Hi Kiwoong, [FYI, it's a private test report for your RFC patch.] [auto build test WARNING on scsi/for-next] [also build test WARNING on mkp-scsi/for-next] [cannot apply to v5.8-rc3] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Kiwoong-Kim/ufs-introduce-async-... base: https://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi.git for-next config: x86_64-allyesconfig (attached as .config) compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 003a086ffc0d1affbb8300b36225fb8150a2d40a) 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 # 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(a)intel.com&gt; All warnings (new ones prefixed by >>): if (!ufshcd_is_ufs_dev_active(hba)) { ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/scsi/ufs/ufshcd.c:8360:9: note: uninitialized use occurs here return ret; ^~~ drivers/scsi/ufs/ufshcd.c:8329:2: note: remove the 'if' if its condition is always true if (!ufshcd_is_ufs_dev_active(hba)) { ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/scsi/ufs/ufshcd.c:8327:9: note: initialize the variable 'ret' to silence this warning int ret; ^ = 0 1 warning generated. vim +8329 drivers/scsi/ufs/ufshcd.c 8324 8325 static int ufshcd_post_resume(struct ufs_hba *hba) 8326 { 8327 int ret; 8328 8330 ret = ufshcd_set_dev_pwr_mode(hba, UFS_ACTIVE_PWR_MODE); 8331 if (ret) 8332 goto out; 8333 } 8334 8335 if (ufshcd_keep_autobkops_enabled_except_suspend(hba)) 8336 ufshcd_enable_auto_bkops(hba); 8337 else 8338 /* 8339 * If BKOPs operations are urgently needed at this moment then 8340 * keep auto-bkops enabled or else disable it. 8341 */ 8342 ufshcd_urgent_bkops(hba); 8343 8344 hba->clk_gating.is_suspended = false; 8345 8346 if (hba->clk_scaling.is_allowed) 8347 ufshcd_resume_clkscaling(hba); 8348 8349 /* Enable Auto-Hibernate if configured */ 8350 ufshcd_auto_hibern8_enable(hba); 8351 8352 if (hba->dev_info.b_rpm_dev_flush_capable) { 8353 hba->dev_info.b_rpm_dev_flush_capable = false; 8354 cancel_delayed_work(&hba->rpm_dev_flush_recheck_work); 8355 } 8356 8357 /* Schedule clock gating in case of no access to UFS device yet */ 8358 ufshcd_release(hba); 8359 out: 8360 return ret; 8361 } 8362 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org