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iio: common: ssp: Fix alignment for DMA safety

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____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: 50dd64d57e ("iio: common: ssp_sensors: Add sensorhub driver")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220508175712.647246-43-jic23@kernel.org
This commit is contained in:
Jonathan Cameron 2022-05-08 18:56:22 +01:00
parent 026bffa458
commit 314d2b1978
1 changed files with 1 additions and 2 deletions
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drivers/iio/common/ssp_sensors/ssp.h
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@ -221,8 +221,7 @@ struct ssp_data {
struct iio_dev *sensor_devs[SSP_SENSOR_MAX];
atomic_t enable_refcount;
__le16 header_buffer[SSP_HEADER_BUFFER_SIZE / sizeof(__le16)]
____cacheline_aligned;
__le16 header_buffer[SSP_HEADER_BUFFER_SIZE / sizeof(__le16)] __aligned(IIO_DMA_MINALIGN);
};
void ssp_clean_pending_list(struct ssp_data *data);