This is a note to let you know that I've just added the patch titled
iio: ad799x: Fix buffered capture for ad7991/ad7995/ad7999
to the 4.7-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-ad799x-fix-buffered-capture-for-ad7991-ad7995-ad7999.patch
and it can be found in the queue-4.7 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 7d3cc21dab5313a02f2f3ca8164529b828a030d1 Mon Sep 17 00:00:00 2001
From: Lars-Peter Clausen <lars@xxxxxxxxxx>
Date: Mon, 11 Jul 2016 13:54:17 +0200
Subject: iio: ad799x: Fix buffered capture for ad7991/ad7995/ad7999
From: Lars-Peter Clausen <lars@xxxxxxxxxx>
commit 7d3cc21dab5313a02f2f3ca8164529b828a030d1 upstream.
The data buffer for captured mode for the ad799x driver is allocated in the
update_scan_mode() callback. This callback is not set in the iio_info
struct for the ad7791/ad7995/ad7999, which means that the data buffer is
not allocated when a captured transfer is started. As a result the driver
crashes when the first sample is received. To fix this properly set the
update_scan_mode() callback.
Fixes: d8dca33027c1 ("staging:iio:ad799x: Preallocate sample buffer")
Signed-off-by: Lars-Peter Clausen <lars@xxxxxxxxxx>
Signed-off-by: Jonathan Cameron <jic23@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/iio/adc/ad799x.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/iio/adc/ad799x.c
+++ b/drivers/iio/adc/ad799x.c
@@ -533,6 +533,7 @@ static struct attribute_group ad799x_eve
static const struct iio_info ad7991_info = {
.read_raw = &ad799x_read_raw,
.driver_module = THIS_MODULE,
+ .update_scan_mode = ad799x_update_scan_mode,
};
static const struct iio_info ad7993_4_7_8_noirq_info = {
Patches currently in stable-queue which might be from lars@xxxxxxxxxx are
queue-4.7/iio-sw-trigger-fix-config-group-initialization.patch
queue-4.7/iio-core-fix-iio_val_fractional-sign-handling.patch
queue-4.7/iio-ad799x-fix-buffered-capture-for-ad7991-ad7995-ad7999.patch
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