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Date: Mon, 15 Aug 2022 20:00:59 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Jonathan Cameron <Jonathan.Cameron@...wei.com>, Robert Jones <rjones@...eworks.com>, Nuno Sá <nuno.sa@...log.com>, Sasha Levin <sashal@...nel.org> Subject: [PATCH 5.18 0660/1095] iio: imu: fxos8700: Fix alignment for DMA safety From: Jonathan Cameron <Jonathan.Cameron@...wei.com> [ Upstream commit c9a8417a13ed9c81383662fca8a4b89f84d31e78 ] ____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@...wei.com> Cc: Robert Jones <rjones@...eworks.com> Acked-by: Nuno Sá <nuno.sa@...log.com> Link: https://lore.kernel.org/r/20220508175712.647246-77-jic23@kernel.org Signed-off-by: Sasha Levin <sashal@...nel.org> --- 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 */ -- 2.35.1
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