[PATCH 2/9] drm: debugfs: Remove all files automatically on cleanup

[Noralf Trønnes]

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 <nor...@tronnes.org>
---
 drivers/gpu/drm/drm_debugfs.c | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c
index 37fd612..0510ce2 100644
--- a/drivers/gpu/drm/drm_debugfs.c
+++ b/drivers/gpu/drm/drm_debugfs.c
@@ -218,6 +218,19 @@ 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 +258,9 @@ 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;
-- 
2.10.2