Hi Xu, Thank you for the patch! Yet something to improve: [auto build test ERROR on linus/master] [also build test ERROR on v5.9-rc1 next-20200814] [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/Xu-Wang/upcall-Remove-unneeded-v... base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 9123e3a74ec7b934a4a099e98af6a61c2f80bbf5 config: xtensa-allyesconfig (attached as .config) compiler: xtensa-linux-gcc (GCC) 9.3.0 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 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=xtensa If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): fs/coda/upcall.c: In function 'venus_setattr': fs/coda/upcall.c:115:27: warning: variable 'outp' set but not used [-Wunused-but-set-variable] 115 | union outputArgs *outp; | ^~~~ fs/coda/upcall.c: In function 'venus_close': fs/coda/upcall.c:164:20: warning: variable 'outp' set but not used [-Wunused-but-set-variable] 164 | union outputArgs *outp; | ^~~~ fs/coda/upcall.c: In function 'venus_rename': fs/coda/upcall.c:238:27: warning: variable 'outp' set but not used [-Wunused-but-set-variable] 238 | union outputArgs *outp; | ^~~~ fs/coda/upcall.c: In function 'venus_rmdir': fs/coda/upcall.c:306:27: warning: variable 'outp' set but not used [-Wunused-but-set-variable] 306 | union outputArgs *outp; | ^~~~ fs/coda/upcall.c: In function 'venus_remove': fs/coda/upcall.c:329:27: warning: variable 'outp' set but not used [-Wunused-but-set-variable] 329 | union outputArgs *outp; | ^~~~ fs/coda/upcall.c: In function 'venus_link': fs/coda/upcall.c:383:27: warning: variable 'outp' set but not used [-Wunused-but-set-variable] 383 | union outputArgs *outp; | ^~~~ fs/coda/upcall.c: In function 'venus_symlink': fs/coda/upcall.c:410:27: warning: variable 'outp' set but not used [-Wunused-but-set-variable] 410 | union outputArgs *outp; | ^~~~ fs/coda/upcall.c: In function 'venus_fsync': fs/coda/upcall.c:443:27: warning: variable 'outp' set but not used [-Wunused-but-set-variable] 443 | union outputArgs *outp; | ^~~~ fs/coda/upcall.c: In function 'venus_access': fs/coda/upcall.c:459:27: warning: variable 'outp' set but not used [-Wunused-but-set-variable] 459 | union outputArgs *outp; | ^~~~ fs/coda/upcall.c: In function 'venus_pioctl': 63 | inp = (union inputArgs *)alloc_upcall(op, insize); \ | ^~~~~~ fs/coda/upcall.c:483:2: note: in expansion of macro 'UPARG' 483 | UPARG(CODA_IOCTL); | ^~~~~ fs/coda/upcall.c:63:44: note: each undeclared identifier is reported only once for each function it appears in 63 | inp = (union inputArgs *)alloc_upcall(op, insize); \ | ^~~~~~ fs/coda/upcall.c:483:2: note: in expansion of macro 'UPARG' 483 | UPARG(CODA_IOCTL); | ^~~~~ fs/coda/upcall.c: In function 'venus_access_intent': fs/coda/upcall.c:576:20: warning: variable 'outp' set but not used [-Wunused-but-set-variable] 576 | union outputArgs *outp; | ^~~~ # https://github.com/0day-ci/linux/commit/e126bb2bc1e15e86a4267e92df88f4987... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Xu-Wang/upcall-Remove-unneeded-variable-insize/20200817-112244 git checkout e126bb2bc1e15e86a4267e92df88f4987d01b358 vim +63 fs/coda/upcall.c ^1da177e4c3f41 Linus Torvalds 2005-04-16 60 ^1da177e4c3f41 Linus Torvalds 2005-04-16 61 #define UPARG(op)\ ^1da177e4c3f41 Linus Torvalds 2005-04-16 62 do {\ ^1da177e4c3f41 Linus Torvalds 2005-04-16 @63 inp = (union inputArgs *)alloc_upcall(op, insize); \ ^1da177e4c3f41 Linus Torvalds 2005-04-16 64 if (IS_ERR(inp)) { return PTR_ERR(inp); }\ ^1da177e4c3f41 Linus Torvalds 2005-04-16 65 outp = (union outputArgs *)(inp); \ ^1da177e4c3f41 Linus Torvalds 2005-04-16 66 outsize = insize; \ ^1da177e4c3f41 Linus Torvalds 2005-04-16 67 } while (0) ^1da177e4c3f41 Linus Torvalds 2005-04-16 68 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org