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[74/92] iio: gyro: adxrs450: Fix alignment for DMA safety

Message ID 20220503085935.1533814-75-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State Superseded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 tag is inaccurate but unlikely anyone will be interested in
backporting beyond that point.

Fixes: 53ac8500ba9b ("staging:iio:adxrs450: Move header file contents to main file")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
 drivers/iio/gyro/adxrs450.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/iio/gyro/adxrs450.c b/drivers/iio/gyro/adxrs450.c
index 04f350025215..248841461ac4 100644
--- a/drivers/iio/gyro/adxrs450.c
+++ b/drivers/iio/gyro/adxrs450.c
@@ -73,7 +73,7 @@  enum {
 struct adxrs450_state {
 	struct spi_device	*us;
 	struct mutex		buf_lock;
-	__be32			tx ____cacheline_aligned;
+	__be32			tx __aligned(IIO_ALIGN);
 	__be32			rx;
 
 };