linux-kernel - [PATCH v2] watchdog: at91sam9_wdt: use devm_request_irq to avoid missing free

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Message-ID: <20221116094950.3141943-1-ruanjinjie@huawei.com>
Date:   Wed, 16 Nov 2022 17:49:50 +0800
From:   ruanjinjie <ruanjinjie@...wei.com>
To:     <wim@...ux-watchdog.org>, <linux@...ck-us.net>,
        <nicolas.ferre@...rochip.com>, <alexandre.belloni@...tlin.com>,
        <claudiu.beznea@...rochip.com>, <bbrezillon@...nel.org>,
        <linux-watchdog@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
CC:     <ruanjinjie@...wei.com>
Subject: [PATCH v2] watchdog: at91sam9_wdt: use devm_request_irq to avoid missing free_irq() in error path

free_irq() is missing in case of error in at91_wdt_init(), use
devm_request_irq to fix that.

Fixes: 5161b31dc39a ("watchdog: at91sam9_wdt: better watchdog support")
Signed-off-by: ruanjinjie <ruanjinjie@...wei.com>
---
 drivers/watchdog/at91sam9_wdt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/watchdog/at91sam9_wdt.c b/drivers/watchdog/at91sam9_wdt.c
index 292b5a1ca831..b9e8572c707d 100644
--- a/drivers/watchdog/at91sam9_wdt.c
+++ b/drivers/watchdog/at91sam9_wdt.c
@@ -206,7 +206,7 @@ static int at91_wdt_init(struct platform_device *pdev, struct at91wdt *wdt)
 			 "min heartbeat and max heartbeat might be too close for the system to handle it correctly\n");
 
 	if ((tmp & AT91_WDT_WDFIEN) && wdt->irq) {
-		err = request_irq(wdt->irq, wdt_interrupt,
+		err = devm_request_irq(dev, wdt->irq, wdt_interrupt,
 				  IRQF_SHARED | IRQF_IRQPOLL |
 				  IRQF_NO_SUSPEND,
 				  pdev->name, wdt);
-- 
2.25.1