From: Miaoqian Lin Date: Mon, 23 May 2022 14:55:13 +0000 (+0400) Subject: ARM: exynos: Fix refcount leak in exynos_map_pmu X-Git-Tag: v5.10.127~9 X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=68f28d52e6cbab8dcfa249cac4356d1d0573e868;p=users%2Fdwmw2%2Flinux.git ARM: exynos: Fix refcount leak in exynos_map_pmu commit c4c79525042a4a7df96b73477feaf232fe44ae81 upstream. of_find_matching_node() returns a node pointer with refcount incremented, we should use of_node_put() on it when not need anymore. Add missing of_node_put() to avoid refcount leak. of_node_put() checks null pointer. Fixes: fce9e5bb2526 ("ARM: EXYNOS: Add support for mapping PMU base address via DT") Signed-off-by: Miaoqian Lin Link: https://lore.kernel.org/r/20220523145513.12341-1-linmq006@gmail.com Signed-off-by: Krzysztof Kozlowski Signed-off-by: Greg Kroah-Hartman --- diff --git a/arch/arm/mach-exynos/exynos.c b/arch/arm/mach-exynos/exynos.c index 83d1d1327f96e..1276585f72c53 100644 --- a/arch/arm/mach-exynos/exynos.c +++ b/arch/arm/mach-exynos/exynos.c @@ -149,6 +149,7 @@ static void exynos_map_pmu(void) np = of_find_matching_node(NULL, exynos_dt_pmu_match); if (np) pmu_base_addr = of_iomap(np, 0); + of_node_put(np); } static void __init exynos_init_irq(void)