linux-kernel - [PATCH] clk: renesas: Fix memory leak of 'cpg'

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Message-ID: <1649836504-31381-1-git-send-email-baihaowen@meizu.com>
Date:   Wed, 13 Apr 2022 15:55:04 +0800
From:   Haowen Bai <baihaowen@...zu.com>
To:     Geert Uytterhoeven <geert+renesas@...der.be>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>
CC:     Haowen Bai <baihaowen@...zu.com>,
        <linux-renesas-soc@...r.kernel.org>, <linux-clk@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH] clk: renesas: Fix memory leak of 'cpg'

Fix this issue by freeing the cpg when exiting the function in the
error/normal path.

Signed-off-by: Haowen Bai <baihaowen@...zu.com>
---
 drivers/clk/renesas/clk-r8a7740.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/clk/renesas/clk-r8a7740.c b/drivers/clk/renesas/clk-r8a7740.c
index d8190f007a81..f3ddae554fcd 100644
--- a/drivers/clk/renesas/clk-r8a7740.c
+++ b/drivers/clk/renesas/clk-r8a7740.c
@@ -174,7 +174,7 @@ static void __init r8a7740_cpg_clocks_init(struct device_node *np)
 
 	cpg->reg = of_iomap(np, 0);
 	if (WARN_ON(cpg->reg == NULL))
-		return;
+		goto out_free_cpg;
 
 	for (i = 0; i < num_clks; ++i) {
 		const char *name;
@@ -192,6 +192,8 @@ static void __init r8a7740_cpg_clocks_init(struct device_node *np)
 	}
 
 	of_clk_add_provider(np, of_clk_src_onecell_get, &cpg->data);
+out_free_cpg:
+	kfree(cpg);
 }
 CLK_OF_DECLARE(r8a7740_cpg_clks, "renesas,r8a7740-cpg-clocks",
 	       r8a7740_cpg_clocks_init);
-- 
2.7.4