Commit 8482468b authored by Jonathan Cameron's avatar Jonathan Cameron
Browse files

iio: dac: ad7293: 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: 0bb12606 ("iio:dac:ad7293: add support for AD7293")
Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Antoniu Miclaus <antoniu.miclaus@analog.com>
Acked-by: default avatarNuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220508175712.647246-57-jic23@kernel.org
parent b2d5e9de

drivers/iio/dac/ad7293.c

+1 −1
Original line number Diff line number Diff line
@@ -144,7 +144,7 @@ struct ad7293_state { 
	struct regulator *reg_avdd;

	struct regulator *reg_vdrive;

	u8 page_select;

	u8 data[3] ____cacheline_aligned;

	u8 data[3] __aligned(IIO_DMA_MINALIGN);

};



static int ad7293_page_select(struct ad7293_state *st, unsigned int reg)