forked from mirrors/linux
a212d6a557
Since 987d65d013 (drm: debugfs: make drm_debugfs_create_files() never
fail), there is no need to check the return value of
drm_debugfs_create_files(). Therefore, remove remove unnecessary checks
and error handling statement blocks for its return value.
These changes also enable changing drm_debugfs_create_files() to return
void.
Signed-off-by: Wambui Karuga <wambui.karugax@gmail.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20200310133121.27913-17-wambui.karugax@gmail.com
101 lines
3.4 KiB
C
101 lines
3.4 KiB
C
/*
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* Internal Header for the Direct Rendering Manager
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*
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* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
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* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
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* Copyright (c) 2009-2010, Code Aurora Forum.
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* All rights reserved.
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*
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* Author: Rickard E. (Rik) Faith <faith@valinux.com>
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* Author: Gareth Hughes <gareth@valinux.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef _DRM_DEBUGFS_H_
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#define _DRM_DEBUGFS_H_
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#include <linux/types.h>
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#include <linux/seq_file.h>
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/**
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* struct drm_info_list - debugfs info list entry
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*
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* This structure represents a debugfs file to be created by the drm
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* core.
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*/
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struct drm_info_list {
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/** @name: file name */
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const char *name;
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/**
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* @show:
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*
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* Show callback. &seq_file->private will be set to the &struct
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* drm_info_node corresponding to the instance of this info on a given
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* &struct drm_minor.
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*/
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int (*show)(struct seq_file*, void*);
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/** @driver_features: Required driver features for this entry */
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u32 driver_features;
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/** @data: Driver-private data, should not be device-specific. */
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void *data;
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};
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/**
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* struct drm_info_node - Per-minor debugfs node structure
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*
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* This structure represents a debugfs file, as an instantiation of a &struct
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* drm_info_list on a &struct drm_minor.
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*
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* FIXME:
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*
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* No it doesn't make a hole lot of sense that we duplicate debugfs entries for
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* both the render and the primary nodes, but that's how this has organically
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* grown. It should probably be fixed, with a compatibility link, if needed.
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*/
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struct drm_info_node {
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/** @minor: &struct drm_minor for this node. */
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struct drm_minor *minor;
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/** @info_ent: template for this node. */
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const struct drm_info_list *info_ent;
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/* private: */
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struct list_head list;
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struct dentry *dent;
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};
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#if defined(CONFIG_DEBUG_FS)
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void drm_debugfs_create_files(const struct drm_info_list *files,
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int count, struct dentry *root,
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struct drm_minor *minor);
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int drm_debugfs_remove_files(const struct drm_info_list *files,
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int count, struct drm_minor *minor);
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#else
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static inline void drm_debugfs_create_files(const struct drm_info_list *files,
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int count, struct dentry *root,
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struct drm_minor *minor)
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{}
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static inline int drm_debugfs_remove_files(const struct drm_info_list *files,
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int count, struct drm_minor *minor)
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{
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return 0;
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}
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#endif
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#endif /* _DRM_DEBUGFS_H_ */
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