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Date:   Wed, 13 Feb 2019 22:55:46 +0800
From:   Peng Hao <>
        Peng Hao <>
Subject: [PATCH]  arm/mach-at91/pm : fix possible object reference leak

of_find_device_by_node() takes a reference to the struct device
when it finds a match via get_device. When returning error we should
call put_device.

Signed-off-by: Peng Hao <>
 arch/arm/mach-at91/pm.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c
index 51e808a..70fadb7 100644
--- a/arch/arm/mach-at91/pm.c
+++ b/arch/arm/mach-at91/pm.c
@@ -621,6 +621,7 @@ static int __init at91_pm_backup_init(void)
+	put_device(&pdev->dev);
 	pm_data.sfrbu = NULL;
 	return ret;

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