[PATCH 5.18 0587/1095] iio: accel: adxl313: Fix alignment for DMA safety

Greg Kroah-Hartman
2022-08-15T21:33:51Z

From: Jonathan Cameron <Jonathan.Cameron@huawei.com>

[ Upstream commit f68a0445ee86e48dafbfdea50163ad6fc6dba268 ]

____cacheline_aligned is insufficient guarantee for non-coherent DMA.
Switch to the updated IIO_DMA_MINALIGN definition.

Fixes: 636d44633039 ("iio: accel: Add driver support for ADXL313")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220508175712.647246-3-jic23@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/iio/accel/adxl313_core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iio/accel/adxl313_core.c b/drivers/iio/accel/adxl313_core.c
index 9e4193e64765..afeef779e1d0 100644
--- a/drivers/iio/accel/adxl313_core.c
+++ b/drivers/iio/accel/adxl313_core.c
@@ -46,7 +46,7 @@ EXPORT_SYMBOL_NS_GPL(adxl313_writable_regs_table, IIO_ADXL313);
struct adxl313_data {
struct regmap *regmap;
struct mutex lock; /* lock to protect transf_buf */
- __le16 transf_buf ____cacheline_aligned;
+ __le16 transf_buf __aligned(IIO_DMA_MINALIGN);
};

static const int adxl313_odr_freqs[][2] = {
--
2.35.1