diff mbox series

[82/92] iio: potentiometer: max5481: Fix alignment for DMA safety

Message ID 20220503085935.1533814-83-jic23@kernel.org (mailing list archive)
State Superseded
Headers show
Series IIO: Fix alignment of buffers for DMA | expand

Commit Message

Jonathan Cameron May 3, 2022, 8:59 a.m. UTC 
From: Jonathan Cameron <Jonathan.Cameron@huawei.com>

____cacheline_aligned is an insufficient guarantee for non-coherent DMA
on platforms with 128 byte cachelines above L1.  Switch to the updated
IIO_ALIGN definition.

Fixes: df1fd2de118e ("iio: max5481: Add support for Maxim digital potentiometers")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
 drivers/iio/potentiometer/max5481.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/iio/potentiometer/max5481.c b/drivers/iio/potentiometer/max5481.c
index 098d144a8fdd..6e22b31cbe8b 100644
--- a/drivers/iio/potentiometer/max5481.c
+++ b/drivers/iio/potentiometer/max5481.c
@@ -44,7 +44,7 @@  static const struct max5481_cfg max5481_cfg[] = {
 struct max5481_data {
 	struct spi_device *spi;
 	const struct max5481_cfg *cfg;
-	u8 msg[3] ____cacheline_aligned;
+	u8 msg[3] __aligned(IIO_ALIGN);
 };
 
 #define MAX5481_CHANNEL {					\