linux-kernel - [PATCH v2] drivers: clk: (clk-nomadik) Add missing of_node

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Message-Id: <20220616032448.3974916-1-windhl@126.com>
Date:   Thu, 16 Jun 2022 11:24:48 +0800
From:   Liang He <windhl@....com>
To:     linus.walleij@...aro.org, mturquette@...libre.com, sboyd@...nel.org
Cc:     linux-arm-kernel@...ts.infradead.org, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org, windhl@....com
Subject: [PATCH v2] drivers: clk: (clk-nomadik) Add missing of_node_put()

In nomadik_src_init, of_find_matching_node() 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: 

 v2: (1) use real name for Sob (2) use goto-label patch style
     (3) use proper subject title
 v1: use two of_node_put() in fail path and normal-return

 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..48d5772b36a5 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);
+	
+output:
+    of_node_put(np);	
 }
 
 /**
-- 
2.25.1