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| author | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-05-08 20:56:42 +0300 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-06-14 13:53:17 +0300 |
| commit | 58e22371539e01c742be5c30295f591a6a17e348 (patch) | |
| tree | 08aa4a0fdf3b418b43bbddbc78d713d9d91fb2f3 /drivers/iio/dac | |
| parent | 03a0cc77f164e4e59b970d50c6e9a6caf06dae80 (diff) | |
| download | linux-58e22371539e01c742be5c30295f591a6a17e348.tar.xz | |
iio: dac: ti-dac5571: 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: df38a4a72a3b ("iio: dac: add TI DAC5571 family support")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Sean Nyekjaer <sean.nyekjaer@prevas.dk>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220508175712.647246-63-jic23@kernel.org
Diffstat (limited to 'drivers/iio/dac')
| -rw-r--r-- | drivers/iio/dac/ti-dac5571.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iio/dac/ti-dac5571.c b/drivers/iio/dac/ti-dac5571.c index 9ea42e0beb8d..f91f8a504989 100644 --- a/drivers/iio/dac/ti-dac5571.c +++ b/drivers/iio/dac/ti-dac5571.c @@ -53,7 +53,7 @@ struct dac5571_data { struct dac5571_spec const *spec; int (*dac5571_cmd)(struct dac5571_data *data, int channel, u16 val); int (*dac5571_pwrdwn)(struct dac5571_data *data, int channel, u8 pwrdwn); - u8 buf[3] ____cacheline_aligned; + u8 buf[3] __aligned(IIO_DMA_MINALIGN); }; #define DAC5571_POWERDOWN(mode) ((mode) + 1) |