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| author | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-05-08 20:56:05 +0300 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-06-14 13:53:13 +0300 |
| commit | f746ab0bac5b335b09143dcd01db6f9f26d0c9ec (patch) | |
| tree | 37fe96df75ee4165e1691238fbfc0d673018aabb /drivers/iio/adc/max1118.c | |
| parent | 51f30d63145cc84cb8a8e0ec96f9a8b73e6b5448 (diff) | |
| download | linux-f746ab0bac5b335b09143dcd01db6f9f26d0c9ec.tar.xz | |
iio: adc: max1118: Fix alignment for DMA safety
____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: a9e9c7153e96 ("iio: adc: add max1117/max1118/max1119 ADC driver")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220508175712.647246-26-jic23@kernel.org
Diffstat (limited to 'drivers/iio/adc/max1118.c')
| -rw-r--r-- | drivers/iio/adc/max1118.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iio/adc/max1118.c b/drivers/iio/adc/max1118.c index a41bc570be21..75ab57d9aef7 100644 --- a/drivers/iio/adc/max1118.c +++ b/drivers/iio/adc/max1118.c @@ -42,7 +42,7 @@ struct max1118 { s64 ts __aligned(8); } scan; - u8 data ____cacheline_aligned; + u8 data __aligned(IIO_DMA_MINALIGN); }; #define MAX1118_CHANNEL(ch) \ |