From: Paulo Zanoni <paulo.r.zanoni at intel.com>
This solves some "unclaimed register" messages when booting the
machine with eDP attached.
Signed-off-by: Paulo Zanoni <paulo.r.zanoni at intel.com>
---
drivers/gpu/drm/i915/intel_display.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index bd27336..9a9f6d7 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -3584,8 +3584,10 @@ static void haswell_crtc_disable(struct drm_crtc *crtc)
intel_ddi_disable_transcoder_func(dev_priv, cpu_transcoder);
/* Disable PF */
- I915_WRITE(PF_CTL(pipe), 0);
- I915_WRITE(PF_WIN_SZ(pipe), 0);
+ if (!intel_power_well_is_down(dev)) {
+ I915_WRITE(PF_CTL(pipe), 0);
+ I915_WRITE(PF_WIN_SZ(pipe), 0);
+ }
intel_ddi_disable_pipe_clock(intel_crtc);
--
1.7.10.4
