From 55afdd050c063ae4b8dbd566107a030c00d005fd Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 8 May 2022 18:56:15 +0100 Subject: [PATCH] iio: adc: ti-ads131e08: 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: d935eddd2799 ("iio: adc: Add driver for Texas Instruments ADS131E0x ADC family") Signed-off-by: Jonathan Cameron Cc: Tomislav Denis Acked-by: Nuno Sá Link: https://lore.kernel.org/r/20220508175712.647246-36-jic23@kernel.org --- drivers/iio/adc/ti-ads131e08.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/adc/ti-ads131e08.c b/drivers/iio/adc/ti-ads131e08.c index 0c2025a225750..0dd9a50a91386 100644 --- a/drivers/iio/adc/ti-ads131e08.c +++ b/drivers/iio/adc/ti-ads131e08.c @@ -105,7 +105,7 @@ struct ads131e08_state { s64 ts __aligned(8); } tmp_buf; - u8 tx_buf[3] ____cacheline_aligned; + u8 tx_buf[3] __aligned(IIO_DMA_MINALIGN); /* * Add extra one padding byte to be able to access the last channel * value using u32 pointer -- 2.30.2