[Intel-gfx] [PATCH 17/31] drm/i915: WARN on lack of shared dpll

[Daniel Vetter]

Now that we have proper hw state reconstruction we should never have a
case where we don't have the software dpll state properly set up. So
add WARNs to the respective !pll cases in enable/disabel_shared_dpll.

Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
---
 drivers/gpu/drm/i915/intel_display.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index c42b87b..388ac54 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -1371,7 +1371,7 @@ static void ironlake_enable_shared_dpll(struct intel_crtc *crtc)
 
 	/* PCH PLLs only available on ILK, SNB and IVB */
 	BUG_ON(dev_priv->info->gen < 5);
-	if (pll == NULL)
+	if (WARN_ON(pll == NULL))
 		return;
 
 	if (WARN_ON(pll->refcount == 0))
@@ -1399,7 +1399,7 @@ static void intel_disable_shared_dpll(struct intel_crtc *crtc)
 
 	/* PCH only available on ILK+ */
 	BUG_ON(dev_priv->info->gen < 5);
-	if (pll == NULL)
+	if (WARN_ON(pll == NULL))
 	       return;
 
 	if (WARN_ON(pll->refcount == 0))
-- 
1.7.11.7