDT_LAST_SUPPORTED_VERSION	0x11
-
-/* Error codes: informative error codes */
-#define FDT_ERR_NOTFOUND	1
-	/* FDT_ERR_NOTFOUND: The requested node or property does not exist */
-#define FDT_ERR_EXISTS		2
-	/* FDT_ERR_EXISTS: Attemped to create a node or property which
-	 * already exists */
-#define FDT_ERR_NOSPACE		3
-	/* FDT_ERR_NOSPACE: Operation needed to expand the device
-	 * tree, but its buffer did not have sufficient space to
-	 * contain the expanded tree. Use fdt_open_into() to move the
-	 * device tree to a buffer with more space. */
-
-/* Error codes: codes for bad parameters */
-#define FDT_ERR_BADOFFSET	4
-	/* FDT_ERR_BADOFFSET: Function was passed a structure block
-	 * offset which is out-of-bounds, or which points to an
-	 * unsuitable part of the structure for the operation. */
-#define FDT_ERR_BADPATH		5
-	/* FDT_ERR_BADPATH: Function was passed a badly formatted path
-	 * (e.g. missing a leading / for a function which requires an
-	 * absolute path) */
-#define FDT_ERR_BADPHANDLE	6
-	/* FDT_ERR_BADPHANDLE: Function was passed an invalid phandle
-	 * value.  phandle values of 0 and -1 are not permitted. */
-#define FDT_ERR_BADSTATE	7
-	/* FDT_ERR_BADSTATE: Function was passed an incomplete device
-	 * tree created by the sequential-write functions, which is
-	 * not sufficiently complete for the requested operation. */
-
-/* Error codes: codes for bad device tree blobs */
-#define FDT_ERR_TRUNCATED	8
-	/* FDT_ERR_TRUNCATED: Structure block of the given device tree
-	 * ends without an FDT_END tag. */
-#define FDT_ERR_BADMAGIC	9
-	/* FDT_ERR_BADMAGIC: Given "device tree" appears not to be a
-	 * device tree at all - it is missing the flattened device
-	 * tree magic number. */
-#define FDT_ERR_BADVERSION	10
-	/* FDT_ERR_BADVERSION: Given device tree has a version which
-	 * can't be handled by the requested operation.  For
-	 * read-write functions, this may mean that fdt_open_into() is
-	 * required to convert the tree to the expected version. */
-#define FDT_ERR_BADSTRUCTURE	11
-	/* FDT_ERR_BADSTRUCTURE: Given device tree has a corrupt
-	 * structure block or other serious error (e.g. misnested
-	 * nodes, or subnodes preceding properties). */
-#define FDT_ERR_BADLAYOUT	12
-	/* FDT_ERR_BADLAYOUT: For read-write functions, the given
-	 * device tree has it's sub-blocks in an order that the
-	 * function can't handle (memory reserve map, then structure,
-	 * then strings).  Use fdt_open_into() to reorganize the tree
-	 * into a form suitable for the read-write operations. */
-
-/* "Can't happen" error indicating a bug in libfdt */
-#define FDT_ERR_INTERNAL	13
-	/* FDT_ERR_INTERNAL: libfdt has failed an internal assertion.
-	 * Should never be returned, if it is, it indicates a bug in
-	 * libfdt itself. */
-
-#define FDT_ERR_MAX		13
-
-/**********************************************************************/
-/* Low-level functions (you probably don't need these)                */
-/**********************************************************************/
-
-const void *fdt_offset_ptr(const void *fdt, int offset, int checklen);
-static inline void *fdt_offset_ptr_w(void *fdt, int offset, int checklen)
-{
-	return (void *)(uintptr_t)fdt_offset_ptr(fdt, offset, checklen);
-}
-
-uint32_t fdt_next_tag(const void *fdt, int offset, int *nextoffset);
-
-/**********************************************************************/
-/* Traversal functions                                                */
-/**********************************************************************/
-
-int fdt_next_node(const void *fdt, int offset, int *depth);
-
-/**********************************************************************/
-/* General functions                                                  */
-/**********************************************************************/
-
-#define fdt_get_header(fdt, field) \
-	(fdt32_to_cpu(((const struct fdt_header *)(fdt))->field))
