Hi Tong, Thank you for the patch! Yet something to improve: [auto build test ERROR on linus/master] [also build test ERROR on v5.11 next-20210219] [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] url: https://github.com/0day-ci/linux/commits/Tong-Zhang/video-fbdev-pm2fb-avoid-stall-on-fb_sync/20210221-070421 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git f40ddce88593482919761f74910f42f4b84c004b config: x86_64-randconfig-a003-20210221 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project c9439ca36342fb6013187d0a69aef92736951476) 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 # install x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu # https://github.com/0day-ci/linux/commit/77b85e0ba17f78b0335bf283901691ec3942dec3 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Tong-Zhang/video-fbdev-pm2fb-avoid-stall-on-fb_sync/20210221-070421 git checkout 77b85e0ba17f78b0335bf283901691ec3942dec3 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): >> drivers/video/fbdev/pm2fb.c:193:19: error: cannot combine with previous 'int' declaration specifier static int inline void WAIT_FIFO_TIMEOUT(struct pm2fb_par *p, u32 a) ^ 1 error generated. vim +/int +193 drivers/video/fbdev/pm2fb.c 183 184 #ifdef CONFIG_FB_PM2_FIFO_DISCONNECT 185 #define WAIT_FIFO(p, a) 186 #define WAIT_FIFO_TIMEOUT(p, a) (0) 187 #else 188 static inline void WAIT_FIFO(struct pm2fb_par *p, u32 a) 189 { 190 while (pm2_RD(p, PM2R_IN_FIFO_SPACE) < a) 191 cpu_relax(); 192 } > 193 static int inline void WAIT_FIFO_TIMEOUT(struct pm2fb_par *p, u32 a) 194 { 195 int timeout = 10000; 196 while (pm2_RD(p, PM2R_IN_FIFO_SPACE) < a) { 197 cpu_relax(); 198 if (--timeout==0) 199 return 1; 200 } 201 return 0; 202 } 203 #endif 204 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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