From: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
[ Upstream commit 8966b11e5a14aaabc747ee97a7942fd50a681402 ]
____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: 8dd2d7c0fed7 ("iio: adc: Add driver for the TI ADS8344 A/DC chips")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Acked-by: Nuno Sá <nuno.sa@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20220508175712.647246-38-jic23@xxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/iio/adc/ti-ads8344.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iio/adc/ti-ads8344.c b/drivers/iio/adc/ti-ads8344.c
index c96d2a9ba924..bbd85cb47f81 100644
--- a/drivers/iio/adc/ti-ads8344.c
+++ b/drivers/iio/adc/ti-ads8344.c
@@ -28,7 +28,7 @@ struct ads8344 {
*/
struct mutex lock;
- u8 tx_buf ____cacheline_aligned;
+ u8 tx_buf __aligned(IIO_DMA_MINALIGN);
u8 rx_buf[3];
};
--
2.35.1
