linux-kernel - [PATCH AUTOSEL 5.4 047/130] ARM: OMAP2+: Fix memleak in omap2xxx_clkt_vps

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Date:   Tue, 22 Dec 2020 21:16:50 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Youling Tang <tangyouling@...ngson.cn>,
        Tony Lindgren <tony@...mide.com>,
        Sasha Levin <sashal@...nel.org>, linux-omap@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: [PATCH AUTOSEL 5.4 047/130] ARM: OMAP2+: Fix memleak in omap2xxx_clkt_vps_init

From: Youling Tang <tangyouling@...ngson.cn>

[ Upstream commit 3c5902d270edb6ccc3049acfe5d3e96653c87dcd ]

If the clk_register fails, we should free hw before function returns to
prevent memleak.

Signed-off-by: Youling Tang <tangyouling@...ngson.cn>
Signed-off-by: Tony Lindgren <tony@...mide.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 arch/arm/mach-omap2/clkt2xxx_virt_prcm_set.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm/mach-omap2/clkt2xxx_virt_prcm_set.c b/arch/arm/mach-omap2/clkt2xxx_virt_prcm_set.c
index 2a3e72286d3ab..70892b3da28d3 100644
--- a/arch/arm/mach-omap2/clkt2xxx_virt_prcm_set.c
+++ b/arch/arm/mach-omap2/clkt2xxx_virt_prcm_set.c
@@ -244,6 +244,12 @@ void omap2xxx_clkt_vps_init(void)
 	hw->hw.init = &init;
 
 	clk = clk_register(NULL, &hw->hw);
+	if (IS_ERR(clk)) {
+		printk(KERN_ERR "Failed to register clock\n");
+		kfree(hw);
+		return;
+	}
+
 	clkdev_create(clk, "cpufreq_ck", NULL);
 	return;
 cleanup:
-- 
2.27.0