From 00b9737caa5aaed5cf45a7c7498edf5957efa3b2 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 8 May 2022 18:56:27 +0100 Subject: [PATCH] iio: dac: ad5504: Fix alignment for DMA safety MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit ____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: 0dbe59c7a788 ("iio:ad5504: Do not store transfer buffers on the stack") Signed-off-by: Jonathan Cameron Cc: Lars-Peter Clausen Acked-by: Nuno Sá Link: https://lore.kernel.org/r/20220508175712.647246-48-jic23@kernel.org --- drivers/iio/dac/ad5504.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/dac/ad5504.c b/drivers/iio/dac/ad5504.c index a0817e799cc0..e6c5be728bb2 100644 --- a/drivers/iio/dac/ad5504.c +++ b/drivers/iio/dac/ad5504.c @@ -54,7 +54,7 @@ struct ad5504_state { unsigned pwr_down_mask; unsigned pwr_down_mode; - __be16 data[2] ____cacheline_aligned; + __be16 data[2] __aligned(IIO_DMA_MINALIGN); }; /*