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From:   Wen Yang <wen.yang99@zte.com.cn>
To:     linux-kernel@vger.kernel.org
Cc:     wang.yi59@zte.com.cn, Wen Yang <wen.yang99@zte.com.cn>,
        Simon Horman <horms@verge.net.au>,
        Magnus Damm <magnus.damm@gmail.com>,
        Russell King <linux@armlinux.org.uk>,
        linux-renesas-soc@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 08/15] ARM: shmobile: fix a leaked reference by adding missing of_node_put
Date:   Tue, 5 Mar 2019 19:33:59 +0800
Message-Id: <1551785646-46173-8-git-send-email-wen.yang99@zte.com.cn>
In-Reply-To: <1551785646-46173-1-git-send-email-wen.yang99@zte.com.cn>
References: <1551785646-46173-1-git-send-email-wen.yang99@zte.com.cn>
Sender: linux-kernel-owner@vger.kernel.org
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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-shmobile/pm-rcar-gen2.c:77:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 66, but without a corresponding object release within this function.
./arch/arm/mach-shmobile/pm-rcar-gen2.c:85:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 66, but without a corresponding object release within this function.
./arch/arm/mach-shmobile/pm-rcar-gen2.c:90:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 66, but without a corresponding object release within this function.

Signed-off-by: Wen Yang <wen.yang99@zte.com.cn>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Simon Horman <horms@verge.net.au>
Cc: Magnus Damm <magnus.damm@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: linux-renesas-soc@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
v2->v1: add a missing space between "adding" and "missing"

 arch/arm/mach-shmobile/pm-rcar-gen2.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/mach-shmobile/pm-rcar-gen2.c b/arch/arm/mach-shmobile/pm-rcar-gen2.c
index 8c2a205..e84599d 100644
--- a/arch/arm/mach-shmobile/pm-rcar-gen2.c
+++ b/arch/arm/mach-shmobile/pm-rcar-gen2.c
@@ -72,6 +72,7 @@ void __init rcar_gen2_pm_init(void)
 	}
 
 	error = of_address_to_resource(np, 0, &res);
+	of_node_put(np);
 	if (error) {
 		pr_err("Failed to get smp-sram address: %d\n", error);
 		return;
-- 
2.9.5