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fdt_subnode_offset

libfdt_sys

Function fdt_subnode_offset 

Source 
pub unsafe extern "C" fn fdt_subnode_offset(
    fdt: *const c_void,
    parentoffset: c_int,
    name: *const c_char,
) -> c_int
Expand description

fdt_subnode_offset - find a subnode of a given node @fdt: pointer to the device tree blob @parentoffset: structure block offset of a node @name: name of the subnode to locate

fdt_subnode_offset() finds a subnode of the node at structure block offset parentoffset with the given name. name may include a unit address, in which case fdt_subnode_offset() will find the subnode with that unit address, or the unit address may be omitted, in which case fdt_subnode_offset() will find an arbitrary subnode whose name excluding unit address matches the given name.

returns: structure block offset of the requested subnode (>=0), on success -FDT_ERR_NOTFOUND, if the requested subnode does not exist -FDT_ERR_BADOFFSET, if parentoffset did not point to an FDT_BEGIN_NODE tag -FDT_ERR_BADMAGIC, -FDT_ERR_BADVERSION, -FDT_ERR_BADSTATE, -FDT_ERR_BADSTRUCTURE, -FDT_ERR_TRUNCATED, standard meanings.