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drm/i915: Don't let an oops get triggered from irq_emit without dma init.
author
Eric Anholt
<eric@anholt.net>
Thu, 16 Apr 2009 20:46:12 +0000
(13:46 -0700)
committer
Eric Anholt
<eric@anholt.net>
Fri, 17 Apr 2009 20:30:50 +0000
(13:30 -0700)
Userland is broken if it's trying this, but we also shouldn't allow oopses.
Signed-off-by: Eric Anholt <eric@anholt.net>
drivers/gpu/drm/i915/i915_irq.c
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diff --git
a/drivers/gpu/drm/i915/i915_irq.c
b/drivers/gpu/drm/i915/i915_irq.c
index
ee7ce7b
..
98bb4c8
100644
(file)
--- a/
drivers/gpu/drm/i915/i915_irq.c
+++ b/
drivers/gpu/drm/i915/i915_irq.c
@@
-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;
}