This is a note to let you know that I've just added the patch titled
iio: gyro: adis16130: 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-gyro-adis16130-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 9e9c04a7f7aab20df756d69885a18576fecca648
Author: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Date: Sun May 8 18:56:53 2022 +0100
iio: gyro: adis16130: Fix alignment for DMA safety
[ Upstream commit ff3211b2ba9afac80ceb795d148831dd879b30b7 ]
____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: 8e67875141b2 ("staging:iio:gyro: adis16130 cleanup, move to abi and bug fixes.")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Acked-by: Nuno Sá <nuno.sa@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20220508175712.647246-74-jic23@xxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/iio/gyro/adis16130.c b/drivers/iio/gyro/adis16130.c
index b9c952e65b55..33cde9e6fca5 100644
--- a/drivers/iio/gyro/adis16130.c
+++ b/drivers/iio/gyro/adis16130.c
@@ -41,7 +41,7 @@
struct adis16130_state {
struct spi_device *us;
struct mutex buf_lock;
- u8 buf[4] ____cacheline_aligned;
+ u8 buf[4] __aligned(IIO_DMA_MINALIGN);
};
static int adis16130_spi_read(struct iio_dev *indio_dev, u8 reg_addr, u32 *val)
