Hi David, [auto build test WARNING on drm-intel/for-linux-next] [also build test WARNING on next-20161117] [cannot apply to v4.9-rc5] [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/David-Weinehall/Resume-time-optimisation/20161118-181301 base: git://anongit.freedesktop.org/drm-intel for-linux-next config: x86_64-randconfig-x009-201646 (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/gpu/drm/i915/intel_runtime_pm.c: In function 'intel_runtime_pm_get_if_in_use': >> drivers/gpu/drm/i915/intel_runtime_pm.c:2660:3: warning: 'return' with no value, in function returning non-void [-Wreturn-type] return; ^~~~~~ drivers/gpu/drm/i915/intel_runtime_pm.c:2654:6: note: declared here bool intel_runtime_pm_get_if_in_use(struct drm_i915_private *dev_priv) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/return +2660 drivers/gpu/drm/i915/intel_runtime_pm.c 2644 /** 2645 * intel_runtime_pm_get_if_in_use - grab a runtime pm reference if device in use 2646 * @dev_priv: i915 device instance 2647 * 2648 * This function grabs a device-level runtime pm reference if the device is 2649 * already in use and ensures that it is powered up. 2650 * 2651 * Any runtime pm reference obtained by this function must have a symmetric 2652 * call to intel_runtime_pm_put() to release the reference again. 2653 */ 2654 bool intel_runtime_pm_get_if_in_use(struct drm_i915_private *dev_priv) 2655 { 2656 struct pci_dev *pdev = dev_priv->drm.pdev; 2657 struct device *kdev = &pdev->dev; 2658 2659 if (atomic_inc_not_zero(&dev_priv->pm.wakeref_count)) > 2660 return; 2661 2662 if (IS_ENABLED(CONFIG_PM)) { 2663 int ret = pm_runtime_get_if_in_use(kdev); 2664 2665 /* 2666 * In cases runtime PM is disabled by the RPM core and we get 2667 * an -EINVAL return value we are not supposed to call this 2668 * function, since the power state is undefined. This applies --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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