-#define fdt_magic(fdt) 			(fdt_get_header(fdt, magic))
-#define fdt_totalsize(fdt)		(fdt_get_header(fdt, totalsize))
-#define fdt_off_dt_struct(fdt)		(fdt_get_header(fdt, off_dt_struct))
-#define fdt_off_dt_strings(fdt)		(fdt_get_header(fdt, off_dt_strings))
-#define fdt_off_mem_rsvmap(fdt)		(fdt_get_header(fdt, off_mem_rsvmap))
-#define fdt_version(fdt)		(fdt_get_header(fdt, version))
-#define fdt_last_comp_version(fdt) 	(fdt_get_header(fdt, last_comp_version))
-#define fdt_boot_cpuid_phys(fdt) 	(fdt_get_header(fdt, boot_cpuid_phys))
-#define fdt_size_dt_strings(fdt) 	(fdt_get_header(fdt, size_dt_strings))
-#define fdt_size_dt_struct(fdt)		(fdt_get_header(fdt, size_dt_struct))
-
-#define __fdt_set_hdr(name) \
-	static inline void fdt_set_##name(void *fdt, uint32_t val) \
-	{ \
-		struct fdt_header *fdth = fdt; \
-		fdth->name = cpu_to_fdt32(val); \
-	}
-__fdt_set_hdr(magic);
-__fdt_set_hdr(totalsize);
-__fdt_set_hdr(off_dt_struct);
-__fdt_set_hdr(off_dt_strings);
-__fdt_set_hdr(off_mem_rsvmap);
-__fdt_set_hdr(version);
-__fdt_set_hdr(last_comp_version);
-__fdt_set_hdr(boot_cpuid_phys);
-__fdt_set_hdr(size_dt_strings);
-__fdt_set_hdr(size_dt_struct);
-#undef __fdt_set_hdr
-
-/**
- * fdt_check_header - sanity check a device tree or possible device tree
- * @fdt: pointer to data which might be a flattened device tree
- *
- * fdt_check_header() checks that the given buffer contains what
- * appears to be a flattened device tree with sane information in its
- * header.
- *
- * returns:
- *     0, if the buffer appears to contain a valid device tree
- *     -FDT_ERR_BADMAGIC,
- *     -FDT_ERR_BADVERSION,
- *     -FDT_ERR_BADSTATE, standard meanings, as above
- */
-int fdt_check_header(const void *fdt);
-
-/**
- * fdt_move - move a device tree around in memory
- * @fdt: pointer to the device tree to move
- * @buf: pointer to memory where the device is to be moved
- * @bufsize: size of the memory space at buf
- *
- * fdt_move() relocates, if possible, the device tree blob located at
- * fdt to the buffer at buf of size bufsize.  The buffer may overlap
- * with the existing device tree blob at fdt.  Therefore,
- *     fdt_move(fdt, fdt, fdt_totalsize(fdt))
- * should always succeed.
- *
- * returns:
- *     0, on success
- *     -FDT_ERR_NOSPACE, bufsize is insufficient to contain the device tree
- *     -FDT_ERR_BADMAGIC,
- *     -FDT_ERR_BADVERSION,
- *     -FDT_ERR_BADSTATE, standard meanings
- */
-int fdt_move(const void *fdt, void *buf, int bufsize);
-
-/**********************************************************************/
-/* Read-only functions                                                */
-/**********************************************************************/
-
-/**
- * fdt_string - retrieve a string from the strings block of a device tree
- * @fdt: pointer to the device tree blob
- * @stroffset: offset of the string within the strings block (native endian)
- *
- * fdt_string() retrieves a pointer to a single string from the
- * strings block of the device tree blob at fdt.
- *
- * returns:
- *     a pointer to the string, on success
- *     NULL, if stroffset is out of bounds
- */
-const char *fdt_string(const void *fdt, int stroffset);
-
-/**
- * fdt_num_mem_rsv - retrieve the number of memory reserve map entries
- * @fdt: pointer to the device tree blob
- *
- * Returns the number of entries in the device tree blob's memory
- * reservation map.  This does not include the terminating 0,0 entry
- * or any other (0,0) entries reserved for expansion.
- *
- * returns:
- *     the number of entries
- */
-int fdt_num_mem_rsv(const void *fdt);
-
-/**
- * fdt_get_mem_rsv - retrieve one memory reserve map entry
- * @fdt: pointer to the device tree blob
- * @address, @size: pointers to 64-bit variables
- *
- * On success, *address and *size will contain the address and size of
- * the n-th reserve map entry from the device tree blob, in
- * native-endian format.
