iio: adc: palmas: always reset events on unload

This prevents leaving the adc in freerunning mode when removing the
driver.

Signed-off-by: Patrik Dahlström <risca@dalakolonin.se>
Link: https://lore.kernel.org/r/20230408114825.824505-8-risca@dalakolonin.se
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/adc/palmas_gpadc.c b/drivers/iio/adc/palmas_gpadc.c
index 8c6ea4a..da49086 100644 (file)
--- a/drivers/iio/adc/palmas_gpadc.c
+++ b/drivers/iio/adc/palmas_gpadc.c
@@ -498,6 +498,13 @@ static int palmas_gpadc_get_adc_dt_data(struct platform_device *pdev,
        return 0;
 }
 
+static void palmas_gpadc_reset(void *data)
+{
+       struct palmas_gpadc *adc = data;
+       if (adc->event0.enabled || adc->event1.enabled)
+               palmas_adc_reset_events(adc);
+}
+
 static int palmas_gpadc_probe(struct platform_device *pdev)
 {
        struct palmas_gpadc *adc;
@@ -587,6 +594,10 @@ static int palmas_gpadc_probe(struct platform_device *pdev)
                        palmas_gpadc_calibrate(adc, i);
        }
 
+       ret = devm_add_action(&pdev->dev, palmas_gpadc_reset, adc);
+       if (ret)
+               return ret;
+
        return 0;
 }