Re: [PATCH 4/8] drm/fb-helper: Add fb_deferred_io support

kbuild test robot
2016-04-20T16:42:57Z

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Hi,

[auto build test WARNING on drm/drm-next]
[also build test WARNING on v4.6-rc4 next-20160420]
[if your patch is applied to the wrong git tree, please drop us a note to help improving the system]

url: https://github.com/0day-ci/linux/commits/Noralf-Tr-nnes/drm-Add-fbdev-deferred-io-support-to-helpers/20160420-234359
base: git://people.freedesktop.org/~airlied/linux.git drm-next
reproduce: make htmldocs

All warnings (new ones prefixed by >>):

drivers/gpu/drm/i915/i915_irq.c:2663: warning: No description found for parameter 'fmt'
include/drm/drm_crtc.h:364: warning: No description found for parameter 'mode_blob'
include/drm/drm_crtc.h:779: warning: No description found for parameter 'name'
include/drm/drm_crtc.h:1238: warning: No description found for parameter 'connector_id'
include/drm/drm_crtc.h:1238: warning: No description found for parameter 'tile_blob_ptr'
include/drm/drm_crtc.h:1277: warning: No description found for parameter 'rotation'
include/drm/drm_crtc.h:1539: warning: No description found for parameter 'name'
include/drm/drm_crtc.h:1539: warning: No description found for parameter 'mutex'
include/drm/drm_crtc.h:1539: warning: No description found for parameter 'helper_private'
include/drm/drm_crtc.h:2175: warning: No description found for parameter 'tile_idr'
include/drm/drm_crtc.h:2175: warning: No description found for parameter 'connector_ida'
include/drm/drm_crtc.h:2175: warning: No description found for parameter 'delayed_event'
include/drm/drm_crtc.h:2175: warning: No description found for parameter 'edid_property'
include/drm/drm_crtc.h:2175: warning: No description found for parameter 'dpms_property'
include/drm/drm_crtc.h:2175: warning: No description found for parameter 'path_property'
include/drm/drm_crtc.h:2175: warning: No description found for parameter 'tile_property'
include/drm/drm_crtc.h:2175: warning: No description found for parameter 'plane_type_property'
include/drm/drm_crtc.h:2175: warning: No description found for parameter 'rotation_property'
include/drm/drm_crtc.h:2175: warning: No description found for parameter 'prop_src_x'
include/drm/drm_crtc.h:2175: warning: No description found for parameter 'prop_src_y'
include/drm/drm_crtc.h:2175: warning: No description found for parameter 'prop_src_w'
include/drm/drm_crtc.h:2175: warning: No description found for parameter 'prop_src_h'
include/drm/drm_crtc.h:2175: warning: No description found for parameter 'prop_crtc_x'
include/drm/drm_crtc.h:2175: warning: No description found for parameter 'prop_crtc_y'
include/drm/drm_crtc.h:2175: warning: No description found for parameter 'prop_crtc_w'
include/drm/drm_crtc.h:2175: warning: No description found for parameter 'prop_crtc_h'
include/drm/drm_crtc.h:2175: warning: No description found for parameter 'prop_fb_id'
include/drm/drm_crtc.h:2175: warning: No description found for parameter 'prop_crtc_id'
include/drm/drm_crtc.h:2175: warning: No description found for parameter 'prop_active'
include/drm/drm_crtc.h:2175: warning: No description found for parameter 'prop_mode_id'
include/drm/drm_crtc.h:2175: warning: No description found for parameter 'dvi_i_subconnector_property'
include/drm/drm_crtc.h:2175: warning: No description found for parameter 'dvi_i_select_subconnector_property'
include/drm/drm_crtc.h:2175: warning: No description found for parameter 'tv_subconnector_property'
include/drm/drm_crtc.h:2175: warning: No description found for parameter 'tv_select_subconnector_property'
include/drm/drm_crtc.h:2175: warning: No description found for parameter 'tv_mode_property'
include/drm/drm_crtc.h:2175: warning: No description found for parameter 'tv_left_margin_property'
include/drm/drm_crtc.h:2175: warning: No description found for parameter 'tv_right_margin_property'
include/drm/drm_crtc.h:2175: warning: No description found for parameter 'tv_top_margin_property'
