Commits
Chris Wilson committed 8c0a6bfef16
drm/i915/ringbuffer: Handle wrapping of the autoreported HEAD If the tail advances beyond the autoreport HEAD value, then we need to fallback to an uncached read of the HEAD register in order to ascertain the correct amount of remaining space in the ringbuffer. Reported-by: Fang, Xun <xunx.fang@intel.com> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=32259 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>