Re: [PATCH 3/3] drm/i915/psr: Do not activate PSR when vblank interrupts are enabled

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Hi,

[auto build test WARNING on v4.7-rc2]
[cannot apply to drm-intel/for-linux-next drm/drm-next next-20160608]
[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/Dhinakaran-Pandiyan/CHV-vblank-failures-when-PSR-is-active/20160609-094028
reproduce: make htmldocs

All warnings (new ones prefixed by >>):

   drivers/gpu/drm/drm_fb_cma_helper.c:233: warning: No description found for parameter 'dev'
   drivers/gpu/drm/drm_fb_cma_helper.c:233: warning: No description found for parameter 'file_priv'
   drivers/gpu/drm/drm_fb_cma_helper.c:233: warning: No description found for parameter 'mode_cmd'
   drivers/gpu/drm/drm_fb_cma_helper.c:285: warning: No description found for parameter 'm'
   drivers/gpu/drm/drm_fb_cma_helper.c:285: warning: No description found for parameter 'arg'
   include/drm/drm_dp_helper.h:750: warning: No description found for parameter 'i2c_nack_count'
   include/drm/drm_dp_helper.h:750: warning: No description found for parameter 'i2c_defer_count'
   drivers/gpu/drm/drm_dp_mst_topology.c:2383: 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:2383: 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:705: warning: cannot understand function prototype: 'struct drm_info_list '
   include/drm/drmP.h:715: warning: cannot understand function prototype: 'struct drm_info_node '
   include/drm/drmP.h:725: warning: cannot understand function prototype: 'struct drm_minor '
   include/drm/drmP.h:779: warning: cannot understand function prototype: 'struct drm_device '
   drivers/gpu/drm/i915/intel_runtime_pm.c:2411: warning: No description found for parameter 'resume'
   drivers/gpu/drm/i915/intel_runtime_pm.c:2411: warning: No description found for parameter 'resume'
   drivers/gpu/drm/i915/i915_irq.c:2722: warning: No description found for parameter 'fmt'
   drivers/gpu/drm/i915/i915_irq.c:2722: warning: No description found for parameter 'fmt'
   drivers/gpu/drm/i915/i915_irq.c:2722: warning: No description found for parameter 'fmt'
   drivers/gpu/drm/i915/i915_irq.c:2722: warning: No description found for parameter 'fmt'
   drivers/gpu/drm/i915/i915_gem.c:416: warning: No description found for parameter 'dev'
   drivers/gpu/drm/i915/i915_gem.c:416: warning: No description found for parameter 'data'
   drivers/gpu/drm/i915/i915_gem.c:416: warning: No description found for parameter 'file'
   drivers/gpu/drm/i915/i915_gem.c:681: warning: No description found for parameter 'dev'
   drivers/gpu/drm/i915/i915_gem.c:681: warning: No description found for parameter 'data'
   drivers/gpu/drm/i915/i915_gem.c:681: warning: No description found for parameter 'file'
   drivers/gpu/drm/i915/i915_gem.c:762: warning: No description found for parameter 'dev'
   drivers/gpu/drm/i915/i915_gem.c:762: warning: No description found for parameter 'obj'
   drivers/gpu/drm/i915/i915_gem.c:762: warning: No description found for parameter 'args'
   drivers/gpu/drm/i915/i915_gem.c:762: warning: No description found for parameter 'file'
   drivers/gpu/drm/i915/i915_gem.c:1025: warning: No description found for parameter 'dev'
   drivers/gpu/drm/i915/i915_gem.c:1025: warning: No description found for parameter 'data'
   drivers/gpu/drm/i915/i915_gem.c:1025: warning: No description found for parameter 'file'
   drivers/gpu/drm/i915/i915_gem.c:1231: warning: No description found for parameter 'rps'
   drivers/gpu/drm/i915/i915_gem.c:1446: warning: No description found for parameter 'req'
   drivers/gpu/drm/i915/i915_gem.c:1473: warning: No description found for parameter 'obj'
   drivers/gpu/drm/i915/i915_gem.c:1473: warning: No description found for parameter 'readonly'
   drivers/gpu/drm/i915/i915_gem.c:1590: warning: No description found for parameter 'dev'
