On 5 Feb 15:15, kernel test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master > head: 23e11d0318521e8693459b0e4d23aec614b3b68b > commit: d412ace11144aa2bf692c7cf9778351efc15c827 [3841/4021] workqueue: make wq_subsys const > config: i386-buildonly-randconfig-003-20240205 (https://download.01.org/0day-ci/archive/20240205/202402051505.kM9Rr3CJ-lkp@xxxxxxxxx/config) > compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18) > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240205/202402051505.kM9Rr3CJ-lkp@xxxxxxxxx/reproduce) > > If you fix the issue in a separate patch/commit (i.e. not just a new version of > the same patch/commit), kindly add following tags > | Reported-by: kernel test robot <lkp@xxxxxxxxx> > | Closes: https://lore.kernel.org/oe-kbuild-all/202402051505.kM9Rr3CJ-lkp@xxxxxxxxx/ > > Note: the linux-next/master HEAD 23e11d0318521e8693459b0e4d23aec614b3b68b builds fine. > It may have been fixed somewhere. > > All errors (new ones prefixed by >>): > > >> kernel/workqueue.c:6798:32: error: passing 'const struct bus_type *' to parameter of type 'struct bus_type *' discards qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers] > 6798 | err = subsys_virtual_register(&wq_subsys, NULL); > | ^~~~~~~~~~ > include/linux/device.h:77:46: note: passing argument to parameter 'subsys' here > 77 | int subsys_virtual_register(struct bus_type *subsys, I'm not sure how to flag this as invalid, since this is fixed already in 32f78abe59c7 ("driver core: bus: constantify subsys_register() calls") > | ^ > 1 error generated. > > > vim +6798 kernel/workqueue.c > > b05a79280b346e Frederic Weisbecker 2015-04-27 6792 > 6ba94429c8e7b8 Frederic Weisbecker 2015-04-02 6793 static int __init wq_sysfs_init(void) > 2d3854a37e8b76 Rusty Russell 2008-11-05 6794 { > 686f669780276d Greg Kroah-Hartman 2023-03-13 6795 struct device *dev_root; > b05a79280b346e Frederic Weisbecker 2015-04-27 6796 int err; > b05a79280b346e Frederic Weisbecker 2015-04-27 6797 > b05a79280b346e Frederic Weisbecker 2015-04-27 @6798 err = subsys_virtual_register(&wq_subsys, NULL); > b05a79280b346e Frederic Weisbecker 2015-04-27 6799 if (err) > b05a79280b346e Frederic Weisbecker 2015-04-27 6800 return err; > b05a79280b346e Frederic Weisbecker 2015-04-27 6801 > 686f669780276d Greg Kroah-Hartman 2023-03-13 6802 dev_root = bus_get_dev_root(&wq_subsys); > 686f669780276d Greg Kroah-Hartman 2023-03-13 6803 if (dev_root) { > fe28f631fa941f Waiman Long 2023-10-25 6804 struct device_attribute *attr; > fe28f631fa941f Waiman Long 2023-10-25 6805 > fe28f631fa941f Waiman Long 2023-10-25 6806 for (attr = wq_sysfs_cpumask_attrs; attr->attr.name; attr++) { > fe28f631fa941f Waiman Long 2023-10-25 6807 err = device_create_file(dev_root, attr); > fe28f631fa941f Waiman Long 2023-10-25 6808 if (err) > fe28f631fa941f Waiman Long 2023-10-25 6809 break; > fe28f631fa941f Waiman Long 2023-10-25 6810 } > 686f669780276d Greg Kroah-Hartman 2023-03-13 6811 put_device(dev_root); > 686f669780276d Greg Kroah-Hartman 2023-03-13 6812 } > 686f669780276d Greg Kroah-Hartman 2023-03-13 6813 return err; > 2d3854a37e8b76 Rusty Russell 2008-11-05 6814 } > 6ba94429c8e7b8 Frederic Weisbecker 2015-04-02 6815 core_initcall(wq_sysfs_init); > 2d3854a37e8b76 Rusty Russell 2008-11-05 6816 > > :::::: The code at line 6798 was first introduced by commit > :::::: b05a79280b346eb24ddb73b39988398015291075 workqueue: Create low-level unbound workqueues cpumask > > :::::: TO: Frederic Weisbecker <fweisbec@xxxxxxxxx> > :::::: CC: Tejun Heo <tj@xxxxxxxxxx> > > -- > 0-DAY CI Kernel Test Service > https://github.com/intel/lkp-tests/wiki
