Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 5.19 0660/1157] iio: adc: ti-adc12138: Fix alignment for DMA safety | Date | Mon, 15 Aug 2022 20:00:16 +0200 |
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From: Jonathan Cameron <Jonathan.Cameron@huawei.com>
[ Upstream commit 76890c3bce6003caf53b283c49a210280cb8ea33 ]
____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: 50a6edb1b6e0 ("iio: adc: add ADC12130/ADC12132/ADC12138 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/20220508175712.647246-32-jic23@kernel.org Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/iio/adc/ti-adc12138.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iio/adc/ti-adc12138.c b/drivers/iio/adc/ti-adc12138.c index 59d75d09604f..c0a72d72f3a9 100644 --- a/drivers/iio/adc/ti-adc12138.c +++ b/drivers/iio/adc/ti-adc12138.c @@ -55,7 +55,7 @@ struct adc12138 { */ __be16 data[20] __aligned(8); - u8 tx_buf[2] ____cacheline_aligned; + u8 tx_buf[2] __aligned(IIO_DMA_MINALIGN); u8 rx_buf[2]; }; -- 2.35.1
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