[Intel-gfx] [PATCH 2/2] drm/i915: check for return value

[Sudip Mukherjee]

We were not checking the return value of drm_encoder_init() which can
fail. And if it fails then we will be working with an uninitialized
encoder.

Signed-off-by: Sudip Mukherjee <sudip at vectorindia.org>
---
 drivers/gpu/drm/i915/intel_dp.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index c084bca..69946b7 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -5870,8 +5870,9 @@ intel_dp_init(struct drm_device *dev, int output_reg, enum port port)
 	intel_encoder = &intel_dig_port->base;
 	encoder = &intel_encoder->base;
 
-	drm_encoder_init(dev, &intel_encoder->base, &intel_dp_enc_funcs,
-			 DRM_MODE_ENCODER_TMDS);
+	if (drm_encoder_init(dev, &intel_encoder->base, &intel_dp_enc_funcs,
+			     DRM_MODE_ENCODER_TMDS))
+		goto err_encoder_init;
 
 	intel_encoder->compute_config = intel_dp_compute_config;
 	intel_encoder->disable = intel_disable_dp;
@@ -5919,6 +5920,7 @@ intel_dp_init(struct drm_device *dev, int output_reg, enum port port)
 
 err_init_connector:
 	drm_encoder_cleanup(encoder);
+err_encoder_init:
 	kfree(intel_connector);
 err_connector_alloc:
 	kfree(intel_dig_port);
-- 
1.9.1