The patch below does not apply to the 6.6-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.
To reproduce the conflict and resubmit, you may use the following commands:
git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.6.y git checkout FETCH_HEAD git cherry-pick -x 61cbfb5368dd50ed0d65ce21d305aa923581db2b # <resolve conflicts, build, test, etc.> git commit -s git send-email --to 'stable@vger.kernel.org' --in-reply-to '2024090914-province-underdone-1eea@gregkh' --subject-prefix 'PATCH 6.6.y' HEAD^..
Possible dependencies:
61cbfb5368dd ("iio: adc: ad7124: fix DT configuration parsing") a6eaf02b8274 ("iio: adc: ad7124: Switch from of specific to fwnode based property handling")
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From 61cbfb5368dd50ed0d65ce21d305aa923581db2b Mon Sep 17 00:00:00 2001 From: Dumitru Ceclan mitrutzceclan@gmail.com Date: Tue, 6 Aug 2024 11:51:33 +0300 Subject: [PATCH] iio: adc: ad7124: fix DT configuration parsing
The cfg pointer is set before reading the channel number that the configuration should point to. This causes configurations to be shifted by one channel. For example setting bipolar to the first channel defined in the DT will cause bipolar mode to be active on the second defined channel.
Fix by moving the cfg pointer setting after reading the channel number.
Fixes: 7b8d045e497a ("iio: adc: ad7124: allow more than 8 channels") Signed-off-by: Dumitru Ceclan dumitru.ceclan@analog.com Reviewed-by: Nuno Sa nuno.sa@analog.com Link: https://patch.msgid.link/20240806085133.114547-1-dumitru.ceclan@analog.com Cc: Stable@vger.kernel.org Signed-off-by: Jonathan Cameron Jonathan.Cameron@huawei.com
diff --git a/drivers/iio/adc/ad7124.c b/drivers/iio/adc/ad7124.c index afb5f4d741e6..108e9ccab1ef 100644 --- a/drivers/iio/adc/ad7124.c +++ b/drivers/iio/adc/ad7124.c @@ -844,8 +844,6 @@ static int ad7124_parse_channel_config(struct iio_dev *indio_dev, st->channels = channels;
device_for_each_child_node_scoped(dev, child) { - cfg = &st->channels[channel].cfg; - ret = fwnode_property_read_u32(child, "reg", &channel); if (ret) return ret; @@ -863,6 +861,7 @@ static int ad7124_parse_channel_config(struct iio_dev *indio_dev, st->channels[channel].ain = AD7124_CHANNEL_AINP(ain[0]) | AD7124_CHANNEL_AINM(ain[1]);
+ cfg = &st->channels[channel].cfg; cfg->bipolar = fwnode_property_read_bool(child, "bipolar");
ret = fwnode_property_read_u32(child, "adi,reference-select", &tmp);