Hi Christian, kernel test robot noticed the following build errors: [auto build test ERROR on drm-misc/drm-misc-next] [also build test ERROR on drm-intel/for-linux-next drm-intel/for-linux-next-fixes tegra/for-next linus/master v6.3-rc6 next-20230412] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Christian-K-nig/drm-debugfs-rework-debugfs-directory-creation-v3/20230412-235231 base: git://anongit.freedesktop.org/drm/drm-misc drm-misc-next patch link: https://lore.kernel.org/r/20230412145206.2483-3-christian.koenig%40amd.com patch subject: [PATCH 2/5] drm/debugfs: rework debugfs directory creation v3 config: hexagon-randconfig-r002-20230409 (https://download.01.org/0day-ci/archive/20230413/202304132344.9oz5dfJI-lkp@xxxxxxxxx/config) compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project 9638da200e00bd069e6dd63604e14cbafede9324) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/intel-lab-lkp/linux/commit/92a7a4f0fd59d427c5827c323692b76095f90efc git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Christian-K-nig/drm-debugfs-rework-debugfs-directory-creation-v3/20230412-235231 git checkout 92a7a4f0fd59d427c5827c323692b76095f90efc # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash drivers/gpu/drm/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Link: https://lore.kernel.org/oe-kbuild-all/202304132344.9oz5dfJI-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): In file included from drivers/gpu/drm/drm_drv.c:38: In file included from include/drm/drm_accel.h:11: In file included from include/drm/drm_file.h:39: In file included from include/drm/drm_prime.h:37: In file included from include/linux/scatterlist.h:9: In file included from arch/hexagon/include/asm/io.h:334: include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __raw_readb(PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu' #define __le16_to_cpu(x) ((__force __u16)(__le16)(x)) ^ In file included from drivers/gpu/drm/drm_drv.c:38: In file included from include/drm/drm_accel.h:11: In file included from include/drm/drm_file.h:39: In file included from include/drm/drm_prime.h:37: In file included from include/linux/scatterlist.h:9: In file included from arch/hexagon/include/asm/io.h:334: include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu' #define __le32_to_cpu(x) ((__force __u32)(__le32)(x)) ^ In file included from drivers/gpu/drm/drm_drv.c:38: In file included from include/drm/drm_accel.h:11: In file included from include/drm/drm_file.h:39: In file included from include/drm/drm_prime.h:37: In file included from include/linux/scatterlist.h:9: In file included from arch/hexagon/include/asm/io.h:334: include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writeb(value, PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ >> drivers/gpu/drm/drm_drv.c:1011:2: error: call to undeclared function 'drm_debugfs_dev_fini'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] drm_debugfs_dev_fini(dev); ^ drivers/gpu/drm/drm_drv.c:1011:2: note: did you mean 'drm_debugfs_dev_init'? include/drm/drm_drv.h:596:13: note: 'drm_debugfs_dev_init' declared here static void drm_debugfs_dev_init(struct drm_device *dev, struct dentry *root) ^ 6 warnings and 1 error generated. vim +/drm_debugfs_dev_fini +1011 drivers/gpu/drm/drm_drv.c 974 975 /** 976 * drm_dev_unregister - Unregister DRM device 977 * @dev: Device to unregister 978 * 979 * Unregister the DRM device from the system. This does the reverse of 980 * drm_dev_register() but does not deallocate the device. The caller must call 981 * drm_dev_put() to drop their final reference. 982 * 983 * A special form of unregistering for hotpluggable devices is drm_dev_unplug(), 984 * which can be called while there are still open users of @dev. 985 * 986 * This should be called first in the device teardown code to make sure 987 * userspace can't access the device instance any more. 988 */ 989 void drm_dev_unregister(struct drm_device *dev) 990 { 991 if (drm_core_check_feature(dev, DRIVER_LEGACY)) 992 drm_lastclose(dev); 993 994 dev->registered = false; 995 996 drm_client_dev_unregister(dev); 997 998 if (drm_core_check_feature(dev, DRIVER_MODESET)) 999 drm_modeset_unregister_all(dev); 1000 1001 if (dev->driver->unload) 1002 dev->driver->unload(dev); 1003 1004 drm_legacy_pci_agp_destroy(dev); 1005 drm_legacy_rmmaps(dev); 1006 1007 remove_compat_control_link(dev); 1008 drm_minor_unregister(dev, DRM_MINOR_ACCEL); 1009 drm_minor_unregister(dev, DRM_MINOR_PRIMARY); 1010 drm_minor_unregister(dev, DRM_MINOR_RENDER); > 1011 drm_debugfs_dev_fini(dev); 1012 } 1013 EXPORT_SYMBOL(drm_dev_unregister); 1014 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
