git: drm/i915: Fix core-2 ring buffer init

[Matthew Dillon]

commit 0f3709757bcd92b057b45f4738aebb03d2063428
Author: Matthew Dillon <dillon at apollo.backplane.com>
Date:   Sun Aug 2 17:49:41 2015 -0700

    drm/i915: Fix core-2 ring buffer init
    
    * Fix a ring buffer initialization issue with core-2 by using a read-back
      to enforce order.
    
    * Taken-from linux, checked linux-current and same fix is still there.
    
    Taken-from: a4acb8d0933f89 (linux)
    Reported-by: davshao bug #2834

Summary of changes:
 sys/dev/drm/i915/intel_ringbuffer.c | 3 +++
 1 file changed, 3 insertions(+)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/0f3709757bcd92b057b45f4738aebb03d2063428


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