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

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>

diff --git a/drivers/usb/gadget/function/u_ether.c b/drivers/usb/gadget/function/u_ether.c
index a3f7e7c55ebb18bd5045e27628c81075e484af37..5f562c1ec795718900e5e33de6d6e051eb2bb2ae 100644 (file)
--- a/drivers/usb/gadget/function/u_ether.c
+++ b/drivers/usb/gadget/function/u_ether.c
@@ -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;
                }