drm/atomic: Only destroy connector states with connection mutex held

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Otherwise the connector might have been unplugged and destroyed while
we didn't look. Yet another fallout from DP MST hotplugging that I
didn't consider.

To make sure we get this right add an appropriate WARN_ON to
drm_atomic_state_clear (obviously only when we actually have a state
to clear up). And reorder all the state_clear and backoff calls to
make it work out properly.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

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Daniel Vetter 2014-11-19 18:38:07 +01:00 • committed by Dave Airlie

parent c7eb76f493

commit 6f75cea66c

2 changed files with 13 additions and 10 deletions

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9

drivers/gpu/drm/drm_atomic.c

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14

drivers/gpu/drm/drm_atomic_helper.c

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