linux-kernel - [PATCH] usbnet: ipheth: Remove unnecessary NULL pointer check

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Date:   Tue, 30 Apr 2019 17:35:33 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     "David S . Miller" <davem@...emloft.net>
Cc:     linux-usb@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, Guenter Roeck <linux@...ck-us.net>,
        "Gustavo A . R . Silva" <garsilva@...eddedor.com>
Subject: [PATCH] usbnet: ipheth: Remove unnecessary NULL pointer check

ipheth_carrier_set() is called from two locations. In
ipheth_carrier_check_work(), its parameter 'dev' is set with
container_of(work, ...) and can not be NULL. In ipheth_open(),
dev is extracted from netdev_priv(net) and dereferenced before
the call to ipheth_carrier_set(). The NULL pointer check of dev
in ipheth_carrier_set() is therefore unnecessary and can be removed.

Cc: Gustavo A. R. Silva <garsilva@...eddedor.com>
Signed-off-by: Guenter Roeck <linux@...ck-us.net>
---
 drivers/net/usb/ipheth.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/net/usb/ipheth.c b/drivers/net/usb/ipheth.c
index a01a71a7e48d..c247aed2dceb 100644
--- a/drivers/net/usb/ipheth.c
+++ b/drivers/net/usb/ipheth.c
@@ -241,8 +241,6 @@ static int ipheth_carrier_set(struct ipheth_device *dev)
 	struct usb_device *udev;
 	int retval;
 
-	if (!dev)
-		return 0;
 	if (!dev->confirmed_pairing)
 		return 0;
 
-- 
2.7.4