This is a note to let you know that I've just added the patch titled
Input: twl6040-vibra - fix DT node memory management
to the 3.18-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:
input-twl6040-vibra-fix-dt-node-memory-management.patch
and it can be found in the queue-3.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From c52c545ead97fcc2f4f8ea38f1ae3c23211e09a8 Mon Sep 17 00:00:00 2001
From: "H. Nikolaus Schaller" <hns@xxxxxxxxxxxxx>
Date: Mon, 9 May 2016 17:01:01 -0700
Subject: Input: twl6040-vibra - fix DT node memory management
From: H. Nikolaus Schaller <hns@xxxxxxxxxxxxx>
commit c52c545ead97fcc2f4f8ea38f1ae3c23211e09a8 upstream.
commit e7ec014a47e4 ("Input: twl6040-vibra - update for device tree support")
made the separate vibra DT node to a subnode of the twl6040.
It now calls of_find_node_by_name() to locate the "vibra" subnode.
This function has a side effect to call of_node_put on() for the twl6040
parent node passed in as a parameter. This causes trouble later on.
Solution: we must call of_node_get() before of_find_node_by_name()
Signed-off-by: H. Nikolaus Schaller <hns@xxxxxxxxxxxxx>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/input/misc/twl6040-vibra.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/input/misc/twl6040-vibra.c
+++ b/drivers/input/misc/twl6040-vibra.c
@@ -264,6 +264,7 @@ static int twl6040_vibra_probe(struct pl
int vddvibr_uV = 0;
int error;
+ of_node_get(twl6040_core_dev->of_node);
twl6040_core_node = of_find_node_by_name(twl6040_core_dev->of_node,
"vibra");
if (!twl6040_core_node) {
Patches currently in stable-queue which might be from hns@xxxxxxxxxxxxx are
queue-3.18/input-twl6040-vibra-fix-child-node-lookup.patch
queue-3.18/input-twl6040-vibra-fix-dt-node-memory-management.patch