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can: gs_usb: check for kzalloc allocation failure

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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>
This commit is contained in:
Colin Ian King 2015-03-16 22:42:24 +00:00 committed by Marc Kleine-Budde
parent 7e184c2863
commit 37920a74ab
1 changed files with 2 additions and 0 deletions
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2
drivers/net/can/usb/gs_usb.c
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@ -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);