tree: https://android.googlesource.com/kernel/goldfish android-3.18 head: e4742bb317218e1c75c86aa765e50cdd06d2c007 commit: 871223edfb881c501de99186b62925b5ed5457d3 [125/187] usb: renesas_usbhs: gadget: disable all eps when the driver stops config: x86_64-allyesconfig (attached as .config) compiler: gcc-5 (Ubuntu 5.5.0-12ubuntu1) 5.5.0 20171010 reproduce (this is a W=1 build): git remote add android-goldfish https://android.googlesource.com/kernel/goldfish git fetch --no-tags android-goldfish android-3.18 git checkout 871223edfb881c501de99186b62925b5ed5457d3 # save the attached .config to linux build tree make W=1 ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): drivers/usb/renesas_usbhs/mod_gadget.c: In function 'usbhsg_ep_disable': int ret = 0; ^ vim +/ret +639 drivers/usb/renesas_usbhs/mod_gadget.c 633 634 static int usbhsg_ep_disable(struct usb_ep *ep) 635 { 636 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep); 637 struct usbhs_pipe *pipe; 638 unsigned long flags; 640 641 spin_lock_irqsave(&uep->lock, flags); 642 pipe = usbhsg_uep_to_pipe(uep); 643 if (!pipe) { 644 ret = -EINVAL; 645 goto out; 646 } 647 648 usbhsg_pipe_disable(uep); 649 usbhs_pipe_free(pipe); 650 651 uep->pipe->mod_private = NULL; 652 uep->pipe = NULL; 653 654 out: 655 spin_unlock_irqrestore(&uep->lock, flags); 656 657 return 0; 658 } 659 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org