From 469c0682e03d67d8dc970ecaa70c2d753057c7c0 Mon Sep 17 00:00:00 2001 From: Joe Hattori Date: Sun, 15 Dec 2024 12:01:59 +0900 Subject: [PATCH] pmdomain: imx: gpcv2: fix an OF node reference leak in imx_gpcv2_probe() imx_gpcv2_probe() leaks an OF node reference obtained by of_get_child_by_name(). Fix it by declaring the device node with the __free(device_node) cleanup construct. This bug was found by an experimental static analysis tool that I am developing. Fixes: 03aa12629fc4 ("soc: imx: Add GPCv2 power gating driver") Signed-off-by: Joe Hattori Cc: stable@vger.kernel.org Message-ID: <20241215030159.1526624-1-joe@pf.is.s.u-tokyo.ac.jp> Signed-off-by: Ulf Hansson --- drivers/pmdomain/imx/gpcv2.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/pmdomain/imx/gpcv2.c b/drivers/pmdomain/imx/gpcv2.c index e67ecf99ef84f..9bdb80fd72108 100644 --- a/drivers/pmdomain/imx/gpcv2.c +++ b/drivers/pmdomain/imx/gpcv2.c @@ -1458,12 +1458,12 @@ static int imx_gpcv2_probe(struct platform_device *pdev) .max_register = SZ_4K, }; struct device *dev = &pdev->dev; - struct device_node *pgc_np; + struct device_node *pgc_np __free(device_node) = + of_get_child_by_name(dev->of_node, "pgc"); struct regmap *regmap; void __iomem *base; int ret; - pgc_np = of_get_child_by_name(dev->of_node, "pgc"); if (!pgc_np) { dev_err(dev, "No power domains specified in DT\n"); return -EINVAL; -- 2.39.5