linux-kernel - [PATCH] usb: host: ohci-ppc-of: Fix refcount leak bug

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Message-Id: <20220617034637.4003115-1-windhl@126.com>
Date:   Fri, 17 Jun 2022 11:46:37 +0800
From:   Liang He <windhl@....com>
To:     stern@...land.harvard.edu, gregkh@...uxfoundation.org
Cc:     windhl@....com, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] usb: host: ohci-ppc-of: Fix refcount leak bug

In ohci_hcd_ppc_of_probe(), of_find_compatible_node() will return
a node pointer with refcount incremented. We should use of_node_put()
when it is not used anymore.

Signed-off-by: Liang He <windhl@....com>
---
 drivers/usb/host/ohci-ppc-of.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/usb/host/ohci-ppc-of.c b/drivers/usb/host/ohci-ppc-of.c
index 1960b8dfdba5..591f675cc930 100644
--- a/drivers/usb/host/ohci-ppc-of.c
+++ b/drivers/usb/host/ohci-ppc-of.c
@@ -166,6 +166,7 @@ static int ohci_hcd_ppc_of_probe(struct platform_device *op)
 				release_mem_region(res.start, 0x4);
 		} else
 			pr_debug("%s: cannot get ehci offset from fdt\n", __FILE__);
+		of_node_put(np);
 	}
 
 	irq_dispose_mapping(irq);
-- 
2.25.1