FAILED: patch "[PATCH] iio: adc: adi-axi-adc: Initialize state mutex" failed to apply to 6.12-stable tree

The patch below does not apply to the 6.12-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 <[email protected]>.

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-6.12.y
git checkout FETCH_HEAD
git cherry-pick -x 549b71ce050637dd32678371ad76c445a2f8c9aa
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<[email protected]>' --in-reply-to '2026100609-cape-bust-86da@gregkh' --subject-prefix 'PATCH 6.12.y' 'HEAD^..'

Possible dependencies:

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 549b71ce050637dd32678371ad76c445a2f8c9aa Mon Sep 17 00:00:00 2001
From: Janani Sunil <[email protected]>
Date: Thu, 13 Aug 2026 15:56:56 +0200
Subject: [PATCH] iio: adc: adi-axi-adc: Initialize state mutex

The AXI ADC register access paths serialize transactions with st->lock, but probe does not initialize it. Initialize the mutex before registering the backend.

index 589f03618ecf..fc7cc92b35f0 100644
@@ -714,6 +714,10 @@ static int adi_axi_adc_probe(struct platform_device *pdev)
 	if (!st)
 		return -ENOMEM;
 
+	ret = devm_mutex_init(dev, &st->lock);
+	if (ret)
+		return ret;
+
 	base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(base))
 		return PTR_ERR(base);