This is a note to let you know that I've just added the patch titled iio: dac: ti-dac7311: Fix alignment for DMA safety to the 5.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: iio-dac-ti-dac7311-fix-alignment-for-dma-safety.patch and it can be found in the queue-5.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 36746538b1694ca8125e10b7066c2fb7fac4d4fb Author: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx> Date: Sun May 8 18:56:43 2022 +0100 iio: dac: ti-dac7311: Fix alignment for DMA safety [ Upstream commit 3637c49ed54632d7c221af718d2d7b1d381d4b6e ] ____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: 7a02ef7907d8 ("iio:dac:ti-dac7311 Add driver for Texas Instrument DAC7311") Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx> Cc: Charles-Antoine Couret <charles-antoine.couret@xxxxxxxxxxxxx> Acked-by: Nuno Sá <nuno.sa@xxxxxxxxxx> Link: https://lore.kernel.org/r/20220508175712.647246-64-jic23@xxxxxxxxxx Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/iio/dac/ti-dac7311.c b/drivers/iio/dac/ti-dac7311.c index e10d17e60ed3..dd0a7b77838d 100644 --- a/drivers/iio/dac/ti-dac7311.c +++ b/drivers/iio/dac/ti-dac7311.c @@ -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)