- *
- * returns:
- *     0, on success
- *     -FDT_ERR_BADMAGIC,
- *     -FDT_ERR_BADVERSION,
- *     -FDT_ERR_BADSTATE, standard meanings
- */
-int fdt_get_mem_rsv(const void *fdt, int n, uint64_t *address, uint64_t *size);
-
-/**
- * fdt_subnode_offset_namelen - find a subnode based on substring
- * @fdt: pointer to the device tree blob
- * @parentoffset: structure block offset of a node
- * @name: name of the subnode to locate
- * @namelen: number of characters of name to consider
- *
- * Identical to fdt_subnode_offset(), but only examine the first
- * namelen characters of name for matching the subnode name.  This is
- * useful for finding subnodes based on a portion of a larger string,
- * such as a full path.
- */
-int fdt_subnode_offset_namelen(const void *fdt, int parentoffset,
-			       const char *name, int namelen);
-/**
- * fdt_subnode_offset - find a subnode of a given node
- * @fdt: pointer to the device tree blob
- * @parentoffset: structure block offset of a node
- * @name: name of the subnode to locate
- *
- * fdt_subnode_offset() finds a subnode of the node at structure block
- * offset parentoffset with the given name.  name may include a unit
- * address, in which case fdt_subnode_offset() will find the subnode
- * with that unit address, or the unit address may be omitted, in
- * which case fdt_subnode_offset() will find an arbitrary subnode
- * whose name excluding unit address matches the given name.
- *
- * returns:
- *	structure block offset of the requested subnode (>=0), on success
- *	-FDT_ERR_NOTFOUND, if the requested subnode does not exist
- *	-FDT_ERR_BADOFFSET, if parentoffset did not point to an FDT_BEGIN_NODE tag
- *      -FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE,
- *	-FDT_ERR_TRUNCATED, standard meanings.
- */
-int fdt_subnode_offset(const void *fdt, int parentoffset, const char *name);
-
-/**
- * fdt_path_offset - find a tree node by its full path
- * @fdt: pointer to the device tree blob
- * @path: full path of the node to locate
- *
- * fdt_path_offset() finds a node of a given path in the device tree.
- * Each path component may omit the unit address portion, but the
- * results of this are undefined if any such path component is
- * ambiguous (that is if there are multiple nodes at the relevant
- * level matching the given component, differentiated only by unit
- * address).
- *
- * returns:
- *	structure block offset of the node with the requested path (>=0), on success
- *	-FDT_ERR_BADPATH, given path does not begin with '/' or is invalid
- *	-FDT_ERR_NOTFOUND, if the requested node does not exist
- *      -FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE,
- *	-FDT_ERR_TRUNCATED, standard meanings.
- */
-int fdt_path_offset(const void *fdt, const char *path);
-
-/**
- * fdt_get_name - retrieve the name of a given node
- * @fdt: pointer to the device tree blob
- * @nodeoffset: structure block offset of the starting node
- * @lenp: pointer to an integer variable (will be overwritten) or NULL
- *
- * fdt_get_name() retrieves the name (including unit address) of the
- * device tree node at structure block offset nodeoffset.  If lenp is
- * non-NULL, the length of this name is also returned, in the integer
- * pointed to by lenp.
- *
- * returns:
- *	pointer to the node's name, on success
- *		If lenp is non-NULL, *lenp contains the length of that name (>=0)
- *	NULL, on error
- *		if lenp is non-NULL *lenp contains an error code (<0):
- *		-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
- *		-FDT_ERR_BADMAGIC,
- *		-FDT_ERR_BADVERSION,
- *		-FDT_ERR_BADSTATE, standard meanings
- */
-const char *fdt_get_name(const void *fdt, int nodeoffset, int *lenp);
-
-/**
- * fdt_get_property - find a given property in a given node
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of the node whose property to find
- * @name: name of the property to find
- * @lenp: pointer to an integer variable (will be overwritten) or NULL
- *
- * fdt_get_property() retrieves a pointer to the fdt_property
- * structure within the device tree blob corresponding to the property
- * named 'name' of the node at offset nodeoffset.  If lenp is
- * non-NULL, the length of the property value is also returned, in the
- * integer pointed to by lenp.
