From 8f11b5ab441d3a80de7f079598a548350d3eed0b Mon Sep 17 00:00:00 2001 From: Wen Yang Date: Tue, 5 Mar 2019 19:32:55 +0800 Subject: [PATCH] ARM: mvebu: fix a leaked reference by adding missing of_node_put 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 the following warnings: ./arch/arm/mach-mvebu/pm-board.c:135:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 88, but without a corresponding object release within this functio Signed-off-by: Wen Yang Cc: Jason Cooper Cc: Andrew Lunn Cc: Gregory Clement Cc: Sebastian Hesselbarth Cc: Russell King Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Gregory CLEMENT --- arch/arm/mach-mvebu/pm-board.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/arch/arm/mach-mvebu/pm-board.c b/arch/arm/mach-mvebu/pm-board.c index db17121d7d63..070552511699 100644 --- a/arch/arm/mach-mvebu/pm-board.c +++ b/arch/arm/mach-mvebu/pm-board.c @@ -79,7 +79,7 @@ static void mvebu_armada_pm_enter(void __iomem *sdram_reg, u32 srcmd) static int __init mvebu_armada_pm_init(void) { struct device_node *np; - struct device_node *gpio_ctrl_np; + struct device_node *gpio_ctrl_np = NULL; int ret = 0, i; if (!of_machine_is_compatible("marvell,axp-gp")) @@ -126,18 +126,23 @@ static int __init mvebu_armada_pm_init(void) goto out; } + if (gpio_ctrl_np) + of_node_put(gpio_ctrl_np); gpio_ctrl_np = args.np; pic_raw_gpios[i] = args.args[0]; } gpio_ctrl = of_iomap(gpio_ctrl_np, 0); - if (!gpio_ctrl) - return -ENOMEM; + if (!gpio_ctrl) { + ret = -ENOMEM; + goto out; + } mvebu_pm_suspend_init(mvebu_armada_pm_enter); out: of_node_put(np); + of_node_put(gpio_ctrl_np); return ret; }