diff options
| author | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-05-08 18:57:01 +0100 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-06-14 11:53:19 +0100 |
| commit | da803652534271dbb4af0802bd678c759e27e6de (patch) | |
| tree | 050f364de20f126ff480ab67a5c510d1fc21e3d8 /drivers/iio/potentiometer | |
| parent | b5841c38cb2f7e54b0787b3e0326a6b21b89ea3e (diff) | |
iio: potentiometer: ad5272: 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: 79e8a32d2aa9 ("iio: ad5272: Add support for Analog Devices digital potentiometers")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Phil Reid <preid@electromag.com.au>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220508175712.647246-82-jic23@kernel.org
Diffstat (limited to 'drivers/iio/potentiometer')
| -rw-r--r-- | drivers/iio/potentiometer/ad5272.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iio/potentiometer/ad5272.c b/drivers/iio/potentiometer/ad5272.c index d8cbd170262f..ed5fc0b50fe9 100644 --- a/drivers/iio/potentiometer/ad5272.c +++ b/drivers/iio/potentiometer/ad5272.c @@ -50,7 +50,7 @@ struct ad5272_data { struct i2c_client *client; struct mutex lock; const struct ad5272_cfg *cfg; - u8 buf[2] ____cacheline_aligned; + u8 buf[2] __aligned(IIO_DMA_MINALIGN); }; static const struct iio_chan_spec ad5272_channel = { |