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| author | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-05-08 19:56:18 +0200 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-06-14 12:53:15 +0200 |
| commit | a2105d87eb8eb03591515df10102e04a1c9e0e46 (patch) | |
| tree | 44abeac3c30c9538c8e7a8373234ba82cd90ffe9 /drivers/iio/adc/ti-ads8688.c | |
| parent | iio: adc: ti-ads8344: Fix alignment for DMA safety (diff) | |
| download | linux-a2105d87eb8eb03591515df10102e04a1c9e0e46.tar.xz linux-a2105d87eb8eb03591515df10102e04a1c9e0e46.zip | |
iio: adc: ti-ads8688: 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: 3e87e7838328 ("iio: adc: Add TI ADS8688")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220508175712.647246-39-jic23@kernel.org
Diffstat (limited to 'drivers/iio/adc/ti-ads8688.c')
| -rw-r--r-- | drivers/iio/adc/ti-ads8688.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iio/adc/ti-ads8688.c b/drivers/iio/adc/ti-ads8688.c index 708cca0a63be..ef06a897421a 100644 --- a/drivers/iio/adc/ti-ads8688.c +++ b/drivers/iio/adc/ti-ads8688.c @@ -71,7 +71,7 @@ struct ads8688_state { union { __be32 d32; u8 d8[4]; - } data[2] ____cacheline_aligned; + } data[2] __aligned(IIO_DMA_MINALIGN); }; enum ads8688_id { |