drivers/vfio/vfio.c:527: warning: expecting prototype for Device objects(). Prototype was for vfio_device_put() instead

From: kernel test robot
Date: Tue Sep 28 2021 - 14:11:40 EST

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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: d33bec7b3dfa36691ed53ccaaf187d90b53be852
commit: 0bfc6a4ea63c2adac71a824397ef48f28dbc5e47 vfio: Split creation of a vfio_device into init and register ops
date: 6 months ago
config: microblaze-buildonly-randconfig-r004-20210927 (attached as .config)
compiler: microblaze-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/torvalds/linux.git/commit/?id=0bfc6a4ea63c2adac71a824397ef48f28dbc5e47
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 0bfc6a4ea63c2adac71a824397ef48f28dbc5e47
# save the attached .config to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=microblaze SHELL=/bin/bash arch/microblaze/kernel/ drivers/base/ drivers/char/ drivers/clk/ drivers/clocksource/ drivers/dax/ drivers/firewire/ drivers/gpu/drm/amd/amdgpu/ drivers/gpu/drm/amd/display/amdgpu_dm/ drivers/gpu/drm/amd/display/dc/dce/ drivers/gpu/drm/amd/display/dc/dce110/ drivers/gpu/drm/exynos/ drivers/i3c/ drivers/iio/accel/ drivers/memstick/host/ drivers/nvmem/ drivers/pci/ drivers/power/supply/ drivers/rapidio/ drivers/rtc/ drivers/soc/qcom/ drivers/tty/ drivers/vfio/ drivers/video/fbdev/via/ drivers/w1/masters/ fs/ init/ kernel/ lib/ mm/ net/

