drm: debugfs: Remove all files automatically on cleanup
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
diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c
index 37fd612..04b0af3 100644
--- a/drivers/gpu/drm/drm_debugfs.c
+++ b/drivers/gpu/drm/drm_debugfs.c
@@ -81,7 +81,8 @@
* \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 @@
}
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 @@
}
}
- 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;