Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 5.19 0700/1157] iio: frequency: adrf6780: Fix alignment for DMA safety | Date | Mon, 15 Aug 2022 20:00:56 +0200 |
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From: Jonathan Cameron <Jonathan.Cameron@huawei.com>
[ Upstream commit 9a5b11884cb72780cb824cac8aab47094654a84f ]
____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: 63aaf6d06d87 ("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 Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/iio/frequency/adrf6780.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iio/frequency/adrf6780.c b/drivers/iio/frequency/adrf6780.c index 8255ffd174f6..21878bad0909 100644 --- a/drivers/iio/frequency/adrf6780.c +++ b/drivers/iio/frequency/adrf6780.c @@ -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, -- 2.35.1
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