Hi Rafael, [auto build test WARNING on pm/linux-next] [also build test WARNING on next-20170620] [cannot apply to v4.12-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/Rafael-J-Wysocki/PM-Unify-the-handling-of-device-wakeup-settings/20170620-195729 base: https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git linux-next config: x86_64-randconfig-x019-201725 (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 Note: it may well be a FALSE warning. FWIW you are at least aware of it now. http://gcc.gnu.org/wiki/Better_Uninitialized_Warnings All warnings (new ones prefixed by >>): drivers/acpi/device_pm.c: In function '__acpi_pm_device_wakeup': >> drivers/acpi/device_pm.c:735:6: warning: 'error' may be used uninitialized in this function [-Wmaybe-uninitialized] int error; ^~~~~ vim +/error +735 drivers/acpi/device_pm.c 235d81a6 Rafael J. Wysocki 2017-06-12 719 } else if (adev->wakeup.flags.enabled) { dee8370c Rafael J. Wysocki 2012-11-02 720 acpi_disable_gpe(wakeup->gpe_device, wakeup->gpe_number); dee8370c Rafael J. Wysocki 2012-11-02 721 acpi_disable_wakeup_device_power(adev); 235d81a6 Rafael J. Wysocki 2017-06-12 722 adev->wakeup.flags.enabled = 0; dee8370c Rafael J. Wysocki 2012-11-02 723 } dee8370c Rafael J. Wysocki 2012-11-02 724 return 0; dee8370c Rafael J. Wysocki 2012-11-02 725 } dee8370c Rafael J. Wysocki 2012-11-02 726 dee8370c Rafael J. Wysocki 2012-11-02 727 /** 6909f7ad Rafael J. Wysocki 2017-06-19 728 * __acpi_pm_device_wakeup - Enable/disable remote wakeup for given device. 9f7d805b Rafael J. Wysocki 2017-06-19 729 * @dev: Device to enable/disable to generate wakeup events. dee8370c Rafael J. Wysocki 2012-11-02 730 * @enable: Whether to enable or disable the wakeup functionality. cd7bd02d Rafael J. Wysocki 2012-11-02 731 */ 6909f7ad Rafael J. Wysocki 2017-06-19 732 int __acpi_pm_device_wakeup(struct device *dev, bool enable, bool refcount) a6ae7594 Rafael J. Wysocki 2012-11-02 733 { a6ae7594 Rafael J. Wysocki 2012-11-02 734 struct acpi_device *adev; a6ae7594 Rafael J. Wysocki 2012-11-02 @735 int error; a6ae7594 Rafael J. Wysocki 2012-11-02 736 17653a3e Rafael J. Wysocki 2014-07-23 737 adev = ACPI_COMPANION(dev); 17653a3e Rafael J. Wysocki 2014-07-23 738 if (!adev) { 17653a3e Rafael J. Wysocki 2014-07-23 739 dev_dbg(dev, "ACPI companion missing in %s!\n", __func__); a6ae7594 Rafael J. Wysocki 2012-11-02 740 return -ENODEV; a6ae7594 Rafael J. Wysocki 2012-11-02 741 } a6ae7594 Rafael J. Wysocki 2012-11-02 742 9f7d805b Rafael J. Wysocki 2017-06-19 743 if (!acpi_device_can_wakeup(adev)) :::::: The code at line 735 was first introduced by commit :::::: a6ae7594b1b157e0e7976ed105a7be27d69a5361 ACPI / PM: Move device PM functions related to sleep states :::::: TO: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> :::::: CC: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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