Hi Arnd, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 187b9ac8c348383f7f36c8413d73ad89e9b1e90a commit: 1a82d85108afbd1d3b5596cf3cadd378900a9ec2 [7518/11360] Merge branch 'omap1-multiplatform-5.18' into arm/multiplatform-late config: arm-buildonly-randconfig-r004-20220512 (https://download.01.org/0day-ci/archive/20220513/202205131534.YUrkTw9s-lkp@xxxxxxxxx/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 18dd123c56754edf62c7042dcf23185c3727610f) 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 arm cross compiling tool for clang build # apt-get install binutils-arm-linux-gnueabi # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=1a82d85108afbd1d3b5596cf3cadd378900a9ec2 git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout 1a82d85108afbd1d3b5596cf3cadd378900a9ec2 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash arch/arm/mach-spear/ drivers/clk/spear/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> arch/arm/mach-spear/spear6xx.c:365:13: warning: no previous prototype for function 'spear6xx_map_io' [-Wmissing-prototypes] void __init spear6xx_map_io(void) ^ arch/arm/mach-spear/spear6xx.c:365:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void __init spear6xx_map_io(void) ^ static >> arch/arm/mach-spear/spear6xx.c:370:13: warning: no previous prototype for function 'spear6xx_timer_init' [-Wmissing-prototypes] void __init spear6xx_timer_init(void) ^ arch/arm/mach-spear/spear6xx.c:370:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void __init spear6xx_timer_init(void) ^ static 2 warnings generated. -- >> drivers/clk/spear/spear6xx_clock.c:116:13: warning: no previous prototype for function 'spear6xx_clk_init' [-Wmissing-prototypes] void __init spear6xx_clk_init(void __iomem *misc_base) ^ drivers/clk/spear/spear6xx_clock.c:116:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void __init spear6xx_clk_init(void __iomem *misc_base) ^ static 1 warning generated. vim +/spear6xx_map_io +365 arch/arm/mach-spear/spear6xx.c 8f590d4541fb678 arch/arm/mach-spear6xx/spear6xx.c Viresh Kumar 2010-04-01 363 8f590d4541fb678 arch/arm/mach-spear6xx/spear6xx.c Viresh Kumar 2010-04-01 364 /* This will create static memory mapping for selected devices */ 8f590d4541fb678 arch/arm/mach-spear6xx/spear6xx.c Viresh Kumar 2010-04-01 @365 void __init spear6xx_map_io(void) 8f590d4541fb678 arch/arm/mach-spear6xx/spear6xx.c Viresh Kumar 2010-04-01 366 { 8f590d4541fb678 arch/arm/mach-spear6xx/spear6xx.c Viresh Kumar 2010-04-01 367 iotable_init(spear6xx_io_desc, ARRAY_SIZE(spear6xx_io_desc)); 8f590d4541fb678 arch/arm/mach-spear6xx/spear6xx.c Viresh Kumar 2010-04-01 368 } 5c881d9ae948017 arch/arm/mach-spear6xx/spear6xx.c Shiraz Hashim 2011-02-16 369 6bb27d7349db51b arch/arm/mach-spear6xx/spear6xx.c Stephen Warren 2012-11-08 @370 void __init spear6xx_timer_init(void) 5c881d9ae948017 arch/arm/mach-spear6xx/spear6xx.c Shiraz Hashim 2011-02-16 371 { a8f4bf0eb4ca7a0 