Keith Packard 9e44af790f drm/i915: hold dev->struct_mutex and DRM lock during vblank ring operations ... To synchronize clip lists with the X server, the DRM lock must be held while looking at drawable clip lists. To synchronize with other ring access, the ring mutex must be held while inserting commands into the ring. Failure to do the first resulted in easy visual corruption when moving windows, and the second could have corrupted the ring with DRI2. Grabbing the DRM lock involves using the DRM tasklet mechanism, grabbing the ring mutex means potentially sleeping. Deal with both of these by always running the tasklet from a work handler. Also, protect from clip list changes since the vblank request was queued by making sure the window has at least one rectangle while looking inside, preventing oopses . Signed-off-by: Keith Packard <keithp@keithp.com> Signed-off-by: Eric Anholt <eric@anholt.net> Signed-off-by: Dave Airlie <airlied@redhat.com>		2008-10-23 13:45:56 +10:00
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drm	drm/i915: hold dev->struct_mutex and DRM lock during vblank ring operations	2008-10-23 13:45:56 +10:00
Makefile	drm: reorganise drm tree to be more future proof.	2008-07-14 10:45:01 +10:00