include/drm/drm_crtc.h:2175: warning: No description found for parameter 'tv_bottom_margin_property'
include/drm/drm_crtc.h:2175: warning: No description found for parameter 'tv_brightness_property'
include/drm/drm_crtc.h:2175: warning: No description found for parameter 'tv_contrast_property'
include/drm/drm_crtc.h:2175: warning: No description found for parameter 'tv_flicker_reduction_property'
include/drm/drm_crtc.h:2175: warning: No description found for parameter 'tv_overscan_property'
include/drm/drm_crtc.h:2175: warning: No description found for parameter 'tv_saturation_property'
include/drm/drm_crtc.h:2175: warning: No description found for parameter 'tv_hue_property'
include/drm/drm_crtc.h:2175: warning: No description found for parameter 'scaling_mode_property'
include/drm/drm_crtc.h:2175: warning: No description found for parameter 'aspect_ratio_property'
include/drm/drm_crtc.h:2175: warning: No description found for parameter 'dirty_info_property'
include/drm/drm_crtc.h:2175: warning: No description found for parameter 'suggested_x_property'
include/drm/drm_crtc.h:2175: warning: No description found for parameter 'suggested_y_property'
include/drm/drm_crtc.h:2175: warning: No description found for parameter 'allow_fb_modifiers'
drivers/gpu/drm/drm_atomic_helper.c:2924: warning: No description found for parameter 'start'
drivers/gpu/drm/drm_atomic_helper.c:2924: warning: No description found for parameter 'start'
drivers/gpu/drm/drm_atomic_helper.c:2924: warning: No description found for parameter 'start'
drivers/gpu/drm/drm_atomic_helper.c:2924: warning: No description found for parameter 'start'
>> drivers/gpu/drm/drm_fb_helper.c:867: warning: No description found for parameter 'info'
>> drivers/gpu/drm/drm_fb_helper.c:867: warning: No description found for parameter 'pagelist'
>> drivers/gpu/drm/drm_fb_helper.c:867: warning: No description found for parameter 'info'
>> drivers/gpu/drm/drm_fb_helper.c:867: warning: No description found for parameter 'pagelist'
include/drm/drm_dp_helper.h:749: warning: No description found for parameter 'i2c_nack_count'
include/drm/drm_dp_helper.h:749: warning: No description found for parameter 'i2c_defer_count'
drivers/gpu/drm/drm_dp_mst_topology.c:2356: warning: No description found for parameter 'connector'
include/drm/drm_dp_mst_helper.h:92: warning: No description found for parameter 'cached_edid'
include/drm/drm_dp_mst_helper.h:92: warning: No description found for parameter 'has_audio'
include/drm/drm_dp_mst_helper.h:466: warning: No description found for parameter 'max_dpcd_transaction_bytes'
include/drm/drm_dp_mst_helper.h:466: warning: No description found for parameter 'sink_count'
include/drm/drm_dp_mst_helper.h:466: warning: No description found for parameter 'total_slots'
include/drm/drm_dp_mst_helper.h:466: warning: No description found for parameter 'avail_slots'
include/drm/drm_dp_mst_helper.h:466: warning: No description found for parameter 'total_pbn'
include/drm/drm_dp_mst_helper.h:466: warning: No description found for parameter 'qlock'
include/drm/drm_dp_mst_helper.h:466: warning: No description found for parameter 'tx_msg_downq'
include/drm/drm_dp_mst_helper.h:466: warning: No description found for parameter 'tx_down_in_progress'
include/drm/drm_dp_mst_helper.h:466: warning: No description found for parameter 'payload_lock'
include/drm/drm_dp_mst_helper.h:466: warning: No description found for parameter 'proposed_vcpis'
include/drm/drm_dp_mst_helper.h:466: warning: No description found for parameter 'payloads'
include/drm/drm_dp_mst_helper.h:466: warning: No description found for parameter 'payload_mask'
include/drm/drm_dp_mst_helper.h:466: warning: No description found for parameter 'vcpi_mask'
include/drm/drm_dp_mst_helper.h:466: warning: No description found for parameter 'tx_waitq'
include/drm/drm_dp_mst_helper.h:466: warning: No description found for parameter 'work'
include/drm/drm_dp_mst_helper.h:466: warning: No description found for parameter 'tx_work'
include/drm/drm_dp_mst_helper.h:466: warning: No description found for parameter 'destroy_connector_list'
