Hi Benoit,

I love your patch! Perhaps something to improve:

[auto build test WARNING on linuxtv-media/master]
[cannot apply to v5.4-rc1 next-20191004]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    
https://github.com/0day-ci/linux/commits/Benoit-Parrot/media-vpe-maintenance/20191005-061051
base:   git://linuxtv.org/media_tree.git master
reproduce: make htmldocs

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <l...@intel.com>

All warnings (new ones prefixed by >>):

   Warning: The Sphinx 'sphinx_rtd_theme' HTML theme was not found. Make sure 
you have the theme installed to produce pretty HTML output. Falling back to the 
default theme.
   WARNING: dot(1) not found, for better output quality install graphviz from 
http://www.graphviz.org
   WARNING: convert(1) not found, for SVG to PDF conversion install ImageMagick 
(https://www.imagemagick.org)
   include/linux/regulator/machine.h:196: warning: Function parameter or member 
'max_uV_step' not described in 'regulation_constraints'
   include/linux/regulator/driver.h:223: warning: Function parameter or member 
'resume' not described in 'regulator_ops'
   Error: Cannot open file drivers/dma-buf/reservation.c
   Error: Cannot open file drivers/dma-buf/reservation.c
   Error: Cannot open file drivers/dma-buf/reservation.c
   Error: Cannot open file include/linux/reservation.h
   Error: Cannot open file include/linux/reservation.h
   include/linux/spi/spi.h:190: warning: Function parameter or member 
'driver_override' not described in 'spi_device'
   drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c:335: warning: Excess function 
parameter 'dev' description in 'amdgpu_gem_prime_export'
   drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c:336: warning: Excess function 
parameter 'dev' description in 'amdgpu_gem_prime_export'
   drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c:142: warning: Function parameter or 
member 'blockable' not described in 'amdgpu_mn_read_lock'
   drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:347: warning: cannot understand 
function prototype: 'struct amdgpu_vm_pt_cursor '
   drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:348: warning: cannot understand 
function prototype: 'struct amdgpu_vm_pt_cursor '
   drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:494: warning: Function parameter or 
member 'start' not described in 'amdgpu_vm_pt_first_dfs'
   drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:546: warning: Function parameter or 
member 'adev' not described in 'for_each_amdgpu_vm_pt_dfs_safe'
   drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:546: warning: Function parameter or 
member 'vm' not described in 'for_each_amdgpu_vm_pt_dfs_safe'
   drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:546: warning: Function parameter or 
member 'start' not described in 'for_each_amdgpu_vm_pt_dfs_safe'
   drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:546: warning: Function parameter or 
member 'cursor' not described in 'for_each_amdgpu_vm_pt_dfs_safe'
   drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:546: warning: Function parameter or 
member 'entry' not described in 'for_each_amdgpu_vm_pt_dfs_safe'
   drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:823: warning: Function parameter or 
member 'level' not described in 'amdgpu_vm_bo_param'
   drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1285: warning: Function parameter or 
member 'params' not described in 'amdgpu_vm_update_flags'
   drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1285: warning: Function parameter or 
member 'bo' not described in 'amdgpu_vm_update_flags'
   drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1285: warning: Function parameter or 
member 'level' not described in 'amdgpu_vm_update_flags'
   drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1285: warning: Function parameter or 
member 'pe' not described in 'amdgpu_vm_update_flags'
   drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1285: warning: Function parameter or 
member 'addr' not described in 'amdgpu_vm_update_flags'
   drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1285: warning: Function parameter or 
member 'count' not described in 'amdgpu_vm_update_flags'
   drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1285: warning: Function parameter or 
