On Mon, 8 Aug 2022 11:18:34 +0200
Andy Shevchenko <andy.shevchenko@xxxxxxxxx> wrote:
> 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?
>
ah. I'd not even registered it was a union ;) Anyhow, yes, that would make
sense.
