Commits
Ben Widawsky committed 96f298aa9c9
drm/1915: ringbuffer wait for idle function Added a new function which waits for the ringbuffer space to be equal to (total - 8). This is the empty condition of the ringbuffer, and equivalent to head==tail. Also modified two users of this functionality elsewhere in the code. Signed-off-by: Ben Widawsky <ben@bwidawsk.net> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>