Hi Stephen, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 0bddd227f3dc55975e2b8dfa7fc6f959b062a2c7 commit: bbd7ffdbef6888459f301c5889f3b14ada38b913 clk: Allow the common clk framework to be selectable date: 9 weeks ago config: openrisc-randconfig-s031-20200710 (attached as .config) compiler: or1k-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.2-37-gc9676a3b-dirty git checkout bbd7ffdbef6888459f301c5889f3b14ada38b913 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=openrisc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) drivers/clk/clk-hsdk-pll.c:407:24: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void *addr @@ got void [noderef] <asn:2> *spec_regs @@ drivers/clk/clk-hsdk-pll.c:407:24: sparse: got void [noderef] <asn:2> *spec_regs drivers/clk/clk-hsdk-pll.c:409:24: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void *addr @@ got void [noderef] <asn:2> *regs @@ drivers/clk/clk-hsdk-pll.c:409:24: sparse: expected void *addr drivers/clk/clk-hsdk-pll.c:409:24: sparse: got void [noderef] <asn:2> *regs vim +407 drivers/clk/clk-hsdk-pll.c daeeb438c052e3 Eugeniy Paltsev 2017-08-25 353 daeeb438c052e3 Eugeniy Paltsev 2017-08-25 354 static void __init of_hsdk_pll_clk_setup(struct device_node *node) daeeb438c052e3 Eugeniy Paltsev 2017-08-25 355 { daeeb438c052e3 Eugeniy Paltsev 2017-08-25 356 int ret; daeeb438c052e3 Eugeniy Paltsev 2017-08-25 357 const char *parent_name; daeeb438c052e3 Eugeniy Paltsev 2017-08-25 358 unsigned int num_parents; daeeb438c052e3 Eugeniy Paltsev 2017-08-25 359 struct hsdk_pll_clk *pll_clk; daeeb438c052e3 Eugeniy Paltsev 2017-08-25 360 struct clk_init_data init = { }; daeeb438c052e3 Eugeniy Paltsev 2017-08-25 361 daeeb438c052e3 Eugeniy Paltsev 2017-08-25 362 pll_clk = kzalloc(sizeof(*pll_clk), GFP_KERNEL); daeeb438c052e3 Eugeniy Paltsev 2017-08-25 363 if (!pll_clk) daeeb438c052e3 Eugeniy Paltsev 2017-08-25 364 return; daeeb438c052e3 Eugeniy Paltsev 2017-08-25 365 daeeb438c052e3 Eugeniy Paltsev 2017-08-25 366 pll_clk->regs = of_iomap(node, 0); daeeb438c052e3 Eugeniy Paltsev 2017-08-25 367 if (!pll_clk->regs) { daeeb438c052e3 Eugeniy Paltsev 2017-08-25 368 pr_err("failed to map pll registers\n"); daeeb438c052e3 Eugeniy Paltsev 2017-08-25 369 goto err_free_pll_clk; daeeb438c052e3 Eugeniy Paltsev 2017-08-25 370 } daeeb438c052e3 Eugeniy Paltsev 2017-08-25 371 daeeb438c052e3 Eugeniy Paltsev 2017-08-25 372 pll_clk->spec_regs = of_iomap(node, 1); daeeb438c052e3 Eugeniy Paltsev 2017-08-25 373 if (!pll_clk->spec_regs) { daeeb438c052e3 Eugeniy Paltsev 2017-08-25 374 pr_err("failed to map pll registers\n"); daeeb438c052e3 Eugeniy Paltsev 2017-08-25 375 goto err_unmap_comm_regs; daeeb438c052e3 Eugeniy Paltsev 2017-08-25 376 } daeeb438c052e3 Eugeniy Paltsev 2017-08-25 377 daeeb438c052e3 