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| author | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-05-08 19:56:00 +0200 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-06-14 12:53:13 +0200 |
| commit | 48e4ae96b0b10f93de23b86fd34e573c44e95ab3 (patch) | |
| tree | a1ceaa1a45bce2576a214e2a027eedeb1eb5c75f /drivers/iio/adc/hi8435.c | |
| parent | iio: adc: ad7949: Fix alignment for DMA safety (diff) | |
| download | linux-48e4ae96b0b10f93de23b86fd34e573c44e95ab3.tar.xz linux-48e4ae96b0b10f93de23b86fd34e573c44e95ab3.zip | |
iio: adc: hi8435: 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: 72aa29ce0a59 ("iio: adc: hi8435: Holt HI-8435 threshold detector")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220508175712.647246-21-jic23@kernel.org
Diffstat (limited to 'drivers/iio/adc/hi8435.c')
| -rw-r--r-- | drivers/iio/adc/hi8435.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iio/adc/hi8435.c b/drivers/iio/adc/hi8435.c index 8eb0140df133..771fa12bdc02 100644 --- a/drivers/iio/adc/hi8435.c +++ b/drivers/iio/adc/hi8435.c @@ -49,7 +49,7 @@ struct hi8435_priv { unsigned threshold_lo[2]; /* GND-Open and Supply-Open thresholds */ unsigned threshold_hi[2]; /* GND-Open and Supply-Open thresholds */ - u8 reg_buffer[3] ____cacheline_aligned; + u8 reg_buffer[3] __aligned(IIO_DMA_MINALIGN); }; static int hi8435_readb(struct hi8435_priv *priv, u8 reg, u8 *val) |