   drivers/gpu/drm/i915/i915_gem.c:1590: warning: No description found for parameter 'data'
   drivers/gpu/drm/i915/i915_gem.c:1590: warning: No description found for parameter 'file'
   drivers/gpu/drm/i915/i915_gem.c:1653: warning: No description found for parameter 'dev'
   drivers/gpu/drm/i915/i915_gem.c:1653: warning: No description found for parameter 'data'
   drivers/gpu/drm/i915/i915_gem.c:1653: warning: No description found for parameter 'file'
   drivers/gpu/drm/i915/i915_gem.c:1698: warning: No description found for parameter 'dev'
   drivers/gpu/drm/i915/i915_gem.c:1698: warning: No description found for parameter 'data'
   drivers/gpu/drm/i915/i915_gem.c:1698: warning: No description found for parameter 'file'
   drivers/gpu/drm/i915/i915_gem.c:2006: warning: No description found for parameter 'dev'
   drivers/gpu/drm/i915/i915_gem.c:2006: warning: No description found for parameter 'size'
   drivers/gpu/drm/i915/i915_gem.c:2006: warning: No description found for parameter 'tiling_mode'
   drivers/gpu/drm/i915/i915_gem.c:2006: warning: No description found for parameter 'fenced'
   drivers/gpu/drm/i915/i915_gem.c:2006: warning: Excess function parameter 'obj' description in 'i915_gem_get_gtt_alignment'
   drivers/gpu/drm/i915/i915_gem.c:2960: warning: No description found for parameter 'engine'
   drivers/gpu/drm/i915/i915_gem.c:3086: warning: No description found for parameter 'obj'
   drivers/gpu/drm/i915/i915_gem.c:3136: warning: No description found for parameter 'dev'
   drivers/gpu/drm/i915/i915_gem.c:3136: warning: No description found for parameter 'data'
   drivers/gpu/drm/i915/i915_gem.c:3136: warning: No description found for parameter 'file'
   drivers/gpu/drm/i915/i915_gem.c:3136: warning: Excess function parameter 'DRM_IOCTL_ARGS' description in 'i915_gem_wait_ioctl'
   drivers/gpu/drm/i915/i915_gem.c:3498: warning: No description found for parameter 'obj'
   drivers/gpu/drm/i915/i915_gem.c:3498: warning: No description found for parameter 'vm'
   drivers/gpu/drm/i915/i915_gem.c:3498: warning: No description found for parameter 'ggtt_view'
   drivers/gpu/drm/i915/i915_gem.c:3498: warning: No description found for parameter 'alignment'
   drivers/gpu/drm/i915/i915_gem.c:3498: warning: No description found for parameter 'flags'
   drivers/gpu/drm/i915/i915_gem.c:3754: warning: No description found for parameter 'obj'
   drivers/gpu/drm/i915/i915_gem.c:3754: warning: No description found for parameter 'write'
   drivers/gpu/drm/i915/i915_gem.c:3832: warning: No description found for parameter 'obj'
   drivers/gpu/drm/i915/i915_gem.c:3832: warning: No description found for parameter 'cache_level'
   drivers/gpu/drm/i915/i915_gem.c:4106: warning: No description found for parameter 'obj'
   drivers/gpu/drm/i915/i915_gem.c:4106: warning: No description found for parameter 'write'
>> drivers/gpu/drm/i915/intel_psr.c:739: warning: No description found for parameter 'dev'
   drivers/gpu/drm/i915/intel_psr.c:767: warning: No description found for parameter 'dev'
>> drivers/gpu/drm/i915/intel_psr.c:739: warning: No description found for parameter 'dev'
   drivers/gpu/drm/i915/intel_psr.c:767: warning: No description found for parameter 'dev'
   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'
   drivers/gpu/drm/i915/i915_cmd_parser.c:1034: warning: Excess function parameter 'ring' description in 'i915_needs_cmd_parser'
   drivers/gpu/drm/i915/i915_cmd_parser.c:1186: warning: No description found for parameter 'engine'
   drivers/gpu/drm/i915/i915_cmd_parser.c:1186: warning: Excess function parameter 'ring' description in 'i915_parse_cmds'
   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'
   drivers/gpu/drm/i915/i915_cmd_parser.c:1034: warning: Excess function parameter 'ring' description in 'i915_needs_cmd_parser'
