This is a note to let you know that I've just added the patch titled
iio: adc: ad7923: Fix undersized rx buffer.
to my staging git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git
in the staging-linus branch.
The patch will show up in the next release of the linux-next tree
(usually sometime within the next 24 hours during the week.)
The patch will hopefully also be merged in Linus's tree for the
next -rc kernel release.
If you have any questions about this process, please let me know.
>From 01fcf129f61b26d5b3d2d8afb03e770dee271bc8 Mon Sep 17 00:00:00 2001
From: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Date: Sat, 1 May 2021 17:53:14 +0100
Subject: iio: adc: ad7923: Fix undersized rx buffer.
Fixes tag is where the max channels became 8, but timestamp space was missing
before that.
Fixes: 851644a60d20 ("iio: adc: ad7923: Add support for the ad7908/ad7918/ad7928")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Cc: Daniel Junho <djunho@xxxxxxxxx>
Reviewed-by: Andy Shevchenko <andy.shevchenko@xxxxxxxxx>
Link: https://lore.kernel.org/r/20210501165314.511954-3-jic23@xxxxxxxxxx
Cc: <Stable@xxxxxxxxxxxxxxx>
---
drivers/iio/adc/ad7923.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/iio/adc/ad7923.c b/drivers/iio/adc/ad7923.c
index 9a649745cd0a..069b561ee768 100644
--- a/drivers/iio/adc/ad7923.c
+++ b/drivers/iio/adc/ad7923.c
@@ -59,8 +59,10 @@ struct ad7923_state {
/*
* DMA (thus cache coherency maintenance) requires the
* transfer buffers to live in their own cache lines.
+ * Ensure rx_buf can be directly used in iio_push_to_buffers_with_timetamp
+ * Length = 8 channels + 4 extra for 8 byte timestamp
*/
- __be16 rx_buf[4] ____cacheline_aligned;
+ __be16 rx_buf[12] ____cacheline_aligned;
__be16 tx_buf[4];
};
--
2.31.1
