From c9a8417a13ed9c81383662fca8a4b89f84d31e78 Mon Sep 17 00:00:00 2001
From: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Date: Sun, 8 May 2022 18:56:56 +0100
Subject: [PATCH] iio: imu: fxos8700: Fix alignment for DMA safety
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Git-commit: c9a8417a13ed9c81383662fca8a4b89f84d31e78
Patch-mainline: v6.0-rc1
References: git-fixes
____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: 84e5ddd5c46e ("iio: imu: Add support for the FXOS8700 IMU")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Robert Jones <rjones@gateworks.com>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220508175712.647246-77-jic23@kernel.org
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/iio/imu/fxos8700_core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iio/imu/fxos8700_core.c b/drivers/iio/imu/fxos8700_core.c
index ab288186f36e..423cfe526f2a 100644
--- a/drivers/iio/imu/fxos8700_core.c
+++ b/drivers/iio/imu/fxos8700_core.c
@@ -167,7 +167,7 @@
struct fxos8700_data {
struct regmap *regmap;
struct iio_trigger *trig;
- __be16 buf[FXOS8700_DATA_BUF_SIZE] ____cacheline_aligned;
+ __be16 buf[FXOS8700_DATA_BUF_SIZE] __aligned(IIO_DMA_MINALIGN);
};
/* Regmap info */
--
2.35.3