[PATCH 5.1 28/85] iio: dac: ds4422/ds4424 fix chip verification

From: Greg Kroah-Hartman
Date: Fri Jun 07 2019 - 11:56:22 EST


From: Ruslan Babayev <ruslan@xxxxxxxxxxx>

commit 60f2208699ec08ff9fdf1f97639a661a92a18f1c upstream.

The ds4424_get_value function takes channel number as it's 3rd
argument and translates it internally into I2C address using
DS4424_DAC_ADDR macro. The caller ds4424_verify_chip was passing an
already translated I2C address as its last argument.

Signed-off-by: Ruslan Babayev <ruslan@xxxxxxxxxxx>
Cc: xe-linux-external@xxxxxxxxx
Cc: <Stable@xxxxxxxxxxxxxxx>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
drivers/iio/dac/ds4424.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/iio/dac/ds4424.c
+++ b/drivers/iio/dac/ds4424.c
@@ -166,7 +166,7 @@ static int ds4424_verify_chip(struct iio
{
int ret, val;

- ret = ds4424_get_value(indio_dev, &val, DS4424_DAC_ADDR(0));
+ ret = ds4424_get_value(indio_dev, &val, 0);
if (ret < 0)
dev_err(&indio_dev->dev,
"%s failed. ret: %d\n", __func__, ret);