Commit 03a0cc77 authored by Jonathan Cameron's avatar Jonathan Cameron
Browse files

iio: dac: ti-dac082s085: 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: 61011264 ("iio: dac: Add Texas Instruments 8/10/12-bit 2/4-channel DAC driver")
Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: default avatarNuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220508175712.647246-62-jic23@kernel.org
parent e66bf047

drivers/iio/dac/ti-dac082s085.c

+1 −1
Original line number Diff line number Diff line
@@ -55,7 +55,7 @@ struct ti_dac_chip { 
	bool powerdown;

	u8 powerdown_mode;

	u8 resolution;

	u8 buf[2] ____cacheline_aligned;

	u8 buf[2] __aligned(IIO_DMA_MINALIGN);

};



#define WRITE_NOT_UPDATE(chan)	(0x00 | (chan) << 6)