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of: find also nodes by mixture of alias and path 

Let of_find_node_by_path_or_alias also find a node starting with an alias
followed by a path like "i2c0/tps@24"

Signed-off-by: Jan Weitzel <j.weitzel@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Jan Weitzel 2014-01-06 13:45:43 +01:00 committed by Sascha Hauer
parent d95f27aaa8
commit 1ebf5ff0c1
1 changed files with 22 additions and 1 deletions
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23
drivers/of/base.c
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@ -1378,11 +1378,32 @@ EXPORT_SYMBOL(of_find_node_by_path);
struct device_node *of_find_node_by_path_or_alias(struct device_node *root,
const char *str)
{
struct device_node *node;
const char *slash;
char *alias;
size_t len = 0;
if (*str == '/')
return of_find_node_by_path_from(root, str);
else
slash = strchr(str, '/');
if (!slash)
return of_find_node_by_alias(root, str);
len = slash - str + 1;
alias = xmalloc(len);
strlcpy(alias, str, len);
node = of_find_node_by_alias(root, alias);
if (!node)
goto out;
node = of_find_node_by_path_from(node, slash);
out:
free(alias);
return node;
}
EXPORT_SYMBOL(of_find_node_by_path_or_alias);