This is a note to let you know that I've just added the patch titled
iio: adc: ti-ads131e08: 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-adc-ti-ads131e08-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 1ddafe8a314a2c88b2a8678a255b21a48ca1b515
Author: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Date: Sun May 8 18:56:15 2022 +0100
iio: adc: ti-ads131e08: Fix alignment for DMA safety
[ Upstream commit 55afdd050c063ae4b8dbd566107a030c00d005fd ]
____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: d935eddd2799 ("iio: adc: Add driver for Texas Instruments ADS131E0x ADC family")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Cc: Tomislav Denis <tomislav.denis@xxxxxxx>
Acked-by: Nuno Sá <nuno.sa@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20220508175712.647246-36-jic23@xxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/iio/adc/ti-ads131e08.c b/drivers/iio/adc/ti-ads131e08.c
index 80a09817c119..32237cacc9a3 100644
--- a/drivers/iio/adc/ti-ads131e08.c
+++ b/drivers/iio/adc/ti-ads131e08.c
@@ -105,7 +105,7 @@ struct ads131e08_state {
s64 ts __aligned(8);
} tmp_buf;
- u8 tx_buf[3] ____cacheline_aligned;
+ u8 tx_buf[3] __aligned(IIO_DMA_MINALIGN);
/*
* Add extra one padding byte to be able to access the last channel
* value using u32 pointer
