iio: dac: mcp4922: Fix alignment for DMA safety

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[ Upstream commit e66bf04797 ]

____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: 1b791fadf3 ("iio: dac: mcp4902/mcp4912/mcp4922 dac driver")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Acked-by: Michael Welling <mwelling@ieee.org>
Link: https://lore.kernel.org/r/20220508175712.647246-61-jic23@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Jonathan Cameron 2022-05-08 18:56:40 +01:00 • committed by Greg Kroah-Hartman

parent 21cd3bb91b

commit 7aa18f077f

1 changed files with 1 additions and 1 deletions

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drivers/iio/dac/mcp4922.c

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