drm/armada: redo locking and atomics for armada_drm_crtc_complete_frame_work()

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We can do better with armada_drm_crtc_complete_frame_work() - we can
avoid taking the event lock unless a call to drm_send_vblank_event()
is required, and using cmpxchg() and xchg(), we can eliminate the
locking around dcrtc->frame_work entirely.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

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Russell King 2015-07-15 18:09:38 +01:00

parent e0ac5e9b4b

commit 709ffd82fc

1 changed files with 23 additions and 30 deletions

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drivers/gpu/drm/armada/armada_crtc.c

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