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drm/i915: WARN if primary plane state doesn't match expectations

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Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ville Syrjälä 2013-10-01 18:02:20 +03:00 committed by Daniel Vetter
parent d1de00efcb
commit 0037f71c4b
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/i915/intel_display.c
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@ -1840,6 +1840,8 @@ static void intel_enable_primary_plane(struct drm_i915_private *dev_priv,
/* If the pipe isn't enabled, we can't pump pixels and may hang */
assert_pipe_enabled(dev_priv, pipe);
WARN(!intel_crtc->primary_disabled, "Primary plane already enabled\n");
intel_crtc->primary_disabled = false;
reg = DSPCNTR(plane);
@ -1868,6 +1870,8 @@ static void intel_disable_primary_plane(struct drm_i915_private *dev_priv,
int reg;
u32 val;
WARN(intel_crtc->primary_disabled, "Primary plane already disabled\n");
intel_crtc->primary_disabled = true;
reg = DSPCNTR(plane);