[PATCH] dma-fence: Bypass signaling annotation from dma_fence_is_signaled

[kernel test robot]

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@intel.com/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@linux.intel.com
        # 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 at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202306090039.JEYvWyVv-lkp@intel.com/

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	

-- 
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https://github.com/intel/lkp-tests/wiki