Commit 76890c3b authored by Jonathan Cameron's avatar Jonathan Cameron
Browse files

iio: adc: ti-adc12138: 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: 50a6edb1 ("iio: adc: add ADC12130/ADC12132/ADC12138 ADC driver")
Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: default avatarNuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220508175712.647246-32-jic23@kernel.org
parent 6909fe17

drivers/iio/adc/ti-adc12138.c

+1 −1
Original line number Diff line number Diff line
@@ -55,7 +55,7 @@ struct adc12138 { 
	 */

	__be16 data[20] __aligned(8);



	u8 tx_buf[2] ____cacheline_aligned;

	u8 tx_buf[2] __aligned(IIO_DMA_MINALIGN);

	u8 rx_buf[2];

};