Hi Tvrtko, kernel test robot noticed the following build warnings: [auto build test WARNING on drm-misc/drm-misc-next] [also build test WARNING on drm-tip/drm-tip linus/master v6.4-rc5 next-20230608] [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/Tvrtko-Ursulin/dma-fence-Bypass-signaling-annotation-from-dma_fence_is_signaled/20230608-223804 base: git://anongit.freedesktop.org/drm/drm-misc drm-misc-next patch link: https://lore.kernel.org/r/20230608143059.1038115-1-tvrtko.ursulin%40linux.intel.com patch subject: [PATCH] dma-fence: Bypass signaling annotation from dma_fence_is_signaled config: arm-buildonly-randconfig-r006-20230608 (https://download.01.org/0day-ci/archive/20230609/202306090039.JEYvWyVv-lkp@xxxxxxxxx/config) compiler: arm-linux-gnueabi-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 git remote add drm-misc git://anongit.freedesktop.org/drm/drm-misc git fetch drm-misc drm-misc-next git checkout drm-misc/drm-misc-next b4 shazam https://lore.kernel.org/r/20230608143059.1038115-1-tvrtko.ursulin@xxxxxxxxxxxxxxx # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.3.0 ~/bin/make.cross W=1 O=build_dir ARCH=arm olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.3.0 ~/bin/make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash drivers/dma-buf/ 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/202306090039.JEYvWyVv-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> drivers/dma-buf/dma-fence.c:454: warning: expecting prototype for __dma_fence_signal(). Prototype was for _dma_fence_signal() instead vim +454 drivers/dma-buf/dma-fence.c 446 447 /** 448 * __dma_fence_signal - signal completion of a fence bypassing critical section annotation 449 * @fence: the fence to signal 450 * 451 * This low-level helper should not be used by code external to dma-fence.h|c! 452 */ 453 int _dma_fence_signal(struct dma_fence *fence) > 454 { 455 unsigned long flags; 456 int ret; 457 458 spin_lock_irqsave(fence->lock, flags); 459 ret = dma_fence_signal_timestamp_locked(fence, ktime_get()); 460 spin_unlock_irqrestore(fence->lock, flags); 461 462 return ret; 463 } 464 EXPORT_SYMBOL(_dma_fence_signal); 465 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki