[PATCH 5.19 0635/1157] iio: accel: bma220: Fix alignment for DMA safety

Greg Kroah-Hartman
2022-08-16T00:14:06Z

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

[ Upstream commit 38e71240e2ff97184cdcdaf877cf62d3f16678e2 ]

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

Fixes: bf2a5600a3ebc ("iio: accel: Add support for Bosch BMA220")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220508175712.647246-6-jic23@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/iio/accel/bma220_spi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iio/accel/bma220_spi.c b/drivers/iio/accel/bma220_spi.c
index 74024d7ce5ac..b6d9ab8e2054 100644
--- a/drivers/iio/accel/bma220_spi.c
+++ b/drivers/iio/accel/bma220_spi.c
@@ -67,7 +67,7 @@ struct bma220_data {
/* Ensure timestamp is naturally aligned. */
s64 timestamp __aligned(8);
} scan;
- u8 tx_buf[2] ____cacheline_aligned;
+ u8 tx_buf[2] __aligned(IIO_DMA_MINALIGN);
};

static const struct iio_chan_spec bma220_channels[] = {
--
2.35.1