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iio: adc: max1118: Fix alignment for DMA safety

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____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: a9e9c7153e ("iio: adc: add max1117/max1118/max1119 ADC driver")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220508175712.647246-26-jic23@kernel.org
This commit is contained in:
Jonathan Cameron 2022-05-08 18:56:05 +01:00
parent 51f30d6314
commit f746ab0bac
1 changed files with 1 additions and 1 deletions
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drivers/iio/adc/max1118.c
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@ -42,7 +42,7 @@ struct max1118 {
s64 ts __aligned(8);
} scan;
u8 data ____cacheline_aligned;
u8 data __aligned(IIO_DMA_MINALIGN);
};
#define MAX1118_CHANNEL(ch) \