This is a note to let you know that I've just added the patch titled
powerpc/pseries: dynamically added OF nodes need to call of_node_init
to the 3.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
powerpc-pseries-dynamically-added-of-nodes-need-to-call-of_node_init.patch
and it can be found in the queue-3.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 97a9a7179aad701ab676e6f29eb90766a1acfde2 Mon Sep 17 00:00:00 2001
From: Tyrel Datwyler <[email protected]>
Date: Thu, 10 Jul 2014 14:50:57 -0400
Subject: powerpc/pseries: dynamically added OF nodes need to call of_node_init
From: Tyrel Datwyler <[email protected]>
commit 97a9a7179aad701ab676e6f29eb90766a1acfde2 upstream.
Commit 75b57ecf9 refactored device tree nodes to use kobjects such that they
can be exposed via /sysfs. A secondary commit 0829f6d1f furthered this rework
by moving the kobect initialization logic out of of_node_add into its own
of_node_init function. The inital commit removed the existing kref_init calls
in the pseries dlpar code with the assumption kobject initialization would
occur in of_node_add. The second commit had the side effect of triggering a
BUG_ON during DLPAR, migration and suspend/resume operations as a result of
dynamically added nodes being uninitialized.
This patch fixes this by adding of_node_init calls in place of the previously
removed kref_init calls.
Fixes: 0829f6d1f69e ("of: device_node kobject lifecycle fixes")
Signed-off-by: Tyrel Datwyler <[email protected]>
Acked-by: Nathan Fontenot <[email protected]>
Acked-by: Grant Likely <[email protected]>
Signed-off-by: Benjamin Herrenschmidt <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
arch/powerpc/platforms/pseries/dlpar.c | 1 +
arch/powerpc/platforms/pseries/reconfig.c | 1 +
2 files changed, 2 insertions(+)
--- a/arch/powerpc/platforms/pseries/dlpar.c
+++ b/arch/powerpc/platforms/pseries/dlpar.c
@@ -86,6 +86,7 @@ static struct device_node *dlpar_parse_c
}
of_node_set_flag(dn, OF_DYNAMIC);
+ of_node_init(dn);
return dn;
}
--- a/arch/powerpc/platforms/pseries/reconfig.c
+++ b/arch/powerpc/platforms/pseries/reconfig.c
@@ -69,6 +69,7 @@ static int pSeries_reconfig_add_node(con
np->properties = proplist;
of_node_set_flag(np, OF_DYNAMIC);
+ of_node_init(np);
np->parent = derive_parent(path);
if (IS_ERR(np->parent)) {
Patches currently in stable-queue which might be from [email protected]
are
queue-3.15/powerpc-pseries-dynamically-added-of-nodes-need-to-call-of_node_init.patch
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