From e754fb7e7a05e3838c9aa044b4114869dd0d1e17 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 8 May 2022 18:56:03 +0100 Subject: [PATCH] iio: adc: max1027: Fix alignment for DMA safety MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 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: fc167f624833 ("iio: add support of the max1027") Signed-off-by: Jonathan Cameron Acked-by: Nuno Sá Link: https://lore.kernel.org/r/20220508175712.647246-24-jic23@kernel.org --- drivers/iio/adc/max1027.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/adc/max1027.c b/drivers/iio/adc/max1027.c index 4daf1d576c4ee..b725d012625c1 100644 --- a/drivers/iio/adc/max1027.c +++ b/drivers/iio/adc/max1027.c @@ -272,7 +272,7 @@ struct max1027_state { struct mutex lock; struct completion complete; - u8 reg ____cacheline_aligned; + u8 reg __aligned(IIO_DMA_MINALIGN); }; static int max1027_wait_eoc(struct iio_dev *indio_dev) -- 2.30.2