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| author | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-05-08 18:55:55 +0100 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-06-14 11:53:12 +0100 |
| commit | 009ae227a1dace2d4d27c804e5bd65907e1d0557 (patch) | |
| tree | 5b653f34cb945b1fa3e5148805c6ce277a5e17f6 /drivers/iio/adc/ad7768-1.c | |
| parent | 6268c6eebb13f228d418f9adaca848b3ed5b3cf9 (diff) | |
iio: adc: ad7766: 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.
Update the comment to reflect the fact DMA safety 'may' require
separate cachelines.
Fixes: aa16c6bd0e09 ("iio:adc: Add support for AD7766/AD7767")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220508175712.647246-16-jic23@kernel.org
Diffstat (limited to 'drivers/iio/adc/ad7768-1.c')
0 files changed, 0 insertions, 0 deletions