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



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

Signed-off-by: Eric Anholt <eric@anholt.net>

parent f544847f

drivers/gpu/drm/i915/i915_irq.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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;
		}