diff --git a/drivers/iio/adc/ti-adc161s626.c b/drivers/iio/adc/ti-adc161s626.c
index 42968d96572b..be1cc2e77862 100644
--- a/drivers/iio/adc/ti-adc161s626.c
+++ b/drivers/iio/adc/ti-adc161s626.c
@@ -15,6 +15,7 @@
 #include <linux/init.h>
 #include <linux/err.h>
 #include <linux/spi/spi.h>
+#include <linux/unaligned.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/trigger.h>
 #include <linux/iio/buffer.h>
@@ -70,6 +71,7 @@ struct ti_adc_data {
 
 	u8 read_size;
 	u8 shift;
+	u8 buf[3] __aligned(IIO_DMA_MINALIGN);
 };
 
 static int ti_adc_read_measurement(struct ti_adc_data *data,
@@ -78,26 +80,20 @@ static int ti_adc_read_measurement(struct ti_adc_data *data,
 	int ret;
 
 	switch (data->read_size) {
-	case 2: {
-		__be16 buf;
-
-		ret = spi_read(data->spi, (void *) &buf, 2);
+	case 2:
+		ret = spi_read(data->spi, data->buf, 2);
 		if (ret)
 			return ret;
 
-		*val = be16_to_cpu(buf);
+		*val = get_unaligned_be16(data->buf);
 		break;
-	}
-	case 3: {
-		__be32 buf;
-
-		ret = spi_read(data->spi, (void *) &buf, 3);
+	case 3:
+		ret = spi_read(data->spi, data->buf, 3);
 		if (ret)
 			return ret;
 
-		*val = be32_to_cpu(buf) >> 8;
+		*val = get_unaligned_be24(data->buf);
 		break;
-	}
 	default:
 		return -EINVAL;
 	}