linux-kernel - Re: [PATCH v2 2/2] usb: dwc3: core: Support the dwc3 host suspend/resume

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Date:   Mon, 21 Nov 2016 15:37:55 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Baolin Wang <baolin.wang@...aro.org>
Cc:     kbuild-all@...org, mathias.nyman@...el.com, balbi@...nel.org,
        gregkh@...uxfoundation.org, broonie@...nel.org,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        baolin.wang@...aro.org
Subject: Re: [PATCH v2 2/2] usb: dwc3: core: Support the dwc3 host
 suspend/resume

Hi Baolin,

[auto build test ERROR on next-20161117]
[cannot apply to balbi-usb/next usb/usb-testing v4.9-rc6 v4.9-rc5 v4.9-rc4 v4.9-rc6]
[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/Baolin-Wang/usb-host-plat-Enable-xhci-plat-runtime-PM/20161121-143535
config: i386-allmodconfig (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

   drivers/usb/dwc3/host.c: In function 'dwc3_host_suspend':
>> drivers/usb/dwc3/host.c:158:10: error: implicit declaration of function 'pm_children_suspended' [-Werror=implicit-function-declaration]
     while (!pm_children_suspended(xhci) && --cnt > 0)
             ^~~~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors

vim +/pm_children_suspended +158 drivers/usb/dwc3/host.c

   152		int ret, cnt = DWC3_HOST_SUSPEND_COUNT;
   153	
   154		/*
   155		 * We need make sure the children of the xHCI device had been into
   156		 * suspend state, or we will suspend xHCI device failed.
   157		 */
 > 158		while (!pm_children_suspended(xhci) && --cnt > 0)
   159			msleep(DWC3_HOST_SUSPEND_TIMEOUT);
   160	
   161		if (cnt <= 0) {

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