linux-kernel - [PATCH 3.16 039/132] powerpc/83xx: Add missing of_node_put() after of_device_is

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Message-ID: <lsq.1568989415.230046658@decadent.org.uk>
Date:   Fri, 20 Sep 2019 15:23:35 +0100
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org, Denis Kirjanov <kda@...ux-powerpc.org>,
        "Mukesh Ojha" <mojha@...eaurora.org>,
        "Michael Ellerman" <mpe@...erman.id.au>,
        "Julia Lawall" <Julia.Lawall@...6.fr>
Subject: [PATCH 3.16 039/132] powerpc/83xx: Add missing of_node_put()
 after of_device_is_available()

3.16.74-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Julia Lawall <Julia.Lawall@...6.fr>

commit 4df2cb633b5b22ba152511f1a55e718efca6c0d9 upstream.

Add an of_node_put() when a tested device node is not available.

Fixes: c026c98739c7e ("powerpc/83xx: Do not configure or probe disabled FSL DR USB controllers")
Signed-off-by: Julia Lawall <Julia.Lawall@...6.fr>
Reviewed-by: Mukesh Ojha <mojha@...eaurora.org>
Signed-off-by: Michael Ellerman <mpe@...erman.id.au>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 arch/powerpc/platforms/83xx/usb.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/arch/powerpc/platforms/83xx/usb.c
+++ b/arch/powerpc/platforms/83xx/usb.c
@@ -222,8 +222,10 @@ int mpc837x_usb_cfg(void)
 	int ret = 0;
 
 	np = of_find_compatible_node(NULL, NULL, "fsl-usb2-dr");
-	if (!np || !of_device_is_available(np))
+	if (!np || !of_device_is_available(np)) {
+		of_node_put(np);
 		return -ENODEV;
+	}
 	prop = of_get_property(np, "phy_type", NULL);
 
 	if (!prop || (strcmp(prop, "ulpi") && strcmp(prop, "serial"))) {