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-rw-r--r--drivers/iio/adc/max1363.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/iio/adc/max1363.c b/drivers/iio/adc/max1363.c
index 77c123fcd0d0..46732380566f 100644
--- a/drivers/iio/adc/max1363.c
+++ b/drivers/iio/adc/max1363.c
@@ -335,7 +335,7 @@ static int max1363_read_single_chan(struct iio_dev *indio_dev,
{
int ret = 0;
s32 data;
- char rxbuf[2];
+ u8 rxbuf[2];
struct max1363_state *st = iio_priv(indio_dev);
struct i2c_client *client = st->client;
@@ -367,7 +367,8 @@ static int max1363_read_single_chan(struct iio_dev *indio_dev,
ret = data;
goto error_ret;
}
- data = (s32)(rxbuf[1]) | ((s32)(rxbuf[0] & 0x0F)) << 8;
+ data = (rxbuf[1] | rxbuf[0] << 8) &
+ ((1 << st->chip_info->bits) - 1);
} else {
/* Get reading */
data = i2c_master_recv(client, rxbuf, 1);