Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 5.19 0654/1157] iio: adc: max1118: Fix alignment for DMA safety | Date | Mon, 15 Aug 2022 20:00:10 +0200 |
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From: Jonathan Cameron <Jonathan.Cameron@huawei.com>
[ Upstream commit f746ab0bac5b335b09143dcd01db6f9f26d0c9ec ]
____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 Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/iio/adc/max1118.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
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) \ -- 2.35.1
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