[PATCH v6 07/18] of: dynamic: change type of of_{at, de}tach_node() to void

[Michael Ellerman]

frowand.list at gmail.com writes:

> From: Frank Rowand <frank.rowand at sony.com>
>
> of_attach_node() and of_detach_node() always return zero, so
> their return value is meaningless.

But should they always return zero?

At least __of_attach_node_sysfs() can fail in several ways.

And there's also this in __of_detach_node() which should probably be
returning an error:

	if (WARN_ON(of_node_check_flag(np, OF_DETACHED)))
        	return;


Seems to me we should instead be fixing these to propagate errors,
rather than hiding them?

cheers