linux-kernel - [PATCH 3/3] media: ti-vpe: fix leaked of

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Date:   Fri, 28 Jun 2019 11:01:16 +0800
From:   Wen Yang <wen.yang99@....com.cn>
To:     linux-kernel@...r.kernel.org
Cc:     wang.yi59@....com.cn, Wen Yang <wen.yang99@....com.cn>,
        Benoit Parrot <bparrot@...com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-media@...r.kernel.org
Subject: [PATCH 3/3] media: ti-vpe: fix leaked of_node references

The call to of_get_parent returns a node pointer with refcount
incremented thus it must be explicitly decremented after the last
usage.

Detected by coccinelle with the following warnings:
drivers/media/platform/ti-vpe/cal.c:1621:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 1607, but without a corresponding object release within this function.

Signed-off-by: Wen Yang <wen.yang99@....com.cn>
Cc: Benoit Parrot <bparrot@...com>
Cc: Mauro Carvalho Chehab <mchehab@...nel.org>
Cc: linux-media@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
---
 drivers/media/platform/ti-vpe/cal.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/media/platform/ti-vpe/cal.c b/drivers/media/platform/ti-vpe/cal.c
index 9e86d761..8e19974 100644
--- a/drivers/media/platform/ti-vpe/cal.c
+++ b/drivers/media/platform/ti-vpe/cal.c
@@ -1613,6 +1613,7 @@ of_get_next_port(const struct device_node *parent,
 			}
 			prev = port;
 		} while (!of_node_name_eq(port, "port"));
+		of_node_put(ports);
 	}
 
 	return port;
-- 
2.9.5