From: Colin Ian King <colin.king@canonical.com>
Date: Mon, 16 Mar 2015 22:42:24 +0000 (+0000)
Subject: can: gs_usb: check for kzalloc allocation failure
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=37920a74abd6fdf0696730ba80a07843a62c9c54;p=openwrt%2Fstaging%2Fblogic.git

can: gs_usb: check for kzalloc allocation failure

smatch detected the following issue:
drivers/net/can/usb/gs_usb.c:904 gs_usb_probe() error:
   potential null dereference 'dev'.  (kzalloc returns null)

Add a check for null return from kzalloc and return -ENOMEM

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
---

diff --git a/drivers/net/can/usb/gs_usb.c b/drivers/net/can/usb/gs_usb.c
index 009acc8641fc..8b4d3e6875eb 100644
--- a/drivers/net/can/usb/gs_usb.c
+++ b/drivers/net/can/usb/gs_usb.c
@@ -901,6 +901,8 @@ static int gs_usb_probe(struct usb_interface *intf, const struct usb_device_id *
 	}
 
 	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+	if (!dev)
+		return -ENOMEM;
 	init_usb_anchor(&dev->rx_submitted);
 
 	atomic_set(&dev->active_channels, 0);