drm: fb refcounting for dirtyfb_ioctl
authorDaniel Vetter <daniel.vetter@ffwll.ch>
Mon, 10 Dec 2012 23:38:18 +0000 (00:38 +0100)
committerDaniel Vetter <daniel.vetter@ffwll.ch>
Sun, 20 Jan 2013 21:17:06 +0000 (22:17 +0100)
commit4ccf097f1935321f03ad36218588a9e446006b6a
treed6238772eb276ac0c7d56faf16fb920990773e9f
parent58c0dca10614117cf4b385e3314e79e3b37fa66b
drm: fb refcounting for dirtyfb_ioctl

We only need to ensure that the fb stays around for long enough. While
at it, only grab the modeset locks when we need them (since most
drivers don't implement the dirty callback, this should help jitter
and stalls when using the generic modeset driver).

Reviewed-by: Rob Clark <rob@ti.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
drivers/gpu/drm/drm_crtc.c