The i9xx modeset sequence is currently pretty fishy, so tight it all up with some good assert-sprinkling. We already have good coverage on the disable side, but the enable side is spotty (since until recently it was wrong). Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch> --- drivers/gpu/drm/i915/intel_display.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index e91e01c..0941159 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -1379,6 +1379,8 @@ static void intel_enable_pll(struct drm_i915_private *dev_priv, enum pipe pipe) int reg; u32 val; + assert_pipe_disabled(dev_priv, pipe); + /* No really, not for ILK+ */ BUG_ON(!IS_VALLEYVIEW(dev_priv->dev) && dev_priv->info->gen >= 5); @@ -1740,6 +1742,9 @@ static void intel_enable_pipe(struct drm_i915_private *dev_priv, enum pipe pipe, int reg; u32 val; + assert_planes_disabled(dev_priv, pipe); + assert_sprites_disabled(dev_priv, pipe); + if (HAS_PCH_LPT(dev_priv->dev)) pch_transcoder = TRANSCODER_A; else -- 1.7.10.4
