linux-kernel - [PATCH 4.19 103/639] clk: ti: fix refcount leak in ti_dt_clocks

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Date:   Fri, 24 Jan 2020 10:24:33 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Yangtao Li <tiny.windzz@...il.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.19 103/639] clk: ti: fix refcount leak in ti_dt_clocks_register()

From: Yangtao Li <tiny.windzz@...il.com>

[ Upstream commit 2274d8001fbb5e1942fbcab5ad2eb15553b09ed2 ]

The of_find_compatible_node() returns a node pointer with refcount
incremented, but there is the lack of use of the of_node_put() when
done. Add the missing of_node_put() to release the refcount.

Signed-off-by: Yangtao Li <tiny.windzz@...il.com>
Fixes: 5b385a45e001 ("clk: ti: add support for clkctrl aliases")
Signed-off-by: Stephen Boyd <sboyd@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/clk/ti/clk.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/clk/ti/clk.c b/drivers/clk/ti/clk.c
index 27e0979b31586..0cc87c6ae91c9 100644
--- a/drivers/clk/ti/clk.c
+++ b/drivers/clk/ti/clk.c
@@ -188,9 +188,13 @@ void __init ti_dt_clocks_register(struct ti_dt_clk oclks[])
 			clkdev_add(&c->lk);
 		} else {
 			if (num_args && !has_clkctrl_data) {
-				if (of_find_compatible_node(NULL, NULL,
-							    "ti,clkctrl")) {
+				struct device_node *np;
+
+				np = of_find_compatible_node(NULL, NULL,
+							     "ti,clkctrl");
+				if (np) {
 					has_clkctrl_data = true;
+					of_node_put(np);
 				} else {
 					clkctrl_nodes_missing = true;
 
-- 
2.20.1