4.5-stable review patch. If anyone has any objections, please let me know. ------------------ From: Irina Tirdea <irina.tirdea@xxxxxxxxx> commit 95e7ff034175db7d8aefabe7716c4d42bea24fde upstream. For big endian platforms, reading the axes will return invalid values. The device stores each axis value in a 16 bit little endian register. The driver uses regmap_read_bulk to get the axis value, resulting in a 16 bit little endian value. This needs to be converted to cpu endianness to work on big endian platforms. Fix endianness for big endian platforms by converting the values for the axes read from little endian to cpu. This is also partially fixed in commit 82d8e5da1a33 ("iio: accel: bmg160: optimize transfers in trigger handler"). Signed-off-by: Irina Tirdea <irina.tirdea@xxxxxxxxx> Signed-off-by: Jonathan Cameron <jic23@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/iio/gyro/bmg160_core.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) --- a/drivers/iio/gyro/bmg160_core.c +++ b/drivers/iio/gyro/bmg160_core.c @@ -452,7 +452,7 @@ static int bmg160_get_temp(struct bmg160 static int bmg160_get_axis(struct bmg160_data *data, int axis, int *val) { int ret; - unsigned int raw_val; + __le16 raw_val; mutex_lock(&data->mutex); ret = bmg160_set_power_state(data, true); @@ -462,7 +462,7 @@ static int bmg160_get_axis(struct bmg160 } ret = regmap_bulk_read(data->regmap, BMG160_AXIS_TO_REG(axis), &raw_val, - 2); + sizeof(raw_val)); if (ret < 0) { dev_err(data->dev, "Error reading axis %d\n", axis); bmg160_set_power_state(data, false); @@ -470,7 +470,7 @@ static int bmg160_get_axis(struct bmg160 return ret; } - *val = sign_extend32(raw_val, 15); + *val = sign_extend32(le16_to_cpu(raw_val), 15); ret = bmg160_set_power_state(data, false); mutex_unlock(&data->mutex); if (ret < 0) @@ -733,6 +733,7 @@ static const struct iio_event_spec bmg16 .sign = 's', \ .realbits = 16, \ .storagebits = 16, \ + .endianness = IIO_LE, \ }, \ .event_spec = &bmg160_event, \ .num_event_specs = 1 \ -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html