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author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-12-08 15:46:56 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-12-08 15:46:56 (GMT) |
commit | 3ad1f3b35e8309ec93454dbf89beaafcdb5312da (patch) | |
tree | d26e60c334b70adc310b807a33d3491dc205d52d /drivers | |
parent | 1557d33007f63dd96e5d15f33af389378e5f2e54 (diff) | |
parent | e91edcf5a2940bb7f1f316c871dfe9e2aaf9d6d9 (diff) | |
download | linux-fsl-qoriq-3ad1f3b35e8309ec93454dbf89beaafcdb5312da.tar.xz |
Merge branch 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6
* 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6:
of: merge of_find_all_nodes() implementations
of: merge other miscellaneous prototypes
of: merge of_*_flat_dt*() functions
of: merge of_node_get(), of_node_put() and of_find_all_nodes()
of: merge of_read_number() an of_read_ulong()
of: merge of_node_*_flag() and set_node_proc_entry()
of: merge struct boot_param_header from Microblaze and PowerPC
of: add common header for flattened device tree representation
of: Move OF_IS_DYNAMIC and OF_MARK_DYNAMIC macros to of.h
of: merge struct device_node
of: merge phandle, ihandle and struct property
of: Rework linux/of.h and asm/prom.h include ordering
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/of/base.c | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/drivers/of/base.c b/drivers/of/base.c index ddf224d..e6627b2 100644 --- a/drivers/of/base.c +++ b/drivers/of/base.c @@ -9,7 +9,8 @@ * * Adapted for sparc and sparc64 by David S. Miller davem@davemloft.net * - * Reconsolidated from arch/x/kernel/prom.c by Stephen Rothwell. + * Reconsolidated from arch/x/kernel/prom.c by Stephen Rothwell and + * Grant Likely. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License @@ -82,6 +83,29 @@ struct property *of_find_property(const struct device_node *np, } EXPORT_SYMBOL(of_find_property); +/** + * of_find_all_nodes - Get next node in global list + * @prev: Previous node or NULL to start iteration + * of_node_put() will be called on it + * + * Returns a node pointer with refcount incremented, use + * of_node_put() on it when done. + */ +struct device_node *of_find_all_nodes(struct device_node *prev) +{ + struct device_node *np; + + read_lock(&devtree_lock); + np = prev ? prev->allnext : allnodes; + for (; np != NULL; np = np->allnext) + if (of_node_get(np)) + break; + of_node_put(prev); + read_unlock(&devtree_lock); + return np; +} +EXPORT_SYMBOL(of_find_all_nodes); + /* * Find a property with a given name for a given node * and return the value. |