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fdt_parent_offset

libfdt_sys

Function fdt_parent_offset 

Source 
pub unsafe extern "C" fn fdt_parent_offset(
    fdt: *const c_void,
    nodeoffset: c_int,
) -> c_int
Expand description

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