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Date: Mon, 15 Aug 2022 20:04:35 +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, Hacash Robot <hacashRobot@...tino.com>, William Dean <williamsukatube@...il.com>, Marek Beh=C3=BAn <kabel@...nel.org>, Guenter Roeck <linux@...ck-us.net>, Wim Van Sebroeck <wim@...ux-watchdog.org>, Sasha Levin <sashal@...nel.org> Subject: [PATCH 5.15 631/779] watchdog: armada_37xx_wdt: check the return value of devm_ioremap() in armada_37xx_wdt_probe() From: William Dean <williamsukatube@...il.com> [ Upstream commit 2d27e52841092e5831dd41f313028c668d816eb0 ] The function devm_ioremap() in armada_37xx_wdt_probe() can fail, so its return value should be checked. Fixes: 54e3d9b518c8a ("watchdog: Add support for Armada 37xx CPU watchdog") Reported-by: Hacash Robot <hacashRobot@...tino.com> Signed-off-by: William Dean <williamsukatube@...il.com> Reviewed-by: Marek Beh=C3=BAn <kabel@...nel.org> Reviewed-by: Guenter Roeck <linux@...ck-us.net> Link: https://lore.kernel.org/r/20220722030938.2925156-1-williamsukatube@163.com Signed-off-by: Guenter Roeck <linux@...ck-us.net> Signed-off-by: Wim Van Sebroeck <wim@...ux-watchdog.org> Signed-off-by: Sasha Levin <sashal@...nel.org> --- drivers/watchdog/armada_37xx_wdt.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/watchdog/armada_37xx_wdt.c b/drivers/watchdog/armada_37xx_wdt.c index 1635f421ef2c..854b1cc723cb 100644 --- a/drivers/watchdog/armada_37xx_wdt.c +++ b/drivers/watchdog/armada_37xx_wdt.c @@ -274,6 +274,8 @@ static int armada_37xx_wdt_probe(struct platform_device *pdev) if (!res) return -ENODEV; dev->reg = devm_ioremap(&pdev->dev, res->start, resource_size(res)); + if (!dev->reg) + return -ENOMEM; /* init clock */ dev->clk = devm_clk_get(&pdev->dev, NULL); -- 2.35.1
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