drm/i915: Rename intel_flush_display_plane to intel_flush_primary_plane

The intel_flush_primary_plane name actually tells us which plane
we're talking about.

Also reorganize the internals a bit and add a missing POSTING_READ()
to make sure the hardware has seen the changes by the time we
return from the function.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 008ec0bb017f..da24825acc84 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -4773,7 +4773,7 @@ static void g4x_disable_trickle_feed(struct drm_device *dev)
                 I915_WRITE(DSPCNTR(pipe),
                            I915_READ(DSPCNTR(pipe)) |
                            DISPPLANE_TRICKLE_FEED_DISABLE);
-                intel_flush_display_plane(dev_priv, pipe);
+                intel_flush_primary_plane(dev_priv, pipe);
         }
 }