tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: c6de47cf1f63ecc3ed337601e06ab8dc1c707563 commit: 73d5cd426ed0b4aed565a11aa8eb86d90b444d94 [15243/23920] arm64/mpam: Add mpam driver discovery phase and kbuild boiler plate config: arm64-randconfig-001-20241029 (https://download.01.org/0day-ci/archive/20241031/202410311541.Ld1wpJ0T-lkp@i...) compiler: aarch64-linux-gcc (GCC) 14.1.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241031/202410311541.Ld1wpJ0T-lkp@i...)

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@intel.com | Closes: https://lore.kernel.org/oe-kbuild-all/202410311541.Ld1wpJ0T-lkp@intel.com/

All warnings (new ones prefixed by >>):

...

arch/arm64/kernel/mpam/mpam_device.c:99:24: warning: no previous prototype for 'mpam_component_get' [-Wmissing-prototypes]

99 | struct mpam_component *mpam_component_get(struct mpam_class *class, int id, | ^~~~~~~~~~~~~~~~~~ arch/arm64/kernel/mpam/mpam_device.c:190:1: warning: no previous prototype for '__mpam_device_create' [-Wmissing-prototypes] 190 | __mpam_device_create(u8 level_idx, enum mpam_class_types type, | ^~~~~~~~~~~~~~~~~~~~ arch/arm64/kernel/mpam/mpam_device.c:248:12: warning: no previous prototype for 'mpam_discovery_start' [-Wmissing-prototypes] 248 | int __init mpam_discovery_start(void) | ^~~~~~~~~~~~~~~~~~~~ arch/arm64/kernel/mpam/mpam_device.c:256:12: warning: no previous prototype for 'mpam_discovery_complete' [-Wmissing-prototypes] 256 | int __init mpam_discovery_complete(void) | ^~~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kernel/mpam/mpam_device.c:261:13: warning: no previous prototype for 'mpam_discovery_failed' [-Wmissing-prototypes] 261 | void __init mpam_discovery_failed(void) | ^~~~~~~~~~~~~~~~~~~~~

vim +/mpam_component_get +99 arch/arm64/kernel/mpam/mpam_device.c

98

99 struct mpam_component *mpam_component_get(struct mpam_class *class, int id,

100 bool alloc) 101 { 102 struct mpam_component *comp; 103 104 list_for_each_entry(comp, &class->components, class_list) { 105 if (comp->comp_id == id) 106 return comp; 107 } 108 109 if (!alloc) 110 return ERR_PTR(-ENOENT); 111 112 comp = mpam_component_alloc(id); 113 if (IS_ERR(comp)) 114 return comp; 115 116 list_add(&comp->class_list, &class->components); 117 118 return comp; 119 } 120