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[86/92] iio: proximity: as3935: Fix alignment for DMA safety

Message ID 20220503085935.1533814-87-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State Superseded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: 24ddb0e4bba4 ("iio: Add AS3935 lightning sensor support")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Matt Ranostay <mranostay@gmail.com>
---
 drivers/iio/proximity/as3935.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/drivers/iio/proximity/as3935.c b/drivers/iio/proximity/as3935.c
index 67891ce2bd09..e4a6d0de47f4 100644
--- a/drivers/iio/proximity/as3935.c
+++ b/drivers/iio/proximity/as3935.c
@@ -65,7 +65,7 @@  struct as3935_state {
 		u8 chan;
 		s64 timestamp __aligned(8);
 	} scan;
-	u8 buf[2] ____cacheline_aligned;
+	u8 buf[2] __aligned(IIO_ALIGN);
 };
 
 static const struct iio_chan_spec as3935_channels[] = {