- *
- * returns:
- *	pointer to the structure representing the property
- *		if lenp is non-NULL, *lenp contains the length of the property
- *		value (>=0)
- *	NULL, on error
- *		if lenp is non-NULL, *lenp contains an error code (<0):
- *		-FDT_ERR_NOTFOUND, node does not have named property
- *		-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
- *		-FDT_ERR_BADMAGIC,
- *		-FDT_ERR_BADVERSION,
- *		-FDT_ERR_BADSTATE,
- *		-FDT_ERR_BADSTRUCTURE,
- *		-FDT_ERR_TRUNCATED, standard meanings
- */
-const struct fdt_property *fdt_get_property(const void *fdt, int nodeoffset,
-					    const char *name, int *lenp);
-static inline struct fdt_property *fdt_get_property_w(void *fdt, int nodeoffset,
-						      const char *name,
-						      int *lenp)
-{
-	return (struct fdt_property *)(uintptr_t)
-		fdt_get_property(fdt, nodeoffset, name, lenp);
-}
-
-/**
- * fdt_getprop - retrieve the value of a given property
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of the node whose property to find
- * @name: name of the property to find
- * @lenp: pointer to an integer variable (will be overwritten) or NULL
- *
- * fdt_getprop() retrieves a pointer to the value of the property
- * named 'name' of the node at offset nodeoffset (this will be a
- * pointer to within the device blob itself, not a copy of the value).
- * If lenp is non-NULL, the length of the property value is also
- * returned, in the integer pointed to by lenp.
- *
- * returns:
- *	pointer to the property's value
- *		if lenp is non-NULL, *lenp contains the length of the property
- *		value (>=0)
- *	NULL, on error
- *		if lenp is non-NULL, *lenp contains an error code (<0):
- *		-FDT_ERR_NOTFOUND, node does not have named property
- *		-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
- *		-FDT_ERR_BADMAGIC,
- *		-FDT_ERR_BADVERSION,
- *		-FDT_ERR_BADSTATE,
- *		-FDT_ERR_BADSTRUCTURE,
- *		-FDT_ERR_TRUNCATED, standard meanings
- */
-const void *fdt_getprop(const void *fdt, int nodeoffset,
-			const char *name, int *lenp);
-static inline void *fdt_getprop_w(void *fdt, int nodeoffset,
-				  const char *name, int *lenp)
-{
-	return (void *)(uintptr_t)fdt_getprop(fdt, nodeoffset, name, lenp);
-}
-
-/**
- * fdt_get_phandle - retrieve the phandle of a given node
- * @fdt: pointer to the device tree blob
- * @nodeoffset: structure block offset of the node
- *
- * fdt_get_phandle() retrieves the phandle of the device tree node at
- * structure block offset nodeoffset.
- *
- * returns:
- *	the phandle of the node at nodeoffset, on success (!= 0, != -1)
- *	0, if the node has no phandle, or another error occurs
- */
-uint32_t fdt_get_phandle(const void *fdt, int nodeoffset);
-
-/**
- * fdt_get_path - determine the full path of a node
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of the node whose path to find
- * @buf: character buffer to contain the returned path (will be overwritten)
- * @buflen: size of the character buffer at buf
- *
- * fdt_get_path() computes the full path of the node at offset
- * nodeoffset, and records that path in the buffer at buf.
- *
- * NOTE: This function is expensive, as it must scan the device tree
- * structure from the start to nodeoffset.
- *
- * returns:
- *	0, on success
- *		buf contains the absolute path of the node at
- *		nodeoffset, as a NUL-terminated string.
- * 	-FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
- *	-FDT_ERR_NOSPACE, the path of the given node is longer than (bufsize-1)
- *		characters and will not fit in the given buffer.
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE, standard meanings
- */
-int fdt_get_path(const void *fdt, int nodeoffset, char *buf, int buflen);
-
-/**
- * fdt_supernode_atdepth_offset - find a specific ancestor of a node
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of the node whose parent to find
- * @supernodedepth: depth of the ancestor to find
- * @nodedepth: pointer to an integer variable (will be overwritten) or NULL
- *
- * fdt_supernode_atdepth_offset() finds an ancestor of the given node
- * at a specific depth from the root (where the root itself has depth
- * 0, its immediate subnodes depth 1 and so forth).  So
- *	fdt_supernode_atdepth_offset(fdt, nodeoffset, 0, NULL);
- * will always return 0, the offset of the root node.  If the node at
- * nodeoffset has depth D, then:
- *	fdt_supernode_atdepth_offset(fdt, nodeoffset, D, NULL);
- * will return nodeoffset itself.
- *
- * NOTE: This function is expensive, as it must scan the device tree
- * structure from the start to nodeoffset.
- *
- * returns:
-
- *	structure block offset of the node at node offset's ancestor
- *		of depth supernodedepth (>=0), on success
- * 	-FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
-*	-FDT_ERR_NOTFOUND, supernodedepth was greater than the depth of nodeoffset
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE, standard meanings
- */
-int fdt_supernode_atdepth_offset(const void *fdt, int nodeoffset,
-				 int supernodedepth, int *nodedepth);
-
-/**
- * fdt_node_depth - find the depth of a given node
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of the node whose parent to find
- *
- * fdt_node_depth() finds the depth of a given node.  The root node
- * has depth 0, its immediate subnodes depth 1 and so forth.
