FAILED: patch "[PATCH] pmdomain: imx: Fix reference count leak in imx_gpc_probe()" failed to apply to 6.6-stable tree

[<gregkh@linuxfoundation.org>]

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 73cb5f6eafb0ac7aea8cdeb8ff12981aa741d8fb
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable@vger.kernel.org>' --in-reply-to '2026010514-aerospace-cathouse-bd44@gregkh' --subject-prefix 'PATCH 6.6.y' HEAD^..

Possible dependencies:



thanks,

greg k-h

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

From 73cb5f6eafb0ac7aea8cdeb8ff12981aa741d8fb Mon Sep 17 00:00:00 2001
From: Wentao Liang <vulab@iscas.ac.cn>
Date: Thu, 11 Dec 2025 04:02:52 +0000
Subject: [PATCH] pmdomain: imx: Fix reference count leak in imx_gpc_probe()

of_get_child_by_name() returns a node pointer with refcount incremented.
Use the __free() attribute to manage the pgc_node reference, ensuring
automatic of_node_put() cleanup when pgc_node goes out of scope.

This eliminates the need for explicit error handling paths and avoids
reference count leaks.

Fixes: 721cabf6c660 ("soc: imx: move PGC handling to a new GPC driver")
Cc: stable@vger.kernel.org
Signed-off-by: Wentao Liang <vulab@iscas.ac.cn>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

diff --git a/drivers/pmdomain/imx/gpc.c b/drivers/pmdomain/imx/gpc.c
index a34b260274f7..de695f1944ab 100644
--- a/drivers/pmdomain/imx/gpc.c
+++ b/drivers/pmdomain/imx/gpc.c
@@ -402,13 +402,12 @@ static int imx_gpc_old_dt_init(struct device *dev, struct regmap *regmap,
 static int imx_gpc_probe(struct platform_device *pdev)
 {
 	const struct imx_gpc_dt_data *of_id_data = device_get_match_data(&pdev->dev);
-	struct device_node *pgc_node;
+	struct device_node *pgc_node __free(device_node)
+		= of_get_child_by_name(pdev->dev.of_node, "pgc");
 	struct regmap *regmap;
 	void __iomem *base;
 	int ret;
 
-	pgc_node = of_get_child_by_name(pdev->dev.of_node, "pgc");
-
 	/* bail out if DT too old and doesn't provide the necessary info */
 	if (!of_property_present(pdev->dev.of_node, "#power-domain-cells") &&
 	    !pgc_node)