[Intel-gfx] [PATCH 3/9] drm/i915: fix memleak in intel_set_config_save_state()

[Gustavo Padovan]

From: Gustavo Padovan <gustavo.padovan at collabora.co.uk>

If the save_encoder_crtcs or save_connector_encoders allocation fail
we need to free everything we have already allocated.

Signed-off-by: Gustavo Padovan <gustavo.padovan at collabora.co.uk>
---
 drivers/gpu/drm/i915/intel_display.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 05937fe..a8a8abe 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -11018,13 +11018,13 @@ static int intel_set_config_save_state(struct drm_device *dev,
 		kcalloc(dev->mode_config.num_encoder,
 			sizeof(struct drm_crtc *), GFP_KERNEL);
 	if (!config->save_encoder_crtcs)
-		return -ENOMEM;
+		goto free_crtc;
 
 	config->save_connector_encoders =
 		kcalloc(dev->mode_config.num_connector,
 			sizeof(struct drm_encoder *), GFP_KERNEL);
 	if (!config->save_connector_encoders)
-		return -ENOMEM;
+		goto free_encoder;
 
 	/* Copy data. Note that driver private data is not affected.
 	 * Should anything bad happen only the expected state is
@@ -11046,6 +11046,12 @@ static int intel_set_config_save_state(struct drm_device *dev,
 	}
 
 	return 0;
+
+free_encoder:
+	kfree(config->save_encoder_crtcs);
+free_crtc:
+	kfree(config->save_crtc_enabled);
+	return -ENOMEM;
 }
 
 static void intel_set_config_restore_state(struct drm_device *dev,
-- 
1.9.3