[PATCH 1/6] drm/i915: BUG() if fences are used on unsupported platform

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Signed-off-by: Ben Widawsky <ben at bwidawsk.net>
Reviewed-by: Jesse Barnes <jbarnes at virtuousgeek.org>
---
 drivers/gpu/drm/i915/i915_gem.c | 2 +-
 drivers/gpu/drm/i915/i915_irq.c | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index e4b233d..bf3b0c7 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -2639,7 +2639,7 @@ static void i915_gem_write_fence(struct drm_device *dev, int reg,
 	case 4: i965_write_fence_reg(dev, reg, obj); break;
 	case 3: i915_write_fence_reg(dev, reg, obj); break;
 	case 2: i830_write_fence_reg(dev, reg, obj); break;
-	default: break;
+	default: BUG();
 	}
 }
 
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 914ecf4..4ec8ff2 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -1106,6 +1106,8 @@ static void i915_gem_record_fences(struct drm_device *dev,
 			error->fence[i] = I915_READ(FENCE_REG_830_0 + (i * 4));
 		break;
 
+	default:
+		BUG();
 	}
 }
 
-- 
1.8.0.1



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