linux-kernel - Re: [PATCH v1] PM / Domains: Keep the pd status during system PM phases

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Message-ID: <201701201002.CUKsSDxw%fengguang.wu@intel.com>
Date:   Fri, 20 Jan 2017 10:11:07 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Elaine Zhang <zhangqing@...k-chips.com>
Cc:     kbuild-all@...org, xf@...k-chips.com, heiko@...ech.de,
        rjw@...ysocki.net, khilman@...nel.org, ulf.hansson@...aro.org,
        pavel@....cz, len.brown@...el.com, gregkh@...uxfoundation.org,
        linux-pm@...r.kernel.org, huangtao@...k-chips.com,
        xxx@...k-chips.com, wxt@...k-chips.com,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Elaine Zhang <zhangqing@...k-chips.com>
Subject: Re: [PATCH v1] PM / Domains: Keep the pd status during system PM
 phases

Hi Elaine,

[auto build test WARNING on pm/linux-next]
[also build test WARNING on v4.10-rc4 next-20170119]
[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/Elaine-Zhang/PM-Domains-Keep-the-pd-status-during-system-PM-phases/20170120-091738
base:   https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git linux-next
config: x86_64-randconfig-x017-201703 (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=x86_64 

All warnings (new ones prefixed by >>):

   drivers/base/power/domain.c: In function 'pm_genpd_suspend_noirq':
>> drivers/base/power/domain.c:885:29: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
         dev->power.wakeup_path && genpd_dev_active_wakeup(genpd, dev))
         ~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/base/power/domain.c: In function 'pm_genpd_resume_noirq':
   drivers/base/power/domain.c:923:29: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
         dev->power.wakeup_path && genpd_dev_active_wakeup(genpd, dev))
         ~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

vim +885 drivers/base/power/domain.c

   869	 *
   870	 * Stop the device and remove power from the domain if all devices in it have
   871	 * been stopped.
   872	 */
   873	static int pm_genpd_suspend_noirq(struct device *dev)
   874	{
   875		struct generic_pm_domain *genpd;
   876		int ret;
   877	
   878		dev_dbg(dev, "%s()\n", __func__);
   879	
   880		genpd = dev_to_genpd(dev);
   881		if (IS_ERR(genpd))
   882			return -EINVAL;
   883	
   884		if (genpd->suspend_power_off ||
 > 885		    dev->power.wakeup_path && genpd_dev_active_wakeup(genpd, dev))
   886			return 0;
   887	
   888		if (genpd->dev_ops.stop && genpd->dev_ops.start) {
   889			ret = pm_runtime_force_suspend(dev);
   890			if (ret)
   891				return ret;
   892		}
   893	

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

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