include/drm/drm_dp_mst_helper.h:466: warning: No description found for parameter 'destroy_connector_lock'
include/drm/drm_dp_mst_helper.h:466: warning: No description found for parameter 'destroy_connector_work'
drivers/gpu/drm/drm_dp_mst_topology.c:2356: warning: No description found for parameter 'connector'
drivers/gpu/drm/drm_irq.c:176: warning: No description found for parameter 'flags'
include/drm/drmP.h:168: warning: No description found for parameter 'fmt'
include/drm/drmP.h:184: warning: No description found for parameter 'fmt'
include/drm/drmP.h:202: warning: No description found for parameter 'fmt'
include/drm/drmP.h:247: warning: No description found for parameter 'dev'
include/drm/drmP.h:247: warning: No description found for parameter 'data'
include/drm/drmP.h:247: warning: No description found for parameter 'file_priv'
include/drm/drmP.h:280: warning: No description found for parameter 'ioctl'
include/drm/drmP.h:280: warning: No description found for parameter '_func'
include/drm/drmP.h:280: warning: No description found for parameter '_flags'
include/drm/drmP.h:362: warning: cannot understand function prototype: 'struct drm_lock_data '
include/drm/drmP.h:415: warning: cannot understand function prototype: 'struct drm_driver '
include/drm/drmP.h:672: warning: cannot understand function prototype: 'struct drm_info_list '
include/drm/drmP.h:682: warning: cannot understand function prototype: 'struct drm_info_node '
include/drm/drmP.h:692: warning: cannot understand function prototype: 'struct drm_minor '
include/drm/drmP.h:740: warning: cannot understand function prototype: 'struct drm_device '
drivers/gpu/drm/i915/intel_runtime_pm.c:2275: warning: No description found for parameter 'resume'
drivers/gpu/drm/i915/intel_runtime_pm.c:2275: warning: No description found for parameter 'resume'
drivers/gpu/drm/i915/i915_irq.c:2663: warning: No description found for parameter 'fmt'
drivers/gpu/drm/i915/i915_irq.c:2663: warning: No description found for parameter 'fmt'
drivers/gpu/drm/i915/i915_irq.c:2663: warning: No description found for parameter 'fmt'
drivers/gpu/drm/i915/i915_irq.c:2663: warning: No description found for parameter 'fmt'
drivers/gpu/drm/i915/i915_gem.c:421: warning: No description found for parameter 'dev'
drivers/gpu/drm/i915/i915_gem.c:421: warning: No description found for parameter 'data'
drivers/gpu/drm/i915/i915_gem.c:421: warning: No description found for parameter 'file'
drivers/gpu/drm/i915/i915_gem.c:686: warning: No description found for parameter 'dev'
drivers/gpu/drm/i915/i915_gem.c:686: warning: No description found for parameter 'data'
drivers/gpu/drm/i915/i915_gem.c:686: warning: No description found for parameter 'file'
drivers/gpu/drm/i915/i915_gem.c:767: warning: No description found for parameter 'dev'
drivers/gpu/drm/i915/i915_gem.c:767: warning: No description found for parameter 'obj'
drivers/gpu/drm/i915/i915_gem.c:767: warning: No description found for parameter 'args'
drivers/gpu/drm/i915/i915_gem.c:767: warning: No description found for parameter 'file'
drivers/gpu/drm/i915/i915_gem.c:1029: warning: No description found for parameter 'dev'
drivers/gpu/drm/i915/i915_gem.c:1029: warning: No description found for parameter 'data'
drivers/gpu/drm/i915/i915_gem.c:1029: warning: No description found for parameter 'file'
drivers/gpu/drm/i915/i915_gem.c:1245: warning: No description found for parameter 'rps'
drivers/gpu/drm/i915/i915_gem.c:1459: warning: No description found for parameter 'req'
drivers/gpu/drm/i915/i915_gem.c:1494: warning: No description found for parameter 'obj'
drivers/gpu/drm/i915/i915_gem.c:1494: warning: No description found for parameter 'readonly'
drivers/gpu/drm/i915/i915_gem.c:1617: warning: No description found for parameter 'dev'
drivers/gpu/drm/i915/i915_gem.c:1617: warning: No description found for parameter 'data'
drivers/gpu/drm/i915/i915_gem.c:1617: warning: No description found for parameter 'file'
drivers/gpu/drm/i915/i915_gem.c:1680: warning: No description found for parameter 'dev'
