linux-kernel - Re: Re: [RFC][PATCH v3 3/3] input: i8042: Avoid resetting controller on system suspend/resume

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Date:	Wed, 7 Oct 2015 07:11:42 +0800
From:	kbuild test robot <lkp@...el.com>
To:	"Rafael J. Wysocki" <rjw@...ysocki.net>
Cc:	kbuild-all@...org, Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Linux PM list <linux-pm@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
	Alan Stern <stern@...land.harvard.edu>,
	Daniel Vetter <daniel.vetter@...el.com>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Linux PCI <linux-pci@...r.kernel.org>
Subject: Re: Re: [RFC][PATCH v3 3/3] input: i8042: Avoid resetting controller
 on system suspend/resume

Hi Rafael,

[auto build test ERROR on v4.3-rc4 -- if it's inappropriate base, please ignore]

config: i386-randconfig-i1-201540 (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

   drivers/input/serio/i8042.c: In function 'i8042_pm_suspend':
>> drivers/input/serio/i8042.c:1174:6: error: implicit declaration of function 'pm_suspend_via_firmware' [-Werror=implicit-function-declaration]
     if (pm_suspend_via_firmware())
         ^
   drivers/input/serio/i8042.c: In function 'i8042_pm_resume_noirq':
>> drivers/input/serio/i8042.c:1190:7: error: implicit declaration of function 'pm_resume_via_firmware' [-Werror=implicit-function-declaration]
     if (!pm_resume_via_firmware())
          ^
   cc1: some warnings being treated as errors

vim +/pm_suspend_via_firmware +1174 drivers/input/serio/i8042.c

  1168	 */
  1169	
  1170	static int i8042_pm_suspend(struct device *dev)
  1171	{
  1172		int i;
  1173	
> 1174		if (pm_suspend_via_firmware())
  1175			i8042_controller_reset(true);
  1176	
  1177		/* Set up serio interrupts for system wakeup. */
  1178		for (i = 0; i < I8042_NUM_PORTS; i++) {
  1179			struct serio *serio = i8042_ports[i].serio;
  1180	
  1181			if (serio && device_may_wakeup(&serio->dev))
  1182				enable_irq_wake(i8042_ports[i].irq);
  1183		}
  1184	
  1185		return 0;
  1186	}
  1187	
  1188	static int i8042_pm_resume_noirq(struct device *dev)
  1189	{
> 1190		if (!pm_resume_via_firmware())
  1191			i8042_interrupt(0, NULL);
  1192	
  1193		return 0;

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