Messages in this thread | | | Date | Wed, 25 May 2022 21:00:25 +0800 | From | kernel test robot <> | Subject | drivers/dma-buf/st-dma-fence-unwrap.c:125:13: warning: variable 'err' set but not used |
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Hi Christian,
FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: fdaf9a5840acaab18694a19e0eb0aa51162eeeed commit: 64a8f92fd783e750cdb81af75942dcd53bbf61bd dma-buf: add dma_fence_unwrap v2 date: 9 weeks ago config: arc-allyesconfig (https://download.01.org/0day-ci/archive/20220525/202205252017.OlDscDi2-lkp@intel.com/config) compiler: arceb-elf-gcc (GCC) 11.3.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=64a8f92fd783e750cdb81af75942dcd53bbf61bd git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 64a8f92fd783e750cdb81af75942dcd53bbf61bd # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=arc SHELL=/bin/bash drivers/dma-buf/
If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
drivers/dma-buf/st-dma-fence-unwrap.c: In function 'unwrap_array': >> drivers/dma-buf/st-dma-fence-unwrap.c:125:13: warning: variable 'err' set but not used [-Wunused-but-set-variable] 125 | int err = 0; | ^~~ drivers/dma-buf/st-dma-fence-unwrap.c: In function 'unwrap_chain': drivers/dma-buf/st-dma-fence-unwrap.c:167:13: warning: variable 'err' set but not used [-Wunused-but-set-variable] 167 | int err = 0; | ^~~ drivers/dma-buf/st-dma-fence-unwrap.c: In function 'unwrap_chain_array': drivers/dma-buf/st-dma-fence-unwrap.c:209:13: warning: variable 'err' set but not used [-Wunused-but-set-variable] 209 | int err = 0; | ^~~
vim +/err +125 drivers/dma-buf/st-dma-fence-unwrap.c
120 121 static int unwrap_array(void *arg) 122 { 123 struct dma_fence *fence, *f1, *f2, *array; 124 struct dma_fence_unwrap iter; > 125 int err = 0; 126 127 f1 = mock_fence(); 128 if (!f1) 129 return -ENOMEM; 130 131 f2 = mock_fence(); 132 if (!f2) { 133 dma_fence_put(f1); 134 return -ENOMEM; 135 } 136 137 array = mock_array(2, f1, f2); 138 if (!array) 139 return -ENOMEM; 140 141 dma_fence_unwrap_for_each(fence, &iter, array) { 142 if (fence == f1) { 143 f1 = NULL; 144 } else if (fence == f2) { 145 f2 = NULL; 146 } else { 147 pr_err("Unexpected fence!\n"); 148 err = -EINVAL; 149 } 150 } 151 152 if (f1 || f2) { 153 pr_err("Not all fences seen!\n"); 154 err = -EINVAL; 155 } 156 157 dma_fence_signal(f1); 158 dma_fence_signal(f2); 159 dma_fence_put(array); 160 return 0; 161 } 162
-- 0-DAY CI Kernel Test Service https://01.org/lkp
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