Date:   Wed, 13 Jul 2022 18:07:44 -0400
From:   Rodrigo Vivi <rodrigo.vivi@...el.com>
To:     Mauro Carvalho Chehab <mchehab@...nel.org>
CC:     David Airlie <airlied@...ux.ie>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        <dri-devel@...ts.freedesktop.org>,
        Chris Wilson <chris@...is-wilson.co.uk>,
        Michael Cheng <michael.cheng@...el.com>,
        "Matthew Auld" <matthew.auld@...el.com>,
        Thomas Hellström 
        <thomas.hellstrom@...ux.intel.com>,
        Alan Previn <alan.previn.teres.alexis@...el.com>,
        Lucas De Marchi <lucas.demarchi@...el.com>,
        <intel-gfx@...ts.freedesktop.org>,
        Michał Winiarski <michal.winiarski@...el.com>,
        <linux-kernel@...r.kernel.org>,
        Tejas Upadhyay <tejaskumarx.surendrakumar.upadhyay@...el.com>,
        Nirmoy Das <nirmoy.das@...el.com>
Subject: Re: [Intel-gfx] [PATCH v2 06/39] drm/i915: gt: fix some Kernel-doc
 issues

On Wed, Jul 13, 2022 at 09:11:54AM +0100, Mauro Carvalho Chehab wrote:
> There are several trivial warnings there, due to trivial things:
> 	- lack of function name at the kerneldoc markup;
> 	- undocumented structs with kernel-doc markups;
> 	- wrong parameter syntax.
> 
>     Fix such warnings:
> 
> 	drivers/gpu/drm/i915/gt/intel_context.h:107: warning: Function parameter or member 'ce' not described in 'intel_context_lock_pinned'
> 	drivers/gpu/drm/i915/gt/intel_context.h:122: warning: Function parameter or member 'ce' not described in 'intel_context_is_pinned'
> 	drivers/gpu/drm/i915/gt/intel_context.h:141: warning: Function parameter or member 'ce' not described in 'intel_context_unlock_pinned'
> 	drivers/gpu/drm/i915/gt/intel_gtt.h:510: warning: Function parameter or member 'vm' not described in 'i915_vm_resv_put'
> 	drivers/gpu/drm/i915/gt/intel_gtt.h:510: warning: Excess function parameter 'resv' description in 'i915_vm_resv_put'
> 	drivers/gpu/drm/i915/gt/intel_gtt.h:615: warning: Function parameter or member 'i915' not described in 'i915_ggtt_mark_pte_lost'
> 	drivers/gpu/drm/i915/gt/intel_gtt.h:615: warning: Function parameter or member 'val' not described in 'i915_ggtt_mark_pte_lost'
> 	drivers/gpu/drm/i915/gt/intel_rps.c:2343: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
> 	 * Tells the intel_ips driver that the i915 driver is now loaded, if
> 	drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h:28: warning: Function parameter or member 'size' not described in '__guc_capture_bufstate'
> 	drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h:28: warning: Function parameter or member 'data' not described in '__guc_capture_bufstate'
> 	drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h:28: warning: Function parameter or member 'rd' not described in '__guc_capture_bufstate'
> 	drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h:28: warning: Function parameter or member 'wr' not described in '__guc_capture_bufstate'
> 	drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h:60: warning: Function parameter or member 'link' not described in '__guc_capture_parsed_output'
> 	drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h:60: warning: Function parameter or member 'is_partial' not described in '__guc_capture_parsed_output'
> 	drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h:60: warning: Function parameter or member 'eng_class' not described in '__guc_capture_parsed_output'
> 	drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h:60: warning: Function parameter or member 'eng_inst' not described in '__guc_capture_parsed_output'
> 	drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h:60: warning: Function parameter or member 'guc_id' not described in '__guc_capture_parsed_output'
> 	drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h:60: warning: Function parameter or member 'lrca' not described in '__guc_capture_parsed_output'
> 	drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h:60: warning: Function parameter or member 'reginfo' not described in '__guc_capture_parsed_output'
> 	drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h:63: warning: wrong kernel-doc identifier on line:
> 	 * struct guc_debug_capture_list_header / struct guc_debug_capture_list
> 	drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h:81: warning: wrong kernel-doc identifier on line:
> 	 * struct __guc_mmio_reg_descr / struct __guc_mmio_reg_descr_group
> 	drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h:106: warning: wrong kernel-doc identifier on line:
> 	 * struct guc_state_capture_header_t / struct guc_state_capture_t /
> 	drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h:164: warning: Function parameter or member 'is_valid' not described in '__guc_capture_ads_cache'
> 	drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h:164: warning: Function parameter or member 'ptr' not described in '__guc_capture_ads_cache'
