This is a note to let you know that I've just added the patch titled
iio: accel: adxl355: 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-adxl355-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 b2f87bd9a949a8a81c49a0f0e8278de90107a502
Author: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Date: Sun May 8 18:55:43 2022 +0100
iio: accel: adxl355: Fix alignment for DMA safety
[ Upstream commit 46403dcf3a7cbd24b86f809fd79962f4d6b137c5 ]
____cacheline_aligned is insufficient guarantee for non-coherent DMA.
Switch to the updated IIO_DMA_MINALIGN definition.
Fixes: 327a0eaf19d53 ("iio: accel: adxl355: Add triggered buffer support")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Cc: Puranjay Mohan <puranjay12@xxxxxxxxx>
Acked-by: Nuno Sá <nuno.sa@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20220508175712.647246-4-jic23@xxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/iio/accel/adxl355_core.c b/drivers/iio/accel/adxl355_core.c
index e9c10c8c32f0..2dfe780d6144 100644
--- a/drivers/iio/accel/adxl355_core.c
+++ b/drivers/iio/accel/adxl355_core.c
@@ -177,7 +177,7 @@ struct adxl355_data {
u8 buf[14];
s64 ts;
} buffer;
- } ____cacheline_aligned;
+ } __aligned(IIO_DMA_MINALIGN);
};
static int adxl355_set_op_mode(struct adxl355_data *data,
