--- zzzz-none-000/linux-3.10.107/drivers/iio/common/st_sensors/st_sensors_spi.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/iio/common/st_sensors/st_sensors_spi.c	2021-02-04 17:41:59.000000000 +0000
@@ -54,7 +54,7 @@
 	if (err)
 		goto acc_spi_read_error;
 
-	memcpy(data, tb->rx_buf, len*sizeof(u8));
+	memcpy(data, tb->rx_buf, len);
 	mutex_unlock(&tb->buf_lock);
 	return len;
 
@@ -111,6 +111,7 @@
 	indio_dev->dev.parent = &spi->dev;
 	indio_dev->name = spi->modalias;
 
+	sdata->dev = &spi->dev;
 	sdata->tf = &st_sensors_tf_spi;
 	sdata->get_irq_data_ready = st_sensors_spi_get_irq;
 }