[PATCH v1 2/7] iio: adc: ina2xx: Clarify size requirement for data buffer

[Stefan BrÃns]

The timestamp is inserted into the buffer after the sample data by
iio_push_to_buffers_with_timestamp, document the space requirement for
the timestamp.

Signed-off-by: Stefan BrÃns <stefan.bruens@xxxxxxxxxxxxxx>
---

 drivers/iio/adc/ina2xx-adc.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/iio/adc/ina2xx-adc.c b/drivers/iio/adc/ina2xx-adc.c
index 3195f8754c3b..8c8120406f52 100644
--- a/drivers/iio/adc/ina2xx-adc.c
+++ b/drivers/iio/adc/ina2xx-adc.c
@@ -700,7 +700,8 @@ static const struct iio_chan_spec ina219_channels[] = {
 static int ina2xx_work_buffer(struct iio_dev *indio_dev)
 {
 	struct ina2xx_chip_info *chip = iio_priv(indio_dev);
-	unsigned short data[8];
+	/* data buffer needs space for channel data and timestap */
+	unsigned short data[4 + sizeof(s64)/sizeof(short)];
 	int bit, ret, i = 0;
 	s64 time_a, time_b;
 	unsigned int alert;
-- 
2.15.1