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    Subject[PATCH 4.4 36/53] Input: twl6040-vibra - fix child-node lookup
    Date
    4.4-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Johan Hovold <johan@kernel.org>

    commit dcaf12a8b0bbdbfcfa2be8dff2c4948d9844b4ad upstream.

    Fix child-node lookup during probe, which ended up searching the whole
    device tree depth-first starting at parent rather than just matching on
    its children.

    Later sanity checks on node properties (which would likely be missing)
    should prevent this from causing much trouble however, especially as the
    original premature free of the parent node has already been fixed
    separately (but that "fix" was apparently never backported to stable).

    Fixes: e7ec014a47e4 ("Input: twl6040-vibra - update for device tree support")
    Fixes: c52c545ead97 ("Input: twl6040-vibra - fix DT node memory management")
    Signed-off-by: Johan Hovold <johan@kernel.org>
    Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
    Tested-by: H. Nikolaus Schaller <hns@goldelico.com> (on Pyra OMAP5 hardware)
    Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    drivers/input/misc/twl6040-vibra.c | 3 +--
    1 file changed, 1 insertion(+), 2 deletions(-)

    --- a/drivers/input/misc/twl6040-vibra.c
    +++ b/drivers/input/misc/twl6040-vibra.c
    @@ -262,8 +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,
    + twl6040_core_node = of_get_child_by_name(twl6040_core_dev->of_node,
    "vibra");
    if (!twl6040_core_node) {
    dev_err(&pdev->dev, "parent of node is missing?\n");

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