iio: light: tcs3472: Use iio_push_to_buffers_with_ts() to allow source size runtime check

Use iio_push_to_buffers_with_ts() to allow source size runtime check.

Also move the structure used as the source to the stack as it is only 16
bytes and not the target of an DMA or similar.

Reviewed-by: Andy Shevchenko <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Jonathan Cameron <[e-mail]>

drivers/iio/light/tcs3472.c

···
 	u8 control;
 	u8 atime;
 	u8 apers;
-	/* Ensure timestamp is naturally aligned */
-	struct {
-		u16 chans[4];
-		aligned_s64 timestamp;
-	} scan;
 };
 
 static const struct iio_event_spec tcs3472_events[] = {
···
 	struct iio_dev *indio_dev = pf->indio_dev;
 	struct tcs3472_data *data = iio_priv(indio_dev);
 	int i, j = 0;
+	/* Ensure timestamp is naturally aligned */
+	struct {
+		u16 chans[4];
+		aligned_s64 timestamp;
+	} scan = { };
 
 	int ret = tcs3472_req_data(data);
 	if (ret < 0)
···
 		if (ret < 0)
 			goto done;
 
-		data->scan.chans[j++] = ret;
+		scan.chans[j++] = ret;
 	}
 
-	iio_push_to_buffers_with_timestamp(indio_dev, &data->scan,
+	iio_push_to_buffers_with_ts(indio_dev, &scan, sizeof(scan),
 		iio_get_time_ns(indio_dev));
 
 done: