From: "H. Nikolaus Schaller" hns@goldelico.com
This patch has been added to the 4.1 stable tree. If you have any objections, please let us know.
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[ Upstream commit c52c545ead97fcc2f4f8ea38f1ae3c23211e09a8 ]
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: Sasha Levin alexander.levin@microsoft.com --- drivers/input/misc/twl6040-vibra.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/input/misc/twl6040-vibra.c b/drivers/input/misc/twl6040-vibra.c index 0e0d094df2e6..93e216a17008 100644 --- a/drivers/input/misc/twl6040-vibra.c +++ b/drivers/input/misc/twl6040-vibra.c @@ -262,6 +262,7 @@ static int twl6040_vibra_probe(struct platform_device *pdev) 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) {