This is a note to let you know that I've just added the patch titled
iio: accel: adxl313: Fix alignment for DMA safety
to the 5.18-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
iio-accel-adxl313-fix-alignment-for-dma-safety.patch
and it can be found in the queue-5.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 235d4da7b5f924ccf2d659155f806487558992aa
Author: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Date: Sun May 8 18:55:42 2022 +0100
iio: accel: adxl313: Fix alignment for DMA safety
[ Upstream commit f68a0445ee86e48dafbfdea50163ad6fc6dba268 ]
____cacheline_aligned is insufficient guarantee for non-coherent DMA.
Switch to the updated IIO_DMA_MINALIGN definition.
Fixes: 636d44633039 ("iio: accel: Add driver support for ADXL313")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Acked-by: Nuno Sá <nuno.sa@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20220508175712.647246-3-jic23@xxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/iio/accel/adxl313_core.c b/drivers/iio/accel/adxl313_core.c
index 9e4193e64765..afeef779e1d0 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_DMA_MINALIGN);
};
static const int adxl313_odr_freqs[][2] = {
