Re: [PATCH 07/11] iio: potentiostat: lmp91000: Fix alignment of buffer in iio_push_to_buffers_with_timestamp()

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On Sat, May 1, 2021 at 10:15 AM Jonathan Cameron <jic23@xxxxxxxxxx> wrote:
>
> From: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
>
> Add __aligned(8) to ensure the buffer passed to
> iio_push_to_buffers_with_timestamp() is suitable for the naturally
> aligned timestamp that will be inserted.
>
> Here structure is not used, because this buffer is also used
> elsewhere in the driver.
>
> Fixes: 67e17300dc1d ("iio: potentiostat: add LMP91000 support")
> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>

Acked-by: Matt Ranostay <matt.ranostay@xxxxxxxxxxxx>

> Cc: Matt Ranostay <matt.ranostay@xxxxxxxxxxxx>
> ---
>  drivers/iio/potentiostat/lmp91000.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/iio/potentiostat/lmp91000.c b/drivers/iio/potentiostat/lmp91000.c
> index 8a9c576616ee..ff39ba975da7 100644
> --- a/drivers/iio/potentiostat/lmp91000.c
> +++ b/drivers/iio/potentiostat/lmp91000.c
> @@ -71,8 +71,8 @@ struct lmp91000_data {
>
>         struct completion completion;
>         u8 chan_select;
> -
> -       u32 buffer[4]; /* 64-bit data + 64-bit timestamp */
> +       /* 64-bit data + 64-bit naturally aligned timestamp */
> +       u32 buffer[4] __aligned(8);
>  };
>
>  static const struct iio_chan_spec lmp91000_channels[] = {
> --
> 2.31.1
>



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