linux/drivers/of
Michael Ellerman f4eb010706 [POWERPC] Add of_get_next_parent()
Iterating through a device node's parents is simple enough, but dealing
with the refcounts properly is a little ugly, and replicating that logic
is asking for someone to get it wrong or forget it all together, eg:

while (dn != NULL) {
	/* loop body */
	tmp = of_get_parent(dn);
	of_node_put(dn);
	dn = tmp;
}

So add of_get_next_parent(), inspired by of_get_next_child().  The
contract is that it returns the parent and drops the reference on the
current node, this makes the loop look like:

while (dn != NULL) {
	/* loop body */
	dn = of_get_next_parent(dn);
}

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-06 16:29:59 +11:00
..
base.c [POWERPC] Add of_get_next_parent() 2008-02-06 16:29:59 +11:00
device.c [POWERPC] Add of_find_matching_node() helper function 2008-01-17 14:53:22 +11:00
Kconfig Begin to consolidate of_device.c 2007-07-20 13:39:59 +10:00
Makefile Create drivers/of/platform.c 2007-07-20 14:25:51 +10:00
platform.c [SPARC/64]: Consolidate of_register_driver 2007-10-17 21:17:42 -07:00