On Sun, Aug 7, 2022 at 5:26 PM Jonathan Cameron <jic23@xxxxxxxxxx> wrote:
>
> From: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
>
> ____cacheline_aligned is an insufficient guarantee for non-coherent DMA
> on platforms with 128 byte cachelines above L1. Switch to the updated
> IIO_DMA_MINALIGN definition.
...
> union {
> - __be16 freq_data[4]____cacheline_aligned;
> + __be16 freq_data[4] __aligned(IIO_DMA_MINALIGN);
> __be16 phase_data[2];
> __be16 data;
> };
Hmm... Can we rather mark the entire union with it?
--
With Best Regards,
Andy Shevchenko
