4.9-stable review patch. If anyone has any objections, please let me know.
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From: Johan Hovold johan@kernel.org
commit 5b189201993ab03001a398de731045bfea90c689 upstream.
A helper purported to look up a child node based on its name was using the wrong of-helper and ended up prematurely freeing the parent of-node while searching the whole device tree depth-first starting at the parent node.
Fixes: 64b9e4d803b1 ("input: twl4030-vibra: Support for DT booted kernel") Fixes: e661d0a04462 ("Input: twl4030-vibra - fix ERROR: Bad of_node_put() warning") Signed-off-by: Johan Hovold johan@kernel.org Signed-off-by: Dmitry Torokhov dmitry.torokhov@gmail.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/input/misc/twl4030-vibra.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
--- a/drivers/input/misc/twl4030-vibra.c +++ b/drivers/input/misc/twl4030-vibra.c @@ -178,12 +178,14 @@ static SIMPLE_DEV_PM_OPS(twl4030_vibra_p twl4030_vibra_suspend, twl4030_vibra_resume);
static bool twl4030_vibra_check_coexist(struct twl4030_vibra_data *pdata, - struct device_node *node) + struct device_node *parent) { + struct device_node *node; + if (pdata && pdata->coexist) return true;
- node = of_find_node_by_name(node, "codec"); + node = of_get_child_by_name(parent, "codec"); if (node) { of_node_put(node); return true;