[PATCH v3 2/4] iio: light: opt4001: Fix incompatible pointer type passed to div_u64_rem()

[Nikhil Gautam <nikhilgtr@gmail.com>]

div_u64_rem() takes a u32 * for the remainder but is passed val2, which
is an int *. There is no functional impact as int and u32 have the same
size and representation on all supported architectures and the remainder
is always smaller than the divisor, so it fits in the positive range of
int. Fix the type mismatch by using a local u32 for the remainder and
assigning the result to *val2.

Fixes: 9a9608418292 ("iio: light: Add support for TI OPT4001 light sensor")
Signed-off-by: Nikhil Gautam <nikhilgtr@gmail.com>
---
 drivers/iio/light/opt4001.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/iio/light/opt4001.c b/drivers/iio/light/opt4001.c
index 66563000d081..a0f174888384 100644
--- a/drivers/iio/light/opt4001.c
+++ b/drivers/iio/light/opt4001.c
@@ -173,6 +173,7 @@ static int opt4001_read_lux_value(struct iio_dev *indio_dev,
 	u8 crc;
 	u8 calc_crc;
 	u64 lux_raw;
+	u32 rem;
 	int ret;
 
 	ret = regmap_read(chip->regmap, OPT4001_LIGHT1_MSB, &light1);
@@ -199,8 +200,8 @@ static int opt4001_read_lux_value(struct iio_dev *indio_dev,
 
 	lux_raw = lux_raw << exp;
 	lux_raw = lux_raw * chip->chip_info->mul;
-	*val = div_u64_rem(lux_raw, chip->chip_info->div, val2);
-	*val2 = *val2 * 100;
+	*val = div_u64_rem(lux_raw, chip->chip_info->div, &rem);
+	*val2 = rem * 100;
 
 	return IIO_VAL_INT_PLUS_NANO;
 }
-- 
2.39.5