netdev - [PATCH 2/2] can: m_can: m_can_class_allocate_dev(): remove impossible error return judgment

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Fri,  5 Feb 2021 15:25:59 +0800
From:   Xulin Sun <xulin.sun@...driver.com>
To:     wg@...ndegger.com, mkl@...gutronix.de
Cc:     dmurphy@...com, sriram.dash@...sung.com, kuba@...nel.org,
        davem@...emloft.net, linux-can@...r.kernel.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        xulin.sun@...driver.com, xulinsun@...il.com
Subject: [PATCH 2/2] can: m_can: m_can_class_allocate_dev(): remove impossible error return judgment

If the previous can_net device has been successfully allocated, its
private data structure is impossible to be empty, remove this redundant
error return judgment. Otherwise, memory leaks for alloc_candev() will
be triggered.

Signed-off-by: Xulin Sun <xulin.sun@...driver.com>
---
 drivers/net/can/m_can/m_can.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/drivers/net/can/m_can/m_can.c b/drivers/net/can/m_can/m_can.c
index 02c5795b7393..042940088d41 100644
--- a/drivers/net/can/m_can/m_can.c
+++ b/drivers/net/can/m_can/m_can.c
@@ -1797,11 +1797,6 @@ struct m_can_classdev *m_can_class_allocate_dev(struct device *dev)
 	}
 
 	class_dev = netdev_priv(net_dev);
-	if (!class_dev) {
-		dev_err(dev, "Failed to init netdev cdevate");
-		goto out;
-	}
-
 	class_dev->net = net_dev;
 	class_dev->dev = dev;
 	SET_NETDEV_DEV(net_dev, dev);
-- 
2.17.1