Commit 58e22371 authored by Jonathan Cameron's avatar Jonathan Cameron
Browse files

iio: dac: ti-dac5571: 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: df38a4a7 ("iio: dac: add TI DAC5571 family support")
Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Sean Nyekjaer <sean.nyekjaer@prevas.dk>
Acked-by: default avatarNuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220508175712.647246-63-jic23@kernel.org
parent 03a0cc77

drivers/iio/dac/ti-dac5571.c

+1 −1
Original line number Diff line number Diff line
@@ -53,7 +53,7 @@ struct dac5571_data { 
	struct dac5571_spec const *spec;

	int (*dac5571_cmd)(struct dac5571_data *data, int channel, u16 val);

	int (*dac5571_pwrdwn)(struct dac5571_data *data, int channel, u8 pwrdwn);

	u8 buf[3] ____cacheline_aligned;

	u8 buf[3] __aligned(IIO_DMA_MINALIGN);

};



#define DAC5571_POWERDOWN(mode)		((mode) + 1)