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| author | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-05-08 19:56:27 +0200 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-06-14 12:53:16 +0200 |
| commit | 00b9737caa5aaed5cf45a7c7498edf5957efa3b2 (patch) | |
| tree | 2fdaa13677babe561881a1ae7a88c29fe5078b02 /drivers/iio/dac | |
| parent | iio: dac: ad5449: Fix alignment for DMA safety (diff) | |
| download | linux-00b9737caa5aaed5cf45a7c7498edf5957efa3b2.tar.xz linux-00b9737caa5aaed5cf45a7c7498edf5957efa3b2.zip | |
iio: dac: ad5504: 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: 0dbe59c7a788 ("iio:ad5504: Do not store transfer buffers on the stack")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220508175712.647246-48-jic23@kernel.org
Diffstat (limited to 'drivers/iio/dac')
| -rw-r--r-- | drivers/iio/dac/ad5504.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iio/dac/ad5504.c b/drivers/iio/dac/ad5504.c index a0817e799cc0..e6c5be728bb2 100644 --- a/drivers/iio/dac/ad5504.c +++ b/drivers/iio/dac/ad5504.c @@ -54,7 +54,7 @@ struct ad5504_state { unsigned pwr_down_mask; unsigned pwr_down_mode; - __be16 data[2] ____cacheline_aligned; + __be16 data[2] __aligned(IIO_DMA_MINALIGN); }; /* |