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| author | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-05-08 20:56:12 +0300 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-06-14 13:53:14 +0300 |
| commit | 23c81e7a7e5204a08b553d07362d3082926663b8 (patch) | |
| tree | 38f052b9982b12027160a13f2268ca5f07952f0a /drivers/iio/adc/ti-adc128s052.c | |
| parent | 76890c3bce6003caf53b283c49a210280cb8ea33 (diff) | |
| download | linux-23c81e7a7e5204a08b553d07362d3082926663b8.tar.xz | |
iio: adc: ti-adc128s052: 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: 913b86468674 ("iio: adc: Add TI ADC128S052")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220508175712.647246-33-jic23@kernel.org
Diffstat (limited to 'drivers/iio/adc/ti-adc128s052.c')
| -rw-r--r-- | drivers/iio/adc/ti-adc128s052.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iio/adc/ti-adc128s052.c b/drivers/iio/adc/ti-adc128s052.c index 8e7adec87755..622fd384983c 100644 --- a/drivers/iio/adc/ti-adc128s052.c +++ b/drivers/iio/adc/ti-adc128s052.c @@ -29,7 +29,7 @@ struct adc128 { struct regulator *reg; struct mutex lock; - u8 buffer[2] ____cacheline_aligned; + u8 buffer[2] __aligned(IIO_DMA_MINALIGN); }; static int adc128_adc_conversion(struct adc128 *adc, u8 channel) |