From: Jonathan Cameron Jonathan.Cameron@huawei.com
[ Upstream commit b2d5e9de77c8774a5a6cff59d928f2fa38cbc642 ]
____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: 791bb52a0cd2 ("iio:ad5791: Do not store transfer buffers on the stack") Signed-off-by: Jonathan Cameron Jonathan.Cameron@huawei.com Acked-by: Nuno Sá nuno.sa@analog.com Link: https://lore.kernel.org/r/20220508175712.647246-56-jic23@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/iio/dac/ad5791.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iio/dac/ad5791.c b/drivers/iio/dac/ad5791.c index 339564fe47d1..a4167454da81 100644 --- a/drivers/iio/dac/ad5791.c +++ b/drivers/iio/dac/ad5791.c @@ -95,7 +95,7 @@ struct ad5791_state { union { __be32 d32; u8 d8[4]; - } data[3] ____cacheline_aligned; + } data[3] __aligned(IIO_DMA_MINALIGN); };
enum ad5791_supported_device_ids {