[PATCH 5.18 0655/1095] iio: frequency: adrf6780: Fix alignment for DMA safety

[Greg Kroah-Hartman]

From: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>

[ 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@xxxxxxxxxx>
Cc: Antoniu Miclaus <antoniu.miclaus@xxxxxxxxxx>
Acked-by: Nuno Sá <nuno.sa@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20220508175712.647246-72-jic23@xxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 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