Hi Christophe, kernel test robot noticed the following build errors: [auto build test ERROR on linus/master] [also build test ERROR on v6.4-rc4 next-20230602] [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/Christophe-JAILLET/cdx-Drop-useless-LIST_HEAD/20230604-124432 base: linus/master patch link: https://lore.kernel.org/r/cee692c7babd754c1c36186af116c4bb4dad0a17.1685853842.git.christophe.jaillet%40wanadoo.fr patch subject: [PATCH] cdx: Drop useless LIST_HEAD config: arm64-allyesconfig (https://download.01.org/0day-ci/archive/20230604/202306041613.FCYOdhUW-lkp@xxxxxxxxx/config) compiler: aarch64-linux-gcc (GCC) 12.3.0 reproduce (this is a W=1 build): mkdir -p ~/bin wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/intel-lab-lkp/linux/commit/0836d9a86cf6d803585f7d9810ec8622ec81b2f7 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Christophe-JAILLET/cdx-Drop-useless-LIST_HEAD/20230604-124432 git checkout 0836d9a86cf6d803585f7d9810ec8622ec81b2f7 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.3.0 ~/bin/make.cross W=1 O=build_dir ARCH=arm64 olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.3.0 ~/bin/make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202306041613.FCYOdhUW-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): drivers/cdx/controller/mcdi.c: In function 'cdx_mcdi_process_cmd': >> drivers/cdx/controller/mcdi.c:637:64: error: 'cleanup_list' undeclared (first use in this function) 637 | cdx_mcdi_complete_cmd(mcdi, cmd, outbuf, len, &cleanup_list); | ^~~~~~~~~~~~ drivers/cdx/controller/mcdi.c:637:64: note: each undeclared identifier is reported only once for each function it appears in vim +/cleanup_list +637 drivers/cdx/controller/mcdi.c eb96b740192b2a0 Nipun Gupta 2023-03-13 609 eb96b740192b2a0 Nipun Gupta 2023-03-13 610 void cdx_mcdi_process_cmd(struct cdx_mcdi *cdx, struct cdx_dword *outbuf, int len) eb96b740192b2a0 Nipun Gupta 2023-03-13 611 { eb96b740192b2a0 Nipun Gupta 2023-03-13 612 struct cdx_mcdi_iface *mcdi; eb96b740192b2a0 Nipun Gupta 2023-03-13 613 struct cdx_mcdi_cmd *cmd; eb96b740192b2a0 Nipun Gupta 2023-03-13 614 unsigned int respseq; eb96b740192b2a0 Nipun Gupta 2023-03-13 615 eb96b740192b2a0 Nipun Gupta 2023-03-13 616 if (!len || !outbuf) { eb96b740192b2a0 Nipun Gupta 2023-03-13 617 pr_err("Got empty MC response\n"); eb96b740192b2a0 Nipun Gupta 2023-03-13 618 return; eb96b740192b2a0 Nipun Gupta 2023-03-13 619 } eb96b740192b2a0 Nipun Gupta 2023-03-13 620 eb96b740192b2a0 Nipun Gupta 2023-03-13 621 mcdi = cdx_mcdi_if(cdx); eb96b740192b2a0 Nipun Gupta 2023-03-13 622 if (!mcdi) eb96b740192b2a0 Nipun Gupta 2023-03-13 623 return; eb96b740192b2a0 Nipun Gupta 2023-03-13 624 eb96b740192b2a0 Nipun Gupta 2023-03-13 625 respseq = CDX_DWORD_FIELD(outbuf[0], MCDI_HEADER_SEQ); eb96b740192b2a0 Nipun Gupta 2023-03-13 626 eb96b740192b2a0 Nipun Gupta 2023-03-13 627 mutex_lock(&mcdi->iface_lock); eb96b740192b2a0 Nipun Gupta 2023-03-13 628 cmd = mcdi->seq_held_by[respseq]; eb96b740192b2a0 Nipun Gupta 2023-03-13 629 eb96b740192b2a0 Nipun Gupta 2023-03-13 630 if (cmd) { eb96b740192b2a0 Nipun Gupta 2023-03-13 631 if (cmd->state == MCDI_STATE_FINISHED) { eb96b740192b2a0 Nipun Gupta 2023-03-13 632 mutex_unlock(&mcdi->iface_lock); eb96b740192b2a0 Nipun Gupta 2023-03-13 633 kref_put(&cmd->ref, cdx_mcdi_cmd_release); eb96b740192b2a0 Nipun Gupta 2023-03-13 634 return; eb96b740192b2a0 Nipun Gupta 2023-03-13 635 } eb96b740192b2a0 Nipun Gupta 2023-03-13 636 eb96b740192b2a0 Nipun Gupta 2023-03-13 @637 cdx_mcdi_complete_cmd(mcdi, cmd, outbuf, len, &cleanup_list); eb96b740192b2a0 Nipun Gupta 2023-03-13 638 } else { eb96b740192b2a0 Nipun Gupta 2023-03-13 639 pr_err("MC response unexpected for seq : %0X\n", respseq); eb96b740192b2a0 Nipun Gupta 2023-03-13 640 } eb96b740192b2a0 Nipun Gupta 2023-03-13 641 eb96b740192b2a0 Nipun Gupta 2023-03-13 642 mutex_unlock(&mcdi->iface_lock); eb96b740192b2a0 Nipun Gupta 2023-03-13 643 eb96b740192b2a0 Nipun Gupta 2023-03-13 644 cdx_mcdi_process_cleanup_list(mcdi->cdx, &cleanup_list); eb96b740192b2a0 Nipun Gupta 2023-03-13 645 } eb96b740192b2a0 Nipun Gupta 2023-03-13 646 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki