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| author | Teresa Gámez <t.gamez@phytec.de> | 2014-09-30 13:15:27 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2014-10-01 08:13:02 +0200 |
| commit | 55475204cd0939f9c426c648706bf63486029657 (patch) | |
| tree | a22eee57d8070a990f93986f1ba31207460ba38f /drivers | |
| parent | 1e19346e978944599ef05899314706ab2f800707 (diff) | |
| download | barebox-55475204cd0939f9c426c648706bf63486029657.tar.gz barebox-55475204cd0939f9c426c648706bf63486029657.tar.xz | |
of: base: Add of_find_node_by_phandle_from
Added of_find_node_by_phandle_from() to find nodes by
phandle with a given root node.
Signed-off-by: Teresa Gámez <t.gamez@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/of/base.c | 28 |
1 files changed, 24 insertions, 4 deletions
diff --git a/drivers/of/base.c b/drivers/of/base.c index c440a69e6c..061fc79e60 100644 --- a/drivers/of/base.c +++ b/drivers/of/base.c @@ -265,19 +265,39 @@ struct device_node *of_find_node_by_alias(struct device_node *root, const char * EXPORT_SYMBOL_GPL(of_find_node_by_alias); /* - * of_find_node_by_phandle - Find a node given a phandle - * @handle: phandle of the node to find + * of_find_node_by_phandle_from - Find a node given a phandle from given + * root node. + * @handle: phandle of the node to find + * @root: root node of the tree to search in. If NULL use the + * internal tree. */ -struct device_node *of_find_node_by_phandle(phandle phandle) +struct device_node *of_find_node_by_phandle_from(phandle phandle, + struct device_node *root) { struct device_node *node; - of_tree_for_each_node_from(node, root_node) + if (!root) + root = root_node; + + if (!root) + return 0; + + of_tree_for_each_node_from(node, root) if (node->phandle == phandle) return node; return NULL; } +EXPORT_SYMBOL(of_find_node_by_phandle_from); + +/* + * of_find_node_by_phandle - Find a node given a phandle + * @handle: phandle of the node to find + */ +struct device_node *of_find_node_by_phandle(phandle phandle) +{ + return of_find_node_by_phandle_from(phandle, root_node); +} EXPORT_SYMBOL(of_find_node_by_phandle); /* |