drm/msm/dpu: stop manually removing debugfs files for the DPU CRTC

DRM code handles removing all debugfs recursively. Drop CRTC-specific
code to perform that.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Link: https://lore.kernel.org/r/20211201222633.2476780-7-dmitry.baryshkov@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>

Author: lumag

drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c

@@ -1424,15 +1424,16 @@ DEFINE_SHOW_ATTRIBUTE(dpu_crtc_debugfs_state);
 static int _dpu_crtc_init_debugfs(struct drm_crtc *crtc)
 {
 	struct dpu_crtc *dpu_crtc = to_dpu_crtc(crtc);
+	struct dentry *debugfs_root;
 
-	dpu_crtc->debugfs_root = debugfs_create_dir(dpu_crtc->name,
+	debugfs_root = debugfs_create_dir(dpu_crtc->name,
 			crtc->dev->primary->debugfs_root);
 
 	debugfs_create_file("status", 0400,
-			dpu_crtc->debugfs_root,
+			debugfs_root,
 			dpu_crtc, &_dpu_debugfs_status_fops);
 	debugfs_create_file("state", 0600,
-			dpu_crtc->debugfs_root,
+			debugfs_root,
 			&dpu_crtc->base,
 			&dpu_crtc_debugfs_state_fops);
 
@@ -1450,13 +1451,6 @@ static int dpu_crtc_late_register(struct drm_crtc *crtc)
 	return _dpu_crtc_init_debugfs(crtc);
 }
 
-static void dpu_crtc_early_unregister(struct drm_crtc *crtc)
-{
-	struct dpu_crtc *dpu_crtc = to_dpu_crtc(crtc);
-
-	debugfs_remove_recursive(dpu_crtc->debugfs_root);
-}
-
 static const struct drm_crtc_funcs dpu_crtc_funcs = {
 	.set_config = drm_atomic_helper_set_config,
 	.destroy = dpu_crtc_destroy,
@@ -1465,7 +1459,6 @@ static const struct drm_crtc_funcs dpu_crtc_funcs = {
 	.atomic_duplicate_state = dpu_crtc_duplicate_state,
 	.atomic_destroy_state = dpu_crtc_destroy_state,
 	.late_register = dpu_crtc_late_register,
-	.early_unregister = dpu_crtc_early_unregister,
 	.verify_crc_source = dpu_crtc_verify_crc_source,
 	.set_crc_source = dpu_crtc_set_crc_source,
 	.enable_vblank  = msm_crtc_enable_vblank,

drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h

@@ -129,7 +129,6 @@ struct dpu_crtc_frame_event {
  * @drm_requested_vblank : Whether vblanks have been enabled in the encoder
  * @property_info : Opaque structure for generic property support
  * @property_defaults : Array of default values for generic property support
- * @debugfs_root  : Parent of debugfs node
  * @vblank_cb_count : count of vblank callback since last reset
  * @play_count    : frame count between crtc enable and disable
  * @vblank_cb_time  : ktime at vblank count reset
@@ -160,8 +159,6 @@ struct dpu_crtc {
 	struct drm_pending_vblank_event *event;
 	u32 vsync_count;
 
-	struct dentry *debugfs_root;
-
 	u32 vblank_cb_count;
 	u64 play_count;
 	ktime_t vblank_cb_time;