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| author |   Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-05-08 18:56:11 +0100 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-06-14 11:53:14 +0100 |
| commit | 76890c3bce6003caf53b283c49a210280cb8ea33 (patch) | |
| tree | 98511c6b8fcd4a62d518c1e1ec27320fee04814d | |
| parent | iio: adc: ti-adc108s102: Fix alignment for DMA safety (diff) | |
| download | linux-dev-76890c3bce6003caf53b283c49a210280cb8ea33.tar.xz linux-dev-76890c3bce6003caf53b283c49a210280cb8ea33.zip | |
iio: adc: ti-adc12138: 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: 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
| -rw-r--r-- | drivers/iio/adc/ti-adc12138.c | 2 |
1 files changed, 1 insertions, 1 deletions
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]; }; |