linux-kernel - [PATCH v2] ep93xx: clock: Do not return the address of the freed memory

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Message-Id: <20220517073946.1339333-1-zhanggenjian@kylinos.cn>
Date:   Tue, 17 May 2022 15:39:46 +0800
From:   Genjian Zhang <zhanggenjian123@...il.com>
To:     hsweeten@...ionengravers.com, alexander.sverdlin@...il.com,
        linux@...linux.org.uk
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        zhanggenjian123@...il.com, Genjian Zhang <zhanggenjian@...inos.cn>
Subject: [PATCH v2] ep93xx: clock: Do not return the address of the freed memory

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>
---
 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 4fa6ea5461b7..85a496ddc619 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;
 }
 
-- 
2.25.1