[PATCH] iio: adc: twl4030-madc: read MADC_CTRL1 from the correct module

[Giorgi Tchankvetadze]

From: Giorgi Tchankvetadze <giorgi@xxxxxxxxxxxxxxxxx>

twl4030_madc_set_power() does a read-modify-write on MADC_CTRL1 but
reads it from TWL_MODULE_MAIN_CHARGE while writing it back to
TWL4030_MODULE_MADC.

Fix it by reading MADC_CTRL1 from TWL4030_MODULE_MADC
so the read-modify-write operates on the register's actual
contents.

Fixes: f99c1d4f94f9 ("mfd: Add twl4030 madc driver")
Signed-off-by: Giorgi Tchankvetadze <giorgi@xxxxxxxxxxxxxxxxx>
---
 drivers/iio/adc/twl4030-madc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iio/adc/twl4030-madc.c b/drivers/iio/adc/twl4030-madc.c
index 0ee7e16b5e24..1156e68ebd91 100644
--- a/drivers/iio/adc/twl4030-madc.c
+++ b/drivers/iio/adc/twl4030-madc.c
@@ -718,7 +718,7 @@ static int twl4030_madc_set_power(struct twl4030_madc_data *madc, int on)
 	u8 regval;
 	int ret;
 
-	ret = twl_i2c_read_u8(TWL_MODULE_MAIN_CHARGE,
+	ret = twl_i2c_read_u8(TWL4030_MODULE_MADC,
 			      &regval, TWL4030_MADC_CTRL1);
 	if (ret) {
 		dev_err(madc->dev, "unable to read madc ctrl1 reg 0x%X\n",
-- 
2.52.0