member 'incr' not described in 'amdgpu_vm_update_flags'
   drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1285: warning: Function parameter or 
member 'flags' not described in 'amdgpu_vm_update_flags'
   drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:2823: warning: Function parameter or 
member 'pasid' not described in 'amdgpu_vm_make_compute'
   drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c:378: warning: Excess function 
parameter 'entry' description in 'amdgpu_irq_dispatch'
   drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c:379: warning: Function parameter or 
member 'ih' not described in 'amdgpu_irq_dispatch'
   drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c:379: warning: Excess function 
parameter 'entry' description in 'amdgpu_irq_dispatch'
   drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c:1: warning: no structured comments 
found
   drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c:1: warning: no structured comments 
found
   drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c:1: warning: 'pp_dpm_sclk pp_dpm_mclk 
pp_dpm_pcie' not found
   drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h:132: warning: Incorrect 
use of kernel-doc format: Documentation Makefile include scripts source 
@atomic_obj
   drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h:238: warning: Incorrect 
use of kernel-doc format: Documentation Makefile include scripts source 
gpu_info FW provided soc bounding box struct or 0 if not
   drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h:243: warning: Function 
parameter or member 'atomic_obj' not described in 'amdgpu_display_manager'
   drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h:243: warning: Function 
parameter or member 'backlight_link' not described in 'amdgpu_display_manager'
   drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h:243: warning: Function 
parameter or member 'backlight_caps' not described in 'amdgpu_display_manager'
   drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h:243: warning: Function 
parameter or member 'freesync_module' not described in 'amdgpu_display_manager'
   drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h:243: warning: Function 
parameter or member 'fw_dmcu' not described in 'amdgpu_display_manager'
   drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h:243: warning: Function 
parameter or member 'dmcu_fw_version' not described in 'amdgpu_display_manager'
   drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h:243: warning: Function 
parameter or member 'soc_bounding_box' not described in 'amdgpu_display_manager'
   drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c:1: warning: 
'register_hpd_handlers' not found
   drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c:1: warning: 
'dm_pflip_high_irq' not found
   drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c:1: warning: 
'dm_crtc_high_irq' not found
   drivers/gpio/gpiolib-of.c:92: warning: Excess function parameter 'dev' 
description in 'of_gpio_need_valid_mask'
   include/linux/i2c.h:337: warning: Function parameter or member 'init_irq' 
not described in 'i2c_client'
   mm/util.c:1: warning: 'get_user_pages_fast' not found
   mm/slab.c:4215: warning: Function parameter or member 'objp' not described 
in '__ksize'
   drivers/usb/typec/bus.c:1: warning: 'typec_altmode_unregister_driver' not 
found
   drivers/usb/typec/bus.c:1: warning: 'typec_altmode_register_driver' not found
   drivers/usb/typec/class.c:1: warning: 'typec_altmode_unregister_notifier' 
not found
   drivers/usb/typec/class.c:1: warning: 'typec_altmode_register_notifier' not 
found
   include/linux/w1.h:277: warning: Function parameter or member 
'of_match_table' not described in 'w1_family'
   fs/fs-writeback.c:913: warning: Excess function parameter 'nr_pages' 
description in 'cgroup_writeback_by_id'
   fs/direct-io.c:258: warning: Excess function parameter 'offset' description 
in 'dio_complete'
   fs/libfs.c:496: warning: Excess function parameter 'available' description 
in 'simple_write_end'
   fs/posix_acl.c:647: warning: Function parameter or member 'inode' not 
described in 'posix_acl_update_mode'
   fs/posix_acl.c:647: warning: Function parameter or member 'mode_p' not 
described in 'posix_acl_update_mode'
