Re: [PATCH 2.6.21-rc1] ehea: dynamic add / remove port

Second, the probe and remove functions do not communicate whether an add
or remove was successful.  Combine this with the lack of port
information in the adapter sysfs directory, and the userspace tool has
no way of verifying a dynamic add/remove.

One way to communicate a return code is by making the sysfs interface
file read/write, and having the read callback give a return code.  For
an example of this, you can look at drivers/pci/rpadlpar_sysfs.c and
rpadlpar_core.c.

It would still be nice to have some way from the adapter sysfs directory
to list/examine logical ports.  Symlinks would work, but it would be
even nicer to have a new kobject per port with attribute files for
logical id, state, etc.