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| author |   Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-05-08 18:56:52 +0100 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-06-14 11:53:18 +0100 |
| commit | ae6eeb534924ecc2afd5a394964fd6de0ca54d39 (patch) | |
| tree | f8d27e68e2f19d0dd879f1c79a010e59d68cfb6b /drivers/iio/gyro/adis16080.c | |
| parent | iio: frequency: adrf6780: Fix alignment for DMA safety (diff) | |
| download | linux-dev-ae6eeb534924ecc2afd5a394964fd6de0ca54d39.tar.xz linux-dev-ae6eeb534924ecc2afd5a394964fd6de0ca54d39.zip | |
iio: gyro: adis16080: 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 tag is inaccurate but unlikely anyone will backport this
beyond that point so I haven't chased the history futher than 2013.
Fixes: 3c80372dae17 ("staging:iio:adis16080: be16 cleanups")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220508175712.647246-73-jic23@kernel.org
Diffstat (limited to 'drivers/iio/gyro/adis16080.c')
| -rw-r--r-- | drivers/iio/gyro/adis16080.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iio/gyro/adis16080.c b/drivers/iio/gyro/adis16080.c index acef59d822b1..14b3abf6dce9 100644 --- a/drivers/iio/gyro/adis16080.c +++ b/drivers/iio/gyro/adis16080.c @@ -45,7 +45,7 @@ struct adis16080_state { const struct adis16080_chip_info *info; struct mutex lock; - __be16 buf ____cacheline_aligned; + __be16 buf __aligned(IIO_DMA_MINALIGN); }; static int adis16080_read_sample(struct iio_dev *indio_dev, |