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SubjectRe: [PATCH v4 4/5] mfd: rn5t618: register power off callback optionally
On Mon, 27 Jun 2016, Stefan Agner wrote:

> Only register power off if the PMIC is defined as system power
> controller (see Documentation/devicetree/bindings/power/
> power-controller.txt).
>
> Signed-off-by: Stefan Agner <stefan@agner.ch>
> Reviewed-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
> ---
> drivers/mfd/rn5t618.c | 10 +++++++---
> 1 file changed, 7 insertions(+), 3 deletions(-)

For my own reference:
Acked-by: Lee Jones <lee.jones@linaro.org>

> diff --git a/drivers/mfd/rn5t618.c b/drivers/mfd/rn5t618.c
> index c86160d..1831740 100644
> --- a/drivers/mfd/rn5t618.c
> +++ b/drivers/mfd/rn5t618.c
> @@ -102,9 +102,13 @@ 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_warn(&i2c->dev, "Poweroff callback already assigned\n");
> + }
> }
>
> return 0;

--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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