linux-kernel - [PATCH 1/1] solve memory leak for uio

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Date:	Thu, 29 Nov 2012 01:09:50 +0000
From:	Cong Ding <dinggnu@...il.com>
To:	"Hans J. Koch" <hjk@...sjkoch.de>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	linux-kernel@...r.kernel.org, Cong Ding <dinggnu@...il.com>
Subject: [PATCH 1/1] solve memory leak for uio

we have to call kobject_put() to clean up the kobject after function
kobject_init(), kobject_add(), or kobject_uevent() is called. 

Signed-off-by: Cong Ding <dinggnu@...il.com>
---
 drivers/uio/uio.c |    8 +++++---
 1 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c
index 5110f36..40566fd 100644
--- a/drivers/uio/uio.c
+++ b/drivers/uio/uio.c
@@ -317,16 +317,18 @@ static int uio_dev_add_attributes(struct uio_device *idev)
 		ret = kobject_add(&portio->kobj, idev->portio_dir,
 							"port%d", pi);
 		if (ret)
-			goto err_portio;
+			goto err_portio_kobj;
 		ret = kobject_uevent(&portio->kobj, KOBJ_ADD);
 		if (ret)
-			goto err_portio;
+			goto err_portio_kobj;
 	}
 
 	return 0;
 
 err_portio:
-	for (pi--; pi >= 0; pi--) {
+	pi--;
+err_portio_kobj:
+	for (; pi >= 0; pi--) {
 		port = &idev->info->port[pi];
 		portio = port->portio;
 		kobject_put(&portio->kobj);
-- 
1.7.4.5

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