From 76890c3bce6003caf53b283c49a210280cb8ea33 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 8 May 2022 18:56:11 +0100 Subject: [PATCH] iio: adc: ti-adc12138: 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: 50a6edb1b6e0 ("iio: adc: add ADC12130/ADC12132/ADC12138 ADC driver") Signed-off-by: Jonathan Cameron Cc: Akinobu Mita Acked-by: Nuno Sá Link: https://lore.kernel.org/r/20220508175712.647246-32-jic23@kernel.org --- drivers/iio/adc/ti-adc12138.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/adc/ti-adc12138.c b/drivers/iio/adc/ti-adc12138.c index 59d75d09604f..c0a72d72f3a9 100644 --- a/drivers/iio/adc/ti-adc12138.c +++ b/drivers/iio/adc/ti-adc12138.c @@ -55,7 +55,7 @@ struct adc12138 { */ __be16 data[20] __aligned(8); - u8 tx_buf[2] ____cacheline_aligned; + u8 tx_buf[2] __aligned(IIO_DMA_MINALIGN); u8 rx_buf[2]; };