In the path were there is no state to duplicate, the allocated crtc
state wouldn't have the crtc backpointer initialized.
Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_atomic.c | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_atomic.c b/drivers/gpu/drm/i915/intel_atomic.c
index 011b896..3903b90 100644
--- a/drivers/gpu/drm/i915/intel_atomic.c
+++ b/drivers/gpu/drm/i915/intel_atomic.c
@@ -214,12 +214,18 @@ struct drm_crtc_state *
intel_crtc_duplicate_state(struct drm_crtc *crtc)
{
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ struct intel_crtc_state *crtc_state;
if (WARN_ON(!intel_crtc->config))
- return kzalloc(sizeof(*intel_crtc->config), GFP_KERNEL);
+ crtc_state = kzalloc(sizeof(*crtc_state), GFP_KERNEL);
+ else
+ crtc_state = kmemdup(intel_crtc->config,
+ sizeof(*intel_crtc->config), GFP_KERNEL);
- return kmemdup(intel_crtc->config, sizeof(*intel_crtc->config),
- GFP_KERNEL);
+ if (crtc_state)
+ crtc_state->base.crtc = crtc;
+
+ return &crtc_state->base;
}
/**
--
2.1.0
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