Hi Caterina, kernel test robot noticed the following build warnings:
[auto build test WARNING on drm-xe/drm-xe-next] [also build test WARNING on linus/master v6.16-rc4 next-20250703] [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/Caterina-Shablia/drm-gpuvm-Kill-drm_gpuva_init/20250704-002914 base: https://gitlab.freedesktop.org/drm/xe/kernel.git drm-xe-next patch link: https://lore.kernel.org/r/20250703152908.16702-3-caterina.shablia%40collabora.com patch subject: [PATCH v2 1/7] drm/panthor: Add support for atomic page table updates config: x86_64-buildonly-randconfig-004-20250704 (https://download.01.org/0day-ci/archive/20250704/202507041635.wydu3tq1-...@intel.com/config) compiler: clang version 20.1.7 (https://github.com/llvm/llvm-project 6146a88f60492b520a36f8f8f3231e15f3cc6082) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250704/202507041635.wydu3tq1-...@intel.com/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 <l...@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202507041635.wydu3tq1-...@intel.com/ All warnings (new ones prefixed by >>): >> drivers/gpu/drm/panthor/panthor_mmu.c:1685:6: warning: variable 'ret' is >> used uninitialized whenever 'if' condition is false >> [-Wsometimes-uninitialized] 1685 | if (vm->as.id >= 0) { | ^~~~~~~~~~~~~~ drivers/gpu/drm/panthor/panthor_mmu.c:1691:9: note: uninitialized use occurs here 1691 | return ret; | ^~~ drivers/gpu/drm/panthor/panthor_mmu.c:1685:2: note: remove the 'if' if its condition is always true 1685 | if (vm->as.id >= 0) { | ^~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/panthor/panthor_mmu.c:1679:9: note: initialize the variable 'ret' to silence this warning 1679 | int ret; | ^ | = 0 1 warning generated. vim +1685 drivers/gpu/drm/panthor/panthor_mmu.c 1675 1676 static int panthor_vm_lock_region(struct panthor_vm *vm, u64 start, u64 size) 1677 { 1678 struct panthor_device *ptdev = vm->ptdev; 1679 int ret; 1680 1681 mutex_lock(&ptdev->mmu->as.slots_lock); 1682 drm_WARN_ON(&ptdev->base, vm->locked_region.start || vm->locked_region.size); 1683 vm->locked_region.start = start; 1684 vm->locked_region.size = size; > 1685 if (vm->as.id >= 0) { 1686 lock_region(ptdev, vm->as.id, start, size); 1687 ret = wait_ready(ptdev, vm->as.id); 1688 } 1689 mutex_unlock(&ptdev->mmu->as.slots_lock); 1690 1691 return ret; 1692 } 1693 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
