From 58e22371539e01c742be5c30295f591a6a17e348 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 8 May 2022 18:56:42 +0100 Subject: [PATCH] iio: dac: ti-dac5571: 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: df38a4a72a3b ("iio: dac: add TI DAC5571 family support") Signed-off-by: Jonathan Cameron Cc: Sean Nyekjaer Acked-by: Nuno Sá Link: https://lore.kernel.org/r/20220508175712.647246-63-jic23@kernel.org --- drivers/iio/dac/ti-dac5571.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/dac/ti-dac5571.c b/drivers/iio/dac/ti-dac5571.c index 9ea42e0..f91f8a5 100644 --- a/drivers/iio/dac/ti-dac5571.c +++ b/drivers/iio/dac/ti-dac5571.c @@ -53,7 +53,7 @@ struct dac5571_data { struct dac5571_spec const *spec; int (*dac5571_cmd)(struct dac5571_data *data, int channel, u16 val); int (*dac5571_pwrdwn)(struct dac5571_data *data, int channel, u8 pwrdwn); - u8 buf[3] ____cacheline_aligned; + u8 buf[3] __aligned(IIO_DMA_MINALIGN); }; #define DAC5571_POWERDOWN(mode) ((mode) + 1) -- 2.7.4