[PATCH] drm/i915: Wait vblank after register read

[Mika Kahola]

Move vblank readout after register read when reading out CRC's.

Signed-off-by: Mika Kahola <mika.kahola at intel.com>
---
 drivers/gpu/drm/i915/intel_dp.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index c722a67..e283b10 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -3982,13 +3982,14 @@ int intel_dp_sink_crc(struct intel_dp *intel_dp, struct intel_crtc_state *crtc_s
 		return ret;
 
 	do {
-		intel_wait_for_vblank(dev_priv, intel_crtc->pipe);
-
 		if (drm_dp_dpcd_readb(&intel_dp->aux,
 				      DP_TEST_SINK_MISC, &buf) < 0) {
 			ret = -EIO;
 			goto stop;
 		}
+
+		intel_wait_for_vblank(dev_priv, intel_crtc->pipe);
+
 		count = buf & DP_TEST_COUNT_MASK;
 
 	} while (--attempts && count == 0);
-- 
2.7.4