> 	drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h:164: warning: Function parameter or member 'size' not described in '__guc_capture_ads_cache'
> 	drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h:164: warning: Function parameter or member 'status' not described in '__guc_capture_ads_cache'
> 	drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h:217: warning: Function parameter or member 'ads_null_cache' not described in 'intel_guc_state_capture'
> 	drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h:217: warning: Function parameter or member 'max_mmio_per_node' not described in 'intel_guc_state_capture'
> 	drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h:401: warning: Function parameter or member 'marker' not described in 'guc_log_buffer_state'
> 	drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h:401: warning: Function parameter or member 'read_ptr' not described in 'guc_log_buffer_state'
> 	drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h:401: warning: Function parameter or member 'write_ptr' not described in 'guc_log_buffer_state'
> 	drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h:401: warning: Function parameter or member 'size' not described in 'guc_log_buffer_state'
> 	drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h:401: warning: Function parameter or member 'sampled_write_ptr' not described in 'guc_log_buffer_state'
> 	drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h:401: warning: Function parameter or member 'wrap_offset' not described in 'guc_log_buffer_state'
> 	drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h:401: warning: Function parameter or member 'flush_to_file' not described in 'guc_log_buffer_state'
> 	drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h:401: warning: Function parameter or member 'buffer_full_cnt' not described in 'guc_log_buffer_state'
> 	drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h:401: warning: Function parameter or member 'reserved' not described in 'guc_log_buffer_state'
> 	drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h:401: warning: Function parameter or member 'flags' not described in 'guc_log_buffer_state'
> 	drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h:401: warning: Function parameter or member 'version' not described in 'guc_log_buffer_state'
> 
> Signed-off-by: Mauro Carvalho Chehab <mchehab@...nel.org>
> ---
> 
> To avoid mailbombing on a large number of people, only mailing lists were C/C on the cover.
> See [PATCH v2 00/39] at: https://lore.kernel.org/all/cover.1657699522.git.mchehab@kernel.org/
> 
>  drivers/gpu/drm/i915/gt/intel_context.h       |  6 +++---
>  drivers/gpu/drm/i915/gt/intel_engine_cs.c     |  4 ++--
>  drivers/gpu/drm/i915/gt/intel_gtt.h           |  6 +++---
>  drivers/gpu/drm/i915/gt/intel_rps.c           |  4 ++--
>  drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h | 14 +++++++-------
>  drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h   |  2 +-
>  6 files changed, 18 insertions(+), 18 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/gt/intel_context.h b/drivers/gpu/drm/i915/gt/intel_context.h
> index 8e2d70630c49..91c092d5deae 100644
> --- a/drivers/gpu/drm/i915/gt/intel_context.h
> +++ b/drivers/gpu/drm/i915/gt/intel_context.h
> @@ -96,7 +96,7 @@ void intel_context_bind_parent_child(struct intel_context *parent,
>  
>  /**
>   * intel_context_lock_pinned - Stablises the 'pinned' status of the HW context
> - * @ce - the context
> + * @ce: the context
>   *
>   * Acquire a lock on the pinned status of the HW context, such that the context
>   * can neither be bound to the GPU or unbound whilst the lock is held, i.e.
> @@ -110,7 +110,7 @@ static inline int intel_context_lock_pinned(struct intel_context *ce)
>  
>  /**
>   * intel_context_is_pinned - Reports the 'pinned' status
> - * @ce - the context
> + * @ce: the context
>   *
>   * While in use by the GPU, the context, along with its ring and page
>   * tables is pinned into memory and the GTT.
> @@ -132,7 +132,7 @@ static inline void intel_context_cancel_request(struct intel_context *ce,
>  
>  /**
>   * intel_context_unlock_pinned - Releases the earlier locking of 'pinned' status
> - * @ce - the context
> + * @ce: the context
>   *
>   * Releases the lock earlier acquired by intel_context_unlock_pinned().
>   */
> diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
> index 37fa813af766..da225f5db2a4 100644
> --- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c
> +++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
> @@ -1197,7 +1197,7 @@ create_kernel_context(struct intel_engine_cs *engine)
>  }
>  
>  /**
> - * intel_engines_init_common - initialize cengine state which might require hw access
> + * engine_init_common - initialize cengine state which might require hw access
>   * @engine: Engine to initialize.
>   *
>   * Initializes @engine@ structure members shared between legacy and execlists
> @@ -1278,7 +1278,7 @@ int intel_engines_init(struct intel_gt *gt)
