On Sun, Apr 14, 2024 at 8:57 PM Aren Moynihan <aren@xxxxxxxxxxxxxxxxx> wrote:
>
> From: Ondrej Jirman <megi@xxxxxx>
>
> VDD power input can be used to completely power off the chip during
> system suspend. Do so if available.
...
> #include <linux/iio/events.h>
> #include <linux/iio/iio.h>
> #include <linux/iio/sysfs.h>
> +#include <linux/regulator/consumer.h>
Move it to be ordered and add a blank line to separate iio/*.h group.
...
> + data->vdd_reg = devm_regulator_get_optional(&client->dev, "vdd");
> + if (IS_ERR(data->vdd_reg)) {
> + ret = PTR_ERR(data->vdd_reg);
> + if (ret == -ENODEV)
> + data->vdd_reg = NULL;
> + else
Redundant 'else' when you follow the pattern "check for error condition first".
> + return dev_err_probe(&client->dev, ret,
> + "get regulator vdd failed\n");
> + }
...
> + if (data->vdd_reg) {
> + ret = regulator_enable(data->vdd_reg);
> + if (ret)
> + return dev_err_probe(&client->dev, ret,
> + "regulator vdd enable failed\n");
> +
> + usleep_range(1000, 2000);
fsleep()
> + }
...
> stk3310_set_state(iio_priv(indio_dev), STK3310_STATE_STANDBY);
> + if (data->vdd_reg)
> + regulator_disable(data->vdd_reg);
I forgot to check the order of freeing resources, be sure you have no
devm_*() releases happening before this call.
...
> + usleep_range(1000, 2000);
fsleep()
--
With Best Regards,
Andy Shevchenko
