Hi Richard, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on gpio/for-next] [also build test WARNING on v5.7 next-20200529] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Richard-Hsu/gpio-asm28xx-18xx-new-driver/20200601-160444 base: https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio.git for-next config: i386-allyesconfig (attached as .config) compiler: gcc-9 (Debian 9.3.0-13) 9.3.0 reproduce (this is a W=1 build): # save the attached .config to linux build tree make W=1 ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>, old ones prefixed by <<): >> drivers/gpio/gpio-asm28xx-18xx.c:69:6: warning: no previous prototype for 'pci_config_pm_runtime_get' [-Wmissing-prototypes] 69 | void pci_config_pm_runtime_get(struct pci_dev *pdev) | ^~~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/gpio/gpio-asm28xx-18xx.c:91:6: warning: no previous prototype for 'pci_config_pm_runtime_put' [-Wmissing-prototypes] 91 | void pci_config_pm_runtime_put(struct pci_dev *pdev) | ^~~~~~~~~~~~~~~~~~~~~~~~~ vim +/pci_config_pm_runtime_get +69 drivers/gpio/gpio-asm28xx-18xx.c 68 > 69 void pci_config_pm_runtime_get(struct pci_dev *pdev) 70 { 71 struct device *dev = &pdev->dev; 72 struct device *parent = dev->parent; 73 74 if (parent) 75 pm_runtime_get_sync(parent); 76 pm_runtime_get_noresume(dev); 77 /* 78 * pdev->current_state is set to PCI_D3cold during suspending, 79 * so wait until suspending completes 80 */ 81 pm_runtime_barrier(dev); 82 /* 83 * Only need to resume devices in D3cold, because config 84 * registers are still accessible for devices suspended but 85 * not in D3cold. 86 */ 87 if (pdev->current_state == PCI_D3cold) 88 pm_runtime_resume(dev); 89 } 90 > 91 void pci_config_pm_runtime_put(struct pci_dev *pdev) 92 { 93 struct device *dev = &pdev->dev; 94 struct device *parent = dev->parent; 95 96 pm_runtime_put(dev); 97 if (parent) 98 pm_runtime_put_sync(parent); 99 } 100 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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