drm/i915: use the correct register when turning VDD off

That explains why I was seeing 2 consecutive "Turning eDP VDD off"
messages.

Regression introduced by:
    commit bf13e81b904a37d94d83dd6c3b53a147719a3ead
    Author: Jani Nikula <jani.nikula@intel.com>
    Date:   Fri Sep 6 07:40:05 2013 +0300
        drm/i915: add support for per-pipe power sequencing on vlv

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index b91dc7457b4b..68357777e74f 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -1125,8 +1125,8 @@ static void ironlake_panel_vdd_off_sync(struct intel_dp *intel_dp)
                 pp = ironlake_get_pp_control(intel_dp);
                 pp &= ~EDP_FORCE_VDD;
 
-                pp_stat_reg = _pp_ctrl_reg(intel_dp);
-                pp_ctrl_reg = _pp_stat_reg(intel_dp);
+                pp_ctrl_reg = _pp_ctrl_reg(intel_dp);
+                pp_stat_reg = _pp_stat_reg(intel_dp);
 
                 I915_WRITE(pp_ctrl_reg, pp);
                 POSTING_READ(pp_ctrl_reg);