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

Message ID bbf3bcc5-a23c-4f2d-a6be-a349fea93252@rwthex-w2-a.rwth-ad.de
State New
Headers show

Commit Message

Stefan Brüns Dec. 8, 2017, 5:41 p.m. UTC
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 Brüns <stefan.bruens@rwth-aachen.de>
---

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

Comments

Jonathan Cameron Dec. 17, 2017, 9:44 a.m. UTC | #1
On Fri, 8 Dec 2017 18:41:47 +0100
Stefan Brüns <stefan.bruens@rwth-aachen.de> wrote:

> 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 Brüns <stefan.bruens@rwth-aachen.de>
Applied and pushed out as testing for the autobuilders to play with it.
Thanks,

Jonathan
> ---
> 
>  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;

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Patch
diff mbox

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;