From 8e9685715bf78421da48a84040aba3801f66bf47 Mon Sep 17 00:00:00 2001 From: Maxime Ripard Date: Tue, 5 Jul 2016 10:26:41 +0200 Subject: libfdt: Add fdt_path_offset_namelen Add a namelen variant of fdt_path_offset to retrieve the node offset using only a fixed number of characters. Reviewed-by: Simon Glass Signed-off-by: Maxime Ripard --- include/libfdt.h | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) (limited to 'include/libfdt.h') diff --git a/include/libfdt.h b/include/libfdt.h index 4643be5adf..f13b01f08f 100644 --- a/include/libfdt.h +++ b/include/libfdt.h @@ -365,6 +365,17 @@ int fdt_subnode_offset_namelen(const void *fdt, int parentoffset, */ int fdt_subnode_offset(const void *fdt, int parentoffset, const char *name); +/** + * fdt_path_offset_namelen - find a tree node based on substring + * @fdt: pointer to the device tree blob + * @path: full path of the node to locate + * @namelen: number of characters of name to consider + * + * Identical to fdt_path_offset(), but only examine the first + * namelen characters of path for matching the node path. + */ +int fdt_path_offset_namelen(const void *fdt, const char *path, int namelen); + /** * fdt_path_offset - find a tree node by its full path * @fdt: pointer to the device tree blob @@ -387,7 +398,10 @@ int fdt_subnode_offset(const void *fdt, int parentoffset, const char *name); * -FDT_ERR_BADSTRUCTURE, * -FDT_ERR_TRUNCATED, standard meanings. */ -int fdt_path_offset(const void *fdt, const char *path); +static inline int fdt_path_offset(const void *fdt, const char *path) +{ + return fdt_path_offset_namelen(fdt, path, strlen(path)); +} /** * fdt_get_name - retrieve the name of a given node -- cgit v1.2.3