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 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: input-twl6040-vibra-fix-dt-node-memory-management.patch and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From c52c545ead97fcc2f4f8ea38f1ae3c23211e09a8 Mon Sep 17 00:00:00 2001
From: "H. Nikolaus Schaller" hns@goldelico.com Date: Mon, 9 May 2016 17:01:01 -0700 Subject: Input: twl6040-vibra - fix DT node memory management
From: H. Nikolaus Schaller hns@goldelico.com
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@goldelico.com Signed-off-by: Dmitry Torokhov dmitry.torokhov@gmail.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- 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 @@ -262,6 +262,7 @@ 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@goldelico.com are
queue-4.4/input-twl6040-vibra-fix-child-node-lookup.patch queue-4.4/input-twl6040-vibra-fix-dt-node-memory-management.patch