Hi Kashyap, I love your patch! Perhaps something to improve: [auto build test WARNING on 0eedceafd3a63fd082743c914853ef4b9247dbe6] url: https://github.com/0day-ci/linux/commits/Kashyap-Desai/io_uring-iopoll-in-scsi-layer/20201203-194918 base: 0eedceafd3a63fd082743c914853ef4b9247dbe6 config: i386-randconfig-s001-20201203 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.3-179-ga00755aa-dirty # https://github.com/0day-ci/linux/commit/f2b4b005fc618696e1b343f91cf9907427e0df91 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Kashyap-Desai/io_uring-iopoll-in-scsi-layer/20201203-194918 git checkout f2b4b005fc618696e1b343f91cf9907427e0df91 # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/scsi/megaraid/megaraid_sas_fusion.c:3652:5: warning: no previous prototype for 'megasas_blk_mq_poll' [-Wmissing-prototypes] 3652 | int megasas_blk_mq_poll(struct Scsi_Host *shost, unsigned int queue_num) | ^~~~~~~~~~~~~~~~~~~ vim +/megasas_blk_mq_poll +3652 drivers/scsi/megaraid/megaraid_sas_fusion.c 3651 > 3652 int megasas_blk_mq_poll(struct Scsi_Host *shost, unsigned int queue_num) 3653 { 3654 3655 struct megasas_instance *instance; 3656 int num_entries = 0; 3657 struct fusion_context *fusion; 3658 3659 instance = (struct megasas_instance *)shost->hostdata; 3660 3661 fusion = instance->ctrl_context; 3662 3663 queue_num = queue_num + instance->low_latency_index_start; 3664 3665 if (!atomic_add_unless(&fusion->busy_mq_poll[queue_num], 1, 1)) 3666 return 0; 3667 3668 num_entries = complete_cmd_fusion(instance, queue_num, NULL); 3669 atomic_dec(&fusion->busy_mq_poll[queue_num]); 3670 3671 return num_entries; 3672 } 3673 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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