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From:   Miaoqian Lin <linmq006@gmail.com>
To:     Russell King <linux@armlinux.org.uk>,
        Shawn Guo <shawnguo@kernel.org>,
        Sascha Hauer <s.hauer@pengutronix.de>,
        Pengutronix Kernel Team <kernel@pengutronix.de>,
        Fabio Estevam <festevam@gmail.com>,
        NXP Linux Team <linux-imx@nxp.com>,
        Miaoqian Lin <linmq006@gmail.com>,
        Arnd Bergmann <arnd@arndb.de>,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: [PATCH] ARM: imx35: Fix refcount leak in mx35_read_cpu_rev
Date:   Thu, 21 Apr 2022 19:03:44 +0800
Message-Id: <20220421110347.4304-1-linmq006@gmail.com>
Precedence: bulk

The of_find_compatible_node() function returns a node pointer with
refcount incremented, We should use of_node_put() on it when done
Add the missing of_node_put() to release the refcount.

Fixes: f68ea682d1da ("ARM: imx35: Retrieve the IIM base address from devicetree")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
---
 arch/arm/mach-imx/cpu-imx35.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/mach-imx/cpu-imx35.c b/arch/arm/mach-imx/cpu-imx35.c
index 80e7d8ab9f1b..3ae4a3dc44fb 100644
--- a/arch/arm/mach-imx/cpu-imx35.c
+++ b/arch/arm/mach-imx/cpu-imx35.c
@@ -22,6 +22,7 @@ static int mx35_read_cpu_rev(void)
 	np = of_find_compatible_node(NULL, NULL, "fsl,imx35-iim");
 	iim_base = of_iomap(np, 0);
 	BUG_ON(!iim_base);
+	of_node_put(np);
 
 	rev = imx_readl(iim_base + MXC_IIMSREV);
 	switch (rev) {
-- 
2.17.1