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| author | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-05-08 19:57:06 +0200 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-06-14 12:53:19 +0200 |
| commit | 2386c0f8c5b740873a4b9126c3706601b127fe22 (patch) | |
| tree | 81a4f8415611b0f0dfa76da56d237eba86acb1e7 /drivers/iio/proximity/as3935.c | |
| parent | iio: pressure: dlhl60d: Drop unnecessary alignment forcing. (diff) | |
| download | linux-2386c0f8c5b740873a4b9126c3706601b127fe22.tar.xz linux-2386c0f8c5b740873a4b9126c3706601b127fe22.zip | |
iio: proximity: as3935: 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: 24ddb0e4bba4 ("iio: Add AS3935 lightning sensor support")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Matt Ranostay <mranostay@gmail.com>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220508175712.647246-87-jic23@kernel.org
Diffstat (limited to 'drivers/iio/proximity/as3935.c')
| -rw-r--r-- | drivers/iio/proximity/as3935.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iio/proximity/as3935.c b/drivers/iio/proximity/as3935.c index 67891ce2bd09..ebc95cf8f5f4 100644 --- a/drivers/iio/proximity/as3935.c +++ b/drivers/iio/proximity/as3935.c @@ -65,7 +65,7 @@ struct as3935_state { u8 chan; s64 timestamp __aligned(8); } scan; - u8 buf[2] ____cacheline_aligned; + u8 buf[2] __aligned(IIO_DMA_MINALIGN); }; static const struct iio_chan_spec as3935_channels[] = { |