linux-kernel - [PATCH] clk: st: Fix memory leak in st_of_quadfs

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Date:   Tue, 22 Nov 2022 21:36:14 +0800
From:   Xiu Jianfeng <xiujianfeng@...wei.com>
To:     <mturquette@...libre.com>, <sboyd@...nel.org>, <windhl@....com>,
        <avolmat@...com>, <patrice.chotard@...s.st.com>
CC:     <linux-clk@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH] clk: st: Fix memory leak in st_of_quadfs_setup()

If st_clk_register_quadfs_pll() fails, @lock should be freed before goto
@err_exit, otherwise will cause meory leak issue, fix it.

Signed-off-by: Xiu Jianfeng <xiujianfeng@...wei.com>
---
 drivers/clk/st/clkgen-fsyn.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/clk/st/clkgen-fsyn.c b/drivers/clk/st/clkgen-fsyn.c
index d820292a381d..40df1db102a7 100644
--- a/drivers/clk/st/clkgen-fsyn.c
+++ b/drivers/clk/st/clkgen-fsyn.c
@@ -1020,9 +1020,10 @@ static void __init st_of_quadfs_setup(struct device_node *np,
 
 	clk = st_clk_register_quadfs_pll(pll_name, clk_parent_name, datac->data,
 			reg, lock);
-	if (IS_ERR(clk))
+	if (IS_ERR(clk)) {
+		kfree(lock);
 		goto err_exit;
-	else
+	} else
 		pr_debug("%s: parent %s rate %u\n",
 			__clk_get_name(clk),
 			__clk_get_name(clk_get_parent(clk)),
-- 
2.17.1