[Intel-gfx] [PATCH 42/58] drm/i915: don't save all the encoder/crtc state in set_config

[Daniel Vetter]

We actually only touch the connector -> encoder and encoder -> crtc
linking. So it's enough to just save/restore that.

Signed-Off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
---
 drivers/gpu/drm/i915/intel_display.c | 28 +++++++++++++++-------------
 drivers/gpu/drm/i915/intel_drv.h     |  4 ++--
 2 files changed, 17 insertions(+), 15 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 56827d6..24706ca 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -6724,8 +6724,8 @@ done:
 static void intel_set_config_free(struct intel_set_config *config)
 {
 	if (config) {
-		kfree(config->save_connectors);
-		kfree(config->save_encoders);
+		kfree(config->save_connector_encoders);
+		kfree(config->save_encoder_crtcs);
 		kfree(config->save_crtcs);
 	}
 	kfree(config);
@@ -6741,19 +6741,21 @@ static int intel_set_config_save_state(struct drm_device *dev,
 
 	/* Allocate space for the backup of all (non-pointer) crtc, encoder and
 	 * connector data. */
-	config->save_crtcs = kzalloc(dev->mode_config.num_crtc *
+	config->save_crtcs = kcalloc(dev->mode_config.num_crtc,
 				     sizeof(struct drm_crtc), GFP_KERNEL);
 	if (!config->save_crtcs)
 		return -ENOMEM;
 
-	config->save_encoders = kzalloc(dev->mode_config.num_encoder *
-					sizeof(struct drm_encoder), GFP_KERNEL);
-	if (!config->save_encoders)
+	config->save_encoder_crtcs =
+		kcalloc(dev->mode_config.num_encoder,
+			sizeof(struct drm_crtc *), GFP_KERNEL);
+	if (!config->save_encoder_crtcs)
 		return -ENOMEM;
 
-	config->save_connectors = kzalloc(dev->mode_config.num_connector *
-					  sizeof(struct drm_connector), GFP_KERNEL);
-	if (!config->save_connectors)
+	config->save_connector_encoders =
+		kcalloc(dev->mode_config.num_connector,
+			sizeof(struct drm_encoder *), GFP_KERNEL);
+	if (!config->save_connector_encoders)
 		return -ENOMEM;
 
 	/* Copy data. Note that driver private data is not affected.
@@ -6767,12 +6769,12 @@ static int intel_set_config_save_state(struct drm_device *dev,
 
 	count = 0;
 	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
-		config->save_encoders[count++] = *encoder;
+		config->save_encoder_crtcs[count++] = encoder->crtc;
 	}
 
 	count = 0;
 	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
-		config->save_connectors[count++] = *connector;
+		config->save_connector_encoders[count++] = connector->encoder;
 	}
 
 	return 0;
@@ -6793,12 +6795,12 @@ static void intel_set_config_restore_state(struct drm_device *dev,
 
 	count = 0;
 	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
-		*encoder = config->save_encoders[count++];
+		encoder->crtc = config->save_encoder_crtcs[count++];
 	}
 
 	count = 0;
 	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
-		*connector = config->save_connectors[count++];
+		connector->encoder = config->save_connector_encoders[count++];
 	}
 }
 
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index fad11c8..4946282 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -424,8 +424,8 @@ extern void intel_panel_destroy_backlight(struct drm_device *dev);
 extern enum drm_connector_status intel_panel_detect(struct drm_device *dev);
 
 struct intel_set_config {
-	struct drm_connector *save_connectors;
-	struct drm_encoder *save_encoders;
+	struct drm_encoder **save_connector_encoders;
+	struct drm_crtc **save_encoder_crtcs;
 	struct drm_crtc *save_crtcs;
 
 	bool fb_changed;
-- 
1.7.11.2