This is a note to let you know that I've just added the patch titled pinctrl: stm32: Fix refcount leak in stm32_pctrl_get_irq_domain to the 5.15-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: pinctrl-stm32-fix-refcount-leak-in-stm32_pctrl_get_i.patch and it can be found in the queue-5.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 256d7078300333a755b5997e839de882abc37176 Author: Miaoqian Lin <linmq006@xxxxxxxxx> Date: Mon Jan 2 12:24:56 2023 +0400 pinctrl: stm32: Fix refcount leak in stm32_pctrl_get_irq_domain [ Upstream commit dcef18c8ac40aa85bb339f64c1dd31dd458b06fb ] of_irq_find_parent() returns a node pointer with refcount incremented, We should use of_node_put() on it when not needed anymore. Add missing of_node_put() to avoid refcount leak. Fixes: d86f4d71e42a ("pinctrl: stm32: check irq controller availability at probe") Signed-off-by: Miaoqian Lin <linmq006@xxxxxxxxx> Link: https://lore.kernel.org/r/20230102082503.3944927-1-linmq006@xxxxxxxxx Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/pinctrl/stm32/pinctrl-stm32.c b/drivers/pinctrl/stm32/pinctrl-stm32.c index d3fa8cf0d72c4..abb12a5c3c329 100644 --- a/drivers/pinctrl/stm32/pinctrl-stm32.c +++ b/drivers/pinctrl/stm32/pinctrl-stm32.c @@ -1334,6 +1334,7 @@ static struct irq_domain *stm32_pctrl_get_irq_domain(struct device_node *np) return ERR_PTR(-ENXIO); domain = irq_find_host(parent); + of_node_put(parent); if (!domain) /* domain not registered yet */ return ERR_PTR(-EPROBE_DEFER);