of: device_node kobject lifecycle fixes
authorPantelis Antoniou <panto@antoniou-consulting.com>
Fri, 13 Dec 2013 18:08:59 +0000 (20:08 +0200)
committerGrant Likely <grant.likely@linaro.org>
Wed, 19 Mar 2014 14:58:40 +0000 (14:58 +0000)
commit0829f6d1f69e4f2fae4062987ae6531a9af1a2e3
tree4081a4bee4a9e193b4de690735b5a3782d100eac
parent8357041a69b368991d1b04d9f1d297f8d71e1314
of: device_node kobject lifecycle fixes

After the move to having device nodes be proper kobjects the lifecycle
of the node needs to be controlled better.

At first convert of_add_node() in the unflattened functions to
of_init_node() which initializes the kobject so that of_node_get/put
work correctly even before of_init is called.

Afterwards introduce of_node_is_initialized & of_node_is_attached that
query the underlying kobject about the state (attached means kobj
is visible in sysfs)

Using that make sure the lifecycle of the tree is correct at all
times.

Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com>
[grant.likely: moved of_node_init() calls, fixed up locking, and
               dropped __of_populate() hunks]
Signed-off-by: Grant Likely <grant.likely@linaro.org>
drivers/of/base.c
drivers/of/fdt.c
drivers/of/pdt.c
include/linux/of.h