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| author | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-05-08 20:56:03 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-08-17 16:15:10 +0300 |
| commit | 68427acc936fcf95db86c58a6de7a768be96bd17 (patch) | |
| tree | f7ac5244224e342ed0ec495f95e03ebd30e1c224 /drivers/iio/adc/max1027.c | |
| parent | f48a263998a6d9222b51b9d2a673249061de0e49 (diff) | |
| download | linux-68427acc936fcf95db86c58a6de7a768be96bd17.tar.xz | |
iio: adc: max1027: Fix alignment for DMA safety
[ Upstream commit e754fb7e7a05e3838c9aa044b4114869dd0d1e17 ]
____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: fc167f624833 ("iio: add support of the max1027")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220508175712.647246-24-jic23@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/iio/adc/max1027.c')
| -rw-r--r-- | drivers/iio/adc/max1027.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iio/adc/max1027.c b/drivers/iio/adc/max1027.c index 4daf1d576c4e..b725d012625c 100644 --- a/drivers/iio/adc/max1027.c +++ b/drivers/iio/adc/max1027.c @@ -272,7 +272,7 @@ struct max1027_state { struct mutex lock; struct completion complete; - u8 reg ____cacheline_aligned; + u8 reg __aligned(IIO_DMA_MINALIGN); }; static int max1027_wait_eoc(struct iio_dev *indio_dev) |