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| author | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-05-08 18:56:08 +0100 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-06-14 11:53:14 +0100 |
| commit | 1e6bb81c23a84a078736a0f2a52bd765863e94ed (patch) | |
| tree | 3512161e30d37ac3469cc0d1f9e6ea70869db6f5 /drivers/iio/adc/ti-adc0832.c | |
| parent | e770f78036ce4327caf285873f4b20564a8b4f0f (diff) | |
| download | linux-1e6bb81c23a84a078736a0f2a52bd765863e94ed.tar.gz | |
iio: adc: ti-adc0832: 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: efc945fb729c ("iio: adc: add support for ADC0831/ADC0832/ADC0834/ADC0838 chips")
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/20220508175712.647246-29-jic23@kernel.org
Diffstat (limited to 'drivers/iio/adc/ti-adc0832.c')
| -rw-r--r-- | drivers/iio/adc/ti-adc0832.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iio/adc/ti-adc0832.c b/drivers/iio/adc/ti-adc0832.c index fb5e72600b96..b11ce555ba3b 100644 --- a/drivers/iio/adc/ti-adc0832.c +++ b/drivers/iio/adc/ti-adc0832.c @@ -36,7 +36,7 @@ struct adc0832 { */ u8 data[24] __aligned(8); - u8 tx_buf[2] ____cacheline_aligned; + u8 tx_buf[2] __aligned(IIO_DMA_MINALIGN); u8 rx_buf[2]; }; |