   drivers/gpu/drm/i915/i915_cmd_parser.c:1186: warning: No description found for parameter 'engine'
   drivers/gpu/drm/i915/i915_cmd_parser.c:1186: warning: Excess function parameter 'ring' description in 'i915_parse_cmds'
   drivers/gpu/drm/i915/intel_lrc.c:316: warning: No description found for parameter 'engine'
   drivers/gpu/drm/i915/intel_lrc.c:316: warning: Excess function parameter 'ring' description in 'intel_lr_context_descriptor_update'
   drivers/gpu/drm/i915/intel_lrc.c:353: warning: No description found for parameter 'engine'
   drivers/gpu/drm/i915/intel_lrc.c:353: warning: Excess function parameter 'ring' description in 'intel_execlists_ctx_id'
   drivers/gpu/drm/i915/intel_lrc.c:544: warning: No description found for parameter 'data'
   drivers/gpu/drm/i915/intel_lrc.c:544: warning: Excess function parameter 'engine' description in 'intel_lrc_irq_handler'
   drivers/gpu/drm/i915/intel_lrc.c:810: warning: No description found for parameter 'params'
   drivers/gpu/drm/i915/intel_lrc.c:810: warning: Excess function parameter 'dev' description in 'intel_execlists_submission'
   drivers/gpu/drm/i915/intel_lrc.c:810: warning: Excess function parameter 'file' description in 'intel_execlists_submission'
   drivers/gpu/drm/i915/intel_lrc.c:810: warning: Excess function parameter 'ring' description in 'intel_execlists_submission'
   drivers/gpu/drm/i915/intel_lrc.c:810: warning: Excess function parameter 'ctx' description in 'intel_execlists_submission'
   drivers/gpu/drm/i915/intel_lrc.c:810: warning: Excess function parameter 'batch_obj' description in 'intel_execlists_submission'
   drivers/gpu/drm/i915/intel_lrc.c:810: warning: Excess function parameter 'exec_start' description in 'intel_execlists_submission'
   drivers/gpu/drm/i915/intel_lrc.c:810: warning: Excess function parameter 'dispatch_flags' description in 'intel_execlists_submission'
   drivers/gpu/drm/i915/intel_lrc.c:1195: warning: No description found for parameter 'engine'
   drivers/gpu/drm/i915/intel_lrc.c:1195: warning: Excess function parameter 'ring' description in 'gen8_init_indirectctx_bb'
   drivers/gpu/drm/i915/intel_lrc.c:1258: warning: No description found for parameter 'engine'
   drivers/gpu/drm/i915/intel_lrc.c:1258: warning: Excess function parameter 'ring' description in 'gen8_init_perctx_bb'
   drivers/gpu/drm/i915/intel_lrc.c:1901: warning: No description found for parameter 'engine'
   drivers/gpu/drm/i915/intel_lrc.c:1901: warning: Excess function parameter 'ring' description in 'intel_logical_ring_cleanup'
   drivers/gpu/drm/i915/intel_lrc.c:2486: warning: No description found for parameter 'engine'
   drivers/gpu/drm/i915/intel_lrc.c:2486: warning: Excess function parameter 'ring' description in 'intel_lr_context_size'
   drivers/gpu/drm/i915/intel_lrc.c:2525: warning: No description found for parameter 'engine'
   drivers/gpu/drm/i915/intel_lrc.c:2525: warning: Excess function parameter 'ring' description in 'intel_lr_context_deferred_alloc'
   drivers/gpu/drm/i915/intel_lrc.c:316: warning: No description found for parameter 'engine'
   drivers/gpu/drm/i915/intel_lrc.c:316: warning: Excess function parameter 'ring' description in 'intel_lr_context_descriptor_update'
   drivers/gpu/drm/i915/intel_lrc.c:353: warning: No description found for parameter 'engine'
   drivers/gpu/drm/i915/intel_lrc.c:353: warning: Excess function parameter 'ring' description in 'intel_execlists_ctx_id'
   drivers/gpu/drm/i915/intel_lrc.c:544: warning: No description found for parameter 'data'
   drivers/gpu/drm/i915/intel_lrc.c:544: warning: Excess function parameter 'engine' description in 'intel_lrc_irq_handler'
   drivers/gpu/drm/i915/intel_lrc.c:810: warning: No description found for parameter 'params'
