This is a note to let you know that I've just added the patch titled iio: frequency: adf4371: 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-frequency-adf4371-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 4861d2d8fa3b7a56ef0c6e46a51845353df9c46f Author: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx> Date: Sun May 8 18:56:47 2022 +0100 iio: frequency: adf4371: Fix alignment for DMA safety [ Upstream commit 0bb5675befe666eeed71ad808426cf2ec1c9a714 ] ____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: 7f699bd14913 ("iio: frequency: adf4371: Add support for ADF4371 PLL") Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx> Acked-by: Nuno Sá <nuno.sa@xxxxxxxxxx> Link: https://lore.kernel.org/r/20220508175712.647246-68-jic23@xxxxxxxxxx Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/iio/frequency/adf4371.c b/drivers/iio/frequency/adf4371.c index ecd5e18995ad..135c8cedc33d 100644 --- a/drivers/iio/frequency/adf4371.c +++ b/drivers/iio/frequency/adf4371.c @@ -175,7 +175,7 @@ struct adf4371_state { unsigned int mod2; unsigned int rf_div_sel; unsigned int ref_div_factor; - u8 buf[10] ____cacheline_aligned; + u8 buf[10] __aligned(IIO_DMA_MINALIGN); }; static unsigned long long adf4371_pll_fract_n_get_rate(struct adf4371_state *st,