linux-kernel - [PATCH 5.17 088/298] ep93xx: clock: Do not return the address of the freed memory

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Date:   Mon, 13 Jun 2022 12:09:42 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Genjian Zhang <zhanggenjian@...inos.cn>,
        Alexander Sverdlin <alexander.sverdlin@...il.com>,
        Arnd Bergmann <arnd@...db.de>, Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.17 088/298] ep93xx: clock: Do not return the address of the freed memory

From: Genjian Zhang <zhanggenjian123@...il.com>

[ Upstream commit 8a7322a3a05f75e8a4902bdf8129aecd37d54fe9 ]

Avoid return freed memory addresses,Modified to the actual error
return value of clk_register().

Fixes: 9645ccc7bd7a ("ep93xx: clock: convert in-place to COMMON_CLK")
Signed-off-by: Genjian Zhang <zhanggenjian@...inos.cn>
Acked-by: Alexander Sverdlin <alexander.sverdlin@...il.com>
Signed-off-by: Arnd Bergmann <arnd@...db.de>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 arch/arm/mach-ep93xx/clock.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/arch/arm/mach-ep93xx/clock.c b/arch/arm/mach-ep93xx/clock.c
index 28e0ae6e890e..00c2db101ce5 100644
--- a/arch/arm/mach-ep93xx/clock.c
+++ b/arch/arm/mach-ep93xx/clock.c
@@ -345,9 +345,10 @@ static struct clk_hw *clk_hw_register_ddiv(const char *name,
 	psc->hw.init = &init;
 
 	clk = clk_register(NULL, &psc->hw);
-	if (IS_ERR(clk))
+	if (IS_ERR(clk)) {
 		kfree(psc);
-
+		return ERR_CAST(clk);
+	}
 	return &psc->hw;
 }
 
@@ -452,9 +453,10 @@ static struct clk_hw *clk_hw_register_div(const char *name,
 	psc->hw.init = &init;
 
 	clk = clk_register(NULL, &psc->hw);
-	if (IS_ERR(clk))
+	if (IS_ERR(clk)) {
 		kfree(psc);
-
+		return ERR_CAST(clk);
+	}
 	return &psc->hw;
 }
 
-- 
2.35.1