From: Peng Hao peng.hao2@zte.com.cn
[ Upstream commit ba5e60c9b75dec92d4c695b928f69300b17d7686 ]
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.
Reviewed-by: Mukesh Ojha mojha@codeaurora.org Signed-off-by: Peng Hao peng.hao2@zte.com.cn Signed-off-by: Ludovic Desroches ludovic.desroches@microchip.com Signed-off-by: Sasha Levin (Microsoft) sashal@kernel.org --- arch/arm/mach-at91/pm.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c index 51e808adb00c..2a757dcaa1a5 100644 --- a/arch/arm/mach-at91/pm.c +++ b/arch/arm/mach-at91/pm.c @@ -591,13 +591,13 @@ static int __init at91_pm_backup_init(void)
np = of_find_compatible_node(NULL, NULL, "atmel,sama5d2-securam"); if (!np) - goto securam_fail; + goto securam_fail_no_ref_dev;
pdev = of_find_device_by_node(np); of_node_put(np); if (!pdev) { pr_warn("%s: failed to find securam device!\n", __func__); - goto securam_fail; + goto securam_fail_no_ref_dev; }
sram_pool = gen_pool_get(&pdev->dev, NULL); @@ -620,6 +620,8 @@ static int __init at91_pm_backup_init(void) return 0;
securam_fail: + put_device(&pdev->dev); +securam_fail_no_ref_dev: iounmap(pm_data.sfrbu); pm_data.sfrbu = NULL; return ret;