drm/sti: Remove drm_debugfs_remove_files() calls

drm_debugfs_cleanup() now removes all minor->debugfs_list entries
automatically, so it's not necessary to call
drm_debugfs_remove_files(). Additionally it uses
debugfs_remove_recursive() to clean up the debugfs files, so no need
for adding fake drm_info_node entries.

Cc: benjamin.gaignard@linaro.org
Cc: vincent.abriou@st.com
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Acked-by: Vincent Abriou <vincent.abriou@st.com>
Tested-by: Vincent Abriou <vincent.abriou@st.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20170126225621.12314-14-noralf@tronnes.org

drivers/gpu/drm/sti/sti_drv.c

@@ -89,38 +89,9 @@ static struct drm_info_list sti_drm_dbg_list[] = {
 	{"fps_get", sti_drm_fps_dbg_show, 0},
 };
 
-static int sti_drm_debugfs_create(struct dentry *root,
-				  struct drm_minor *minor,
-				  const char *name,
-				  const struct file_operations *fops)
-{
-	struct drm_device *dev = minor->dev;
-	struct drm_info_node *node;
-	struct dentry *ent;
-
-	ent = debugfs_create_file(name, S_IRUGO | S_IWUSR, root, dev, fops);
-	if (IS_ERR(ent))
-		return PTR_ERR(ent);
-
-	node = kmalloc(sizeof(*node), GFP_KERNEL);
-	if (!node) {
-		debugfs_remove(ent);
-		return -ENOMEM;
-	}
-
-	node->minor = minor;
-	node->dent = ent;
-	node->info_ent = (void *)fops;
-
-	mutex_lock(&minor->debugfs_lock);
-	list_add(&node->list, &minor->debugfs_list);
-	mutex_unlock(&minor->debugfs_lock);
-
-	return 0;
-}
-
 static int sti_drm_dbg_init(struct drm_minor *minor)
 {
+	struct dentry *dentry;
 	int ret;
 
 	ret = drm_debugfs_create_files(sti_drm_dbg_list,
@@ -129,10 +100,13 @@ static int sti_drm_dbg_init(struct drm_minor *minor)
 	if (ret)
 		goto err;
 
-	ret = sti_drm_debugfs_create(minor->debugfs_root, minor, "fps_show",
+	dentry = debugfs_create_file("fps_show", S_IRUGO | S_IWUSR,
+				     minor->debugfs_root, minor->dev,
 				     &sti_drm_fps_fops);
-	if (ret)
+	if (!dentry) {
+		ret = -ENOMEM;
 		goto err;
+	}
 
 	DRM_INFO("%s: debugfs installed\n", DRIVER_NAME);
 	return 0;
@@ -141,15 +115,6 @@ err:
 	return ret;
 }
 
-static void sti_drm_dbg_cleanup(struct drm_minor *minor)
-{
-	drm_debugfs_remove_files(sti_drm_dbg_list,
-				 ARRAY_SIZE(sti_drm_dbg_list), minor);
-
-	drm_debugfs_remove_files((struct drm_info_list *)&sti_drm_fps_fops,
-				 1, minor);
-}
-
 static void sti_atomic_schedule(struct sti_private *private,
 				struct drm_atomic_state *state)
 {
@@ -326,7 +291,6 @@ static struct drm_driver sti_driver = {
 	.gem_prime_mmap = drm_gem_cma_prime_mmap,
 
 	.debugfs_init = sti_drm_dbg_init,
-	.debugfs_cleanup = sti_drm_dbg_cleanup,
 
 	.name = DRIVER_NAME,
 	.desc = DRIVER_DESC,

drivers/gpu/drm/sti/sti_dvo.c

@@ -195,13 +195,6 @@ static struct drm_info_list dvo_debugfs_files[] = {
 	{ "dvo", dvo_dbg_show, 0, NULL },
 };
 
-static void dvo_debugfs_exit(struct sti_dvo *dvo, struct drm_minor *minor)
-{
-	drm_debugfs_remove_files(dvo_debugfs_files,
-				 ARRAY_SIZE(dvo_debugfs_files),
-				 minor);
-}
-
 static int dvo_debugfs_init(struct sti_dvo *dvo, struct drm_minor *minor)
 {
 	unsigned int i;
@@ -514,9 +507,6 @@ static void sti_dvo_unbind(struct device *dev,
 			   struct device *master, void *data)
 {
 	struct sti_dvo *dvo = dev_get_drvdata(dev);
-	struct drm_device *drm_dev = data;
-
-	dvo_debugfs_exit(dvo, drm_dev->primary);
 
 	drm_bridge_remove(dvo->bridge);
 }

drivers/gpu/drm/sti/sti_hda.c

@@ -365,13 +365,6 @@ static struct drm_info_list hda_debugfs_files[] = {
 	{ "hda", hda_dbg_show, 0, NULL },
 };
 
-static void hda_debugfs_exit(struct sti_hda *hda, struct drm_minor *minor)
-{
-	drm_debugfs_remove_files(hda_debugfs_files,
-				 ARRAY_SIZE(hda_debugfs_files),
-				 minor);
-}
-
 static int hda_debugfs_init(struct sti_hda *hda, struct drm_minor *minor)
 {
 	unsigned int i;
@@ -739,10 +732,6 @@ err_sysfs:
 static void sti_hda_unbind(struct device *dev,
 		struct device *master, void *data)
 {
-	struct sti_hda *hda = dev_get_drvdata(dev);
-	struct drm_device *drm_dev = data;
-
-	hda_debugfs_exit(hda, drm_dev->primary);
 }
 
 static const struct component_ops sti_hda_ops = {

drivers/gpu/drm/sti/sti_hdmi.c

@@ -731,13 +731,6 @@ static struct drm_info_list hdmi_debugfs_files[] = {
 	{ "hdmi", hdmi_dbg_show, 0, NULL },
 };
 
-static void hdmi_debugfs_exit(struct sti_hdmi *hdmi, struct drm_minor *minor)
-{
-	drm_debugfs_remove_files(hdmi_debugfs_files,
-				 ARRAY_SIZE(hdmi_debugfs_files),
-				 minor);
-}
-
 static int hdmi_debugfs_init(struct sti_hdmi *hdmi, struct drm_minor *minor)
 {
 	unsigned int i;
@@ -1359,10 +1352,6 @@ err_sysfs:
 static void sti_hdmi_unbind(struct device *dev,
 		struct device *master, void *data)
 {
-	struct sti_hdmi *hdmi = dev_get_drvdata(dev);
-	struct drm_device *drm_dev = data;
-
-	hdmi_debugfs_exit(hdmi, drm_dev->primary);
 }
 
 static const struct component_ops sti_hdmi_ops = {

drivers/gpu/drm/sti/sti_tvout.c

@@ -567,13 +567,6 @@ static struct drm_info_list tvout_debugfs_files[] = {
 	{ "tvout", tvout_dbg_show, 0, NULL },
 };
 
-static void tvout_debugfs_exit(struct sti_tvout *tvout, struct drm_minor *minor)
-{
-	drm_debugfs_remove_files(tvout_debugfs_files,
-				 ARRAY_SIZE(tvout_debugfs_files),
-				 minor);
-}
-
 static int tvout_debugfs_init(struct sti_tvout *tvout, struct drm_minor *minor)
 {
 	unsigned int i;
@@ -627,7 +620,6 @@ static void sti_tvout_early_unregister(struct drm_encoder *encoder)
 	if (!tvout->debugfs_registered)
 		return;
 
-	tvout_debugfs_exit(tvout, encoder->dev->primary);
 	tvout->debugfs_registered = false;
 }