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drm/i915: Fix 945GM regression in e259befd

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A minor typo caused a single fence register to be incorrectly
programmed, resulting in occassional tiling corruption.

Reported-and-tested-by: Hans de Bruin <bruinjm@xs4all.nl>
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=18962
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: stable@kernel.org
This commit is contained in:
Chris Wilson 2010-09-22 19:10:44 +01:00
parent db8c076b92
commit 9b74f7348f
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/i915/i915_gem.c
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@ -2400,7 +2400,7 @@ i915_gem_clear_fence_reg(struct drm_gem_object *obj)
I915_WRITE64(FENCE_REG_965_0 + (obj_priv->fence_reg * 8), 0);
break;
case 3:
if (obj_priv->fence_reg > 8)
if (obj_priv->fence_reg >= 8)
fence_reg = FENCE_REG_945_8 + (obj_priv->fence_reg - 8) * 4;
else
case 2: