From: Wen Yang wen.yang99@zte.com.cn
commit 629266bf7229cd6a550075f5961f95607b823b59 upstream.
The call to of_get_next_child returns a node pointer with refcount incremented thus it must be explicitly decremented after the last usage.
Detected by coccinelle with warnings like: arch/arm/mach-exynos/firmware.c:201:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 193, but without a corresponding object release within this function.
Cc: stable@vger.kernel.org Signed-off-by: Wen Yang wen.yang99@zte.com.cn Signed-off-by: Krzysztof Kozlowski krzk@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- arch/arm/mach-exynos/firmware.c | 1 + arch/arm/mach-exynos/suspend.c | 2 ++ 2 files changed, 3 insertions(+)
--- a/arch/arm/mach-exynos/firmware.c +++ b/arch/arm/mach-exynos/firmware.c @@ -205,6 +205,7 @@ void __init exynos_firmware_init(void) return;
addr = of_get_address(nd, 0, NULL, NULL); + of_node_put(nd); if (!addr) { pr_err("%s: No address specified.\n", __func__); return; --- a/arch/arm/mach-exynos/suspend.c +++ b/arch/arm/mach-exynos/suspend.c @@ -715,8 +715,10 @@ void __init exynos_pm_init(void)
if (WARN_ON(!of_find_property(np, "interrupt-controller", NULL))) { pr_warn("Outdated DT detected, suspend/resume will NOT work\n"); + of_node_put(np); return; } + of_node_put(np);
pm_data = (const struct exynos_pm_data *) match->data;