Eugeniy Paltsev 2017-08-25 378 init.name = node->name; daeeb438c052e3 Eugeniy Paltsev 2017-08-25 379 init.ops = &hsdk_pll_ops; daeeb438c052e3 Eugeniy Paltsev 2017-08-25 380 parent_name = of_clk_get_parent_name(node, 0); daeeb438c052e3 Eugeniy Paltsev 2017-08-25 381 init.parent_names = &parent_name; daeeb438c052e3 Eugeniy Paltsev 2017-08-25 382 num_parents = of_clk_get_parent_count(node); daeeb438c052e3 Eugeniy Paltsev 2017-08-25 383 if (num_parents > CGU_PLL_SOURCE_MAX) { daeeb438c052e3 Eugeniy Paltsev 2017-08-25 384 pr_err("too much clock parents: %u\n", num_parents); daeeb438c052e3 Eugeniy Paltsev 2017-08-25 385 goto err_unmap_spec_regs; daeeb438c052e3 Eugeniy Paltsev 2017-08-25 386 } daeeb438c052e3 Eugeniy Paltsev 2017-08-25 387 init.num_parents = num_parents; daeeb438c052e3 Eugeniy Paltsev 2017-08-25 388 daeeb438c052e3 Eugeniy Paltsev 2017-08-25 389 pll_clk->hw.init = &init; daeeb438c052e3 Eugeniy Paltsev 2017-08-25 390 pll_clk->pll_devdata = &core_pll_devdata; daeeb438c052e3 Eugeniy Paltsev 2017-08-25 391 daeeb438c052e3 Eugeniy Paltsev 2017-08-25 392 ret = clk_hw_register(NULL, &pll_clk->hw); daeeb438c052e3 Eugeniy Paltsev 2017-08-25 393 if (ret) { e665f029a283af Rob Herring 2018-08-28 394 pr_err("failed to register %pOFn clock\n", node); daeeb438c052e3 Eugeniy Paltsev 2017-08-25 395 goto err_unmap_spec_regs; daeeb438c052e3 Eugeniy Paltsev 2017-08-25 396 } daeeb438c052e3 Eugeniy Paltsev 2017-08-25 397 daeeb438c052e3 Eugeniy Paltsev 2017-08-25 398 ret = of_clk_add_hw_provider(node, of_clk_hw_simple_get, &pll_clk->hw); daeeb438c052e3 Eugeniy Paltsev 2017-08-25 399 if (ret) { e665f029a283af Rob Herring 2018-08-28 400 pr_err("failed to add hw provider for %pOFn clock\n", node); daeeb438c052e3 Eugeniy Paltsev 2017-08-25 401 goto err_unmap_spec_regs; daeeb438c052e3 Eugeniy Paltsev 2017-08-25 402 } daeeb438c052e3 Eugeniy Paltsev 2017-08-25 403 daeeb438c052e3 Eugeniy Paltsev 2017-08-25 404 return; daeeb438c052e3 Eugeniy Paltsev 2017-08-25 405 daeeb438c052e3 Eugeniy Paltsev 2017-08-25 406 err_unmap_spec_regs: daeeb438c052e3 Eugeniy Paltsev 2017-08-25 @407 iounmap(pll_clk->spec_regs); daeeb438c052e3 Eugeniy Paltsev 2017-08-25 408 err_unmap_comm_regs: daeeb438c052e3 Eugeniy Paltsev 2017-08-25 409 iounmap(pll_clk->regs); daeeb438c052e3 Eugeniy Paltsev 2017-08-25 410 err_free_pll_clk: daeeb438c052e3 Eugeniy Paltsev 2017-08-25 411 kfree(pll_clk); daeeb438c052e3 Eugeniy Paltsev 2017-08-25 412 } daeeb438c052e3 Eugeniy Paltsev 2017-08-25 413 :::::: The code at line 407 was first introduced by commit :::::: daeeb438c052e3763617c636943e07a8f3684e9e ARC: clk: introduce HSDK pll driver :::::: TO: Eugeniy Paltsev <Eugeniy.Paltsev(a)synopsys.com&gt; :::::: CC: Stephen Boyd <sboyd(a)codeaurora.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org