- *
- * NOTE: This function is expensive, as it must scan the device tree
- * structure from the start to nodeoffset.
- *
- * returns:
- *	depth of the node at nodeoffset (>=0), on success
- * 	-FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE, standard meanings
- */
-int fdt_node_depth(const void *fdt, int nodeoffset);
-
-/**
- * fdt_parent_offset - find the parent of a given node
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of the node whose parent to find
- *
- * fdt_parent_offset() locates the parent node of a given node (that
- * is, it finds the offset of the node which contains the node at
- * nodeoffset as a subnode).
- *
- * NOTE: This function is expensive, as it must scan the device tree
- * structure from the start to nodeoffset, *twice*.
- *
- * returns:
- *	structure block offset of the parent of the node at nodeoffset
- *		(>=0), on success
- * 	-FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE, standard meanings
- */
-int fdt_parent_offset(const void *fdt, int nodeoffset);
-
-/**
- * fdt_node_offset_by_prop_value - find nodes with a given property value
- * @fdt: pointer to the device tree blob
- * @startoffset: only find nodes after this offset
- * @propname: property name to check
- * @propval: property value to search for
- * @proplen: length of the value in propval
- *
- * fdt_node_offset_by_prop_value() returns the offset of the first
- * node after startoffset, which has a property named propname whose
- * value is of length proplen and has value equal to propval; or if
- * startoffset is -1, the very first such node in the tree.
- *
- * To iterate through all nodes matching the criterion, the following
- * idiom can be used:
- *	offset = fdt_node_offset_by_prop_value(fdt, -1, propname,
- *					       propval, proplen);
- *	while (offset != -FDT_ERR_NOTFOUND) {
- *		// other code here
- *		offset = fdt_node_offset_by_prop_value(fdt, offset, propname,
- *						       propval, proplen);
- *	}
- *
- * Note the -1 in the first call to the function, if 0 is used here
- * instead, the function will never locate the root node, even if it
- * matches the criterion.
- *
- * returns:
- *	structure block offset of the located node (>= 0, >startoffset),
- *		 on success
- *	-FDT_ERR_NOTFOUND, no node matching the criterion exists in the
- *		tree after startoffset
- * 	-FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE, standard meanings
- */
-int fdt_node_offset_by_prop_value(const void *fdt, int startoffset,
-				  const char *propname,
-				  const void *propval, int proplen);
-
-/**
- * fdt_node_offset_by_phandle - find the node with a given phandle
- * @fdt: pointer to the device tree blob
- * @phandle: phandle value
- *
- * fdt_node_offset_by_phandle() returns the offset of the node
- * which has the given phandle value.  If there is more than one node
- * in the tree with the given phandle (an invalid tree), results are
- * undefined.
- *
- * returns:
- *	structure block offset of the located node (>= 0), on success
- *	-FDT_ERR_NOTFOUND, no node with that phandle exists
- *	-FDT_ERR_BADPHANDLE, given phandle value was invalid (0 or -1)
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE, standard meanings
- */
-int fdt_node_offset_by_phandle(const void *fdt, uint32_t phandle);
-
-/**
- * fdt_node_check_compatible: check a node's compatible property
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of a tree node
- * @compatible: string to match against
- *
- *
- * fdt_node_check_compatible() returns 0 if the given node contains a
- * 'compatible' property with the given string as one of its elements,
- * it returns non-zero otherwise, or on error.
- *
- * returns:
- *	0, if the node has a 'compatible' property listing the given string
- *	1, if the node has a 'compatible' property, but it does not list
- *		the given string
- *	-FDT_ERR_NOTFOUND, if the given node has no 'compatible' property
- * 	-FDT_ERR_BADOFFSET, if nodeoffset does not refer to a BEGIN_NODE tag
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE, standard meanings
- */
-int fdt_node_check_compatible(const void *fdt, int nodeoffset,
-			      const char *compatible);
-
-/**
- * fdt_node_offset_by_compatible - find nodes with a given 'compatible' value
- * @fdt: pointer to the device tree blob
- * @startoffset: only find nodes after this offset
- * @compatible: 'compatible' string to match against
- *
- * fdt_node_offset_by_compatible() returns the offset of the first
- * node after startoffset, which has a 'compatible' property which
- * lists the given compatible string; or if startoffset is -1, the
- * very first such node in the tree.
