Hi Shivasharan, kernel test robot noticed the following build warnings: [auto build test WARNING on pci/next] [also build test WARNING on next-20240919] [cannot apply to pci/for-linus linus/master v6.11] [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/Shivasharan-S/PCI-portdrv-Enable-reporting-inter-switch-P2P-links/20240919-162626 base: https://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git next patch link: https://lore.kernel.org/r/1726733624-2142-3-git-send-email-shivasharan.srikanteshwara%40broadcom.com patch subject: [PATCH 2/2 v2] PCI/P2PDMA: Modify p2p_dma_distance to detect P2P links config: x86_64-kexec (https://download.01.org/0day-ci/archive/20240920/202409201333.LCx5k41f-lkp@xxxxxxxxx/config) compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240920/202409201333.LCx5k41f-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202409201333.LCx5k41f-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): drivers/pci/pcie/portdrv.c:86: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst * Determine if device supports Inter switch P2P links. >> drivers/pci/pcie/portdrv.c:116: warning: Function parameter or struct member 'a' not described in 'pcie_port_is_p2p_link_available' >> drivers/pci/pcie/portdrv.c:116: warning: Function parameter or struct member 'b' not described in 'pcie_port_is_p2p_link_available' vim +116 drivers/pci/pcie/portdrv.c 106 107 /** 108 * pcie_port_is_p2p_link_available: Determine if a P2P link is available 109 * between the two upstream bridges. The serial number of the two devices 110 * will be compared and if they are same then it is considered that the P2P 111 * link is available. 112 * 113 * Return value: true if inter switch P2P is available, return false otherwise. 114 */ 115 bool pcie_port_is_p2p_link_available(struct pci_dev *a, struct pci_dev *b) > 116 { 117 u64 dsn_a, dsn_b; 118 119 /* 120 * Check if the devices support Inter switch P2P. 121 */ 122 if (!pcie_port_is_p2p_supported(a) || 123 !pcie_port_is_p2p_supported(b)) 124 return false; 125 126 dsn_a = pci_get_dsn(a); 127 if (!dsn_a) 128 return false; 129 130 dsn_b = pci_get_dsn(b); 131 if (!dsn_b) 132 return false; 133 134 if (dsn_a == dsn_b) 135 return true; 136 137 return false; 138 } 139 EXPORT_SYMBOL_GPL(pcie_port_is_p2p_link_available); 140 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
