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| author | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-05-08 20:56:43 +0300 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-06-14 13:53:17 +0300 |
| commit | 3637c49ed54632d7c221af718d2d7b1d381d4b6e (patch) | |
| tree | fe2890f7d1f74c79d78beb0d0ec1ba194dfbdee9 /drivers/iio/dac | |
| parent | 58e22371539e01c742be5c30295f591a6a17e348 (diff) | |
| download | linux-3637c49ed54632d7c221af718d2d7b1d381d4b6e.tar.xz | |
iio: dac: ti-dac7311: 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: 7a02ef7907d8 ("iio:dac:ti-dac7311 Add driver for Texas Instrument DAC7311")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Charles-Antoine Couret <charles-antoine.couret@essensium.com>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220508175712.647246-64-jic23@kernel.org
Diffstat (limited to 'drivers/iio/dac')
| -rw-r--r-- | drivers/iio/dac/ti-dac7311.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iio/dac/ti-dac7311.c b/drivers/iio/dac/ti-dac7311.c index 4afc411725d9..7f89d2a52f49 100644 --- a/drivers/iio/dac/ti-dac7311.c +++ b/drivers/iio/dac/ti-dac7311.c @@ -52,7 +52,7 @@ struct ti_dac_chip { bool powerdown; u8 powerdown_mode; u8 resolution; - u8 buf[2] ____cacheline_aligned; + u8 buf[2] __aligned(IIO_DMA_MINALIGN); }; static u8 ti_dac_get_power(struct ti_dac_chip *ti_dac, bool powerdown) |