usb: gadget: net2280: Fix NULL pointer dereference
When DEBUG is enabled driver->driver.name is accessed, but driver can be NULL [ 174.411689] BUG: unable to handle kernel NULL pointer dereference at 0000000000000040 [ 174.429043] RIP: 0010:[<ffffffffa0131ca3>] [<ffffffffa0131ca3>] net2280_stop+0xa3/0x100 [net2280] [ 174.457910] Call Trace: [ 174.459503] [<ffffffffa00dd92a>] usb_gadget_remove_driver+0x5a/0xb0 [udc_core] [ 174.462693] [<ffffffffa00ddd84>] usb_del_gadget_udc+0xb4/0x110 [udc_core] [ 174.464316] [<ffffffffa012e2bf>] net2280_remove+0x2f/0x1c0 [net2280] Signed-off-by: NRicardo Ribalda Delgado <ricardo.ribalda@gmail.com> Signed-off-by: NFelipe Balbi <balbi@ti.com>
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