Hi Jim, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 42eb8fdac2fc5d62392dcfcf0253753e821a97b0 commit: e0d072782c734d27f5af062c62266f2598f68542 dma-mapping: introduce DMA range map, supplanting dma_pfn_offset date: 1 year, 2 months ago config: powerpc64-randconfig-r012-20211118 (attached as .config) compiler: powerpc64-linux-gcc (GCC) 11.2.0 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://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout e0d072782c734d27f5af062c62266f2598f68542 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=powerpc 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 >>): drivers/of/unittest.c: In function 'of_unittest_dma_ranges_one.constprop': 910 | } | ^ Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for HOTPLUG_PCI_POWERNV Depends on PCI && HOTPLUG_PCI && PPC_POWERNV && EEH Selected by - OCXL && PPC_POWERNV && PCI && EEH vim +910 drivers/of/unittest.c 201c910bd6898d8 drivers/of/selftest.c Pantelis Antoniou 2014-07-04 871 04db93a95aef392 drivers/of/unittest.c Rob Herring 2019-09-20 872 static void __init of_unittest_dma_ranges_one(const char *path, e0d072782c734d2 drivers/of/unittest.c Jim Quinlan 2020-09-17 873 u64 expect_dma_addr, u64 expect_paddr) 04db93a95aef392 drivers/of/unittest.c Rob Herring 2019-09-20 874 { e0d072782c734d2 drivers/of/unittest.c Jim Quinlan 2020-09-17 875 #ifdef CONFIG_HAS_DMA 04db93a95aef392 drivers/of/unittest.c Rob Herring 2019-09-20 876 struct device_node *np; e0d072782c734d2 drivers/of/unittest.c Jim Quinlan 2020-09-17 877 const struct bus_dma_region *map = NULL; 04db93a95aef392 drivers/of/unittest.c Rob Herring 2019-09-20 878 int rc; 04db93a95aef392 drivers/of/unittest.c Rob Herring 2019-09-20 879 04db93a95aef392 drivers/of/unittest.c Rob Herring 2019-09-20 880 np = of_find_node_by_path(path); 04db93a95aef392 drivers/of/unittest.c Rob Herring 2019-09-20 881 if (!np) { 04db93a95aef392 drivers/of/unittest.c Rob Herring 2019-09-20 882 pr_err("missing testcase data\n"); 04db93a95aef392 drivers/of/unittest.c Rob Herring 2019-09-20 883 return; 04db93a95aef392 drivers/of/unittest.c Rob Herring 2019-09-20 884 } 04db93a95aef392 drivers/of/unittest.c Rob Herring 2019-09-20 885 e0d072782c734d2 drivers/of/unittest.c Jim Quinlan 2020-09-17 886 rc = of_dma_get_range(np, &map); 04db93a95aef392 drivers/of/unittest.c Rob Herring 2019-09-20 887 04db93a95aef392 drivers/of/unittest.c Rob Herring 2019-09-20 888 unittest(!rc, "of_dma_get_range failed on node %pOF rc=%i\n", np, rc); e0d072782c734d2 drivers/of/unittest.c Jim Quinlan 2020-09-17 889 04db93a95aef392 drivers/of/unittest.c Rob Herring 2019-09-20 890 if (!rc) { e0d072782c734d2 drivers/of/unittest.c Jim Quinlan 2020-09-17 891 phys_addr_t paddr; e0d072782c734d2 drivers/of/unittest.c Jim Quinlan 2020-09-17 892 dma_addr_t dma_addr; e0d072782c734d2 drivers/of/unittest.c Jim Quinlan 2020-09-17 893 struct device dev_bogus; e0d072782c734d2 drivers/of/unittest.c Jim Quinlan 2020-09-17 894 e0d072782c734d2 drivers/of/unittest.c Jim Quinlan 2020-09-17 895 dev_bogus.dma_range_map = map; e0d072782c734d2 drivers/of/unittest.c Jim Quinlan 2020-09-17 896 paddr = dma_to_phys(&dev_bogus, expect_dma_addr); e0d072782c734d2 drivers/of/unittest.c Jim Quinlan 2020-09-17 897 dma_addr = phys_to_dma(&dev_bogus, expect_paddr); e0d072782c734d2 drivers/of/unittest.c Jim Quinlan 2020-09-17 898 04db93a95aef392 drivers/of/unittest.c Rob Herring 2019-09-20 899 unittest(paddr == expect_paddr, e0d072782c734d2 drivers/of/unittest.c Jim Quinlan 2020-09-17 900 "of_dma_get_range: wrong phys addr %pap (expecting %llx) on node %pOF\n", e0d072782c734d2 drivers/of/unittest.c Jim Quinlan 2020-09-17 901 &paddr, expect_paddr, np); 04db93a95aef392 drivers/of/unittest.c Rob Herring 2019-09-20 902 unittest(dma_addr == expect_dma_addr, e0d072782c734d2 drivers/of/unittest.c Jim Quinlan 2020-09-17 903 "of_dma_get_range: wrong DMA addr %pad (expecting %llx) on node %pOF\n", e0d072782c734d2 drivers/of/unittest.c Jim Quinlan 2020-09-17 904 &dma_addr, expect_dma_addr, np); e0d072782c734d2 drivers/of/unittest.c Jim Quinlan 2020-09-17 905 e0d072782c734d2 drivers/of/unittest.c Jim Quinlan 2020-09-17 906 kfree(map); 04db93a95aef392 drivers/of/unittest.c Rob Herring 2019-09-20 907 } 04db93a95aef392 drivers/of/unittest.c Rob Herring 2019-09-20 908 of_node_put(np); e0d072782c734d2 drivers/of/unittest.c Jim Quinlan 2020-09-17 909 #endif 04db93a95aef392 drivers/of/unittest.c Rob Herring 2019-09-20 @910 } 04db93a95aef392 drivers/of/unittest.c Rob Herring 2019-09-20 911 :::::: The code at line 910 was first introduced by commit :::::: 04db93a95aef392a98f9ffa8745da2e7c58ba75b of/unittest: Add dma-ranges address translation tests :::::: TO: Rob Herring <robh(a)kernel.org&gt; :::::: CC: Rob Herring <robh(a)kernel.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org