linux-kernel - [PATCH v2] irqchip/wpcm450: fix memory leak in wpcm450_aic_of

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Message-Id: <20221115092532.1704032-1-weiyongjun@huaweicloud.com>
Date:   Tue, 15 Nov 2022 09:25:32 +0000
From:   Wei Yongjun <weiyongjun@...weicloud.com>
To:     Jonathan Neuschäfer <j.neuschaefer@....net>,
        Thomas Gleixner <tglx@...utronix.de>,
        Marc Zyngier <maz@...nel.org>
Cc:     Wei Yongjun <weiyongjun1@...wei.com>, openbmc@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2] irqchip/wpcm450: fix memory leak in wpcm450_aic_of_init()

From: Wei Yongjun <weiyongjun1@...wei.com>

If of_iomap() failed, 'aic' should be freed before return. Otherwise
there is a memory leak.

Fixes: fead4dd49663 ("irqchip: Add driver for WPCM450 interrupt controller")
Signed-off-by: Wei Yongjun <weiyongjun1@...wei.com>
---
v1 -> v2: fix function name in subject

 drivers/irqchip/irq-wpcm450-aic.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/irqchip/irq-wpcm450-aic.c b/drivers/irqchip/irq-wpcm450-aic.c
index 0dcbeb1a05a1..91df62a64cd9 100644
--- a/drivers/irqchip/irq-wpcm450-aic.c
+++ b/drivers/irqchip/irq-wpcm450-aic.c
@@ -146,6 +146,7 @@ static int __init wpcm450_aic_of_init(struct device_node *node,
 	aic->regs = of_iomap(node, 0);
 	if (!aic->regs) {
 		pr_err("Failed to map WPCM450 AIC registers\n");
+		kfree(aic);
 		return -ENOMEM;
 	}
 
-- 
2.34.1