   drivers/gpu/drm/i915/intel_lrc.c:810: warning: Excess function parameter 'dev' description in 'intel_execlists_submission'
   drivers/gpu/drm/i915/intel_lrc.c:810: warning: Excess function parameter 'file' description in 'intel_execlists_submission'
   drivers/gpu/drm/i915/intel_lrc.c:810: warning: Excess function parameter 'ring' description in 'intel_execlists_submission'
   drivers/gpu/drm/i915/intel_lrc.c:810: warning: Excess function parameter 'ctx' description in 'intel_execlists_submission'
   drivers/gpu/drm/i915/intel_lrc.c:810: warning: Excess function parameter 'batch_obj' description in 'intel_execlists_submission'
   drivers/gpu/drm/i915/intel_lrc.c:810: warning: Excess function parameter 'exec_start' description in 'intel_execlists_submission'
   drivers/gpu/drm/i915/intel_lrc.c:810: warning: Excess function parameter 'dispatch_flags' description in 'intel_execlists_submission'
   drivers/gpu/drm/i915/intel_lrc.c:1195: warning: No description found for parameter 'engine'
   drivers/gpu/drm/i915/intel_lrc.c:1195: warning: Excess function parameter 'ring' description in 'gen8_init_indirectctx_bb'
   drivers/gpu/drm/i915/intel_lrc.c:1258: warning: No description found for parameter 'engine'
   drivers/gpu/drm/i915/intel_lrc.c:1258: warning: Excess function parameter 'ring' description in 'gen8_init_perctx_bb'
   drivers/gpu/drm/i915/intel_lrc.c:1901: warning: No description found for parameter 'engine'
   drivers/gpu/drm/i915/intel_lrc.c:1901: warning: Excess function parameter 'ring' description in 'intel_logical_ring_cleanup'
   drivers/gpu/drm/i915/intel_lrc.c:2486: warning: No description found for parameter 'engine'
   drivers/gpu/drm/i915/intel_lrc.c:2486: warning: Excess function parameter 'ring' description in 'intel_lr_context_size'
   drivers/gpu/drm/i915/intel_lrc.c:2525: warning: No description found for parameter 'engine'
   drivers/gpu/drm/i915/intel_lrc.c:2525: warning: Excess function parameter 'ring' description in 'intel_lr_context_deferred_alloc'
   Warning: didn't use docs for i915_hotplug_interrupt_update
   Warning: didn't use docs for ilk_update_display_irq
   Warning: didn't use docs for ilk_update_gt_irq
   Warning: didn't use docs for snb_update_pm_irq
   Warning: didn't use docs for bdw_update_port_irq
   Warning: didn't use docs for bdw_update_pipe_irq
   Warning: didn't use docs for ibx_display_interrupt_update
   Warning: didn't use docs for i915_enable_asle_pipestat
   Warning: didn't use docs for ivybridge_parity_work
   Warning: didn't use docs for i915_reset_and_wakeup
   Warning: didn't use docs for i915_handle_error
   Warning: didn't use docs for intel_irq_install
   Warning: didn't use docs for intel_irq_uninstall

vim +/dev +739 drivers/gpu/drm/i915/intel_psr.c

   723			 * This bit will be self-clear when it gets to the PSR active state.
   724			 */
   725			I915_WRITE(VLV_PSRCTL(pipe), val | VLV_EDP_PSR_SINGLE_FRAME_UPDATE);
   726		}
   727		mutex_unlock(&dev_priv->psr.lock);
   728	}
   729	
   730	/**
   731	 * vlv_psr_src_timing_get - src timing generation requested
   732	 *
   733	 * CHV does not have HW tracking to trigger PSR exit when VBI are enabled nor
   734	 * does enabling vblank interrupts prevent PSR entry. This function is called
   735	 * before enabling VBI to exit PSR and prevent PSR re-entry until vblanks are
   736	 * disabled again.
   737	 */
   738	void vlv_psr_src_timing_get(struct drm_device *dev)
 > 739	{
   740		struct drm_i915_private *dev_priv = dev->dev_private;
   741	
   742		mutex_lock(&dev_priv->psr.lock);
   743	        if (!dev_priv->psr.enabled) {
   744	                mutex_unlock(&dev_priv->psr.lock);
   745	                return;
   746		}
   747	

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

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