Commit 00b9737c authored by Jonathan Cameron's avatar Jonathan Cameron
Browse files

iio: dac: ad5504: 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: 0dbe59c7 ("iio:ad5504: Do not store transfer buffers on the stack")
Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: default avatarNuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220508175712.647246-48-jic23@kernel.org
parent 678d536b

drivers/iio/dac/ad5504.c

+1 −1
Original line number Diff line number Diff line
@@ -54,7 +54,7 @@ struct ad5504_state { 
	unsigned			pwr_down_mask;

	unsigned			pwr_down_mode;



	__be16				data[2] ____cacheline_aligned;

	__be16				data[2] __aligned(IIO_DMA_MINALIGN);

};



/*