Hi Vaibhav, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on v5.8-rc5] [cannot apply to scsi/for-next mkp-scsi/for-next next-20200717] [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/Vaibhav-Gupta/scsi-use-generic-p... base: 11ba468877bb23f28956a35e896356252d63c983 config: arm64-randconfig-r004-20200716 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project ed6b578040a85977026c93bf4188f996148f3218) 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 arm64 cross compiling tool for clang build # apt-get install binutils-aarch64-linux-gnu # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm64 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 (test_bit(AF2_IRQ_CLAIMED, &a->flags2)) { ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/scsi/esas2r/esas2r_init.c:712:10: note: uninitialized use occurs here rez); ^~~ drivers/scsi/esas2r/esas2r_init.c:696:2: note: remove the 'if' if its condition is always false if (test_bit(AF2_IRQ_CLAIMED, &a->flags2)) { ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/scsi/esas2r/esas2r_init.c:661:9: note: initialize the variable 'rez' to silence this warning int rez; ^ = 0 1 warning generated. vim +696 drivers/scsi/esas2r/esas2r_init.c 26780d9e12edf4 Bradley Grove 2013-08-23 656 d045ddf3e97346 Vaibhav Gupta 2020-07-17 657 static int __maybe_unused esas2r_resume(struct device *dev) 26780d9e12edf4 Bradley Grove 2013-08-23 658 { d045ddf3e97346 Vaibhav Gupta 2020-07-17 659 struct Scsi_Host *host = dev_get_drvdata(dev); 26780d9e12edf4 Bradley Grove 2013-08-23 660 struct esas2r_adapter *a = (struct esas2r_adapter *)host->hostdata; 26780d9e12edf4 Bradley Grove 2013-08-23 661 int rez; 26780d9e12edf4 Bradley Grove 2013-08-23 662 d045ddf3e97346 Vaibhav Gupta 2020-07-17 663 esas2r_log_dev(ESAS2R_LOG_INFO, dev, "resuming adapter()"); d045ddf3e97346 Vaibhav Gupta 2020-07-17 664 esas2r_log_dev(ESAS2R_LOG_INFO, dev, d045ddf3e97346 Vaibhav Gupta 2020-07-17 665 "device_wakeup_disable() " 26780d9e12edf4 Bradley Grove 2013-08-23 666 "called"); d045ddf3e97346 Vaibhav Gupta 2020-07-17 667 device_wakeup_disable(dev); 26780d9e12edf4 Bradley Grove 2013-08-23 668 26780d9e12edf4 Bradley Grove 2013-08-23 669 if (!a) { 26780d9e12edf4 Bradley Grove 2013-08-23 670 rez = -ENODEV; 26780d9e12edf4 Bradley Grove 2013-08-23 671 goto error_exit; 26780d9e12edf4 Bradley Grove 2013-08-23 672 } 26780d9e12edf4 Bradley Grove 2013-08-23 673 26780d9e12edf4 Bradley Grove 2013-08-23 674 if (esas2r_map_regions(a) != 0) { 26780d9e12edf4 Bradley Grove 2013-08-23 675 esas2r_log(ESAS2R_LOG_CRIT, "could not re-map PCI regions!"); 26780d9e12edf4 Bradley Grove 2013-08-23 676 rez = -ENOMEM; 26780d9e12edf4 Bradley Grove 2013-08-23 677 goto error_exit; 26780d9e12edf4 Bradley Grove 2013-08-23 678 } 26780d9e12edf4 Bradley Grove 2013-08-23 679 26780d9e12edf4 Bradley Grove 2013-08-23 680 /* Set up interupt mode */ 26780d9e12edf4 Bradley Grove 2013-08-23 681 esas2r_setup_interrupts(a, a->intr_mode); 26780d9e12edf4 Bradley Grove 2013-08-23 682 26780d9e12edf4 Bradley Grove 2013-08-23 683 /* 26780d9e12edf4 Bradley Grove 2013-08-23 684 * Disable chip interrupts to prevent spurious interrupts until we 26780d9e12edf4 Bradley Grove 2013-08-23 685 * claim the IRQ. 26780d9e12edf4 Bradley Grove 2013-08-23 686 */ 26780d9e12edf4 Bradley Grove 2013-08-23 687 esas2r_disable_chip_interrupts(a); 26780d9e12edf4 Bradley Grove 2013-08-23 688 if (!esas2r_power_up(a, true)) { 26780d9e12edf4 Bradley Grove 2013-08-23 689 esas2r_debug("yikes, esas2r_power_up failed"); 26780d9e12edf4 Bradley Grove 2013-08-23 690 rez = -ENOMEM; 26780d9e12edf4 Bradley Grove 2013-08-23 691 goto error_exit; 26780d9e12edf4 Bradley Grove 2013-08-23 692 } 26780d9e12edf4 Bradley Grove 2013-08-23 693 26780d9e12edf4 Bradley Grove 2013-08-23 694 esas2r_claim_interrupts(a); 26780d9e12edf4 Bradley Grove 2013-08-23 695 9588d24e36003b Bradley Grove 2013-10-01 @696 if (test_bit(AF2_IRQ_CLAIMED, &a->flags2)) { 26780d9e12edf4 Bradley Grove 2013-08-23 697 /* 26780d9e12edf4 Bradley Grove 2013-08-23 698 * Now that system interrupt(s) are claimed, we can enable 26780d9e12edf4 Bradley Grove 2013-08-23 699 * chip interrupts. 26780d9e12edf4 Bradley Grove 2013-08-23 700 */ 26780d9e12edf4 Bradley Grove 2013-08-23 701 esas2r_enable_chip_interrupts(a); 26780d9e12edf4 Bradley Grove 2013-08-23 702 esas2r_kickoff_timer(a); 26780d9e12edf4 Bradley Grove 2013-08-23 703 } else { 26780d9e12edf4 Bradley Grove 2013-08-23 704 esas2r_debug("yikes, unable to claim IRQ"); 26780d9e12edf4 Bradley Grove 2013-08-23 705 esas2r_log(ESAS2R_LOG_CRIT, "could not re-claim IRQ!"); 26780d9e12edf4 Bradley Grove 2013-08-23 706 rez = -ENOMEM; 26780d9e12edf4 Bradley Grove 2013-08-23 707 goto error_exit; 26780d9e12edf4 Bradley Grove 2013-08-23 708 } 26780d9e12edf4 Bradley Grove 2013-08-23 709 26780d9e12edf4 Bradley Grove 2013-08-23 710 error_exit: d045ddf3e97346 Vaibhav Gupta 2020-07-17 711 esas2r_log_dev(ESAS2R_LOG_CRIT, dev, "esas2r_resume(): %d", 26780d9e12edf4 Bradley Grove 2013-08-23 712 rez); 26780d9e12edf4 Bradley Grove 2013-08-23 713 return rez; 26780d9e12edf4 Bradley Grove 2013-08-23 714 } 26780d9e12edf4 Bradley Grove 2013-08-23 715 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org