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| author | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-05-08 20:56:41 +0300 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-06-14 13:53:17 +0300 |
| commit | 03a0cc77f164e4e59b970d50c6e9a6caf06dae80 (patch) | |
| tree | 98a84e747f09f5e52c242e937b91b0eccc071875 /drivers | |
| parent | e66bf04797f1f95a2402414c00e64d00f63d31ec (diff) | |
| download | linux-03a0cc77f164e4e59b970d50c6e9a6caf06dae80.tar.xz | |
iio: dac: ti-dac082s085: 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: 61011264c1af ("iio: dac: Add Texas Instruments 8/10/12-bit 2/4-channel DAC driver")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220508175712.647246-62-jic23@kernel.org
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/iio/dac/ti-dac082s085.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iio/dac/ti-dac082s085.c b/drivers/iio/dac/ti-dac082s085.c index 106ce3546419..8e1590e3cc8b 100644 --- a/drivers/iio/dac/ti-dac082s085.c +++ b/drivers/iio/dac/ti-dac082s085.c @@ -55,7 +55,7 @@ struct ti_dac_chip { bool powerdown; u8 powerdown_mode; u8 resolution; - u8 buf[2] ____cacheline_aligned; + u8 buf[2] __aligned(IIO_DMA_MINALIGN); }; #define WRITE_NOT_UPDATE(chan) (0x00 | (chan) << 6) |