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    Subject[PATCH v2 4/5] mfd: rn5t618: register power off callback optionally
    Date
    Only register power off if the PMIC is defined as system power
    controller (see Documentation/devicetree/bindings/power/
    power-controller.txt).

    Reviewed-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
    Signed-off-by: Stefan Agner <stefan@agner.ch>
    ---
    drivers/mfd/rn5t618.c | 10 +++++++---
    1 file changed, 7 insertions(+), 3 deletions(-)

    diff --git a/drivers/mfd/rn5t618.c b/drivers/mfd/rn5t618.c
    index 7607ced..d9b4d40 100644
    --- a/drivers/mfd/rn5t618.c
    +++ b/drivers/mfd/rn5t618.c
    @@ -103,9 +103,13 @@ static int rn5t618_i2c_probe(struct i2c_client *i2c,
    return ret;
    }

    - if (!pm_power_off) {
    - rn5t618_pm_power_off = priv;
    - pm_power_off = rn5t618_power_off;
    + if (of_device_is_system_power_controller(i2c->dev.of_node)) {
    + if (!pm_power_off) {
    + rn5t618_pm_power_off = priv;
    + pm_power_off = rn5t618_power_off;
    + } else {
    + dev_err(&i2c->dev, "Failed to set poweroff capability, already defined\n");
    + }
    }

    return 0;
    --
    2.8.3
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