From da803652534271dbb4af0802bd678c759e27e6de Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 8 May 2022 18:57:01 +0100 Subject: iio: potentiometer: ad5272: 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: 79e8a32d2aa9 ("iio: ad5272: Add support for Analog Devices digital potentiometers") Signed-off-by: Jonathan Cameron Reviewed-by: Phil Reid Acked-by: Nuno Sá Link: https://lore.kernel.org/r/20220508175712.647246-82-jic23@kernel.org --- drivers/iio/potentiometer/ad5272.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/iio/potentiometer') diff --git a/drivers/iio/potentiometer/ad5272.c b/drivers/iio/potentiometer/ad5272.c index d8cbd170262f..ed5fc0b50fe9 100644 --- a/drivers/iio/potentiometer/ad5272.c +++ b/drivers/iio/potentiometer/ad5272.c @@ -50,7 +50,7 @@ struct ad5272_data { struct i2c_client *client; struct mutex lock; const struct ad5272_cfg *cfg; - u8 buf[2] ____cacheline_aligned; + u8 buf[2] __aligned(IIO_DMA_MINALIGN); }; static const struct iio_chan_spec ad5272_channel = { -- cgit v1.2.3