iio: common: ssp: 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: 50dd64d57eee ("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

diff --git a/drivers/iio/common/ssp_sensors/ssp.h b/drivers/iio/common/ssp_sensors/ssp.h
index abb8327956194d6f128955f745d243f4009a853d..f649cdecc2774847546270bcb0f2ec96398a7310 100644 (file)
--- a/drivers/iio/common/ssp_sensors/ssp.h
+++ b/drivers/iio/common/ssp_sensors/ssp.h
@@ -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);