- *
- * To iterate through all nodes matching the criterion, the following
- * idiom can be used:
- *	offset = fdt_node_offset_by_compatible(fdt, -1, compatible);
- *	while (offset != -FDT_ERR_NOTFOUND) {
- *		// other code here
- *		offset = fdt_node_offset_by_compatible(fdt, offset, compatible);
- *	}
- *
- * Note the -1 in the first call to the function, if 0 is used here
- * instead, the function will never locate the root node, even if it
- * matches the criterion.
- *
- * returns:
- *	structure block offset of the located node (>= 0, >startoffset),
- *		 on success
- *	-FDT_ERR_NOTFOUND, no node matching the criterion exists in the
- *		tree after startoffset
- * 	-FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE, standard meanings
- */
-int fdt_node_offset_by_compatible(const void *fdt, int startoffset,
-				  const char *compatible);
-
-/**********************************************************************/
-/* Write-in-place functions                                           */
-/**********************************************************************/
-
-/**
- * fdt_setprop_inplace - change a property's value, but not its size
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of the node whose property to change
- * @name: name of the property to change
- * @val: pointer to data to replace the property value with
- * @len: length of the property value
- *
- * fdt_setprop_inplace() replaces the value of a given property with
- * the data in val, of length len.  This function cannot change the
- * size of a property, and so will only work if len is equal to the
- * current length of the property.
- *
- * This function will alter only the bytes in the blob which contain
- * the given property value, and will not alter or move any other part
- * of the tree.
- *
- * returns:
- *	0, on success
- *	-FDT_ERR_NOSPACE, if len is not equal to the property's current length
- *	-FDT_ERR_NOTFOUND, node does not have the named property
- *	-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE,
- *	-FDT_ERR_TRUNCATED, standard meanings
- */
-int fdt_setprop_inplace(void *fdt, int nodeoffset, const char *name,
-			const void *val, int len);
-
-/**
- * fdt_setprop_inplace_cell - change the value of a single-cell property
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of the node whose property to change
- * @name: name of the property to change
- * @val: cell (32-bit integer) value to replace the property with
- *
- * fdt_setprop_inplace_cell() replaces the value of a given property
- * with the 32-bit integer cell value in val, converting val to
- * big-endian if necessary.  This function cannot change the size of a
- * property, and so will only work if the property already exists and
- * has length 4.
- *
- * This function will alter only the bytes in the blob which contain
- * the given property value, and will not alter or move any other part
- * of the tree.
- *
- * returns:
- *	0, on success
- *	-FDT_ERR_NOSPACE, if the property's length is not equal to 4
-  *	-FDT_ERR_NOTFOUND, node does not have the named property
- *	-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE,
- *	-FDT_ERR_TRUNCATED, standard meanings
- */
-static inline int fdt_setprop_inplace_cell(void *fdt, int nodeoffset,
-					   const char *name, uint32_t val)
-{
-	val = cpu_to_fdt32(val);
-	return fdt_setprop_inplace(fdt, nodeoffset, name, &val, sizeof(val));
-}
-
-/**
- * fdt_nop_property - replace a property with nop tags
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of the node whose property to nop
- * @name: name of the property to nop
- *
- * fdt_nop_property() will replace a given property's representation
- * in the blob with FDT_NOP tags, effectively removing it from the
- * tree.
- *
- * This function will alter only the bytes in the blob which contain
- * the property, and will not alter or move any other part of the
- * tree.
- *
- * returns:
- *	0, on success
- *	-FDT_ERR_NOTFOUND, node does not have the named property
- *	-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE,
- *	-FDT_ERR_TRUNCATED, standard meanings
- */
-int fdt_nop_property(void *fdt, int nodeoffset, const char *name);
-
-/**
- * fdt_nop_node - replace a node (subtree) with nop tags
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of the node to nop
- *
- * fdt_nop_node() will replace a given node's representation in the
- * blob, including all its subnodes, if any, with FDT_NOP tags,
- * effectively removing it from the tree.
- *
- * This function will alter only the bytes in the blob which contain
- * the node and its properties and subnodes, and will not alter or
- * move any other part of the tree.
