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>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/usb/gadget/function/u_ether.c b/drivers/usb/gadget/function/u_ether.c
index a3f7e7c55ebb..5f562c1ec795 100644
--- 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;
                 }