diff options
| author | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-05-08 18:55:51 +0100 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-06-14 11:53:12 +0100 |
| commit | 98295a206d04633bae31f279de11ff7d04724bce (patch) | |
| tree | 12b5e3b6b02ba8f027a3da2718e0f002f63f104e | |
| parent | 4e2008429588b857bbc13d048b67b931a8d84816 (diff) | |
iio: adc: ad7292: 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: 506d2e317a0a ("iio: adc: Add driver support for AD7292")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Marcelo Schmitt <marcelo.schmitt1@gmail.com>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220508175712.647246-12-jic23@kernel.org
| -rw-r--r-- | drivers/iio/adc/ad7292.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iio/adc/ad7292.c b/drivers/iio/adc/ad7292.c index 3271a31afde1..92c68d467c50 100644 --- a/drivers/iio/adc/ad7292.c +++ b/drivers/iio/adc/ad7292.c @@ -80,7 +80,7 @@ struct ad7292_state { struct regulator *reg; unsigned short vref_mv; - __be16 d16 ____cacheline_aligned; + __be16 d16 __aligned(IIO_DMA_MINALIGN); u8 d8[2]; }; |