diff mbox series

[v2,42/92] iio: common: ssp: Fix alignment for DMA safety

Message ID 20220508175712.647246-43-jic23@kernel.org (mailing list archive)
State Accepted
Headers show
Series IIO: Fix alignment of buffers for DMA | expand

Commit Message

Jonathan Cameron May 8, 2022, 5:56 p.m. UTC 
From: Jonathan Cameron <Jonathan.Cameron@huawei.com>

____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>
---
 drivers/iio/common/ssp_sensors/ssp.h | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/iio/common/ssp_sensors/ssp.h b/drivers/iio/common/ssp_sensors/ssp.h
index abb832795619..f649cdecc277 100644
--- 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);