[PATCH 1/4] dri: do not check for NULL debugfs dentry

[Nirmoy Das]

Debugfs APIs returns encoded error on failure instead of NULL
and for drm primary/minor debugfs directories, we save the
returned value in the dentry pointer and pass it on to drm
drivers to further create debugfs files/directories. Error
conditions are handled by debugfs APIs, so no need to check
for NULL, as saved dentry pointers will either contain a
valid pointer or an error code.

CC: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
CC: Maxime Ripard <mripard at kernel.org>
CC: Thomas Zimmermann <tzimmermann at suse.de>
CC: David Airlie <airlied at linux.ie>
CC: Daniel Vetter <daniel at ffwll.ch>

Signed-off-by: Nirmoy Das <nirmoy.das at amd.com>
---
 drivers/gpu/drm/drm_debugfs.c | 9 ---------
 1 file changed, 9 deletions(-)

diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c
index b0a826489488..0073854a4383 100644
--- a/drivers/gpu/drm/drm_debugfs.c
+++ b/drivers/gpu/drm/drm_debugfs.c
@@ -272,9 +272,6 @@ static void drm_debugfs_remove_all_files(struct drm_minor *minor)

 void drm_debugfs_cleanup(struct drm_minor *minor)
 {
-	if (!minor->debugfs_root)
-		return;
-
 	drm_debugfs_remove_all_files(minor);

 	debugfs_remove_recursive(minor->debugfs_root);
@@ -419,9 +416,6 @@ void drm_debugfs_connector_add(struct drm_connector *connector)
 	struct drm_minor *minor = connector->dev->primary;
 	struct dentry *root;

-	if (!minor->debugfs_root)
-		return;
-
 	root = debugfs_create_dir(connector->name, minor->debugfs_root);
 	connector->debugfs_entry = root;

@@ -440,9 +434,6 @@ void drm_debugfs_connector_add(struct drm_connector *connector)

 void drm_debugfs_connector_remove(struct drm_connector *connector)
 {
-	if (!connector->debugfs_entry)
-		return;
-
 	debugfs_remove_recursive(connector->debugfs_entry);

 	connector->debugfs_entry = NULL;
--
2.32.0