drm/i915: Release temporary load-detect state upon switching

After we call drm_atomic_commit() on the load-detect state, we can free
our local reference. Upon restore, we only apply and free the previous state.

Fixes: 0853695c3ba4 ("drm: Add reference counting to drm_atomic_state")
Signed-off-by: Chris Wilson <[email protected]>
Cc: Chris Wilson <[email protected]>
Cc: Daniel Vetter <[email protected]>
Cc: <[email protected]> # v4.10-rc1+
Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
Reviewed-by: Ville Syrjälä <[email protected]>
(cherry picked from commit 7abbd11f344aa7abe29befb218774a1ea26018ac)
Signed-off-by: Jani Nikula <[email protected]>

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 1a01d4189c3f984fb79364dbf701c4baf6678757..f313d62a7e748bd5fd45693a946cf4cf4ea2bd06 100644 (file)
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -11246,6 +11246,7 @@ found:
        }
 
        old->restore_state = restore_state;
+       drm_atomic_state_put(state);
 
        /* let the connector get through one full cycle before testing */
        intel_wait_for_vblank(dev_priv, intel_crtc->pipe);