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Message-ID: <201610300501.MjxoWVOy%fengguang.wu@intel.com>
Date:   Sun, 30 Oct 2016 06:01:44 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Paul Gortmaker <paul.gortmaker@...driver.com>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Paul Gortmaker <paul.gortmaker@...driver.com>,
        Matias Bjorling <mb@...htnvm.io>
Subject: Re: [PATCH 1/3] lightnvm: make core.c explicitly non-modular

Hi Paul,

[auto build test ERROR on linus/master]
[also build test ERROR on v4.9-rc3 next-20161028]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
[Suggest to use git(>=2.9.0) format-patch --base=<commit> (or --base=auto for convenience) to record what (public, well-known) commit your patch series was built on]
[Check https://git-scm.com/docs/git-format-patch for more information]

url:    https://github.com/0day-ci/linux/commits/Paul-Gortmaker/lightnvm-make-core-c-explicitly-non-modular/20161030-044459
config: i386-randconfig-x073-201644 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All error/warnings (new ones prefixed by >>):

>> drivers/lightnvm/core.c:1169:1: warning: data definition has no type or storage class
    builtin_misc_device(_nvm_misc);
    ^~~~~~~~~~~~~~~~~~~
>> drivers/lightnvm/core.c:1169:1: error: type defaults to 'int' in declaration of 'builtin_misc_device' [-Werror=implicit-int]
>> drivers/lightnvm/core.c:1169:1: warning: parameter names (without types) in function declaration
>> drivers/lightnvm/core.c:1163:26: warning: '_nvm_misc' defined but not used [-Wunused-variable]
    static struct miscdevice _nvm_misc = {
                             ^~~~~~~~~
   Cyclomatic Complexity 5 include/linux/compiler.h:__write_once_size
   Cyclomatic Complexity 1 arch/x86/include/asm/bitops.h:fls
   Cyclomatic Complexity 1 include/linux/log2.h:__ilog2_u32
   Cyclomatic Complexity 1 include/linux/list.h:__list_add
   Cyclomatic Complexity 1 include/linux/list.h:list_add
   Cyclomatic Complexity 1 include/linux/list.h:__list_del
   Cyclomatic Complexity 1 include/linux/list.h:list_del
   Cyclomatic Complexity 1 include/asm-generic/getorder.h:__get_order
   Cyclomatic Complexity 1 include/linux/spinlock.h:spinlock_check
   Cyclomatic Complexity 1 include/linux/slab.h:__kmalloc_node
   Cyclomatic Complexity 1 include/linux/slab.h:kmalloc_order_trace
   Cyclomatic Complexity 67 include/linux/slab.h:kmalloc_large
   Cyclomatic Complexity 3 include/linux/slab.h:kmalloc
   Cyclomatic Complexity 1 include/linux/slab.h:kmalloc_node
   Cyclomatic Complexity 1 include/linux/slab.h:kzalloc_node
   Cyclomatic Complexity 1 include/linux/lightnvm.h:generic_to_dev_addr
   Cyclomatic Complexity 1 include/linux/lightnvm.h:dev_to_generic_addr
   Cyclomatic Complexity 1 drivers/lightnvm/core.c:nvm_dev_dma_alloc
   Cyclomatic Complexity 1 drivers/lightnvm/core.c:nvm_dev_dma_free
   Cyclomatic Complexity 1 drivers/lightnvm/core.c:nvm_get_blk
   Cyclomatic Complexity 1 drivers/lightnvm/core.c:nvm_put_blk
   Cyclomatic Complexity 1 drivers/lightnvm/core.c:nvm_mark_blk
   Cyclomatic Complexity 1 drivers/lightnvm/core.c:nvm_submit_io
   Cyclomatic Complexity 1 drivers/lightnvm/core.c:nvm_erase_blk
   Cyclomatic Complexity 3 drivers/lightnvm/core.c:nvm_addr_to_generic_mode
   Cyclomatic Complexity 3 drivers/lightnvm/core.c:nvm_generic_to_addr_mode
   Cyclomatic Complexity 2 drivers/lightnvm/core.c:nvm_free_rqd_ppalist
   Cyclomatic Complexity 1 drivers/lightnvm/core.c:nvm_end_io
   Cyclomatic Complexity 5 drivers/lightnvm/core.c:nvm_bb_tbl_fold
   Cyclomatic Complexity 1 drivers/lightnvm/core.c:nvm_get_bb_tbl
   Cyclomatic Complexity 2 drivers/lightnvm/core.c:nvm_free_mgr
   Cyclomatic Complexity 1 drivers/lightnvm/core.c:nvm_alloc_dev
   Cyclomatic Complexity 3 drivers/lightnvm/core.c:nvm_find_mgr_type
   Cyclomatic Complexity 5 drivers/lightnvm/core.c:nvm_find_target_type
   Cyclomatic Complexity 2 drivers/lightnvm/core.c:nvm_register_tgt_type
   Cyclomatic Complexity 2 drivers/lightnvm/core.c:nvm_unregister_tgt_type
   Cyclomatic Complexity 2 drivers/lightnvm/core.c:nvm_unregister_mgr
   Cyclomatic Complexity 3 include/linux/err.h:IS_ERR_OR_NULL
   Cyclomatic Complexity 8 drivers/lightnvm/core.c:nvm_init_mgr
   Cyclomatic Complexity 4 drivers/lightnvm/core.c:nvm_register_mgr
   Cyclomatic Complexity 9 drivers/lightnvm/core.c:nvm_set_rqd_ppalist
   Cyclomatic Complexity 3 drivers/lightnvm/core.c:nvm_erase_ppa
   Cyclomatic Complexity 1 drivers/lightnvm/core.c:nvm_end_io_sync
   Cyclomatic Complexity 1 include/linux/completion.h:init_completion
   Cyclomatic Complexity 5 drivers/lightnvm/core.c:__nvm_submit_ppa
   Cyclomatic Complexity 3 drivers/lightnvm/core.c:nvm_submit_ppa_list
   Cyclomatic Complexity 2 drivers/lightnvm/core.c:nvm_submit_ppa
   Cyclomatic Complexity 5 include/linux/slab.h:kmalloc_array
   Cyclomatic Complexity 1 include/linux/slab.h:kcalloc
   Cyclomatic Complexity 3 drivers/lightnvm/core.c:nvm_init_slc_tbl
   Cyclomatic Complexity 5 drivers/lightnvm/core.c:nvm_init_mlc_tbl
   Cyclomatic Complexity 9 drivers/lightnvm/core.c:nvm_core_init
   Cyclomatic Complexity 7 drivers/lightnvm/core.c:nvm_init
   Cyclomatic Complexity 10 drivers/lightnvm/core.c:nvm_register
   Cyclomatic Complexity 1 drivers/lightnvm/core.c:nvm_exit
   Cyclomatic Complexity 1 drivers/lightnvm/core.c:nvm_unregister
   Cyclomatic Complexity 3 drivers/lightnvm/core.c:nvm_free
   cc1: some warnings being treated as errors

vim +1169 drivers/lightnvm/core.c

  1157		.open = nonseekable_open,
  1158		.unlocked_ioctl = nvm_ctl_ioctl,
  1159		.owner = THIS_MODULE,
  1160		.llseek  = noop_llseek,
  1161	};
  1162	
> 1163	static struct miscdevice _nvm_misc = {
  1164		.minor		= MISC_DYNAMIC_MINOR,
  1165		.name		= "lightnvm",
  1166		.nodename	= "lightnvm/control",
  1167		.fops		= &_ctl_fops,
  1168	};
> 1169	builtin_misc_device(_nvm_misc);

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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