linux-kernel - [PATCH] parport: fix possible memory leak in parport_gsc_probe

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Date:	Mon, 3 Sep 2012 18:09:53 +0800
From:	Wei Yongjun <weiyj.lk@...il.com>
To:	gregkh@...e.de, willy@...isc-linux.org, kyle@...isc-linux.org
Cc:	yongjun_wei@...ndmicro.com.cn, linux-kernel@...r.kernel.org
Subject: [PATCH] parport: fix possible memory leak in parport_gsc_probe_port()

From: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>

ops has been allocated in this function and should be freed
before leaving from the error handling cases.

spatch with a semantic match is used to found this problem.
(http://coccinelle.lip6.fr/)

Signed-off-by: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>
---
 drivers/parport/parport_gsc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/parport/parport_gsc.c b/drivers/parport/parport_gsc.c
index 5d6de38..352f961 100644
--- a/drivers/parport/parport_gsc.c
+++ b/drivers/parport/parport_gsc.c
@@ -271,6 +271,7 @@ struct parport *__devinit parport_gsc_probe_port (unsigned long base,
 	if (!parport_SPP_supported (p)) {
 		/* No port. */
 		kfree (priv);
+		kfree(ops);
 		return NULL;
 	}
 	parport_PS2_supported (p);


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