drivers/gpu/drm/i915/i915_gem.c:1680: warning: No description found for parameter 'data'
drivers/gpu/drm/i915/i915_gem.c:1680: warning: No description found for parameter 'file'
drivers/gpu/drm/i915/i915_gem.c:1725: warning: No description found for parameter 'dev'
drivers/gpu/drm/i915/i915_gem.c:1725: warning: No description found for parameter 'data'
drivers/gpu/drm/i915/i915_gem.c:1725: warning: No description found for parameter 'file'
drivers/gpu/drm/i915/i915_gem.c:2013: warning: No description found for parameter 'dev'
drivers/gpu/drm/i915/i915_gem.c:2013: warning: No description found for parameter 'size'
drivers/gpu/drm/i915/i915_gem.c:2013: warning: No description found for parameter 'tiling_mode'
drivers/gpu/drm/i915/i915_gem.c:2013: warning: No description found for parameter 'fenced'
drivers/gpu/drm/i915/i915_gem.c:2013: warning: Excess function parameter 'obj' description in 'i915_gem_get_gtt_alignment'
drivers/gpu/drm/i915/i915_gem.c:2911: warning: No description found for parameter 'engine'
drivers/gpu/drm/i915/i915_gem.c:3037: warning: No description found for parameter 'obj'
drivers/gpu/drm/i915/i915_gem.c:3087: warning: No description found for parameter 'dev'
drivers/gpu/drm/i915/i915_gem.c:3087: warning: No description found for parameter 'data'
drivers/gpu/drm/i915/i915_gem.c:3087: warning: No description found for parameter 'file'
drivers/gpu/drm/i915/i915_gem.c:3087: warning: Excess function parameter 'DRM_IOCTL_ARGS' description in 'i915_gem_wait_ioctl'
drivers/gpu/drm/i915/i915_gem.c:3459: warning: No description found for parameter 'obj'
drivers/gpu/drm/i915/i915_gem.c:3459: warning: No description found for parameter 'vm'
drivers/gpu/drm/i915/i915_gem.c:3459: warning: No description found for parameter 'ggtt_view'
drivers/gpu/drm/i915/i915_gem.c:3459: warning: No description found for parameter 'alignment'
drivers/gpu/drm/i915/i915_gem.c:3459: warning: No description found for parameter 'flags'
drivers/gpu/drm/i915/i915_gem.c:3714: warning: No description found for parameter 'obj'
drivers/gpu/drm/i915/i915_gem.c:3714: warning: No description found for parameter 'write'
drivers/gpu/drm/i915/i915_gem.c:3789: warning: No description found for parameter 'obj'
drivers/gpu/drm/i915/i915_gem.c:3789: warning: No description found for parameter 'cache_level'
drivers/gpu/drm/i915/i915_gem.c:4063: warning: No description found for parameter 'obj'
drivers/gpu/drm/i915/i915_gem.c:4063: warning: No description found for parameter 'write'
drivers/gpu/drm/i915/i915_cmd_parser.c:748: warning: No description found for parameter 'engine'
drivers/gpu/drm/i915/i915_cmd_parser.c:748: warning: Excess function parameter 'ring' description in 'i915_cmd_parser_init_ring'
drivers/gpu/drm/i915/i915_cmd_parser.c:838: warning: No description found for parameter 'engine'
drivers/gpu/drm/i915/i915_cmd_parser.c:838: warning: Excess function parameter 'ring' description in 'i915_cmd_parser_fini_ring'
drivers/gpu/drm/i915/i915_cmd_parser.c:1034: warning: No description found for parameter 'engine'

vim +/info +867 drivers/gpu/drm/drm_fb_helper.c

851 }
852 EXPORT_SYMBOL(drm_fb_helper_unlink_fbi);
853
854 #ifdef CONFIG_FB_DEFERRED_IO
855 /**
856 * drm_fb_helper_deferred_io() - (struct fb_deferred_io *)->deferred_io callback
857 * function
858 *
859 * This function always runs in process context (struct delayed_work) and calls
860 * the (struct drm_framebuffer_funcs)->dirty function with the collected
861 * damage. There's no need to worry about the possibility that the fb_sys_*()
862 * functions could be running in atomic context. They only schedule the
863 * delayed worker which then calls this deferred_io callback.
864 */
865 void drm_fb_helper_deferred_io(struct fb_info *info,
866 struct list_head *pagelist)
> 867 {
868 struct drm_fb_helper *helper = info->par;
869 unsigned long start, end, min, max;
870 struct drm_clip_rect clip;
871 unsigned long flags;
872 struct page *page;
873
874 if (!helper->fb->funcs->dirty)
875 return;

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