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Date:   Mon, 20 May 2019 10:07:32 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Douglas Anderson <dianders@...omium.org>
Cc:     kbuild-all@...org, Minas Harutyunyan <hminas@...opsys.com>,
        Felipe Balbi <felipe.balbi@...ux.intel.com>, heiko@...ech.de,
        Alan Stern <stern@...land.harvard.edu>,
        Artur Petrosyan <Arthur.Petrosyan@...opsys.com>,
        amstan@...omium.org, linux-rockchip@...ts.infradead.org,
        William Wu <william.wu@...k-chips.com>,
        linux-usb@...r.kernel.org, Stefan Wahren <stefan.wahren@...e.com>,
        Randy Li <ayaka@...lik.info>, zyw@...k-chips.com,
        mka@...omium.org, ryandcase@...omium.org,
        Amelie Delaunay <amelie.delaunay@...com>, jwerner@...omium.org,
        dinguyen@...nsource.altera.com,
        Elaine Zhang <zhangqing@...k-chips.com>,
        Douglas Anderson <dianders@...omium.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [REPOST PATCH v2 2/3] USB: dwc2: Don't turn off the usbphy in
 suspend if wakeup is enabled

Hi Douglas,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on balbi-usb/next]
[also build test ERROR on v5.2-rc1 next-20190517]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Douglas-Anderson/Documentation-dt-bindings-Add-snps-need-phy-for-wake-for-dwc2-USB/20190520-033119
base:   https://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb.git next
config: x86_64-randconfig-h0-05191510 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@...el.com>

All errors (new ones prefixed by >>):

   ld: drivers/usb/dwc2/platform.o: in function `dwc2_can_poweroff_phy':
>> drivers/usb/dwc2/platform.c:545: undefined reference to `usb_wakeup_enabled_descendants'

vim +545 drivers/usb/dwc2/platform.c

   529	
   530	static bool __maybe_unused dwc2_can_poweroff_phy(struct dwc2_hsotg *dwc2)
   531	{
   532		struct usb_device *root_hub = dwc2_hsotg_to_hcd(dwc2)->self.root_hub;
   533	
   534		if (!dwc2->ll_hw_enabled)
   535			return false;
   536	
   537		/* If the controller isn't allowed to wakeup then we can power off. */
   538		if (!device_may_wakeup(dwc2->dev))
   539			return true;
   540	
   541		/*
   542		 * We don't want to power off the PHY if something under the
   543		 * root hub has wakeup enabled.
   544		 */
 > 545		if (usb_wakeup_enabled_descendants(root_hub))
   546			return false;
   547	
   548		/* No reason to keep the PHY powered, so allow poweroff */
   549		return true;
   550	}
   551	

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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