Hi Thomas, [FYI, it's a private test report for your RFC patch.] [auto build test WARNING on pci/next] [also build test WARNING on v5.9-rc1 next-20200820] [cannot apply to tip/x86/core iommu/next] [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/Thomas-Gleixner/x86-PCI-XEN-geni... base: https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git next config: x86_64-randconfig-r036-20200820 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project b587ca93be114d07ec3bf654add97d7872325281) 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 # install x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): In file included from drivers/gpu/drm/i915/i915_scheduler.c:9: In file included from drivers/gpu/drm/i915/i915_drv.h:41: intel_irq_remap_add_device(struct dmar_pci_notify_info *info) { } ^ 1 warning generated. -- In file included from drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c:8: In file included from drivers/gpu/drm/i915/gem/i915_gem_context.h:12: In file included from drivers/gpu/drm/i915/gt/intel_context.h:15: In file included from drivers/gpu/drm/i915/i915_drv.h:41: intel_irq_remap_add_device(struct dmar_pci_notify_info *info) { } ^ drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c:259:19: warning: unused function 'rq_prio' [-Wunused-function] static inline int rq_prio(const struct i915_request *rq) ^ 2 warnings generated. -- In file included from drivers/gpu/drm/i915/gt/intel_workarounds.c:7: In file included from drivers/gpu/drm/i915/i915_drv.h:41: intel_irq_remap_add_device(struct dmar_pci_notify_info *info) { } ^ drivers/gpu/drm/i915/gt/intel_workarounds.c:1331:20: warning: function 'is_nonpriv_flags_valid' is not needed and will not be emitted [-Wunneeded-internal-declaration] static inline bool is_nonpriv_flags_valid(u32 flags) ^ 2 warnings generated. -- In file included from drivers/gpu/drm/i915/i915_active.c:9: In file included from drivers/gpu/drm/i915/gt/intel_context.h:15: In file included from drivers/gpu/drm/i915/i915_drv.h:41: intel_irq_remap_add_device(struct dmar_pci_notify_info *info) { } ^ drivers/gpu/drm/i915/i915_active.c:123:20: warning: unused function 'debug_active_fini' [-Wunused-function] static inline void debug_active_fini(struct i915_active *ref) { } ^ 2 warnings generated. # https://github.com/0day-ci/linux/commit/89c6ea0334d2ff88d8ad5d31f52bc5d0d... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Thomas-Gleixner/x86-PCI-XEN-genirq-Prepare-for-device-MSI/20200821-102235 git checkout 89c6ea0334d2ff88d8ad5d31f52bc5d0d95e0f59 vim +446 include/linux/intel-iommu.h 442 443 void intel_irq_remap_add_device(struct dmar_pci_notify_info *info); 444 #else 445 static inline void 447 #endif 448 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org