tree: https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git pending-5.10 head: 28d8a1bafb1d3ba5b9e84a0ef9f7505340737187 commit: 780010795b4baf104c7342591ece9396b522d751 [331/511] ataflop: use a separate gendisk for each media format config: m68k-defconfig (attached as .config) compiler: m68k-linux-gcc (GCC) 11.2.0 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 # https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git/c... git remote add sashal-stable https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git git fetch --no-tags sashal-stable pending-5.10 git checkout 780010795b4baf104c7342591ece9396b522d751 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=m68k 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 >>): drivers/block/ataflop.c: In function 'atari_floppy_init': 2013 | ret = __register_blkdev(FLOPPY_MAJOR, "fd", ataflop_probe); | ^~~~~~~~~~~~~~~~~ | unregister_blkdev cc1: some warnings being treated as errors vim +2013 drivers/block/ataflop.c 2002 2003 static int __init atari_floppy_init (void) 2004 { 2005 int i; 2006 int ret; 2007 2008 if (!MACH_IS_ATARI) 2009 /* Amiga, Mac, ... don't have Atari-compatible floppy :-) */ 2010 return -ENODEV; 2011 2012 mutex_lock(&ataflop_probe_lock); 2014 if (ret) 2015 goto out_unlock; 2016 2017 for (i = 0; i < FD_MAX_UNITS; i++) { 2018 memset(&unit[i].tag_set, 0, sizeof(unit[i].tag_set)); 2019 unit[i].tag_set.ops = &ataflop_mq_ops; 2020 unit[i].tag_set.nr_hw_queues = 1; 2021 unit[i].tag_set.nr_maps = 1; 2022 unit[i].tag_set.queue_depth = 2; 2023 unit[i].tag_set.numa_node = NUMA_NO_NODE; 2024 unit[i].tag_set.flags = BLK_MQ_F_SHOULD_MERGE; 2025 ret = blk_mq_alloc_tag_set(&unit[i].tag_set); 2026 if (ret) 2027 goto err; 2028 2029 ret = ataflop_alloc_disk(i, 0); 2030 if (ret) { 2031 blk_mq_free_tag_set(&unit[i].tag_set); 2032 goto err; 2033 } 2034 } 2035 2036 if (UseTrackbuffer < 0) 2037 /* not set by user -> use default: for now, we turn 2038 track buffering off for all Medusas, though it 2039 could be used with ones that have a counter 2040 card. But the test is too hard :-( */ 2041 UseTrackbuffer = !MACH_IS_MEDUSA; 2042 2043 /* initialize variables */ 2044 SelectedDrive = -1; 2045 BufferDrive = -1; 2046 2047 DMABuffer = atari_stram_alloc(BUFFER_SIZE+512, "ataflop"); 2048 if (!DMABuffer) { 2049 printk(KERN_ERR "atari_floppy_init: cannot get dma buffer\n"); 2050 ret = -ENOMEM; 2051 goto err; 2052 } 2053 TrackBuffer = DMABuffer + 512; 2054 PhysDMABuffer = atari_stram_to_phys(DMABuffer); 2055 PhysTrackBuffer = virt_to_phys(TrackBuffer); 2056 BufferDrive = BufferSide = BufferTrack = -1; 2057 2058 for (i = 0; i < FD_MAX_UNITS; i++) { 2059 unit[i].track = -1; 2060 unit[i].flags = 0; 2061 add_disk(unit[i].disk[0]); 2062 } 2063 2064 printk(KERN_INFO "Atari floppy driver: max. %cD, %strack buffering\n", 2065 DriveType == 0 ? 'D' : DriveType == 1 ? 'H' : 'E', 2066 UseTrackbuffer ? "" : "no "); 2067 config_types(); 2068 2069 return 0; 2070 2071 err: 2072 while (--i >= 0) { 2073 blk_cleanup_queue(unit[i].disk[0]->queue); 2074 put_disk(unit[i].disk[0]); 2075 blk_mq_free_tag_set(&unit[i].tag_set); 2076 } 2077 2078 unregister_blkdev(FLOPPY_MAJOR, "fd"); 2079 out_unlock: 2080 mutex_unlock(&ataflop_probe_lock); 2081 return ret; 2082 } 2083 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org