arch/arm/mach-spear6xx/spear6xx.c Vipul Kumar Samar 2012-07-10 372 char pclk_name[] = "pll3_clk"; 5c881d9ae948017 arch/arm/mach-spear6xx/spear6xx.c Shiraz Hashim 2011-02-16 373 struct clk *gpt_clk, *pclk; 5c881d9ae948017 arch/arm/mach-spear6xx/spear6xx.c Shiraz Hashim 2011-02-16 374 d9909ebe650f028 arch/arm/mach-spear/spear6xx.c Arnd Bergmann 2012-12-02 375 spear6xx_clk_init(MISC_BASE); 5df33a62c4a028d arch/arm/mach-spear6xx/spear6xx.c Viresh Kumar 2012-04-10 376 5c881d9ae948017 arch/arm/mach-spear6xx/spear6xx.c Shiraz Hashim 2011-02-16 377 /* get the system timer clock */ 5c881d9ae948017 arch/arm/mach-spear6xx/spear6xx.c Shiraz Hashim 2011-02-16 378 gpt_clk = clk_get_sys("gpt0", NULL); 5c881d9ae948017 arch/arm/mach-spear6xx/spear6xx.c Shiraz Hashim 2011-02-16 379 if (IS_ERR(gpt_clk)) { 5c881d9ae948017 arch/arm/mach-spear6xx/spear6xx.c Shiraz Hashim 2011-02-16 380 pr_err("%s:couldn't get clk for gpt\n", __func__); 5c881d9ae948017 arch/arm/mach-spear6xx/spear6xx.c Shiraz Hashim 2011-02-16 381 BUG(); 5c881d9ae948017 arch/arm/mach-spear6xx/spear6xx.c Shiraz Hashim 2011-02-16 382 } 5c881d9ae948017 arch/arm/mach-spear6xx/spear6xx.c Shiraz Hashim 2011-02-16 383 5c881d9ae948017 arch/arm/mach-spear6xx/spear6xx.c Shiraz Hashim 2011-02-16 384 /* get the suitable parent clock for timer*/ 5c881d9ae948017 arch/arm/mach-spear6xx/spear6xx.c Shiraz Hashim 2011-02-16 385 pclk = clk_get(NULL, pclk_name); 5c881d9ae948017 arch/arm/mach-spear6xx/spear6xx.c Shiraz Hashim 2011-02-16 386 if (IS_ERR(pclk)) { 5c881d9ae948017 arch/arm/mach-spear6xx/spear6xx.c Shiraz Hashim 2011-02-16 387 pr_err("%s:couldn't get %s as parent for gpt\n", 5c881d9ae948017 arch/arm/mach-spear6xx/spear6xx.c Shiraz Hashim 2011-02-16 388 __func__, pclk_name); 5c881d9ae948017 arch/arm/mach-spear6xx/spear6xx.c Shiraz Hashim 2011-02-16 389 BUG(); 5c881d9ae948017 arch/arm/mach-spear6xx/spear6xx.c Shiraz Hashim 2011-02-16 390 } 5c881d9ae948017 arch/arm/mach-spear6xx/spear6xx.c Shiraz Hashim 2011-02-16 391 5c881d9ae948017 arch/arm/mach-spear6xx/spear6xx.c Shiraz Hashim 2011-02-16 392 clk_set_parent(gpt_clk, pclk); 5c881d9ae948017 arch/arm/mach-spear6xx/spear6xx.c Shiraz Hashim 2011-02-16 393 clk_put(gpt_clk); 5c881d9ae948017 arch/arm/mach-spear6xx/spear6xx.c Shiraz Hashim 2011-02-16 394 clk_put(pclk); 5c881d9ae948017 arch/arm/mach-spear6xx/spear6xx.c Shiraz Hashim 2011-02-16 395 30551c0108e0d2f arch/arm/mach-spear6xx/spear6xx.c Viresh Kumar 2012-04-21 396 spear_setup_of_timer(); 5c881d9ae948017 arch/arm/mach-spear6xx/spear6xx.c Shiraz Hashim 2011-02-16 397 } 5c881d9ae948017 arch/arm/mach-spear6xx/spear6xx.c Shiraz Hashim 2011-02-16 398 :::::: The code at line 365 was first introduced by commit :::::: 8f590d4541fb678a638777ab987709217cb71365 ARM: 6015/1: ST SPEAr: Added source files for SPEAr6xx machine family :::::: TO: viresh kumar <viresh.kumar@xxxxxx> :::::: CC: Russell King <rmk+kernel@xxxxxxxxxxxxxxxx> -- 0-DAY CI Kernel Test Service https://01.org/lkp
