int fdt_supernode_atdepth_offset()

in EmbeddedPkg/Library/FdtLib/fdt_ro.c [441:475]

• 28 lines of code
• 11 McCabe index (conditional complexity)

int fdt_supernode_atdepth_offset(const void *fdt, int nodeoffset,
				 int supernodedepth, int *nodedepth)
{
	int offset, depth;
	int supernodeoffset = -FDT_ERR_INTERNAL;

	FDT_CHECK_HEADER(fdt);

	if (supernodedepth < 0)
		return -FDT_ERR_NOTFOUND;

	for (offset = 0, depth = 0;
	     (offset >= 0) && (offset <= nodeoffset);
	     offset = fdt_next_node(fdt, offset, &depth)) {
		if (depth == supernodedepth)
			supernodeoffset = offset;

		if (offset == nodeoffset) {
			if (nodedepth)
				*nodedepth = depth;

			if (supernodedepth > depth)
				return -FDT_ERR_NOTFOUND;
			else
				return supernodeoffset;
		}
	}

	if ((offset == -FDT_ERR_NOTFOUND) || (offset >= 0))
		return -FDT_ERR_BADOFFSET;
	else if (offset == -FDT_ERR_BADOFFSET)
		return -FDT_ERR_BADSTRUCTURE;

	return offset; /* error from fdt_next_node() */
}