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drm/i915: Don't let an oops get triggered from irq_emit without dma init.

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Userland is broken if it's trying this, but we also shouldn't allow oopses.

Signed-off-by: Eric Anholt <[email protected]>
This commit is contained in:
Eric Anholt 2009-04-16 13:46:12 -07:00
commit 07f4f8bf43
1 changed files with 1 additions and 1 deletions
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drivers/gpu/drm/i915/i915_irq.c
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@ -406,7 +406,7 @@ int i915_irq_emit(struct drm_device *dev, void *data,
drm_i915_irq_emit_t *emit = data;
int result;
if (!dev_priv) {
if (!dev_priv || !dev_priv->ring.virtual_start) {
DRM_ERROR("called with no initialization\n");
return -EINVAL;
}