   fs/posix_acl.c:647: warning: Function parameter or member 'acl' not 
described in 'posix_acl_update_mode'
>> include/media/v4l2-common.h:472: warning: Enum value '@V4L2_ENC_UNKNOWN = 0' 
>> not described in enum 'v4l2_pixel_encoding'
>> include/media/v4l2-common.h:472: warning: Excess enum value 
>> 'V4L2_ENC_UNKNOWN' description in 'v4l2_pixel_encoding'
   kernel/dma/coherent.c:1: warning: no structured comments found
   include/linux/input/sparse-keymap.h:43: warning: Function parameter or 
member 'sw' not described in 'key_entry'
   lib/genalloc.c:1: warning: 'gen_pool_add_virt' not found
   lib/genalloc.c:1: warning: 'gen_pool_alloc' not found
   lib/genalloc.c:1: warning: 'gen_pool_free' not found
   lib/genalloc.c:1: warning: 'gen_pool_alloc_algo' not found
   include/linux/bitmap.h:341: warning: Function parameter or member 'nbits' 
not described in 'bitmap_or_equal'
   include/linux/rculist.h:374: warning: Excess function parameter 'cond' 
description in 'list_for_each_entry_rcu'
   include/linux/rculist.h:651: warning: Excess function parameter 'cond' 
description in 'hlist_for_each_entry_rcu'
   include/net/mac80211.h:4056: warning: Function parameter or member 
'sta_set_txpwr' not described in 'ieee80211_ops'
   include/net/mac80211.h:2018: warning: Function parameter or member 'txpwr' 
not described in 'ieee80211_sta'
   include/net/cfg80211.h:1185: warning: Function parameter or member 'txpwr' 
not described in 'station_parameters'
   include/linux/skbuff.h:888: warning: Function parameter or member 
'dev_scratch' not described in 'sk_buff'
   include/linux/skbuff.h:888: warning: Function parameter or member 'list' not 
described in 'sk_buff'
   include/linux/skbuff.h:888: warning: Function parameter or member 
'ip_defrag_offset' not described in 'sk_buff'
   include/linux/skbuff.h:888: warning: Function parameter or member 
'skb_mstamp_ns' not described in 'sk_buff'
   include/linux/skbuff.h:888: warning: Function parameter or member 
'__cloned_offset' not described in 'sk_buff'
   include/linux/skbuff.h:888: warning: Function parameter or member 
'head_frag' not described in 'sk_buff'
   include/linux/skbuff.h:888: warning: Function parameter or member 
'__pkt_type_offset' not described in 'sk_buff'
   include/linux/skbuff.h:888: warning: Function parameter or member 
'encapsulation' not described in 'sk_buff'
   include/linux/skbuff.h:888: warning: Function parameter or member 
'encap_hdr_csum' not described in 'sk_buff'
   include/linux/skbuff.h:888: warning: Function parameter or member 
'csum_valid' not described in 'sk_buff'
   include/linux/skbuff.h:888: warning: Function parameter or member 
'__pkt_vlan_present_offset' not described in 'sk_buff'
   include/linux/skbuff.h:888: warning: Function parameter or member 
'vlan_present' not described in 'sk_buff'
   include/linux/skbuff.h:888: warning: Function parameter or member 
'csum_complete_sw' not described in 'sk_buff'
   include/linux/skbuff.h:888: warning: Function parameter or member 
'csum_level' not described in 'sk_buff'
   include/linux/skbuff.h:888: warning: Function parameter or member 
'inner_protocol_type' not described in 'sk_buff'
   include/linux/skbuff.h:888: warning: Function parameter or member 
'remcsum_offload' not described in 'sk_buff'
   include/linux/skbuff.h:888: warning: Function parameter or member 
'sender_cpu' not described in 'sk_buff'
   include/linux/skbuff.h:888: warning: Function parameter or member 
'reserved_tailroom' not described in 'sk_buff'
   include/linux/skbuff.h:888: warning: Function parameter or member 
'inner_ipproto' not described in 'sk_buff'
   include/net/sock.h:233: warning: Function parameter or member 'skc_addrpair' 
not described in 'sock_common'
   include/net/sock.h:233: warning: Function parameter or member 'skc_portpair' 
not described in 'sock_common'
   include/net/sock.h:233: warning: Function parameter or member 'skc_ipv6only' 
not described in 'sock_common'
   include/net/sock.h:233: warning: Function parameter or member 
'skc_net_refcnt' not described in 'sock_common'
   include/net/sock.h:233: warning: Function parameter or member 'skc_v6_daddr' 
not described in 'sock_common'
   include/net/sock.h:233: warning: Function parameter or member 
'skc_v6_rcv_saddr' not described in 'sock_common'
