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drm/i915: WARN on lack of shared dpll

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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.

Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Daniel Vetter
2013-06-05 13:34:19 +02:00
parent 91d1b4bd14
commit 87a875bbff
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/i915/intel_display.c
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@@ -1401,7 +1401,7 @@ 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))
@@ -1430,7 +1430,7 @@ 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))