drm/i915: only set the intel_crtc DPMS mode to on if the mode set succeeded

If it failed, leave it in the "off" state.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Keith Packard <keithp@keithp.com>

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index bdab82b..29743de 100644 (file)
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -5984,10 +5984,12 @@ static int intel_crtc_mode_set(struct drm_crtc *crtc,
 
        ret = dev_priv->display.crtc_mode_set(crtc, mode, adjusted_mode,
                                              x, y, old_fb);
-
        drm_vblank_post_modeset(dev, pipe);
 
-       intel_crtc->dpms_mode = DRM_MODE_DPMS_ON;
+       if (ret)
+               intel_crtc->dpms_mode = DRM_MODE_DPMS_OFF;
+       else
+               intel_crtc->dpms_mode = DRM_MODE_DPMS_ON;
 
        return ret;
 }