Hi Oliver, FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 35e884f89df4c48566d745dc5a97a0d058d04263 commit: dc3d8f85bb571c3640ebba24b82a527cf2cb3f24 powerpc/powernv/pci: Re-work bus PE configuration date: 5 weeks ago config: powerpc64-randconfig-r035-20200705 (attached as .config) compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project f804bd586ee58199db4cfb2da8e9ef067425900b) 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 powerpc64 cross compiling tool for clang build # apt-get install binutils-powerpc64-linux-gnu git checkout dc3d8f85bb571c3640ebba24b82a527cf2cb3f24 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <l...@intel.com> All warnings (new ones prefixed by >>): arch/powerpc/platforms/powernv/pci-ioda.c:1494:6: warning: no previous prototype for function 'pnv_pci_sriov_disable' [-Wmissing-prototypes] void pnv_pci_sriov_disable(struct pci_dev *pdev) ^ arch/powerpc/platforms/powernv/pci-ioda.c:1494:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void pnv_pci_sriov_disable(struct pci_dev *pdev) ^ static arch/powerpc/platforms/powernv/pci-ioda.c:1604:5: warning: no previous prototype for function 'pnv_pci_sriov_enable' [-Wmissing-prototypes] int pnv_pci_sriov_enable(struct pci_dev *pdev, u16 num_vfs) ^ arch/powerpc/platforms/powernv/pci-ioda.c:1604:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int pnv_pci_sriov_enable(struct pci_dev *pdev, u16 num_vfs) ^ static arch/powerpc/platforms/powernv/pci-ioda.c:1719:5: warning: no previous prototype for function 'pnv_pcibios_sriov_disable' [-Wmissing-prototypes] int pnv_pcibios_sriov_disable(struct pci_dev *pdev) ^ arch/powerpc/platforms/powernv/pci-ioda.c:1719:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int pnv_pcibios_sriov_disable(struct pci_dev *pdev) ^ static arch/powerpc/platforms/powernv/pci-ioda.c:1728:5: warning: no previous prototype for function 'pnv_pcibios_sriov_enable' [-Wmissing-prototypes] int pnv_pcibios_sriov_enable(struct pci_dev *pdev, u16 num_vfs) ^ arch/powerpc/platforms/powernv/pci-ioda.c:1728:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int pnv_pcibios_sriov_enable(struct pci_dev *pdev, u16 num_vfs) ^ static >> arch/powerpc/platforms/powernv/pci-ioda.c:1889:13: warning: function >> 'pnv_ioda_setup_bus_dma' is not needed and will not be emitted >> [-Wunneeded-internal-declaration] static void pnv_ioda_setup_bus_dma(struct pnv_ioda_pe *pe, struct pci_bus *bus) ^ 5 warnings generated. vim +/pnv_ioda_setup_bus_dma +1889 arch/powerpc/platforms/powernv/pci-ioda.c fe7e85c6f5ff63 Gavin Shan 2014-09-30 1888 5eada8a3f087df Alexey Kardashevskiy 2018-12-19 @1889 static void pnv_ioda_setup_bus_dma(struct pnv_ioda_pe *pe, struct pci_bus *bus) 74251fe21bfa93 Benjamin Herrenschmidt 2013-07-01 1890 { 74251fe21bfa93 Benjamin Herrenschmidt 2013-07-01 1891 struct pci_dev *dev; 74251fe21bfa93 Benjamin Herrenschmidt 2013-07-01 1892 74251fe21bfa93 Benjamin Herrenschmidt 2013-07-01 1893 list_for_each_entry(dev, &bus->devices, bus_list) { b348aa65297659 Alexey Kardashevskiy 2015-06-05 1894 set_iommu_table_base(&dev->dev, pe->table_group.tables[0]); 0617fc0ca412b5 Christoph Hellwig 2019-02-13 1895 dev->dev.archdata.dma_offset = pe->tce_bypass_base; dff4a39e880062 Gavin Shan 2014-07-15 1896 5c89a87d13d168 Alexey Kardashevskiy 2015-06-18 1897 if ((pe->flags & PNV_IODA_PE_BUS_ALL) && dev->subordinate) 5eada8a3f087df Alexey Kardashevskiy 2018-12-19 1898 pnv_ioda_setup_bus_dma(pe, dev->subordinate); 74251fe21bfa93 Benjamin Herrenschmidt 2013-07-01 1899 } 74251fe21bfa93 Benjamin Herrenschmidt 2013-07-01 1900 } 74251fe21bfa93 Benjamin Herrenschmidt 2013-07-01 1901 :::::: The code at line 1889 was first introduced by commit :::::: 5eada8a3f087df74af1c2797770a3e2249374fe1 powerpc/iommu_api: Move IOMMU groups setup to a single place :::::: TO: Alexey Kardashevskiy <a...@ozlabs.ru> :::::: CC: Michael Ellerman <m...@ellerman.id.au> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
.config.gz
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