From: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Date: Sun, 8 May 2022 17:55:45 +0000 (+0100)
Subject: iio: accel: bma220: Fix alignment for DMA safety
X-Git-Tag: v6.0-rc1~136^2~26^2~148
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=38e71240e2ff97184cdcdaf877cf62d3f16678e2;p=thirdparty%2Fkernel%2Fstable.git

iio: accel: bma220: Fix alignment for DMA safety

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

Fixes: bf2a5600a3ebc ("iio: accel: Add support for Bosch BMA220")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220508175712.647246-6-jic23@kernel.org
---

diff --git a/drivers/iio/accel/bma220_spi.c b/drivers/iio/accel/bma220_spi.c
index 74024d7ce5ac2..b6d9ab8e2054e 100644
--- a/drivers/iio/accel/bma220_spi.c
+++ b/drivers/iio/accel/bma220_spi.c
@@ -67,7 +67,7 @@ struct bma220_data {
 		/* Ensure timestamp is naturally aligned. */
 		s64 timestamp __aligned(8);
 	} scan;
-	u8 tx_buf[2] ____cacheline_aligned;
+	u8 tx_buf[2] __aligned(IIO_DMA_MINALIGN);
 };
 
 static const struct iio_chan_spec bma220_channels[] = {