Re: [PATCH 02/92] iio: accel: adxl313: Fix alignment for DMA safety

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On 5/3/22 10:58, Jonathan Cameron wrote:
From: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>

____cacheline_aligned is insufficient guarantee for non-coherent DMA.
Switch to the update IIO_ALIGN definition.

Fixes: 636d44633039 ("iio: accel: Add driver support for ADXL313")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
---
  drivers/iio/accel/adxl313_core.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iio/accel/adxl313_core.c b/drivers/iio/accel/adxl313_core.c
index 9e4193e64765..508fccbd4347 100644
--- a/drivers/iio/accel/adxl313_core.c
+++ b/drivers/iio/accel/adxl313_core.c
@@ -46,7 +46,7 @@ EXPORT_SYMBOL_NS_GPL(adxl313_writable_regs_table, IIO_ADXL313);
  struct adxl313_data {
  	struct regmap	*regmap;
  	struct mutex	lock; /* lock to protect transf_buf */
-	__le16		transf_buf ____cacheline_aligned;
+	__le16		transf_buf __aligned(IIO_ALIGN);
How about making __aligned(IIO_ALIGN) a macro in case we ever want to change it.
  };
static const int adxl313_odr_freqs[][2] = {





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