linux-kernel - [PATCH v2] drivers/clk/clk: check return value of clk_pm_runtime

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Message-Id: <20220903224125.2276690-1-floridsleeves@gmail.com>
Date:   Sat,  3 Sep 2022 15:41:25 -0700
From:   Li Zhong <floridsleeves@...il.com>
To:     linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org
Cc:     mturquette@...libre.com, sboyd@...nel.org,
        Li Zhong <floridsleeves@...il.com>
Subject: [PATCH v2] drivers/clk/clk: check return value of clk_pm_runtime_get()

clk_pm_runtime_get() could fail. Check the return status.

Signed-off-by: Li Zhong <floridsleeves@...il.com>
---
 drivers/clk/clk.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index 7fc191c15507..09353f7bf052 100644
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -2981,8 +2981,12 @@ static void clk_summary_show_subtree(struct seq_file *s, struct clk_core *c,
 				     int level)
 {
 	struct clk_core *child;
+	int ret;
+    
+    ret = clk_pm_runtime_get(c);
+    if (ret)
+        return;
 
-	clk_pm_runtime_get(c);
 	clk_summary_show_one(s, c, level);
 	clk_pm_runtime_put(c);
 
-- 
2.25.1