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iio: dac: ad5686: Fix alignment for DMA safety
authorJonathan Cameron <Jonathan.Cameron@huawei.com>
Sun, 8 May 2022 17:56:29 +0000 (18:56 +0100)
committerJonathan Cameron <Jonathan.Cameron@huawei.com>
Tue, 14 Jun 2022 10:53:16 +0000 (11:53 +0100)
commit444e38927d9af093de7cdc6afbb7afdc3485da2d
tree2c6d970b13c6ba819d68a840e4704874a6cd2370tree | snapshot
parent4a4a79c06caeec47003bcbee1cf3094479f26e24commit | diff
iio: dac: ad5686: 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 include 'may'.

Fixes: 0357e488b825 ("iio:dac:ad5686: Refactor the driver")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220508175712.647246-50-jic23@kernel.org
drivers/iio/dac/ad5686.h diff | blob | history
Domain: System / Kernel;