Hi Fam, [auto build test WARNING on linus/master] [also build test WARNING on v4.8-rc2 next-20160817] [cannot apply to linux/master] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/Fam-Zheng/Fix-issue-with-KOBJ_ADD-uevent-versus-disk-attributes/20160817-152900 config: powerpc-allmodconfig (attached as .config) compiler: powerpc64-linux-gnu-gcc (Debian 5.4.0-6) 5.4.0 20160609 reproduce: wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=powerpc All warnings (new ones prefixed by >>): drivers/nvme/host/core.c: In function 'nvme_alloc_ns': >> drivers/nvme/host/core.c:1689:42: warning: passing argument 3 of >> 'device_add_disk' discards 'const' qualifier from pointer target type >> [-Wdiscarded-qualifiers] device_add_disk(ctrl->device, ns->disk, &nvme_ns_attr_group); ^ In file included from include/linux/blkdev.h:9:0, from drivers/nvme/host/core.c:15: include/linux/genhd.h:416:12: note: expected 'struct attribute_group *' but argument is of type 'const struct attribute_group *' extern int device_add_disk(struct device *parent, struct gendisk *disk, ^ vim +1689 drivers/nvme/host/core.c 1673 disk->private_data = ns; 1674 disk->queue = ns->queue; 1675 disk->flags = GENHD_FL_EXT_DEVT; 1676 sprintf(disk->disk_name, "nvme%dn%d", ctrl->instance, ns->instance); 1677 1678 if (nvme_revalidate_disk(ns->disk)) 1679 goto out_free_disk; 1680 1681 mutex_lock(&ctrl->namespaces_mutex); 1682 list_add_tail(&ns->list, &ctrl->namespaces); 1683 mutex_unlock(&ctrl->namespaces_mutex); 1684 1685 kref_get(&ctrl->kref); 1686 if (ns->type == NVME_NS_LIGHTNVM) 1687 return; 1688 > 1689 device_add_disk(ctrl->device, ns->disk, &nvme_ns_attr_group); 1690 return; 1691 out_free_disk: 1692 kfree(disk); 1693 out_free_queue: 1694 blk_cleanup_queue(ns->queue); 1695 out_release_instance: 1696 ida_simple_remove(&ctrl->ns_ida, ns->instance); 1697 out_free_ns: --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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