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iio: frequency: adrf6780: Fix alignment for DMA safety

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____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: 63aaf6d06d ("iio: frequency: adrf6780: add support for ADRF6780")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Antoniu Miclaus <antoniu.miclaus@analog.com>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220508175712.647246-72-jic23@kernel.org
This commit is contained in:
Jonathan Cameron 2022-05-08 18:56:51 +01:00
parent f890aaac77
commit 9a5b11884c
1 changed files with 1 additions and 1 deletions
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2
drivers/iio/frequency/adrf6780.c
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@ -86,7 +86,7 @@ struct adrf6780_state {
bool uc_bias_en;
bool lo_sideband;
bool vdet_out_en;
u8 data[3] ____cacheline_aligned;
u8 data[3] __aligned(IIO_DMA_MINALIGN);
};
static int __adrf6780_spi_read(struct adrf6780_state *st, unsigned int reg,