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| author | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-05-08 20:56:35 +0300 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-06-14 13:53:16 +0300 |
| commit | b2d5e9de77c8774a5a6cff59d928f2fa38cbc642 (patch) | |
| tree | b885cee2c0898a67d10a6652ca69c4a03ef51a11 /drivers/iio | |
| parent | 27f2261d16d01858b8e5baca5a1a515b040429c4 (diff) | |
| download | linux-b2d5e9de77c8774a5a6cff59d928f2fa38cbc642.tar.xz | |
iio: dac: ad5791: Fix alignment for DMA saftey
____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: 791bb52a0cd2 ("iio:ad5791: Do not store transfer buffers on the stack")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220508175712.647246-56-jic23@kernel.org
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/dac/ad5791.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iio/dac/ad5791.c b/drivers/iio/dac/ad5791.c index 339564fe47d1..a4167454da81 100644 --- a/drivers/iio/dac/ad5791.c +++ b/drivers/iio/dac/ad5791.c @@ -95,7 +95,7 @@ struct ad5791_state { union { __be32 d32; u8 d8[4]; - } data[3] ____cacheline_aligned; + } data[3] __aligned(IIO_DMA_MINALIGN); }; enum ad5791_supported_device_ids { |