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drm: debugfs: Remove all files automatically on cleanup

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Instead of having the drivers call drm_debugfs_remove_files() in
their drm_driver->debugfs_cleanup hook, do it automatically by
traversing minor->debugfs_list.
Also use debugfs_remove_recursive() so drivers who add their own
debugfs files don't have to keep track of them for removal.

Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20170126225621.12314-2-noralf@tronnes.org
This commit is contained in:
Noralf Trønnes 2017-01-26 23:56:03 +01:00 committed by Daniel Vetter
parent 73f1a5858b
commit 086f2e5cde
1 changed files with 17 additions and 3 deletions
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20
drivers/gpu/drm/drm_debugfs.c
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@ -81,7 +81,8 @@ static const struct file_operations drm_debugfs_fops = {
* \return Zero on success, non-zero on failure
*
* Create a given set of debugfs files represented by an array of
* gdm_debugfs_lists in the given root directory.
* &drm_info_list in the given root directory. These files will be removed
* automatically on drm_debugfs_cleanup().
*/
int drm_debugfs_create_files(const struct drm_info_list *files, int count,
struct dentry *root, struct drm_minor *minor)
@ -218,6 +219,19 @@ int drm_debugfs_remove_files(const struct drm_info_list *files, int count,
}
EXPORT_SYMBOL(drm_debugfs_remove_files);
static void drm_debugfs_remove_all_files(struct drm_minor *minor)
{
struct drm_info_node *node, *tmp;
mutex_lock(&minor->debugfs_lock);
list_for_each_entry_safe(node, tmp, &minor->debugfs_list, list) {
debugfs_remove(node->dent);
list_del(&node->list);
kfree(node);
}
mutex_unlock(&minor->debugfs_lock);
}
/**
* Cleanup the debugfs filesystem resources.
*
@ -245,9 +259,9 @@ int drm_debugfs_cleanup(struct drm_minor *minor)
}
}
drm_debugfs_remove_files(drm_debugfs_list, DRM_DEBUGFS_ENTRIES, minor);
drm_debugfs_remove_all_files(minor);
debugfs_remove(minor->debugfs_root);
debugfs_remove_recursive(minor->debugfs_root);
minor->debugfs_root = NULL;
return 0;