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powerpc+of: Add of node/property notification chain for adds and removes

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This patch moves the notification chain for updates to the device tree
from the powerpc/pseries code to the base OF code. This makes this
functionality available to all architectures.

Additionally the notification chain is updated to allow notifications
for property add/remove/update. To make this work a pointer to a new
struct (of_prop_reconfig) is passed to the routines in the notification chain.
The of_prop_reconfig property contains a pointer to the node containing the
property and a pointer to the property itself. In the case of property
updates, the property pointer refers to the new property.

Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Acked-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Nathan Fontenot
2012-10-02 16:57:57 +00:00
committed by Benjamin Herrenschmidt
parent f594972083
commit 1cf3d8b3d2
12 changed files with 163 additions and 154 deletions
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6
arch/powerpc/kernel/prom.c
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@@ -32,6 +32,7 @@
#include <linux/debugfs.h>
#include <linux/irq.h>
#include <linux/memblock.h>
#include <linux/of.h>
#include <asm/prom.h>
#include <asm/rtas.h>
@@ -49,7 +50,6 @@
#include <asm/btext.h>
#include <asm/sections.h>
#include <asm/machdep.h>
#include <asm/pSeries_reconfig.h>
#include <asm/pci-bridge.h>
#include <asm/kexec.h>
#include <asm/opal.h>
@@ -802,7 +802,7 @@ static int prom_reconfig_notifier(struct notifier_block *nb,
int err;
switch (action) {
case PSERIES_RECONFIG_ADD:
case OF_RECONFIG_ATTACH_NODE:
err = of_finish_dynamic_node(node);
if (err < 0)
printk(KERN_ERR "finish_node returned %d\n", err);
@@ -821,7 +821,7 @@ static struct notifier_block prom_reconfig_nb = {
static int __init prom_reconfig_setup(void)
{
return pSeries_reconfig_notifier_register(&prom_reconfig_nb);
return of_reconfig_notifier_register(&prom_reconfig_nb);
}
__initcall(prom_reconfig_setup);
#endif