linux-kernel - [PATCH v4] clk: nomadik: Add missing of_node

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Date:   Fri, 17 Jun 2022 09:43:08 +0800
From:   Liang He <windhl@....com>
To:     linus.walleij@...aro.org, mturquette@...libre.com, sboyd@...nel.org
Cc:     windhl@....com, linux-arm-kernel@...ts.infradead.org,
        linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v4] clk: nomadik: Add missing of_node_put()

In nomadik_src_init(), of_find_matching_node() will return a node
pointer with refcount incremented. We should use of_node_put() in
fail path or when it is not used anymore.

Signed-off-by: Liang He <windhl@....com>
---
 changelog:
 v4: split v3 into nmadik and tegra
 v3: merge clk 'missing of_node_put()' patches into one commit.
 v2: use Liang He as real name for S-o-b.
 v1: fix the missing of_node_put().
 
 drivers/clk/clk-nomadik.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/clk/clk-nomadik.c b/drivers/clk/clk-nomadik.c
index bad2677e11ae..71fbe687fa7b 100644
--- a/drivers/clk/clk-nomadik.c
+++ b/drivers/clk/clk-nomadik.c
@@ -99,7 +99,7 @@ static void __init nomadik_src_init(void)
 	if (!src_base) {
 		pr_err("%s: must have src parent node with REGS (%pOFn)\n",
 		       __func__, np);
-		return;
+		goto out_put;
 	}
 
 	/* Set all timers to use the 2.4 MHz TIMCLK */
@@ -132,6 +132,9 @@ static void __init nomadik_src_init(void)
 	}
 	writel(val, src_base + SRC_XTALCR);
 	register_reboot_notifier(&nomadik_clk_reboot_notifier);
+
+out_put:
+	of_node_put(np);
 }
 
 /**
-- 
2.25.1