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/vfio/vfio.c:214: warning: Function parameter or member 'ops' not described in 'vfio_register_iommu_driver'
drivers/vfio/vfio.c:214: warning: expecting prototype for IOMMU driver registration(). Prototype was for vfio_register_iommu_driver() instead
drivers/vfio/vfio.c:263: warning: Function parameter or member 'group' not described in 'vfio_alloc_group_minor'
drivers/vfio/vfio.c:263: warning: expecting prototype for free(). Prototype was for vfio_alloc_group_minor() instead
drivers/vfio/vfio.c:283: warning: Function parameter or member 'container' not described in 'vfio_container_get'
drivers/vfio/vfio.c:283: warning: expecting prototype for Container objects(). Prototype was for vfio_container_get() instead
drivers/vfio/vfio.c:315: warning: Function parameter or member 'iommu_group' not described in 'vfio_create_group'
drivers/vfio/vfio.c:315: warning: expecting prototype for Group objects(). Prototype was for vfio_create_group() instead
drivers/vfio/vfio.c:527: warning: Function parameter or member 'device' not described in 'vfio_device_put'
>> drivers/vfio/vfio.c:527: warning: expecting prototype for Device objects(). Prototype was for vfio_device_put() instead
drivers/vfio/vfio.c:633: warning: Function parameter or member 'group' not described in 'vfio_group_nb_add_dev'
drivers/vfio/vfio.c:633: warning: Function parameter or member 'dev' not described in 'vfio_group_nb_add_dev'
drivers/vfio/vfio.c:633: warning: expecting prototype for Async device support(). Prototype was for vfio_group_nb_add_dev() instead
drivers/vfio/vfio.c:745: warning: Function parameter or member 'device' not described in 'vfio_init_group_dev'
drivers/vfio/vfio.c:745: warning: Function parameter or member 'dev' not described in 'vfio_init_group_dev'
drivers/vfio/vfio.c:745: warning: Function parameter or member 'ops' not described in 'vfio_init_group_dev'
drivers/vfio/vfio.c:745: warning: Function parameter or member 'device_data' not described in 'vfio_init_group_dev'
drivers/vfio/vfio.c:745: warning: expecting prototype for VFIO driver API(). Prototype was for vfio_init_group_dev() instead
drivers/vfio/vfio.c:833: warning: Function parameter or member 'dev' not described in 'vfio_device_get_from_dev'
drivers/vfio/vfio.c:833: warning: expecting prototype for Even if the(). Prototype was for vfio_device_get_from_dev() instead
drivers/vfio/vfio.c:982: warning: Function parameter or member 'container' not described in 'vfio_ioctl_check_extension'
drivers/vfio/vfio.c:982: warning: Function parameter or member 'arg' not described in 'vfio_ioctl_check_extension'
drivers/vfio/vfio.c:982: warning: expecting prototype for vfio(). Prototype was for vfio_ioctl_check_extension() instead
drivers/vfio/vfio.c:1258: warning: Function parameter or member 'group' not described in '__vfio_group_unset_container'
drivers/vfio/vfio.c:1258: warning: expecting prototype for GROUP(). Prototype was for __vfio_group_unset_container() instead
drivers/vfio/vfio.c:1593: warning: Function parameter or member 'inode' not described in 'vfio_device_fops_release'
drivers/vfio/vfio.c:1593: warning: Function parameter or member 'filep' not described in 'vfio_device_fops_release'
drivers/vfio/vfio.c:1593: warning: expecting prototype for VFIO Device fd(). Prototype was for vfio_device_fops_release() instead
drivers/vfio/vfio.c:1660: warning: wrong kernel-doc identifier on line:
* External user API, exported by symbols to be linked dynamically.
drivers/vfio/vfio.c:1705: warning: wrong kernel-doc identifier on line:
* External user API, exported by symbols to be linked dynamically.
drivers/vfio/vfio.c:1784: warning: Function parameter or member 'caps' not described in 'vfio_info_cap_add'
drivers/vfio/vfio.c:1784: warning: Function parameter or member 'size' not described in 'vfio_info_cap_add'
drivers/vfio/vfio.c:1784: warning: Function parameter or member 'id' not described in 'vfio_info_cap_add'
drivers/vfio/vfio.c:1784: warning: Function parameter or member 'version' not described in 'vfio_info_cap_add'
drivers/vfio/vfio.c:1784: warning: expecting prototype for Sub(). Prototype was for vfio_info_cap_add() instead
drivers/vfio/vfio.c:2321: warning: Function parameter or member 'dev' not described in 'vfio_devnode'
drivers/vfio/vfio.c:2321: warning: Function parameter or member 'mode' not described in 'vfio_devnode'
drivers/vfio/vfio.c:2321: warning: expecting prototype for class support(). Prototype was for vfio_devnode() instead

vim +527 drivers/vfio/vfio.c

7ed3ea8a71187a Kirti Wankhede 2016-11-17 521
cba3345cc494ad Alex Williamson 2012-07-31 522 /**
cba3345cc494ad Alex Williamson 2012-07-31 523 * Device objects - create, release, get, put, search
cba3345cc494ad Alex Williamson 2012-07-31 524 */
cba3345cc494ad Alex Williamson 2012-07-31 525 /* Device reference always implies a group reference */
44f507163d9e51 Vijay Mohan Pandarathil 2013-03-11 526 void vfio_device_put(struct vfio_device *device)
cba3345cc494ad Alex Williamson 2012-07-31 @527 {
5e42c999445bd0 Jason Gunthorpe 2021-03-30 528 if (refcount_dec_and_test(&device->refcount))
5e42c999445bd0 Jason Gunthorpe 2021-03-30 529 complete(&device->comp);
cba3345cc494ad Alex Williamson 2012-07-31 530 }
44f507163d9e51 Vijay Mohan Pandarathil 2013-03-11 531 EXPORT_SYMBOL_GPL(vfio_device_put);
cba3345cc494ad Alex Williamson 2012-07-31 532

:::::: The code at line 527 was first introduced by commit
:::::: cba3345cc494ad286ca8823f44b2c16cae496679 vfio: VFIO core

:::::: TO: Alex Williamson <alex.williamson@xxxxxxxxxx>
:::::: CC: Alex Williamson <alex.williamson@xxxxxxxxxx>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx

Attachment: .config.gz
Description: application/gzip

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