iio: hudmidity: hdc100x: fix incorrect shifting and scaling

Shifting sensor data to the right 2 bits was incorrect and caused the
scaling values + offsets to be invalid.

Reported-by: Alison Schofield <amsfield22@gmail.com>
Signed-off-by: Matt Ranostay <mranostay@gmail.com>
Tested-by: Alison Schofield <amsfield22@gmail.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

1 files changed, 8 insertions, 8 deletions

diff --git a/drivers/iio/humidity/hdc100x.c b/drivers/iio/humidity/hdc100x.c
index 30709838dcdc..a03832a5fc95 100644
--- a/drivers/iio/humidity/hdc100x.c
+++ b/drivers/iio/humidity/hdc100x.c
@@ -164,14 +164,14 @@ static int hdc100x_get_measurement(struct hdc100x_data *data,
                 dev_err(&client->dev, "cannot read high byte measurement");
                 return ret;
         }
-        val = ret << 6;
+        val = ret << 8;
 
         ret = i2c_smbus_read_byte(client);
         if (ret < 0) {
                 dev_err(&client->dev, "cannot read low byte measurement");
                 return ret;
         }
-        val |= ret >> 2;
+        val |= ret;
 
         return val;
 }
@@ -212,17 +212,17 @@ static int hdc100x_read_raw(struct iio_dev *indio_dev,
         case IIO_CHAN_INFO_SCALE:
                 if (chan->type == IIO_TEMP) {
                         *val = 165000;
-                        *val2 = 65536 >> 2;
+                        *val2 = 65536;
                         return IIO_VAL_FRACTIONAL;
                 } else {
-                        *val = 0;
-                        *val2 = 10000;
-                        return IIO_VAL_INT_PLUS_MICRO;
+                        *val = 100;
+                        *val2 = 65536;
+                        return IIO_VAL_FRACTIONAL;
                 }
                 break;
         case IIO_CHAN_INFO_OFFSET:
-                *val = -3971;
-                *val2 = 879096;
+                *val = -15887;
+                *val2 = 515151;
                 return IIO_VAL_INT_PLUS_MICRO;
         default:
                 return -EINVAL;