By using the out-of-line intel_wait_for_register() not only do we can
efficiency from using the hybrid wait_for() contained within, but we
avoid code bloat from the numerous inlined loops, in total (all patches):

   text    data     bss     dec     hex filename
1078551    4557     416 1083524  108884 drivers/gpu/drm/i915/i915.ko
1070775    4557     416 1075748  106a24 drivers/gpu/drm/i915/i915.ko

Signed-off-by: Chris Wilson <[email protected]>
Reviewed-by: Tvrtko Ursulin <[email protected]>
---
 drivers/gpu/drm/i915/intel_dp_mst.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_dp_mst.c 
b/drivers/gpu/drm/i915/intel_dp_mst.c
index 5f88e12575ac..c1d318601bf1 100644
--- a/drivers/gpu/drm/i915/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/intel_dp_mst.c
@@ -213,8 +213,11 @@ static void intel_mst_enable_dp(struct intel_encoder 
*encoder)
 
        DRM_DEBUG_KMS("%d\n", intel_dp->active_mst_links);
 
-       if (wait_for((I915_READ(DP_TP_STATUS(port)) & DP_TP_STATUS_ACT_SENT),
-                    1))
+       if (intel_wait_for_register(dev_priv,
+                                   DP_TP_STATUS(port),
+                                   DP_TP_STATUS_ACT_SENT,
+                                   DP_TP_STATUS_ACT_SENT,
+                                   1))
                DRM_ERROR("Timed out waiting for ACT sent\n");
 
        ret = drm_dp_check_act_status(&intel_dp->mst_mgr);
-- 
2.8.1

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