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| author | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-05-08 20:56:50 +0300 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-06-14 13:53:18 +0300 |
| commit | f890aaac771bd015c348eddb967b4027e88344c0 (patch) | |
| tree | c7dcbb907ebd75fddd6b08a0a09fb9719eb4243e /drivers/iio/frequency | |
| parent | a3e38a557a54df0edea791d7eb623515bb86e39a (diff) | |
| download | linux-f890aaac771bd015c348eddb967b4027e88344c0.tar.xz | |
iio: frequency: admv4420: 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: b59c04155901 ("iio: frequency: admv4420.c: Add support for ADMV4420")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220508175712.647246-71-jic23@kernel.org
Diffstat (limited to 'drivers/iio/frequency')
| -rw-r--r-- | drivers/iio/frequency/admv4420.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iio/frequency/admv4420.c b/drivers/iio/frequency/admv4420.c index 51134aee8510..863ba8e98c95 100644 --- a/drivers/iio/frequency/admv4420.c +++ b/drivers/iio/frequency/admv4420.c @@ -113,7 +113,7 @@ struct admv4420_state { struct admv4420_n_counter n_counter; enum admv4420_mux_sel mux_sel; struct mutex lock; - u8 transf_buf[4] ____cacheline_aligned; + u8 transf_buf[4] __aligned(IIO_DMA_MINALIGN); }; static const struct regmap_config admv4420_regmap_config = { |