   include/net/sock.h:233: warning: Function parameter or member 'skc_cookie' 
not described in 'sock_common'
   include/net/sock.h:233: warning: Function parameter or member 'skc_listener' 
not described in 'sock_common'
   include/net/sock.h:233: warning: Function parameter or member 'skc_tw_dr' 
not described in 'sock_common'
   include/net/sock.h:233: warning: Function parameter or member 'skc_rcv_wnd' 
not described in 'sock_common'
   include/net/sock.h:233: warning: Function parameter or member 
'skc_tw_rcv_nxt' not described in 'sock_common'
   include/net/sock.h:515: warning: Function parameter or member 
'sk_rx_skb_cache' not described in 'sock'
   include/net/sock.h:515: warning: Function parameter or member 'sk_wq_raw' 
not described in 'sock'
   include/net/sock.h:515: warning: Function parameter or member 
'tcp_rtx_queue' not described in 'sock'
   include/net/sock.h:515: warning: Function parameter or member 
'sk_tx_skb_cache' not described in 'sock'
   include/net/sock.h:515: warning: Function parameter or member 
'sk_route_forced_caps' not described in 'sock'
   include/net/sock.h:515: warning: Function parameter or member 
'sk_txtime_report_errors' not described in 'sock'
   include/net/sock.h:515: warning: Function parameter or member 
'sk_validate_xmit_skb' not described in 'sock'
   include/net/sock.h:515: warning: Function parameter or member 
'sk_bpf_storage' not described in 'sock'
   include/net/sock.h:2439: warning: Function parameter or member 
'tcp_rx_skb_cache_key' not described in 'DECLARE_STATIC_KEY_FALSE'
   include/net/sock.h:2439: warning: Excess function parameter 'sk' description 
in 'DECLARE_STATIC_KEY_FALSE'
   include/net/sock.h:2439: warning: Excess function parameter 'skb' 
description in 'DECLARE_STATIC_KEY_FALSE'
   include/linux/netdevice.h:2053: warning: Function parameter or member 
'gso_partial_features' not described in 'net_device'
   include/linux/netdevice.h:2053: warning: Function parameter or member 
'l3mdev_ops' not described in 'net_device'
   include/linux/netdevice.h:2053: warning: Function parameter or member 
'xfrmdev_ops' not described in 'net_device'
   include/linux/netdevice.h:2053: warning: Function parameter or member 
'tlsdev_ops' not described in 'net_device'
   include/linux/netdevice.h:2053: warning: Function parameter or member 
'name_assign_type' not described in 'net_device'
   include/linux/netdevice.h:2053: warning: Function parameter or member 
'ieee802154_ptr' not described in 'net_device'
   include/linux/netdevice.h:2053: warning: Function parameter or member 
'mpls_ptr' not described in 'net_device'
   include/linux/netdevice.h:2053: warning: Function parameter or member 
'xdp_prog' not described in 'net_device'
   include/linux/netdevice.h:2053: warning: Function parameter or member 
'gro_flush_timeout' not described in 'net_device'
   include/linux/netdevice.h:2053: warning: Function parameter or member 
'nf_hooks_ingress' not described in 'net_device'
   include/linux/netdevice.h:2053: warning: Function parameter or member 
'____cacheline_aligned_in_smp' not described in 'net_device'
   include/linux/netdevice.h:2053: warning: Function parameter or member 
'qdisc_hash' not described in 'net_device'
   include/linux/netdevice.h:2053: warning: Function parameter or member 
'xps_cpus_map' not described in 'net_device'
   include/linux/netdevice.h:2053: warning: Function parameter or member 
'xps_rxqs_map' not described in 'net_device'
   include/linux/phylink.h:56: warning: Function parameter or member 
'__ETHTOOL_DECLARE_LINK_MODE_MASK(advertising' not described in 
'phylink_link_state'
   include/linux/phylink.h:56: warning: Function parameter or member 
'__ETHTOOL_DECLARE_LINK_MODE_MASK(lp_advertising' not described in 
'phylink_link_state'
   drivers/net/phy/phylink.c:595: warning: Function parameter or member 
'config' not described in 'phylink_create'
   drivers/net/phy/phylink.c:595: warning: Excess function parameter 'ndev' 
description in 'phylink_create'
   include/drm/drm_modeset_helper_vtables.h:1053: warning: Function parameter 
or member 'prepare_writeback_job' not described in 'drm_connector_helper_funcs'
   include/drm/drm_modeset_helper_vtables.h:1053: warning: Function parameter 
or member 'cleanup_writeback_job' not described in 'drm_connector_helper_funcs'
   include/drm/drm_atomic_state_helper.h:1: warning: no structured comments 
