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usb: gadget: u_ether: fix dereference after null check coverify warning

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dev->port_usb is checked for null pointer at above code, so dev->port_usb
might be null, fix it by adding null pointer check.

Signed-off-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Peter Chen 2016-07-01 15:33:29 +08:00 committed by Felipe Balbi
parent c526c62d56
commit 88c09eacf5
1 changed files with 2 additions and 1 deletions
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3
drivers/usb/gadget/function/u_ether.c
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@ -556,7 +556,8 @@ static netdev_tx_t eth_start_xmit(struct sk_buff *skb,
/* Multi frame CDC protocols may store the frame for
* later which is not a dropped frame.
*/
if (dev->port_usb->supports_multi_frame)
if (dev->port_usb &&
dev->port_usb->supports_multi_frame)
goto multiframe;
goto drop;
}