Commit 3637c49e authored by Jonathan Cameron's avatar Jonathan Cameron
Browse files

iio: dac: ti-dac7311: 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: 7a02ef79 ("iio:dac:ti-dac7311 Add driver for Texas Instrument DAC7311")
Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Charles-Antoine Couret <charles-antoine.couret@essensium.com>
Acked-by: default avatarNuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220508175712.647246-64-jic23@kernel.org
parent 58e22371

drivers/iio/dac/ti-dac7311.c

+1 −1
Original line number Diff line number Diff line
@@ -52,7 +52,7 @@ struct ti_dac_chip { 
	bool powerdown;

	u8 powerdown_mode;

	u8 resolution;

	u8 buf[2] ____cacheline_aligned;

	u8 buf[2] __aligned(IIO_DMA_MINALIGN);

};



static u8 ti_dac_get_power(struct ti_dac_chip *ti_dac, bool powerdown)