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drm: Add drm_crtc_vblank_waitqueue()
authorVille Syrjälä <ville.syrjala@linux.intel.com>
Thu, 22 May 2014 16:36:03 +0000 (19:36 +0300)
committerDaniel Vetter <daniel.vetter@ffwll.ch>
Fri, 8 Aug 2014 15:43:26 +0000 (17:43 +0200)
Add a small static inline helper to grab the vblank wait queue based on
the drm_crtc.

This is useful for drivers to do internal vblank waits using
wait_event() & co.

v2: Pimp commit message (Daniel)
    Add kernel doc (Daniel)

Suggested-by: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

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