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iio: adc: ad7292: Fix alignment for DMA safety 

____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.

Fixes: 506d2e317a ("iio: adc: Add driver support for AD7292")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Marcelo Schmitt <marcelo.schmitt1@gmail.com>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220508175712.647246-12-jic23@kernel.org
This commit is contained in:
Jonathan Cameron 2022-05-08 18:55:51 +01:00
parent 4e20084295
commit 98295a206d
1 changed files with 1 additions and 1 deletions
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2
drivers/iio/adc/ad7292.c
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@ -80,7 +80,7 @@ struct ad7292_state {
struct regulator *reg;
unsigned short vref_mv;
__be16 d16 ____cacheline_aligned;
__be16 d16 __aligned(IIO_DMA_MINALIGN);
u8 d8[2];
};