found
   include/drm/drm_gem_shmem_helper.h:87: warning: Function parameter or member 
'madv' not described in 'drm_gem_shmem_object'
   include/drm/drm_gem_shmem_helper.h:87: warning: Function parameter or member 
'madv_list' not described in 'drm_gem_shmem_object'
   drivers/gpu/drm/i915/display/intel_dpll_mgr.h:158: warning: Enum value 
'DPLL_ID_TGL_MGPLL5' not described in enum 'intel_dpll_id'
   drivers/gpu/drm/i915/display/intel_dpll_mgr.h:158: warning: Enum value 
'DPLL_ID_TGL_MGPLL6' not described in enum 'intel_dpll_id'
   drivers/gpu/drm/i915/display/intel_dpll_mgr.h:158: warning: Excess enum 
value 'DPLL_ID_TGL_TCPLL5' description in 'intel_dpll_id'
   drivers/gpu/drm/i915/display/intel_dpll_mgr.h:158: warning: Excess enum 
value 'DPLL_ID_TGL_TCPLL6' description in 'intel_dpll_id'
   drivers/gpu/drm/i915/display/intel_dpll_mgr.h:342: warning: Function 
parameter or member 'wakeref' not described in 'intel_shared_dpll'
   Error: Cannot open file drivers/gpu/drm/i915/i915_gem_batch_pool.c
   Error: Cannot open file drivers/gpu/drm/i915/i915_gem_batch_pool.c
   Error: Cannot open file drivers/gpu/drm/i915/i915_gem_batch_pool.c
   drivers/gpu/drm/i915/i915_drv.h:1129: warning: Incorrect use of kernel-doc 
format: Documentation Makefile include scripts source The OA context specific 
information.
   drivers/gpu/drm/i915/i915_drv.h:1143: warning: Incorrect use of kernel-doc 
format: Documentation Makefile include scripts source State of the OA buffer.
   drivers/gpu/drm/i915/i915_drv.h:1154: warning: Incorrect use of kernel-doc 
format: Documentation Makefile include scripts source Locks reads and writes to 
all head/tail state
   drivers/gpu/drm/i915/i915_drv.h:1176: warning: Incorrect use of kernel-doc 
format: Documentation Makefile include scripts source One 'aging' tail pointer 
and one 'aged' tail pointer ready to
   drivers/gpu/drm/i915/i915_drv.h:1188: warning: Incorrect use of kernel-doc 
format: Documentation Makefile include scripts source Index for the aged tail 
ready to read() data up to.
   drivers/gpu/drm/i915/i915_drv.h:1193: warning: Incorrect use of kernel-doc 
format: Documentation Makefile include scripts source A monotonic timestamp for 
when the current aging tail pointer
   drivers/gpu/drm/i915/i915_drv.h:1199: warning: Incorrect use of kernel-doc 
format: Documentation Makefile include scripts source Although we can always 
read back the head pointer register,
   drivers/gpu/drm/i915/i915_drv.h:1207: warning: Function parameter or member 
'pinned_ctx' not described in 'i915_perf_stream'
   drivers/gpu/drm/i915/i915_drv.h:1207: warning: Function parameter or member 
'specific_ctx_id' not described in 'i915_perf_stream'
   drivers/gpu/drm/i915/i915_drv.h:1207: warning: Function parameter or member 
'specific_ctx_id_mask' not described in 'i915_perf_stream'
   drivers/gpu/drm/i915/i915_drv.h:1207: warning: Function parameter or member 
'poll_check_timer' not described in 'i915_perf_stream'
   drivers/gpu/drm/i915/i915_drv.h:1207: warning: Function parameter or member 
'poll_wq' not described in 'i915_perf_stream'
   drivers/gpu/drm/i915/i915_drv.h:1207: warning: Function parameter or member 
'pollin' not described in 'i915_perf_stream'
   drivers/gpu/drm/i915/i915_drv.h:1207: warning: Function parameter or member 
'periodic' not described in 'i915_perf_stream'
   drivers/gpu/drm/i915/i915_drv.h:1207: warning: Function parameter or member 
'period_exponent' not described in 'i915_perf_stream'
   drivers/gpu/drm/i915/i915_drv.h:1207: warning: Function parameter or member 
'oa_buffer' not described in 'i915_perf_stream'

vim +472 include/media/v4l2-common.h

   458  
   459  /**
   460   * enum v4l2_pixel_encoding - specifies the pixel encoding value
   461   *
   462   * @V4L2_ENC_UNKNOWN:   Pixel encoding is unknown/un-initialized
   463   * @V4L2_ENC_YUV:       Pixel encoding is YUV
   464   * @V4L2_ENC_RGB:       Pixel encoding is RGB
   465   * @V4L2_ENC_BAYER:     Pixel encoding is Bayer
   466   */
   467  enum v4l2_pixel_encoding {
   468          @V4L2_ENC_UNKNOWN = 0,
   469          V4L2_ENC_YUV = 1,
   470          V4L2_ENC_RGB = 2,
   471          V4L2_ENC_BAYER = 3,
 > 472  };
   473  

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

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