This is a note to let you know that I've just added the patch titled
iio: frequency: admv1013: 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-frequency-admv1013-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 85f01d9c39411d4a241e9e4637e64b4813de11d5
Author: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Date: Sun May 8 18:56:48 2022 +0100
iio: frequency: admv1013: Fix alignment for DMA safety
[ Upstream commit b3f3f8d264b9be0cb3e50e89e3f8789a948a43bb ]
____cacheline_aligned is an insufficient guarantee for non-coherent DMA
on platforms with 128 byte cachelines above L1. Switch to the updated
IIO_DMA_MINALIGN definition.
Fixes: da35a7b526d9 ("iio: frequency: admv1013: add support for ADMV1013")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Cc: Antoniu Miclaus <antoniu.miclaus@xxxxxxxxxx>
Acked-by: Nuno Sá <nuno.sa@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20220508175712.647246-69-jic23@xxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/iio/frequency/admv1013.c b/drivers/iio/frequency/admv1013.c
index b0e1f6571afb..ed8167271358 100644
--- a/drivers/iio/frequency/admv1013.c
+++ b/drivers/iio/frequency/admv1013.c
@@ -100,7 +100,7 @@ struct admv1013_state {
unsigned int input_mode;
unsigned int quad_se_mode;
bool det_en;
- u8 data[3] ____cacheline_aligned;
+ u8 data[3] __aligned(IIO_DMA_MINALIGN);
};
static int __admv1013_spi_read(struct admv1013_state *st, unsigned int reg,
