Hi Parshuram, Thank you for the patch! Yet something to improve: [auto build test ERROR on next-20201127] [cannot apply to linus/master v5.10-rc5 v5.10-rc4 v5.10-rc3 v5.10-rc5] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Parshuram-Thombare/I3C-mastership-handover-support/20201129-222847 base: 6174f05255e65622ff3340257879a4c0f858b0df config: i386-randconfig-a012-20201129 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce (this is a W=1 build): # https://github.com/0day-ci/linux/commit/963007469aa0a76446a899aa8b019802dfc82cb6 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Parshuram-Thombare/I3C-mastership-handover-support/20201129-222847 git checkout 963007469aa0a76446a899aa8b019802dfc82cb6 # 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: kernel test robot All errors (new ones prefixed by >>): drivers/i3c/master/mipi-i3c-hci/core.c: In function 'i3c_hci_probe': >> drivers/i3c/master/mipi-i3c-hci/core.c:760:8: error: implicit declaration of function 'i3c_master_register'; did you mean 'i3c_master_unregister'? [-Werror=implicit-function-declaration] 760 | ret = i3c_master_register(&hci->master, &pdev->dev, | ^~~~~~~~~~~~~~~~~~~ | i3c_master_unregister cc1: some warnings being treated as errors vim +760 drivers/i3c/master/mipi-i3c-hci/core.c 9ad9a52cce2828d Nicolas Pitre 2020-11-11 733 9ad9a52cce2828d Nicolas Pitre 2020-11-11 734 static int i3c_hci_probe(struct platform_device *pdev) 9ad9a52cce2828d Nicolas Pitre 2020-11-11 735 { 9ad9a52cce2828d Nicolas Pitre 2020-11-11 736 struct i3c_hci *hci; 9ad9a52cce2828d Nicolas Pitre 2020-11-11 737 int irq, ret; 9ad9a52cce2828d Nicolas Pitre 2020-11-11 738 9ad9a52cce2828d Nicolas Pitre 2020-11-11 739 hci = devm_kzalloc(&pdev->dev, sizeof(*hci), GFP_KERNEL); 9ad9a52cce2828d Nicolas Pitre 2020-11-11 740 if (!hci) 9ad9a52cce2828d Nicolas Pitre 2020-11-11 741 return -ENOMEM; 9ad9a52cce2828d Nicolas Pitre 2020-11-11 742 hci->base_regs = devm_platform_ioremap_resource(pdev, 0); 9ad9a52cce2828d Nicolas Pitre 2020-11-11 743 if (IS_ERR(hci->base_regs)) 9ad9a52cce2828d Nicolas Pitre 2020-11-11 744 return PTR_ERR(hci->base_regs); 9ad9a52cce2828d Nicolas Pitre 2020-11-11 745 9ad9a52cce2828d Nicolas Pitre 2020-11-11 746 platform_set_drvdata(pdev, hci); 9ad9a52cce2828d Nicolas Pitre 2020-11-11 747 /* temporary for dev_printk's, to be replaced in i3c_master_register */ 9ad9a52cce2828d Nicolas Pitre 2020-11-11 748 hci->master.dev.init_name = dev_name(&pdev->dev); 9ad9a52cce2828d Nicolas Pitre 2020-11-11 749 9ad9a52cce2828d Nicolas Pitre 2020-11-11 750 ret = i3c_hci_init(hci); 9ad9a52cce2828d Nicolas Pitre 2020-11-11 751 if (ret) 9ad9a52cce2828d Nicolas Pitre 2020-11-11 752 return ret; 9ad9a52cce2828d Nicolas Pitre 2020-11-11 753 9ad9a52cce2828d Nicolas Pitre 2020-11-11 754 irq = platform_get_irq(pdev, 0); 9ad9a52cce2828d Nicolas Pitre 2020-11-11 755 ret = devm_request_irq(&pdev->dev, irq, i3c_hci_irq_handler, 9ad9a52cce2828d Nicolas Pitre 2020-11-11 756 0, NULL, hci); 9ad9a52cce2828d Nicolas Pitre 2020-11-11 757 if (ret) 9ad9a52cce2828d Nicolas Pitre 2020-11-11 758 return ret; 9ad9a52cce2828d Nicolas Pitre 2020-11-11 759 9ad9a52cce2828d Nicolas Pitre 2020-11-11 @760 ret = i3c_master_register(&hci->master, &pdev->dev, 9ad9a52cce2828d Nicolas Pitre 2020-11-11 761 &i3c_hci_ops, false); 9ad9a52cce2828d Nicolas Pitre 2020-11-11 762 if (ret) 9ad9a52cce2828d Nicolas Pitre 2020-11-11 763 return ret; 9ad9a52cce2828d Nicolas Pitre 2020-11-11 764 9ad9a52cce2828d Nicolas Pitre 2020-11-11 765 return 0; 9ad9a52cce2828d Nicolas Pitre 2020-11-11 766 } 9ad9a52cce2828d Nicolas Pitre 2020-11-11 767 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org