>  }
>  
>  /**
> - * intel_engines_cleanup_common - cleans up the engine state created by
> + * intel_engine_cleanup_common - cleans up the engine state created by
>   *                                the common initiailizers.
>   * @engine: Engine to cleanup.
>   *
> diff --git a/drivers/gpu/drm/i915/gt/intel_gtt.h b/drivers/gpu/drm/i915/gt/intel_gtt.h
> index e639434e97fd..fca8eedee1d8 100644
> --- a/drivers/gpu/drm/i915/gt/intel_gtt.h
> +++ b/drivers/gpu/drm/i915/gt/intel_gtt.h
> @@ -503,7 +503,7 @@ static inline void i915_vm_put(struct i915_address_space *vm)
>  
>  /**
>   * i915_vm_resv_put - Release a reference on the vm's reservation lock
> - * @resv: Pointer to a reservation lock obtained from i915_vm_resv_get()
> + * @vm: The vm whose reservation lock was obtained from i915_vm_resv_get()
>   */
>  static inline void i915_vm_resv_put(struct i915_address_space *vm)
>  {
> @@ -604,8 +604,8 @@ void i915_ggtt_resume(struct i915_ggtt *ggtt);
>  
>  /**
>   * i915_ggtt_mark_pte_lost - Mark ggtt ptes as lost or clear such a marking
> - * @i915 The device private.
> - * @val whether the ptes should be marked as lost.
> + * @i915: The device private.
> + * @val: whether the ptes should be marked as lost.
>   *
>   * In some cases pte content is retained across suspend, but typically lost
>   * across hibernate. Typically they should be marked as lost on
> diff --git a/drivers/gpu/drm/i915/gt/intel_rps.c b/drivers/gpu/drm/i915/gt/intel_rps.c
> index fb3f57ee450b..8aefc427e06e 100644
> --- a/drivers/gpu/drm/i915/gt/intel_rps.c
> +++ b/drivers/gpu/drm/i915/gt/intel_rps.c
> @@ -2339,8 +2339,8 @@ bool rps_read_mask_mmio(struct intel_rps *rps,
>  static struct drm_i915_private __rcu *ips_mchdev;
>  
>  /**
> - * Tells the intel_ips driver that the i915 driver is now loaded, if
> - * IPS got loaded first.
> + * ips_ping_for_i915_load - Tells the intel_ips driver that the i915 driver
> + *	 is now loaded, if IPS got loaded first.
>   *
>   * This awkward dance is so that neither module has to depend on the
>   * other in order for IPS to do the appropriate communication of
> diff --git a/drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h b/drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h
> index 3624abfd22d1..58f93226b1c1 100644
> --- a/drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h
> +++ b/drivers/gpu/drm/i915/gt/uc/guc_capture_fwif.h
> @@ -12,7 +12,7 @@
>  struct intel_guc;
>  struct file;
>  
> -/**
> +/*
>   * struct __guc_capture_bufstate
>   *
>   * Book-keeping structure used to track read and write pointers
> @@ -26,7 +26,7 @@ struct __guc_capture_bufstate {
>  	u32 wr;
>  };
>  
> -/**
> +/*
>   * struct __guc_capture_parsed_output - extracted error capture node
>   *
>   * A single unit of extracted error-capture output data grouped together
> @@ -58,7 +58,7 @@ struct __guc_capture_parsed_output {
>  #define GCAP_PARSED_REGLIST_INDEX_ENGINST  BIT(GUC_CAPTURE_LIST_TYPE_ENGINE_INSTANCE)
>  };
>  
> -/**
> +/*
>   * struct guc_debug_capture_list_header / struct guc_debug_capture_list
>   *
>   * As part of ADS registration, these header structures (followed by
> @@ -76,7 +76,7 @@ struct guc_debug_capture_list {
>  	struct guc_mmio_reg regs[0];
>  } __packed;
>  
> -/**
> +/*
>   * struct __guc_mmio_reg_descr / struct __guc_mmio_reg_descr_group
>   *
>   * intel_guc_capture module uses these structures to maintain static
> @@ -101,7 +101,7 @@ struct __guc_mmio_reg_descr_group {
>  	struct __guc_mmio_reg_descr *extlist; /* only used for steered registers */
>  };
>  
> -/**
> +/*
>   * struct guc_state_capture_header_t / struct guc_state_capture_t /
>   * guc_state_capture_group_header_t / guc_state_capture_group_t
>   *
> @@ -148,7 +148,7 @@ struct guc_state_capture_group_t {
>  	struct guc_state_capture_t capture_entries[0];
>  } __packed;
>  
> -/**
> +/*
>   * struct __guc_capture_ads_cache

and many more here... :/
Hopefully this great work on the docs will make these ugly
"exported" "__" prefixes visible and we will fix them 

Reviewed-by: Rodrigo Vivi <rodrigo.vivi@...el.com>

>   *
>   * A structure to cache register lists that were populated and registered
> @@ -162,7 +162,7 @@ struct __guc_capture_ads_cache {
>  	int status;
>  };
>  
> -/**
> +/*
>   * struct intel_guc_state_capture
>   *
>   * Internal context of the intel_guc_capture module.
> diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h b/drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h
> index b3c9a9327f76..237019e98ede 100644
> --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h
> +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h
> @@ -360,7 +360,7 @@ enum guc_log_buffer_type {
>  	GUC_MAX_LOG_BUFFER
>  };
>  
> -/**
> +/*
>   * struct guc_log_buffer_state - GuC log buffer state
>   *
>   * Below state structure is used for coordination of retrieval of GuC firmware
> -- 
> 2.36.1
> 

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