static int overlay_apply_node()

in EmbeddedPkg/Library/FdtLib/fdt_overlay.c [603:648]

• 38 lines of code
• 8 McCabe index (conditional complexity)

static int overlay_apply_node(void *fdt, int target,
			      void *fdto, int node)
{
	int property;
	int subnode;

	fdt_for_each_property_offset(property, fdto, node) {
		const char *name;
		const void *prop;
		int prop_len;
		int ret;

		prop = fdt_getprop_by_offset(fdto, property, &name,
					     &prop_len);
		if (prop_len == -FDT_ERR_NOTFOUND)
			return -FDT_ERR_INTERNAL;
		if (prop_len < 0)
			return prop_len;

		ret = fdt_setprop(fdt, target, name, prop, prop_len);
		if (ret)
			return ret;
	}

	fdt_for_each_subnode(subnode, fdto, node) {
		const char *name = fdt_get_name(fdto, subnode, NULL);
		int nnode;
		int ret;

		nnode = fdt_add_subnode(fdt, target, name);
		if (nnode == -FDT_ERR_EXISTS) {
			nnode = fdt_subnode_offset(fdt, target, name);
			if (nnode == -FDT_ERR_NOTFOUND)
				return -FDT_ERR_INTERNAL;
		}

		if (nnode < 0)
			return nnode;

		ret = overlay_apply_node(fdt, nnode, fdto, subnode);
		if (ret)
			return ret;
	}

	return 0;
}