Hi Zeng, kernel test robot noticed the following build warnings: [auto build test WARNING on efi/next] [also build test WARNING on linus/master v6.12-rc4 next-20241024] [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/Zeng-Heng/drivers-firmware-Fix-unused-const-variable-efifb_fwnode_ops/20241024-163259 base: https://git.kernel.org/pub/scm/linux/kernel/git/efi/efi.git next patch link: https://lore.kernel.org/r/20241024084435.165333-1-zengheng4%40huawei.com patch subject: [PATCH] drivers/firmware: Fix unused const variable 'efifb_fwnode_ops' config: x86_64-buildonly-randconfig-002-20241025 (https://download.01.org/0day-ci/archive/20241025/202410251211.Jze0KkZR-lkp@xxxxxxxxx/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241025/202410251211.Jze0KkZR-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/202410251211.Jze0KkZR-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> drivers/firmware/efi/sysfb_efi.c:328:12: warning: 'efifb_add_links' defined but not used [-Wunused-function] 328 | static int efifb_add_links(struct fwnode_handle *fwnode) | ^~~~~~~~~~~~~~~ >> drivers/firmware/efi/sysfb_efi.c:94:19: warning: 'efifb_set_system' defined but not used [-Wunused-function] 94 | static int __init efifb_set_system(const struct dmi_system_id *id) | ^~~~~~~~~~~~~~~~ vim +/efifb_add_links +328 drivers/firmware/efi/sysfb_efi.c 8633ef82f101c0 Javier Martinez Canillas 2021-06-25 320 8633ef82f101c0 Javier Martinez Canillas 2021-06-25 321 /* 8633ef82f101c0 Javier Martinez Canillas 2021-06-25 322 * If the efifb framebuffer is backed by a PCI graphics controller, we have 8633ef82f101c0 Javier Martinez Canillas 2021-06-25 323 * to ensure that this relation is expressed using a device link when 8633ef82f101c0 Javier Martinez Canillas 2021-06-25 324 * running in DT mode, or the probe order may be reversed, resulting in a 8633ef82f101c0 Javier Martinez Canillas 2021-06-25 325 * resource reservation conflict on the memory window that the efifb 8633ef82f101c0 Javier Martinez Canillas 2021-06-25 326 * framebuffer steals from the PCIe host bridge. 8633ef82f101c0 Javier Martinez Canillas 2021-06-25 327 */ 8633ef82f101c0 Javier Martinez Canillas 2021-06-25 @328 static int efifb_add_links(struct fwnode_handle *fwnode) 8633ef82f101c0 Javier Martinez Canillas 2021-06-25 329 { 8633ef82f101c0 Javier Martinez Canillas 2021-06-25 330 struct device_node *sup_np; 8633ef82f101c0 Javier Martinez Canillas 2021-06-25 331 8633ef82f101c0 Javier Martinez Canillas 2021-06-25 332 sup_np = find_pci_overlap_node(); 8633ef82f101c0 Javier Martinez Canillas 2021-06-25 333 8633ef82f101c0 Javier Martinez Canillas 2021-06-25 334 /* 8633ef82f101c0 Javier Martinez Canillas 2021-06-25 335 * If there's no PCI graphics controller backing the efifb, we are 8633ef82f101c0 Javier Martinez Canillas 2021-06-25 336 * done here. 8633ef82f101c0 Javier Martinez Canillas 2021-06-25 337 */ 8633ef82f101c0 Javier Martinez Canillas 2021-06-25 338 if (!sup_np) 8633ef82f101c0 Javier Martinez Canillas 2021-06-25 339 return 0; 8633ef82f101c0 Javier Martinez Canillas 2021-06-25 340 75cde56a5b504d Saravana Kannan 2024-03-04 341 fwnode_link_add(fwnode, of_fwnode_handle(sup_np), 0); 8633ef82f101c0 Javier Martinez Canillas 2021-06-25 342 of_node_put(sup_np); 8633ef82f101c0 Javier Martinez Canillas 2021-06-25 343 8633ef82f101c0 Javier Martinez Canillas 2021-06-25 344 return 0; 8633ef82f101c0 Javier Martinez Canillas 2021-06-25 345 } 8633ef82f101c0 Javier Martinez Canillas 2021-06-25 346 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