- *
- * returns:
- *	0, on success
- *	-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE,
- *	-FDT_ERR_TRUNCATED, standard meanings
- */
-int fdt_nop_node(void *fdt, int nodeoffset);
-
-/**********************************************************************/
-/* Sequential write functions                                         */
-/**********************************************************************/
-
-int fdt_create(void *buf, int bufsize);
-int fdt_add_reservemap_entry(void *fdt, uint64_t addr, uint64_t size);
-int fdt_finish_reservemap(void *fdt);
-int fdt_begin_node(void *fdt, const char *name);
-int fdt_property(void *fdt, const char *name, const void *val, int len);
-static inline int fdt_property_cell(void *fdt, const char *name, uint32_t val)
-{
-	val = cpu_to_fdt32(val);
-	return fdt_property(fdt, name, &val, sizeof(val));
-}
-#define fdt_property_string(fdt, name, str) \
-	fdt_property(fdt, name, str, strlen(str)+1)
-int fdt_end_node(void *fdt);
-int fdt_finish(void *fdt);
-
-/**********************************************************************/
-/* Read-write functions                                               */
-/**********************************************************************/
-
-int fdt_open_into(const void *fdt, void *buf, int bufsize);
-int fdt_pack(void *fdt);
-
-/**
- * fdt_add_mem_rsv - add one memory reserve map entry
- * @fdt: pointer to the device tree blob
- * @address, @size: 64-bit values (native endian)
- *
- * Adds a reserve map entry to the given blob reserving a region at
- * address address of length size.
- *
- * This function will insert data into the reserve map and will
- * therefore change the indexes of some entries in the table.
- *
- * returns:
- *	0, on success
- *	-FDT_ERR_NOSPACE, there is insufficient free space in the blob to
- *		contain the new reservation entry
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE,
- *	-FDT_ERR_BADLAYOUT,
- *	-FDT_ERR_TRUNCATED, standard meanings
- */
-int fdt_add_mem_rsv(void *fdt, uint64_t address, uint64_t size);
-
-/**
- * fdt_del_mem_rsv - remove a memory reserve map entry
- * @fdt: pointer to the device tree blob
- * @n: entry to remove
- *
- * fdt_del_mem_rsv() removes the n-th memory reserve map entry from
- * the blob.
- *
- * This function will delete data from the reservation table and will
- * therefore change the indexes of some entries in the table.
- *
- * returns:
- *	0, on success
- *	-FDT_ERR_NOTFOUND, there is no entry of the given index (i.e. there
- *		are less than n+1 reserve map entries)
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE,
- *	-FDT_ERR_BADLAYOUT,
- *	-FDT_ERR_TRUNCATED, standard meanings
- */
-int fdt_del_mem_rsv(void *fdt, int n);
-
-/**
- * fdt_set_name - change the name of a given node
- * @fdt: pointer to the device tree blob
- * @nodeoffset: structure block offset of a node
- * @name: name to give the node
- *
- * fdt_set_name() replaces the name (including unit address, if any)
- * of the given node with the given string.  NOTE: this function can't
- * efficiently check if the new name is unique amongst the given
- * node's siblings; results are undefined if this function is invoked
- * with a name equal to one of the given node's siblings.
- *
- * This function may insert or delete data from the blob, and will
- * therefore change the offsets of some existing nodes.
- *
- * returns:
- *	0, on success
- *	-FDT_ERR_NOSPACE, there is insufficient free space in the blob
- *		to contain the new name
- *	-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE, standard meanings
- */
-int fdt_set_name(void *fdt, int nodeoffset, const char *name);
-
-/**
- * fdt_setprop - create or change a property
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of the node whose property to change
- * @name: name of the property to change
- * @val: pointer to data to set the property value to
- * @len: length of the property value
- *
- * fdt_setprop() sets the value of the named property in the given
- * node to the given value and length, creating the property if it
- * does not already exist.
- *
- * This function may insert or delete data from the blob, and will
- * therefore change the offsets of some existing nodes.
- *
- * returns:
- *	0, on success
- *	-FDT_ERR_NOSPACE, there is insufficient free space in the blob to
- *		contain the new property value
- *	-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
- *	-FDT_ERR_BADLAYOUT,
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE,
- *	-FDT_ERR_BADLAYOUT,
- *	-FDT_ERR_TRUNCATED, standard meanings
- */
-int fdt_setprop(void *fdt, int nodeoffset, const char *name,
-		const void *val, int len);
-
-/**
- * fdt_setprop_cell - set a property to a single cell value
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of the node whose property to change
- * @name: name of the property to change
- * @val: 32-bit integer value for the property (native endian)
- *
- * fdt_setprop_cell() sets the value of the named property in the
- * given node to the given cell value (converting to big-endian if
- * necessary), or creates a new property with that value if it does
- * not already exist.
- *
- * This function may insert or delete data from the blob, and will
- * therefore change the offsets of some existing nodes.
- *
- * returns:
- *	0, on success
- *	-FDT_ERR_NOSPACE, there is insufficient free space in the blob to
- *		contain the new property value
- *	-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
- *	-FDT_ERR_BADLAYOUT,
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE,
- *	-FDT_ERR_BADLAYOUT,
- *	-FDT_ERR_TRUNCATED, standard meanings
- */
-static inline int fdt_setprop_cell(void *fdt, int nodeoffset, const char *name,
-				   uint32_t val)
-{
-	val = cpu_to_fdt32(val);
-	return fdt_setprop(fdt, nodeoffset, name, &val, sizeof(val));
-}
-
-/**
- * fdt_setprop_string - set a property to a string value
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of the node whose property to change
- * @name: name of the property to change
- * @str: string value for the property
- *
- * fdt_setprop_string() sets the value of the named property in the
- * given node to the given string value (using the length of the
- * string to determine the new length of the property), or creates a
- * new property with that value if it does not already exist.
- *
- * This function may insert or delete data from the blob, and will
- * therefore change the offsets of some existing nodes.
- *
- * returns:
- *	0, on success
- *	-FDT_ERR_NOSPACE, there is insufficient free space in the blob to
- *		contain the new property value
- *	-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
- *	-FDT_ERR_BADLAYOUT,
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE,
- *	-FDT_ERR_BADLAYOUT,
- *	-FDT_ERR_TRUNCATED, standard meanings
- */
-#define fdt_setprop_string(fdt, nodeoffset, name, str) \
-	fdt_setprop((fdt), (nodeoffset), (name), (str), strlen(str)+1)
-
-/**
- * fdt_delprop - delete a property
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of the node whose property to nop
- * @name: name of the property to nop
- *
- * fdt_del_property() will delete the given property.
- *
- * This function will delete data from the blob, and will therefore
- * change the offsets of some existing nodes.
- *
- * returns:
- *	0, on success
- *	-FDT_ERR_NOTFOUND, node does not have the named property
- *	-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
- *	-FDT_ERR_BADLAYOUT,
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE,
- *	-FDT_ERR_TRUNCATED, standard meanings
- */
-int fdt_delprop(void *fdt, int nodeoffset, const char *name);
-
-/**
- * fdt_add_subnode_namelen - creates a new node based on substring
- * @fdt: pointer to the device tree blob
- * @parentoffset: structure block offset of a node
- * @name: name of the subnode to locate
- * @namelen: number of characters of name to consider
- *
- * Identical to fdt_add_subnode(), but use only the first namelen
- * characters of name as the name of the new node.  This is useful for
- * creating subnodes based on a portion of a larger string, such as a
- * full path.
- */
-int fdt_add_subnode_namelen(void *fdt, int parentoffset,
-			    const char *name, int namelen);
-
-/**
- * fdt_add_subnode - creates a new node
- * @fdt: pointer to the device tree blob
- * @parentoffset: structure block offset of a node
- * @name: name of the subnode to locate
- *
- * fdt_add_subnode() creates a new node as a subnode of the node at
- * structure block offset parentoffset, with the given name (which
- * should include the unit address, if any).
- *
- * This function will insert data into the blob, and will therefore
- * change the offsets of some existing nodes.
-
- * returns:
- *	structure block offset of the created nodeequested subnode (>=0), on success
- *	-FDT_ERR_NOTFOUND, if the requested subnode does not exist
- *	-FDT_ERR_BADOFFSET, if parentoffset did not point to an FDT_BEGIN_NODE tag
- *	-FDT_ERR_EXISTS, if the node at parentoffset already has a subnode of
- *		the given name
- *	-FDT_ERR_NOSPACE, if there is insufficient free space in the
- *		blob to contain the new node
- *	-FDT_ERR_NOSPACE
- *	-FDT_ERR_BADLAYOUT
- *      -FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE,
- *	-FDT_ERR_TRUNCATED, standard meanings.
- */
-int fdt_add_subnode(void *fdt, int parentoffset, const char *name);
-
-/**
- * fdt_del_node - delete a node (subtree)
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of the node to nop
- *
- * fdt_del_node() will remove the given node, including all its
- * subnodes if any, from the blob.
- *
- * This function will delete data from the blob, and will therefore
- * change the offsets of some existing nodes.
- *
- * returns:
- *	0, on success
- *	-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
- *	-FDT_ERR_BADLAYOUT,
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE,
- *	-FDT_ERR_TRUNCATED, standard meanings
- */
-int fdt_del_node(void *fdt, int nodeoffset);
-
-/**********************************************************************/
-/* Debugging / informational functions                                */
-/**********************************************************************/
-
-const char *fdt_strerror(int errval);
-
-#endif /* _LIBFDT_H */