From: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Date: Sun, 8 May 2022 17:55:48 +0000 (+0100)
Subject: iio: accel: sca3300: Fix alignment for DMA safety
X-Git-Tag: v5.18.18~505
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5dc9daa360a29a1254c4b0d05e19067ab5b47a91;p=thirdparty%2Fkernel%2Fstable.git

iio: accel: sca3300: Fix alignment for DMA safety

[ Upstream commit b1d3a806630dbbf3b4d75a2e850adccf4f4439e7 ]

____cacheline_aligned is insufficient guarantee for non-coherent DMA.
Switch to the updated IIO_DMA_MINALIGN definition.

Fixes: 9cc9806e22178 ("iio: accel: Add driver for Murata SCA3300 accelerometer")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Tomas Melin <tomas.melin@vaisala.com>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220508175712.647246-9-jic23@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/drivers/iio/accel/sca3300.c b/drivers/iio/accel/sca3300.c
index f7ef8ecfd34a6..39e0c24364aec 100644
--- a/drivers/iio/accel/sca3300.c
+++ b/drivers/iio/accel/sca3300.c
@@ -115,7 +115,7 @@ struct sca3300_data {
 		s16 channels[4];
 		s64 ts __aligned(sizeof(s64));
 	} scan;
-	u8 txbuf[4] ____cacheline_aligned;
+	u8 txbuf[4] __aligned(IIO_DMA_MINALIGN);
 	u8 rxbuf[4];
 };